Based on bentonite modified nylon cable protective case and preparation method thereofTechnical field
The present invention relates to cable protective sleeve, in particular it relates to be based on bentonite modified nylon cable protective case and its systemPreparation Method.
Background technology
Cable is mainly made up of following four part.Conducting wire center：It is made of high conductivity material (copper or aluminium).According to layingRequirement of the use condition to cable softness, the every line heart may be formed by solid conductor or multiple conducting wires are stranded；Insulating barrier：Insulating materials as cable should have insulaion resistance high, breakdown field strength high, low dielectric loss and low JieElectric constant.Sealing sheath：Protection insulated wire heart is protected from the damage of machinery, moisture, moisture, chemical substance, light etc..For moisture-sensitiveInsulation, it is general to use lead or aluminium extrusion sealing sheath；Protection coating：It is used to protect sealing sheath from mechanical damage.
Although existing sealing sheath disclosure satisfy that existing demand, but partial cables are embedded in underground, due to undergroundAcid or alkali environment result in sealing sheath and have received corrosion, and then cause that sealing sheath is difficult to play a part of to protect cable.
The content of the invention
It is an object of the invention to provide a kind of based on bentonite modified nylon cable protective case and preparation method thereof, pass throughNylon cable protective case obtained in the preparation method has excellent mechanical property and corrosion resistance, while the preparation method hasHave the advantages that operation is simple, be easy to operation.
To achieve these goals, the invention provides a kind of preparation based on bentonite modified nylon cable protective caseMethod, including：
1) bentonite is calcined, being then placed in calcined product carries out immersion treatment in modified solution, finally filterFilter cake is taken modified alta-mud is obtained；
2) by nylon, PEO, polyisobutene, mica powder, barium sulfate, antimony oxide, dolomite dust, tricresyl phosphateThe mixing of chloroethene ester, mineral wool, paraffin wax emulsions and modified alta-mud, shaping are protected with being obtained based on bentonite modified nylon cableSet；
Wherein, modified solution is made up of water, hydrochloric acid, ethylene glycol fourth diether, carbon fiber and lauric acid diethyl amide.
Present invention also offers a kind of based on bentonite modified nylon cable protective case, should be in bentonite modified nylonCable protective sleeve is prepared by above-mentioned preparation method.
In the above-mentioned technical solutions, the present invention makes obtained nylon electricity by the synergy of each step and each raw materialCable protection set has excellent mechanical property and corrosion resistance, while the preparation method has, operation is simple, be easy to operationAdvantage.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Specific embodiment of the invention is described in detail below.It should be appreciated that described herein specificImplementation method is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The invention provides a kind of preparation method based on bentonite modified nylon cable protective case, including：
1) bentonite is calcined, being then placed in calcined product carries out immersion treatment in modified solution, finally filterFilter cake is taken modified alta-mud is obtained；
2) by nylon, PEO, polyisobutene, mica powder, barium sulfate, antimony oxide, dolomite dust, tricresyl phosphateThe mixing of chloroethene ester, mineral wool, paraffin wax emulsions and modified alta-mud, shaping are protected with being obtained based on bentonite modified nylon cableSet；
Wherein, modified solution is made up of water, hydrochloric acid, ethylene glycol fourth diether, carbon fiber and lauric acid diethyl amide.
1 the step of above-mentioned preparation method) in, the actual conditions of calcining can be selected in scope wide, but in order toMake obtained nylon cable protective case that there is more excellent mechanical property and corrosion resistance, it is preferable that in step 1) in, calciningAt least meet following condition：Calcining heat is 410-425 DEG C, and calcination time is 2-4h.
1 the step of above-mentioned preparation method) in, the actual conditions of immersion treatment can be selected in scope wide, butIn order that obtained nylon cable protective case has more excellent mechanical property and corrosion resistance, it is preferable that in step 1) in,Immersion treatment at least meets following condition：Soaking temperature is 40-50 DEG C, and soak time is 3-6h.
1 the step of above-mentioned preparation method) in, the consumption of each material can be selected in scope wide, but in order thatObtained nylon cable protective case has more excellent mechanical property and corrosion resistance, it is preferable that in step 1) in, calcining is producedThing is 100 with the weight ratio of modified solution：350-500；In modified solution, relative to the water of 100 weight portions, the consumption of hydrochloric acidIt is 0.5-2 weight portions, the consumption of ethylene glycol fourth diether is 12-25 weight portions, and the consumption of carbon fiber is 40-60 weight portions, bayThe consumption of sour diglycollic amide is 34-54 weight portions.
2 the step of above-mentioned preparation method) in, the consumption of each material can be selected in scope wide, but in order thatObtained nylon cable protective case has more excellent mechanical property and corrosion resistance, it is preferable that in step 2) in, relative toThe nylon of 100 weight portions, the consumption of PEO is 31-36 weight portions, and the consumption of polyisobutene is 28-33 weight portions, cloudThe consumption of female powder is 9-16 weight portions, and the consumption of barium sulfate is 15-19 weight portions, and the consumption of antimony oxide is 2-7 weight portions,The consumption of dolomite dust is 8-14 weight portions, and the consumption of TCEP is 60-78 weight portions, and the consumption of mineral wool is 47-55 weight portions, the consumption of paraffin wax emulsions is 45-58 weight portions, and the consumption of modified alta-mud is 31-39 weight portions.
2 the step of above-mentioned preparation method) in, the actual conditions of mixing can be selected in scope wide, but in order toMake obtained nylon cable protective case that there is more excellent mechanical property and corrosion resistance, it is preferable that in step 2) in, mixingAt least meet following condition：Melting temperature is 210-220 DEG C, and mixing time is 3-6h.
