Disclosure of Invention
Therefore, the invention provides the strong-durability acrylic adhesive tape, which solves the problem that the prior adhesive tape cannot meet the actual use requirement due to poor weather resistance.
In order to achieve the above object, the present invention provides the following technical solutions:
according to a first aspect of the invention, there is provided a strong durability acrylic adhesive tape, comprising a substrate layer and an adhesive layer coated on the surface of the substrate layer, wherein the substrate layer comprises the following components in parts by weight:
10-15 parts of perfluorobutyl ethylene modified perfluoroethylene propylene resin, 5-10 parts of phenolic resin, 7-13 parts of polyester fiber, 2-7 parts of mica powder, 16-20 parts of polyaniline composite glass fiber, 1-3 parts of heat stabilizer, 2-5 parts of impact resistance modifier, 1-3 parts of plasticizer and 2-4 parts of antistatic agent.
Further, the adhesive layer comprises the following components in parts by weight:
90-100 parts of polyisobutylene grafted acrylate copolymer, 15-22 parts of styrene-hydrogenated isoprene-diblock copolymer, 13-20 parts of isooctyl acrylate, 10-22 parts of hyperbranched polysiloxane grafted polyphenylene sulfide, 1-8 parts of dicumyl peroxide and 3-10 parts of methacrylic acid.
Further, the heat stabilizer is isooctyl dimercaptoacetate di-n-octyl tin, the impact resistance modifier is methacrylic acid-butadiene-styrene copolymer, the plasticizer is phthalate, and the antistatic agent is alkyl phosphate.
Further, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following components in parts by weight:
10-20 parts of perfluorobutyl ethylene, 5-10 parts of vinylidene fluoride, 8-12 parts of tetrafluoroethylene, 6-12 parts of hexafluoropropylene, 0.01-10 parts of perfluorocarboxylate, 0.05-15 parts of benzoyl peroxide, 0.01-5 parts of diethyl malonate, 0.1-10 parts of tetrabutyl titanate, 20-60 parts of perfluorohexane and 0.05-20 parts of fluorosilicone.
Further, the hyperbranched polysiloxane-grafted polyphenylene sulfide comprises the following components in parts by weight:
3-35 parts of hyperbranched polysiloxane, 80-100 parts of polyphenylene sulfide, 1-5 parts of ammonium persulfate, 0.5-5 parts of vinyl silane coupling agent, 25-45 parts of thioglycollic acid, 40-50 parts of toluene, 10-15 parts of dimethylformamide, 2-5 parts of photoinitiator and 100-200 parts of deionized water.
Further, the diameter of the polyaniline composite glass fiber is 1-3 mu m, and the length of the polyaniline composite glass fiber is 7-20 mu m.
Further, the adhesive tape also comprises a release film, and the release film is adhered to the lower surface of the adhesive layer.
According to a second aspect of the present invention, there is provided a method for preparing a strong durability acrylic adhesive tape, comprising the steps of:
s1, weighing perfluorobutyl ethylene modified perfluoroethylene propylene resin, phenolic resin, polyester fiber, mica powder, plasticizer, heat stabilizer and impact resistance modifier according to a proportion, stirring and uniformly mixing, performing microwave treatment with the power of 200-300W and the microwave treatment time of 10-20min, sequentially adding an antistatic agent and the impact resistance modifier into the mixture, stirring and fully mixing, and extruding by an extruder;
S2, placing two layers of glass fiber aluminum foils between two rolling rollers of a calender, placing the mixture obtained in the S1 between the two layers of glass fiber aluminum foils, starting the calender to extrude the mixture into a sheet material, and continuously passing the obtained sheet material through an electron accelerator to obtain a substrate layer;
S3, weighing the polyisobutylene grafted acrylate copolymer, the styrene-hydrogenated isoprene-diblock copolymer, the isooctyl acrylate, the hyperbranched polysiloxane grafted polyphenylene sulfide and the dicumyl peroxide according to the proportion, pouring the mixture into a reaction kettle, uniformly stirring the mixture to obtain a mixed solution, heating the mixed solution to 80-120 ℃ in the reaction kettle, keeping the temperature for 5-15min, adding methacrylic acid into the completely reacted solution, uniformly stirring the solution while reacting, and dissolving the solution to form the adhesive;
S4, finally compounding the adhesive on the base material by a coating compounding machine at a high temperature of 200 ℃ to form an adhesive layer, attaching release paper, and finally cutting into the required size by a cutting machine.
