[summary of the invention]
In view of the above problems, the object of the invention is to develop a kind of fiberglass enhanced polyphenyl thioether/polyphenylether composite material, this fiberglass enhanced polyphenyl thioether/polyphenylether composite material can further improve the physicals of polyphenyl thioether/polyphenylether composite material, and the warpage issues occurring can improve forming process time.
In order to achieve the above object, fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present invention, percentage ratio calculates by weight, and it comprises following component:
Polyphenylene sulfide 5~60%;
Polyphenylene oxide 5~30%;
Flat glass fiber 10~60%;
Mineral filler 0~10%;
Coupling agent 0.1~3%;
Processing aid 0.1~2%.
Especially, above-mentioned polyphenylene sulfide viscosity is 50~150Pas.
Especially, in above-mentioned matrix material, the weight percentage containing polyphenylene oxide is 8~15%.
Especially, the flat ratio of above-mentioned flat glass fiber is 0.1~0.5, is preferably 0.2~0.3.
Especially, the minor axis in the cross section of above-mentioned flat glass fiber is 0.5~25um, and the major diameter in cross section is 1.0~250um.
Especially, above-mentioned mineral filler is a kind of in talcum powder, barium sulfate or calcium carbonate.
Especially, above-mentioned coupling agent is silane coupling agent.
Especially, above-mentioned processing aid is a kind of, two or more the mixture in lipid acid, calcium stearate, Zinic stearas, silicone powder.
In addition, the present invention also provides a kind of preparation method of fiberglass enhanced polyphenyl thioether/polyphenylether composite material, and for the preparation of above-mentioned fiberglass enhanced polyphenyl thioether/polyphenylether composite material, the method comprises the following steps:
(a) by polyphenylene sulfide and polyphenylene oxide resin respectively at the temperature of 140~160 ℃ and 120~140 ℃ in dehumidifying heat pump baking oven dry 3~5 hours;
(b) take dried polyphenylene sulfide and polyphenylene oxide resin and mix;
(c) take mineral filler, coupling agent and processing aid and join high-speed mixer high speed premix;
(d) mixture in mixture, step (c) in above-mentioned steps (b) and the flat glass fiber that takes are joined successively and on twin screw extruder, melt extrude granulation, each interval temperature of twin screw extruder is respectively: 190~280 ℃, an interval, two 240~290 ℃, intervals, three 240~290 ℃, intervals, four 240~300 ℃, intervals, five 240~310 ℃, intervals, six 240~310 ℃, intervals, seven 240~310 ℃, intervals, eight 240~310 ℃, intervals, nine 240~310 ℃, intervals, head temperature is 270~310 ℃.
Compared to prior art, fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present invention and preparation method thereof, by using the fiberglass enhanced polyphenyl thioether/polyphenylether composite material of flattened, can further improve the physicals of polyphenyl thioether/polyphenylether composite material, the warpage issues occurring while improving forming process, makes it more be widely used in the fields such as electronics, electrical equipment, automobile and aerospace.
[embodiment]
For object of the present invention, function and technique means are had to further understanding, existing as follows to the detailed description of the invention in conjunction with specific embodiments.
The starting material that use in comparative example and embodiment are as follows:
Polyphenylene sulfide is that Deyang, Sichuan company produces, and the trade mark is hb-crossDL.
Polyphenylene oxide WeiGE company produces, and the trade mark is N300.
Flat glass fiber is that Nittobo company produces, and the trade mark is 962S.
Circular glass fiber is that megalith company produces, and the trade mark is 540.
Mineral filler is that elite company produces, and the trade mark is SK-6800B.
Coupling agent adopts KH560.
Embodiment 1
The fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present embodiment, percentage ratio calculates by weight, and it comprises following component:
Polyphenylene sulfide 58.7%;
Polyphenylene oxide 5%;
Flat glass fiber 30%;
Mineral filler 5%;
Coupling agent 0.3%;
Processing aid 1%.
By polyphenylene sulfide and polyphenylene oxide resin respectively at the temperature of 140~160 ℃ and 120~140 ℃ in dehumidifying heat pump baking oven dry 3~5 hours; Take dried polyphenylene sulfide and polyphenylene oxide resin and mix; Take mineral filler, coupling agent and processing aid and join high-speed mixer high speed premix; All mixtures in above-mentioned steps and the flat glass fiber that takes are joined successively and on twin screw extruder, melt extrude granulation, each interval temperature of twin screw extruder is respectively: 190~280 ℃, an interval, two 240~290 ℃, intervals, three 240~290 ℃, intervals, four 240~300 ℃, intervals, five 240~310 ℃, intervals, six 240~310 ℃, intervals, seven 240~310 ℃, intervals, eight 240~310 ℃, intervals, nine 240~310 ℃, intervals, head temperature is 270~310 ℃.
Comparative example 1
Comparative example 1 is by the circular glass fiber of the weight percentage such as flat glass fiber is changed in embodiment 1; All the other components and weight percentage are all identical, then with same preparation method's preparation.
Embodiment 2
The fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present embodiment, percentage ratio calculates by weight, and it comprises following component:
Polyphenylene sulfide 28.5%;
Polyphenylene oxide 5%;
Flat glass fiber 60%;
Mineral filler 5%;
Coupling agent 0.5%;
Processing aid 1%.