2 the step of above-mentioned preparation method) in, mica powder can be selected with the particle diameter of dolomite dust in scope wide,But in order that obtained nylon cable protective case has more excellent mechanical property and corrosion resistance, it is preferable that in step2) in, mica powder meets independently of one another with dolomite dust：Particle diameter is 3-8 μm.
2 the step of above-mentioned preparation method) in, the concrete mode of shaping can be selected in scope wide, but in order toMake obtained nylon cable protective case that there is more excellent mechanical property and corrosion resistance, it is preferable that in step 2) in, shapingCarried out by the way of extrusion molding.
Present invention also offers a kind of based on bentonite modified nylon cable protective case, should be in bentonite modified nylonCable protective sleeve is prepared by above-mentioned preparation method.
Below will the present invention will be described in detail by embodiment.
Embodiment 1
1) by bentonite in 3h is calcined at 418 DEG C, then by calcined product and modified solution (water, hydrochloric acid, ethylene glycol fourth twoThe weight ratio of ether, carbon fiber and lauric acid diethyl amide is 100：1.5：18：60：44) according to 100：400 weight is than mixingAnd in 45 DEG C of immersion treatment 4h, finally filter to take filter cake modified alta-mud is obtained；
2) by nylon, PEO, polyisobutene, mica powder (particle diameter is 5 μm), barium sulfate, antimony oxide, white cloudsStone flour (particle diameter is 5 μm), TCEP, mineral wool, paraffin wax emulsions and modified alta-mud are according to 100：34：30：12：17：5：12：68：50：49：35 weight than it is mixed be incorporated in 215 DEG C at knead 4h, extrusion molding to be obtained based on bentonite modifiedNylon cable protective case A1.
Embodiment 2
1) by bentonite in 2h is calcined at 410 DEG C, then by calcined product and modified solution (water, hydrochloric acid, ethylene glycol fourth twoThe weight ratio of ether, carbon fiber and lauric acid diethyl amide is 100：0.5：12：40：34) according to 100：350 weight is than mixingAnd in 40 DEG C of immersion treatment 3h, finally filter to take filter cake modified alta-mud is obtained；
2) by nylon, PEO, polyisobutene, mica powder (particle diameter is 3 μm), barium sulfate, antimony oxide, white cloudsStone flour (particle diameter is 3 μm), TCEP, mineral wool, paraffin wax emulsions and modified alta-mud are according to 100：31：28：9：15：2：8：60：47：45：31 weight kneads 3h, extrusion molding to be obtained based on bentonite modified nylon than mixed being incorporated at 210 DEG CCable protective sleeve A1.
Embodiment 3
1) by bentonite in 4h is calcined at 425 DEG C, then by calcined product and modified solution (water, hydrochloric acid, ethylene glycol fourth twoThe weight ratio of ether, carbon fiber and lauric acid diethyl amide is 100：2：25：60：54) according to 100：500 weight is than mixing simultaneouslyIn 50 DEG C of immersion treatment 6h, finally filter to take filter cake modified alta-mud is obtained；
2) by nylon, PEO, polyisobutene, mica powder (particle diameter is 8 μm), barium sulfate, antimony oxide, white cloudsStone flour (particle diameter is 8 μm), TCEP, mineral wool, paraffin wax emulsions and modified alta-mud are according to 100：36：33：16：19：7：14：78：55：58：39 weight than it is mixed be incorporated in 220 DEG C at knead 6h, extrusion molding to be obtained based on bentonite modifiedNylon cable protective case A1.
Comparative example 1
Method according to embodiment 1 carries out that nylon cable protective case B1 is obtained, unlike, salt is not used in modified solutionAcid.
Comparative example 2
Method according to embodiment 1 carries out that nylon cable protective case B2 is obtained, unlike, carbon is not used in modified solutionFiber.
Comparative example 3
Method according to embodiment 1 carries out that nylon cable protective case B3 is obtained, unlike, the moon is not used in modified solutionCinnamic acid diglycollic amide.
Comparative example 4
Method according to embodiment 1 carries out that nylon cable protective case B4 is obtained, unlike, step 2) in mica is not usedPowder.
Comparative example 5
Method according to embodiment 1 carries out that nylon cable protective case B5 is obtained, unlike, step 2) in white clouds are not usedStone flour.
Comparative example 6
Method according to embodiment 1 carries out that nylon cable protective case B6 is obtained, unlike, step 2) in slag is not usedCotton.
Comparative example 7
Method according to embodiment 1 carries out that nylon cable protective case B7 is obtained, unlike, step 2) in be not used it is modifiedBentonite.
Detection example 1
Detect the tensile strength σ t that above-mentioned cable protection is enclosed within 25 DEG C1(MPa), then above-mentioned cable protection is placed onPH be 3 acid solution in it is lower stand 7 days, then be placed in the alkali lye that pH is 12 it is lower stand 7 days, then its tensile strength σ t2(MPa),Concrete outcome is shown in Table 1.
Table 1
| σt1(MPa) | σt2(MPa) |
| A1 | 8.2 | 7.9 |
| A2 | 8.3 | 8.1 |
| A3 | 8.1 | 7.8 |
| B1 | 6.4 | 5.3 |
| B2 | 6.0 | 4.9 |
| B3 | 5.7 | 4.6 |
| B4 | 6.4 | 4.7 |
| B5 | 6.1 | 4.1 |
| B6 | 5.7 | 4.2 |
By above-described embodiment, comparative example and detection example, the cable protective sleeve that the present invention is provided has excellent powerLearn performance and corrosion resistance.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned implementation methodDetail, in range of the technology design of the invention, various simple variants can be carried out to technical scheme, thisA little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lanceIn the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various canThe combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originallyThe thought of invention, it should equally be considered as content disclosed in this invention.