Further, in the step S1, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following preparation steps:
s11, adding water accounting for 60-70% of the total volume into a reaction kettle, vacuumizing the reaction kettle, adding perfluorocarboxylate, and heating the content of the reaction kettle to 60-80 ℃;
s12, adding an initial mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene into a reaction kettle in proportion, then adding perfluorohexane and fluorosilicone, uniformly mixing, adding benzoyl peroxide and diethyl malonate for copolymerization reaction after the pressure in the kettle reaches 5MPa, and continuously introducing the mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene in the reaction process to maintain the constant pressure of the reaction kettle at 5.0+/-0.02 MPa;
s13, finishing the reaction when the solid content in the reaction system reaches 25-35%, and recovering unreacted monomers to obtain an emulsion polymer;
S14, adding tetrabutyl titanate into the emulsion polymer for condensation, and drying the product to obtain the perfluorobutyl ethylene modified perfluoroethylene propylene resin.
Further, the hyperbranched polysiloxane-grafted polyphenylene sulfide in the step S3 comprises the following preparation steps:
s31, immersing polyphenylene sulfide into ammonium persulfate, carrying out ultrasonic treatment, then reacting under the condition of an oil bath, carrying out suction filtration and washing after the reaction is finished, and drying to constant weight to obtain oxidized polyphenylene sulfide;
s32, immersing the oxidized polyphenylene sulfide into a mixed solution of ethanol and a vinyl silane coupling agent, regulating the pH value of the solution by using acetic acid, carrying out reaction under the oil bath condition after ultrasonic treatment, cleaning and removing the ungrafted vinyl silane coupling agent after the reaction is finished, and carrying out vacuum drying to constant weight to obtain the vinyl functionalized polyphenylene sulfide;
s33, synthesizing hyperbranched polysiloxane: adding hyperbranched polysiloxane and thioglycollic acid into toluene, then adding p-toluenesulfonic acid under ice bath condition, refluxing and water diversion reaction for 4-6h at 120-140 ℃, washing with sodium bicarbonate solution after the reaction is finished, precipitating with ethanol, and drying to constant weight to obtain the end-mercapto hyperbranched polysiloxane;
S34, dispersing vinyl functionalized polyphenylene sulfide and mercapto-terminated hyperbranched polysiloxane in dimethylformamide, adding a photoinitiator after ultrasonic treatment, irradiating for 10-30min by ultraviolet light, filtering after the reaction is finished, washing by the dimethylformamide, and drying to constant weight to obtain the hyperbranched polysiloxane grafted polyphenylene sulfide.
The invention has the following advantages:
1. the perfluorobutyl ethylene modified perfluoroethylene propylene resin has excellent heat resistance and chemical stability, so that the adhesive tape can keep stable performance in a high-temperature environment, is not easy to soften or break, and can resist various corrosive chemical substances; the components such as phenolic resin, polyester fiber, mica powder, polyaniline composite glass fiber and the like contained in the formula can also improve the strength, toughness and impact resistance of the adhesive tape, so that the adhesive tape can bear the influence of external stress; the polyaniline composite glass fiber can improve the electrical insulation performance of the adhesive tape so as to ensure the good performance of the adhesive tape with strong durability under a high-voltage electric field.
2. When the strong and durable acrylic adhesive tape is prepared, the hyperbranched polysiloxane adopted by the application has a highly branched three-dimensional structure, and the structure enables the acrylic adhesive tape to have higher adhesive force and good wettability. The polyphenylene sulfide has high chemical stability, can keep stability under high-temperature and chemical corrosion environments, and obviously improves the weather resistance of the high-durability adhesive tape by grafting the polyphenylene sulfide.
3. The polyisobutylene grafted acrylate copolymer and the styrene-hydrogenated isoprene-diblock copolymer in the adhesive layer can increase the elasticity and low-temperature performance of the adhesive tape, improve the adhesive force and weather resistance of the adhesive tape, enable the adhesive tape to be firmly adhered on various surfaces and keep stable adhesive force under different environmental conditions; the isooctyl acrylate and hyperbranched polysiloxane grafted polyphenylene sulfide provide good adhesion and heat resistance, and the collocation of the compounds in the formula is helpful for improving the performance of the adhesive tape at different temperatures.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The application provides a strong-durability acrylic adhesive tape, which comprises a substrate layer and an adhesive layer coated on the surface of the substrate layer, wherein the substrate layer comprises the following components in parts by weight:
10-15 parts of perfluorobutyl ethylene modified perfluoroethylene propylene resin, 5-10 parts of phenolic resin, 7-13 parts of polyester fiber, 2-7 parts of mica powder, 16-20 parts of polyaniline composite glass fiber, 1-3 parts of heat stabilizer, 2-5 parts of impact resistance modifier, 1-3 parts of plasticizer and 2-4 parts of antistatic agent.
Specifically, the adhesive layer comprises the following components in parts by weight:
90-100 parts of polyisobutylene grafted acrylate copolymer, 15-22 parts of styrene-hydrogenated isoprene-diblock copolymer, 13-20 parts of isooctyl acrylate, 10-22 parts of hyperbranched polysiloxane grafted polyphenylene sulfide, 1-8 parts of dicumyl peroxide and 3-10 parts of methacrylic acid.