By polyphenylene sulfide and polyphenylene oxide resin respectively at the temperature of 140~160 ℃ and 120~140 ℃ in dehumidifying heat pump baking oven dry 3~5 hours; Take dried polyphenylene sulfide and polyphenylene oxide resin and mix; Take mineral filler, coupling agent and processing aid and join high-speed mixer high speed premix; All mixtures in above-mentioned steps and the flat glass fiber that takes are joined successively and on twin screw extruder, melt extrude granulation, each interval temperature of twin screw extruder is respectively: 190~280 ℃, an interval, two 240~290 ℃, intervals, three 240~290 ℃, intervals, four 240~300 ℃, intervals, five 240~310 ℃, intervals, six 240~310 ℃, intervals, seven 240~310 ℃, intervals, eight 240~310 ℃, intervals, nine 240~310 ℃, intervals, head temperature is 270~310 ℃.
Comparative example 2
Comparative example 2 is by the circular glass fiber of the weight percentage such as flat glass fiber is changed in embodiment 2; All the other components and weight percentage are all identical, then with same preparation method's preparation.
Embodiment 3
The fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present embodiment, percentage ratio calculates by weight, and it comprises following component:
Polyphenylene sulfide 38.7%;
Polyphenylene oxide 10%;
Flat glass fiber 45%;
Mineral filler 5%;
Coupling agent 0.3%;
Processing aid 1%.
By polyphenylene sulfide and polyphenylene oxide resin respectively at the temperature of 140~160 ℃ and 120~140 ℃ in dehumidifying heat pump baking oven dry 3~5 hours; Take dried polyphenylene sulfide and polyphenylene oxide resin and mix; Take mineral filler, coupling agent and processing aid and join high-speed mixer high speed premix; All mixtures in above-mentioned steps and the flat glass fiber that takes are joined successively and on twin screw extruder, melt extrude granulation, each interval temperature of twin screw extruder is respectively: 190~280 ℃, an interval, two 240~290 ℃, intervals, three 240~290 ℃, intervals, four 240~300 ℃, intervals, five 240~310 ℃, intervals, six 240~310 ℃, intervals, seven 240~310 ℃, intervals, eight 240~310 ℃, intervals, nine 240~310 ℃, intervals, head temperature is 270~310 ℃.
Comparative example 3
Comparative example 3 is by the circular glass fiber of the weight percentage such as flat glass fiber is changed in embodiment 3; All the other components and weight percentage are all identical, then with same preparation method's preparation.
Embodiment 4
The fiberglass enhanced polyphenyl thioether/polyphenylether composite material of the present embodiment, percentage ratio calculates by weight, and it comprises following component:
Polyphenylene sulfide 36.7%;
Polyphenylene oxide 12%;
Flat glass fiber 45%;
Mineral filler 5%;
Coupling agent 0.3%;
Processing aid 1%.
By polyphenylene sulfide and polyphenylene oxide resin respectively at the temperature of 140~160 ℃ and 120~140 ℃ in dehumidifying heat pump baking oven dry 3~5 hours; Take dried polyphenylene sulfide and polyphenylene oxide resin and mix; Take mineral filler, coupling agent and processing aid and join high-speed mixer high speed premix; All mixtures in above-mentioned steps and the flat glass fiber that takes are joined successively and on twin screw extruder, melt extrude granulation, each interval temperature of twin screw extruder is respectively: 190~280 ℃, an interval, two 240~290 ℃, intervals, three 240~290 ℃, intervals, four 240~300 ℃, intervals, five 240~310 ℃, intervals, six 240~310 ℃, intervals, seven 240~310 ℃, intervals, eight 240~310 ℃, intervals, nine 240~310 ℃, intervals, head temperature is 270~310 ℃.
Comparative example 4
Comparative example 4 is by the circular glass fiber of the weight percentage such as flat glass fiber is changed in embodiment 4; All the other components and weight percentage are all identical, then with same preparation method's preparation.
Each embodiment and comparative example melt extrude after granulation above, then injection moulding ASTM standard testing batten on injection moulding machine, press the mechanical property of ASTM standard testing resulting materials, wherein according to ASTM D638 test tensile strength, according to ASTM D790 test flexural strength and modulus in flexure, according to ASTM D256 test shock strength, and estimate products formed warpage degree, test result is as shown in table 1:
Table 1: embodiment and comparative example test result
By table 1, draw: in embodiment, adopt the glass fibre of flattened to compare with adopting the glass fibre of circular section shape in comparative example, tensile strength, flexural strength, modulus in flexure and shock strength at the matrix material obtaining have all improved 10%~30%, also improve the defect of products formed warpage, shown the superiority of flat glass fiber; And in embodiment according to the flame retardant properties of UL-94 standard testing matrix material, in the situation that not dosing any fire retardant, reach UL94-V0 grade.
In addition, the flat ratio of flat glass fiber is more than 0.2, flexural strength and shock strength can maintain higher level, if flat glass fiber cross section is too thin, more difficult the obtaining sometimes that spin of glass fibre, if contrary its cross section is too thick, the reinforced effects reducing as strongthener due to the contact area with resin can reduce, therefore, contriver is 0.2~0.3 through concentrated research flat ratio, cross section minor axis is 0.5~25um, and when the major diameter in cross section is 1.0~250um, reinforced effects is best.
Therefore, use flat glass fiber to strengthen polyphenyl thioether/polyphenylether composite material, can further improve the physicals of polyphenyl thioether/polyphenylether composite material, improve the defect of products formed warpage, make it more be widely used in the fields such as electronics, electrical equipment, automobile and aerospace.