Wherein the heat stabilizer is isooctyl dimercaptoacetate di-n-octyl tin, the impact resistance modification agent is methacrylic acid-butadiene-styrene copolymer, the plasticizer is phthalate, and the antistatic agent is alkyl phosphate.
Specifically, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following components in parts by weight:
10-20 parts of perfluorobutyl ethylene, 5-10 parts of vinylidene fluoride, 8-12 parts of tetrafluoroethylene, 6-12 parts of hexafluoropropylene, 0.01-10 parts of perfluorocarboxylate, 0.05-15 parts of benzoyl peroxide, 0.01-5 parts of diethyl malonate, 0.1-10 parts of tetrabutyl titanate, 20-60 parts of perfluorohexane and 0.05-20 parts of fluorosilicone.
Specifically, the hyperbranched polysiloxane-grafted polyphenylene sulfide comprises the following components in parts by weight:
3-35 parts of hyperbranched polysiloxane, 80-100 parts of polyphenylene sulfide, 1-5 parts of ammonium persulfate, 0.5-5 parts of vinyl silane coupling agent, 25-45 parts of thioglycollic acid, 40-50 parts of toluene, 10-15 parts of dimethylformamide, 2-5 parts of photoinitiator and 100-200 parts of deionized water.
Wherein the vinyl silane coupling agent is vinyl triethoxysilane.
Wherein the photoinitiator is one of benzophenone, benzoin butyl ether, benzoin diethyl ether, benzoin dimethyl ether or 2-hydroxy-2-methyl-1-phenyl-1-acetone, and the benzophenone is adopted in the application.
Wherein the diameter of the polyaniline composite glass fiber is 1-3 mu m, and the length of the polyaniline composite glass fiber is 7-20 mu m.
The adhesive tape also comprises a release film, and the release film is adhered to the lower surface of the adhesive layer.
The application provides a preparation method of a strong-durability acrylic adhesive tape, which comprises the following steps:
s1, weighing perfluorobutyl ethylene modified perfluoroethylene propylene resin, phenolic resin, polyester fiber, mica powder, plasticizer, heat stabilizer and impact resistance modifier according to a proportion, stirring and uniformly mixing, performing microwave treatment with the power of 200-300W and the microwave treatment time of 10-20min, sequentially adding an antistatic agent and the impact resistance modifier into the mixture, stirring and fully mixing, and extruding by an extruder;
S2, placing two layers of glass fiber aluminum foils between two rolling rollers of a calender, placing the mixture obtained in the S1 between the two layers of glass fiber aluminum foils, starting the calender to extrude the mixture into a sheet material, and continuously passing the obtained sheet material through an electron accelerator to obtain a substrate layer;
S3, weighing the polyisobutylene grafted acrylate copolymer, the styrene-hydrogenated isoprene-diblock copolymer, the isooctyl acrylate, the hyperbranched polysiloxane grafted polyphenylene sulfide and the dicumyl peroxide according to the proportion, pouring the mixture into a reaction kettle, uniformly stirring the mixture to obtain a mixed solution, heating the mixed solution to 80-120 ℃ in the reaction kettle, keeping the temperature for 5-15min, adding methacrylic acid into the completely reacted solution, uniformly stirring the solution while reacting, and dissolving the solution to form the adhesive;
S4, finally compounding the adhesive on the base material by a coating compounding machine at a high temperature of 200 ℃ to form an adhesive layer, attaching release paper, and finally cutting into the required size by a cutting machine.
Specifically, in S1, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following preparation steps:
s11, adding water accounting for 60-70% of the total volume into a reaction kettle, vacuumizing the reaction kettle, adding perfluorocarboxylate, and heating the content of the reaction kettle to 60-80 ℃;
s12, adding an initial mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene into a reaction kettle in proportion, then adding perfluorohexane and fluorosilicone, uniformly mixing, adding benzoyl peroxide and diethyl malonate for copolymerization reaction after the pressure in the kettle reaches 5MPa, and continuously introducing the mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene in the reaction process to maintain the constant pressure of the reaction kettle at 5.0+/-0.02 MPa;
s13, finishing the reaction when the solid content in the reaction system reaches 25-35%, and recovering unreacted monomers to obtain an emulsion polymer;
S14, adding tetrabutyl titanate into the emulsion polymer for condensation, and drying the product to obtain the perfluorobutyl ethylene modified perfluoroethylene propylene resin.
Specifically, the hyperbranched polysiloxane-grafted polyphenylene sulfide in S3 comprises the following preparation steps:
s31, immersing polyphenylene sulfide into ammonium persulfate, carrying out ultrasonic treatment, then reacting under the condition of an oil bath, carrying out suction filtration and washing after the reaction is finished, and drying to constant weight to obtain oxidized polyphenylene sulfide;
s32, immersing the oxidized polyphenylene sulfide into a mixed solution of ethanol and a vinyl silane coupling agent, regulating the pH value of the solution by using acetic acid, carrying out reaction under the oil bath condition after ultrasonic treatment, cleaning and removing the ungrafted vinyl silane coupling agent after the reaction is finished, and carrying out vacuum drying to constant weight to obtain the vinyl functionalized polyphenylene sulfide;
s33, synthesizing hyperbranched polysiloxane: adding hyperbranched polysiloxane and thioglycollic acid into toluene, then adding p-toluenesulfonic acid under ice bath condition, refluxing and water diversion reaction for 4-6h at 120-140 ℃, washing with sodium bicarbonate solution after the reaction is finished, precipitating with ethanol, and drying to constant weight to obtain the end-mercapto hyperbranched polysiloxane;
S34, dispersing vinyl functionalized polyphenylene sulfide and mercapto-terminated hyperbranched polysiloxane in dimethylformamide, adding a photoinitiator after ultrasonic treatment, irradiating for 10-30min by ultraviolet light, filtering after the reaction is finished, washing by the dimethylformamide, and drying to constant weight to obtain the hyperbranched polysiloxane grafted polyphenylene sulfide.
Example 1
The embodiment provides a strong durability acrylic adhesive tape, which comprises a substrate layer and an adhesive layer coated on the surface of the substrate layer, wherein the substrate layer comprises the following components in parts by weight:
15kg of perfluorobutyl ethylene modified perfluoroethylene propylene resin, 10kg of phenolic resin, 13kg of polyester fiber, 5kg of mica powder, 20kg of polyaniline composite glass fiber, 3kg of isooctyl di-n-octyl tin dimercaptoacetate, 5kg of methacrylic acid-butadiene-styrene copolymer, 3kg of phthalate and 2kg of alkyl phosphate;
The adhesive layer comprises the following components in parts by weight:
100kg of polyisobutylene grafted acrylate copolymer, 22kg of styrene-hydrogenated isoprene-diblock copolymer, 20kg of isooctyl acrylate, 22kg of hyperbranched polysiloxane grafted polyphenylene sulfide, 8kg of dicumyl peroxide and 10kg of methacrylic acid.
Specifically, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following components in parts by weight:
20kg of perfluorobutyl ethylene, 10kg of vinylidene fluoride, 12kg of tetrafluoroethylene, 12kg of hexafluoropropylene, 0.05kg of perfluorocarboxylate, 0.05kg of benzoyl peroxide, 0.08kg of diethyl malonate, 0.5kg of tetrabutyl titanate, 60kg of perfluorohexane and 0.8kg of fluorosilicone.
Specifically, the hyperbranched polysiloxane-grafted polyphenylene sulfide comprises the following components in parts by weight:
35kg of hyperbranched polysiloxane, 100kg of polyphenylene sulfide, 5kg of ammonium persulfate, 5kg of vinyl silane coupling agent, 45kg of thioglycollic acid, 50kg of toluene, 15kg of dimethylformamide, 2kg of benzoyl peroxide and 200kg of deionized water.
The application also provides a preparation method of the strong-durability acrylic adhesive tape, which comprises the following steps:
S1, weighing perfluorobutyl ethylene modified poly perfluoroethylene propylene resin, phenolic resin, polyester fiber, mica powder, phthalate, isooctyl dimercaptoacetate di-n-octyl tin and methacrylic acid-butadiene-styrene copolymer according to a proportion, stirring and uniformly mixing, performing microwave treatment with the power of 300W and the microwave treatment time of 20min, sequentially adding alkyl phosphate and methacrylic acid-butadiene-styrene copolymer into the mixture, stirring and fully mixing, and extruding the mixture by using an extruder;
S2, placing two layers of glass fiber aluminum foils between two rolling rollers of a calender, placing the mixture obtained in the S1 between the two layers of glass fiber aluminum foils, starting the calender to extrude the mixture into a sheet material, and continuously passing the obtained sheet material through an electron accelerator to obtain a substrate layer;
S3, weighing the polyisobutylene grafted acrylate copolymer, the styrene-hydrogenated isoprene-diblock copolymer, the isooctyl acrylate, the hyperbranched polysiloxane grafted polyphenylene sulfide and the dicumyl peroxide according to the proportion, pouring the mixture into a reaction kettle, stirring the mixture uniformly to obtain a mixed solution, heating the mixed solution to 120 ℃ in the reaction kettle, keeping the temperature for 15min, adding methacrylic acid into the completely reacted solution, stirring the mixture uniformly while reacting, and dissolving the mixture to form the adhesive;
S4, finally compounding the adhesive on the substrate layer by a coating compounding machine at a high temperature of 200 ℃ to form an adhesive layer, attaching release paper, and finally cutting into the required size by a cutting machine.
Wherein, in S1, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following preparation steps:
S11, adding water accounting for 70% of the total volume into a reaction kettle, vacuumizing the reaction kettle, adding perfluorocarboxylate when the oxygen content is less than or equal to 30ppm, and heating the content of the reaction kettle to 80 ℃;
s12, adding an initial mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene into a reaction kettle in proportion, then adding perfluorohexane and fluorosilicone, uniformly mixing, adding benzoyl peroxide and diethyl malonate for copolymerization reaction after the pressure in the kettle reaches 5MPa, and continuously introducing the mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene in the reaction process to maintain the constant pressure of the reaction kettle at 5.0+/-0.02 MPa;
S13, finishing the reaction when the solid content in the reaction system reaches 35%, and recovering unreacted monomers to obtain an emulsion polymer;
S14, adding tetrabutyl titanate into the emulsion polymer for condensation, and drying the product to obtain the perfluorobutyl ethylene modified perfluoroethylene propylene resin.
Wherein, the hyperbranched polysiloxane grafted polyphenylene sulfide in S3 comprises the following preparation steps:
S31, immersing polyphenylene sulfide in ammonium persulfate, performing ultrasonic treatment for 0.5h at 200W and 45Hz, then reacting at 160 ℃ in an oil bath, performing suction filtration and washing after the reaction is finished, and drying to constant weight to obtain oxidized polyphenylene sulfide;
S32, immersing the oxidized polyphenylene sulfide into a mixed solution of ethanol and a vinyl silane coupling agent, regulating the pH value of the solution by using acetic acid, carrying out ultrasonic treatment for 1h at 200W and 45Hz, carrying out reaction at the temperature of 90 ℃ after the ultrasonic treatment, cleaning and removing the ungrafted vinyl silane coupling agent after the reaction is finished, and carrying out vacuum drying to constant weight to obtain the vinyl functionalized polyphenylene sulfide;
S33, synthesizing hyperbranched polysiloxane: adding hyperbranched polysiloxane and thioglycollic acid into toluene, then adding p-toluenesulfonic acid under ice bath condition, and stirring for 10min; then carrying out reflux water diversion reaction for 6 hours at 140 ℃, washing with sodium bicarbonate solution after the reaction is finished, precipitating with ethanol, and drying to constant weight to obtain the mercapto-terminated hyperbranched polysiloxane;
S34, dispersing vinyl functionalized polyphenylene sulfide and mercapto-terminated hyperbranched polysiloxane in dimethylformamide, adding benzoyl peroxide after ultrasonic treatment for 45min, radiating for 30min by ultraviolet light, filtering after the reaction, washing with dimethylformamide, and drying to constant weight to obtain the hyperbranched polysiloxane grafted polyphenylene sulfide.
Example 2
The embodiment provides a strong durability acrylic adhesive tape, which comprises a substrate layer and an adhesive layer coated on the surface of the substrate layer, wherein the substrate layer comprises the following components in parts by weight:
15kg of perfluorobutyl ethylene modified perfluoroethylene propylene resin, 10kg of phenolic resin, 13kg of polyester fiber, 5kg of mica powder, 20kg of polyaniline composite glass fiber, 3kg of isooctyl dithioglycolate di-n-octyl tin, 5kg of methacrylic acid-butadiene-styrene copolymer, 3kg of phthalate and 2kg of alkyl phosphate;
The adhesive layer comprises the following components in parts by weight:
90kg of polyisobutylene grafted acrylate copolymer, 15kg of styrene-hydrogenated isoprene-diblock copolymer, 13kg of isooctyl acrylate, 10kg of hyperbranched polysiloxane grafted polyphenylene sulfide, 8kg of dicumyl peroxide and 10kg of methacrylic acid.
Specifically, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following components in parts by weight:
20kg of perfluorobutyl ethylene, 10kg of vinylidene fluoride, 12kg of tetrafluoroethylene, 12kg of hexafluoropropylene, 0.05kg of perfluorocarboxylate, 0.05kg of benzoyl peroxide, 0.08kg of diethyl malonate, 0.5kg of tetrabutyl titanate, 60kg of perfluorohexane and 0.8kg of fluorosilicone.
Specifically, the hyperbranched polysiloxane-grafted polyphenylene sulfide comprises the following components in parts by weight:
35kg of hyperbranched polysiloxane, 100kg of polyphenylene sulfide, 5kg of ammonium persulfate, 5kg of vinyl silane coupling agent, 45kg of thioglycollic acid, 50kg of toluene, 15kg of dimethylformamide, 2kg of benzoyl peroxide and 200kg of deionized water.
The application also provides a preparation method of the strong-durability acrylic adhesive tape, which comprises the following steps:
S1, weighing perfluorobutyl ethylene modified poly perfluoroethylene propylene resin, phenolic resin, polyester fiber, mica powder, phthalate, isooctyl dimercaptoacetate di-n-octyl tin and methacrylic acid-butadiene-styrene copolymer according to a proportion, stirring and uniformly mixing, performing microwave treatment with the power of 300W and the microwave treatment time of 20min, sequentially adding alkyl phosphate and methacrylic acid-butadiene-styrene copolymer into the mixture, stirring and fully mixing, and extruding the mixture by using an extruder;
S2, placing two layers of glass fiber aluminum foils between two rolling rollers of a calender, placing the mixture obtained in the S1 between the two layers of glass fiber aluminum foils, starting the calender to extrude the mixture into a sheet material, and continuously passing the obtained sheet material through an electron accelerator to obtain a substrate layer;
S3, weighing the polyisobutylene grafted acrylate copolymer, the styrene-hydrogenated isoprene-diblock copolymer, the isooctyl acrylate, the hyperbranched polysiloxane grafted polyphenylene sulfide and the dicumyl peroxide according to the proportion, pouring the mixture into a reaction kettle, uniformly stirring the mixture to obtain a mixed solution, heating the mixed solution to 120 ℃ in the reaction kettle, keeping the temperature for 15min, adding methacrylic acid into the completely reacted solution, uniformly stirring the mixture while reacting, and dissolving the mixture to form the adhesive;
S4, finally compounding the adhesive on the substrate layer by a coating compounding machine at a high temperature of 200 ℃ to form an adhesive layer, attaching release paper, and finally cutting into the required size by a cutting machine.
Wherein, in S1, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following preparation steps:
S11, adding water accounting for 70% of the total volume into a reaction kettle, vacuumizing the reaction kettle, adding perfluorocarboxylate when the oxygen content is less than or equal to 30ppm, and heating the content of the reaction kettle to 80 ℃;
s12, adding an initial mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene into a reaction kettle in proportion, then adding perfluorohexane and fluorosilicone, uniformly mixing, adding benzoyl peroxide and diethyl malonate for copolymerization reaction after the pressure in the kettle reaches 5MPa, and continuously introducing the mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene in the reaction process to maintain the constant pressure of the reaction kettle at 5.0+/-0.02 MPa;
S13, finishing the reaction when the solid content in the reaction system reaches 35%, and recovering unreacted monomers to obtain an emulsion polymer;
S14, adding tetrabutyl titanate into the emulsion polymer for condensation, and drying the product to obtain the perfluorobutyl ethylene modified perfluoroethylene propylene resin.
Wherein, the hyperbranched polysiloxane grafted polyphenylene sulfide in S3 comprises the following preparation steps:
S31, immersing polyphenylene sulfide in ammonium persulfate, performing ultrasonic treatment for 0.5h at 200W and 45Hz, then reacting at 160 ℃ in an oil bath, performing suction filtration and washing after the reaction is finished, and drying to constant weight to obtain oxidized polyphenylene sulfide;
S32, immersing the oxidized polyphenylene sulfide into a mixed solution of ethanol and a vinyl silane coupling agent, regulating the pH value of the solution by using acetic acid, carrying out ultrasonic treatment for 1h at 200W and 45Hz, carrying out reaction at the temperature of 90 ℃ after the ultrasonic treatment, cleaning and removing the ungrafted vinyl silane coupling agent after the reaction is finished, and carrying out vacuum drying to constant weight to obtain the vinyl functionalized polyphenylene sulfide;
S33, synthesizing hyperbranched polysiloxane: adding hyperbranched polysiloxane and thioglycollic acid into toluene, then adding p-toluenesulfonic acid under ice bath condition, and stirring for 10min; then carrying out reflux water diversion reaction for 6 hours at 140 ℃, washing with sodium bicarbonate solution after the reaction is finished, precipitating with ethanol, and drying to constant weight to obtain the mercapto-terminated hyperbranched polysiloxane;
S34, dispersing vinyl functionalized polyphenylene sulfide and mercapto-terminated hyperbranched polysiloxane in dimethylformamide, adding benzoyl peroxide after ultrasonic treatment for 45min, radiating for 30min by ultraviolet light, filtering after the reaction, washing with dimethylformamide, and drying to constant weight to obtain the hyperbranched polysiloxane grafted polyphenylene sulfide.
Example 3
The embodiment provides a strong durability acrylic adhesive tape, which comprises a substrate layer and an adhesive layer coated on the surface of the substrate layer, wherein the substrate layer comprises the following components in parts by weight:
10kg of perfluorobutyl ethylene modified perfluoroethylene propylene resin, 5kg of phenolic resin, 7kg of polyester fiber, 5kg of mica powder, 16kg of polyaniline composite glass fiber, 3kg of isooctyl dithioglycolate di-n-octyl tin, 5kg of methacrylic acid-butadiene-styrene copolymer, 3kg of phthalate and 2kg of alkyl phosphate;
The adhesive layer comprises the following components in parts by weight:
100kg of polyisobutylene grafted acrylate copolymer, 22kg of styrene-hydrogenated isoprene-diblock copolymer, 20kg of isooctyl acrylate, 22kg of hyperbranched polysiloxane grafted polyphenylene sulfide, 8kg of dicumyl peroxide and 10kg of methacrylic acid.
Specifically, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following components in parts by weight:
20kg of perfluorobutyl ethylene, 10kg of vinylidene fluoride, 12kg of tetrafluoroethylene, 12kg of hexafluoropropylene, 0.05kg of perfluorocarboxylate, 0.05kg of benzoyl peroxide, 0.08kg of diethyl malonate, 0.5kg of tetrabutyl titanate, 60kg of perfluorohexane and 0.8kg of fluorosilicone.
Specifically, the hyperbranched polysiloxane-grafted polyphenylene sulfide comprises the following components in parts by weight:
35kg of hyperbranched polysiloxane, 100kg of polyphenylene sulfide, 5kg of ammonium persulfate, 5kg of vinyl silane coupling agent, 45kg of thioglycollic acid, 50kg of toluene, 15kg of dimethylformamide, 2kg of benzoyl peroxide and 200kg of deionized water.
The application also provides a preparation method of the strong-durability acrylic adhesive tape, which comprises the following steps:
S1, weighing perfluorobutyl ethylene modified poly perfluoroethylene propylene resin, phenolic resin, polyester fiber, mica powder, phthalate, isooctyl dimercaptoacetate di-n-octyl tin and methacrylic acid-butadiene-styrene copolymer according to a proportion, stirring and uniformly mixing, performing microwave treatment with the power of 300W and the microwave treatment time of 20min, sequentially adding alkyl phosphate and methacrylic acid-butadiene-styrene copolymer into the mixture, stirring and fully mixing, and extruding the mixture by using an extruder;
S2, placing two layers of glass fiber aluminum foils between two rolling rollers of a calender, placing the mixture obtained in the S1 between the two layers of glass fiber aluminum foils, starting the calender to extrude the mixture into a sheet material, and continuously passing the obtained sheet material through an electron accelerator to obtain a substrate layer;
S3, weighing the polyisobutylene grafted acrylate copolymer, the styrene-hydrogenated isoprene-diblock copolymer, the isooctyl acrylate, the hyperbranched polysiloxane grafted polyphenylene sulfide and the dicumyl peroxide according to the proportion, pouring the mixture into a reaction kettle, uniformly stirring the mixture to obtain a mixed solution, heating the mixed solution to 120 ℃ in the reaction kettle, keeping the temperature for 15min, adding methacrylic acid into the completely reacted solution, uniformly stirring the mixture while reacting, and dissolving the mixture to form the adhesive;
S4, finally compounding the adhesive on the substrate layer by a coating compounding machine at a high temperature of 200 ℃ to form an adhesive layer, attaching release paper, and finally cutting into the required size by a cutting machine.
Wherein, in S1, the perfluorobutyl ethylene modified perfluoroethylene propylene resin comprises the following preparation steps:
S11, adding water accounting for 70% of the total volume into a reaction kettle, vacuumizing the reaction kettle, adding perfluorocarboxylate when the oxygen content is less than or equal to 30ppm, and heating the content of the reaction kettle to 80 ℃;
s12, adding an initial mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene into a reaction kettle in proportion, then adding perfluorohexane and fluorosilicone, uniformly mixing, adding benzoyl peroxide and diethyl malonate for copolymerization reaction after the pressure in the kettle reaches 5MPa, and continuously introducing the mixture of perfluorobutyl ethylene, vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene in the reaction process to maintain the constant pressure of the reaction kettle at 5.0+/-0.02 MPa;
S13, finishing the reaction when the solid content in the reaction system reaches 35%, and recovering unreacted monomers to obtain an emulsion polymer;
S14, adding tetrabutyl titanate into the emulsion polymer for condensation, and drying the product to obtain the perfluorobutyl ethylene modified perfluoroethylene propylene resin.
Wherein, the hyperbranched polysiloxane grafted polyphenylene sulfide in S3 comprises the following preparation steps:
S31, immersing polyphenylene sulfide in ammonium persulfate, performing ultrasonic treatment for 0.5h at 200W and 45Hz, then reacting at 160 ℃ in an oil bath, performing suction filtration and washing after the reaction is finished, and drying to constant weight to obtain oxidized polyphenylene sulfide;
S32, immersing the oxidized polyphenylene sulfide into a mixed solution of ethanol and a vinyl silane coupling agent, regulating the pH value of the solution by using acetic acid, carrying out ultrasonic treatment for 1h at 200W and 45Hz, carrying out reaction at the temperature of 90 ℃ after the ultrasonic treatment, cleaning and removing the ungrafted vinyl silane coupling agent after the reaction is finished, and carrying out vacuum drying to constant weight to obtain the vinyl functionalized polyphenylene sulfide;
S33, synthesizing hyperbranched polysiloxane: adding hyperbranched polysiloxane and thioglycollic acid into toluene, then adding p-toluenesulfonic acid under ice bath condition, and stirring for 10min; then carrying out reflux water diversion reaction for 6 hours at 140 ℃, washing with sodium bicarbonate solution after the reaction is finished, precipitating with ethanol, and drying to constant weight to obtain the mercapto-terminated hyperbranched polysiloxane;
S34, dispersing vinyl functionalized polyphenylene sulfide and mercapto-terminated hyperbranched polysiloxane in dimethylformamide, adding benzoyl peroxide after ultrasonic treatment for 45min, radiating for 30min by ultraviolet light, filtering after the reaction, washing with dimethylformamide, and drying to constant weight to obtain the hyperbranched polysiloxane grafted polyphenylene sulfide.
Comparative example 1: this example is a comparative example in which the perfluorobutyl ethylene modified perfluoroethylene propylene resin of example 1 was replaced with a polyamide, and the other steps and parameters were the same as in example 1.
Comparative example 2: this example serves as a comparative example in which hyperbranched polysiloxane-grafted polyphenylene sulfide of example 1 was replaced with epoxy resin, and the other steps and parameters were the same as in example 1.
Performance test
(1) Peel strength: the peel strength of the strong and durable acrylic adhesive tape at-50 ℃, 30 ℃ and 160 ℃ is detected according to the test method of peel strength of GBT 2792-2014 adhesive tape.
(2) And (3) corrosion resistance detection: the waterproof effect of the strong and durable acrylic adhesive tape is tested according to GB/T18173.1-2006 pressure sensitive rubber waterproof coiled material physical property test;
(3) And (3) detecting the holding viscosity: the adhesive holding capacity of the strong and durable acrylic adhesive tape is tested according to the national standard GB/T4851-2014 adhesive tape adhesive holding capacity test method.
TABLE 1 Performance test of examples 1-3 and comparative examples 1-2.
Conclusion:
By performing performance tests on the strong and durable acrylic tapes prepared in examples 1-3 and comparative examples 1-2, the following conclusions can be drawn:
As can be seen from Table 1, the formulation of the present application was optimized to greatly improve the heat resistance, cold resistance, corrosion resistance and holding power of the strong and durable acrylic adhesive tapes prepared in examples 1 to 3.
As can be seen from the comparison of example 1 and example 3, and the comparison of example 1 and comparative example 1, the perfluorobutyl ethylene modified poly perfluoroethylene propylene resin employed in the present application provides excellent heat resistance, chemical stability and electrical insulation in the preparation of a strong and durable acrylic tape. The perfluorobutyl ethylene modified perfluoroethylene propylene resin has high chemical stability, can resist various corrosive chemical substances, has excellent heat resistance and electrical insulation, and can keep stable performance under high temperature and high pressure environment, so that the adhesive tape can keep the structural and performance integrity under various extreme conditions.
As can be seen from comparison of example 1 and example 2 and comparison of example 1 and comparative example 2, the hyperbranched polysiloxane grafted polyphenylene sulfide plays a role in enhancing the performance of an adhesive layer when the strong and durable acrylic adhesive tape is prepared, and the hyperbranched polysiloxane has a highly branched three-dimensional structure, so that the hyperbranched polysiloxane has higher adhesive force and good wettability. The adhesion between the polymer and the acrylic material can be further improved by grafting the polyphenylene sulfide. The polyphenylene sulfide has high chemical stability, and can keep stability under high-temperature and chemical corrosion environments, thereby improving the durability of the adhesive tape.
In addition, compared with the embodiment 3, the use of the phenolic resin, the polyester fiber and the polyaniline composite glass fiber influences the heat resistance and the insulation performance of the adhesive tape to a certain extent, improves the strength, the stability and the self-lubricity of the adhesive tape, and plays roles in enhancing the mechanical property, the stability, the conductivity, the electromagnetic shielding property and other modes, so that the comprehensive performance of the adhesive tape is jointly improved; the polyaniline composite glass fiber can obviously improve the tensile strength, the compressive strength and the wear resistance of a base material, has excellent chemical stability and heat resistance, ensures that the adhesive tape can keep stability in various severe environments, and improves the overall durability of the adhesive tape.
Example 1 the amounts of polyisobutylene grafted acrylate copolymer, styrene-hydrogenated isoprene-diblock copolymer and isooctyl acrylate used also affect the adhesion of the tape to some extent compared to example 2, and therefore these components also play a positive role in improving the adhesion and durability of the tape when it is prepared.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.