CN103319904A - Acrylate rubber modified silicone rubber oil-resistant material and preparation method thereof - Google Patents
Acrylate rubber modified silicone rubber oil-resistant material and preparation method thereof Download PDFInfo
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- CN103319904A CN103319904A CN201310293891XA CN201310293891A CN103319904A CN 103319904 A CN103319904 A CN 103319904A CN 201310293891X A CN201310293891X A CN 201310293891XA CN 201310293891 A CN201310293891 A CN 201310293891A CN 103319904 A CN103319904 A CN 103319904A
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Abstract
The invention discloses an acrylate rubber modified silicone rubber oil-resistant material and a preparation method thereof. The invention is characterized in that acrylate rubber is used as a modifier, an acetic acid-vinyl acetate copolymer is used for compatibilization, a composite cross-linking agent is employed, and the obtained acrylate rubber modified silicone rubber oil-resistant material has Shore hardness of 60 to 75, tensile strength of no less than 7 MPa, elongation at break of no less than 300%, tearing strength of no less than 15 kN/m and mass variation of no more than 30% in oil resistance test with ASTM No. 3 standard oil at a temperature of 150 DEG C for 70 h. The material provided by the invention has characteristics of both acrylate rubber and silicone rubber, excellent resistance to high and low temperature and to oil and superior mechanical properties. The preparation method provided by the invention has the advantages of simple process and low cost; and the prepared material can be used for an electric wire, a cable, a damping sealing device and the like in high and low temperature oil-resistant environments.
Description
Technical field
The invention belongs to the modified silicon rubber technical field, be specifically related to oil resisting material of acrylic elastomer modified methyl vinylsiloxane rubber and preparation method thereof.
Technical background
Silicon rubber has high-low temperature resistant, anti-ultraviolet, anti-irradiation, weather-proof, electrical isolation, hydrophobic, difficult combustion, highly air-permeable, physiology inertia etc., be widely used at aspects such as space flight, aviation, electric, light industry, machinery, building, chemical industry, health care, daily necessities, and become important and requisite novel high polymer material in the national economy.But the silicon rubber mechanical property is not good, and methyl vinyl silicone rubber commonly used adopts white carbon black reinforcement back draft intensity≤6MPa, and oil resistant and solvent resistance are poor, and the swelling phenomenon is obvious, has limited it in the more application in multiplex's industry field.
Physically modified silicon rubber oil-proofness research at present mainly concentrates on viton and silicon rubber paralled system.Chinese patent application numbers 200810219534.8 discloses viton and silicon rubber blend and preparation method thereof, this blend has excellent high and low temperature resistance, tensile strength height by mixing forming such as viton, silicon rubber, expanding material, acid-acceptor, reinforcing filler, constitution controller, vulcanizing agent, crosslinking coagents.But blend oil resistant mass change all 〉=30% can't satisfy the use occasion that oil-proofness is had relatively high expectations, and the viton price is expensive, becomes to produce the cost height.
Summary of the invention
The objective of the invention is oil resisting material that proposes a kind of acrylic elastomer modified methyl vinylsiloxane rubber and preparation method thereof, to overcome existing resistance oil silicone rubber product processes complexity, shortcoming that Costco Wholesale is high, acquisition can be satisfied the resistance oil silicone rubber material that general oil-proofness requires.
The preparation method of acrylic elastomer modified silicon rubber oil resisting material of the present invention is characterized in that:
A, 100 parts of methyl vinyl silicon kautschuks and the many vinylsiloxanes of 1-10 part were mediated in kneader 1-3 minute by mass parts;
B, by mass parts 50-80 part white carbon black and 3-10 part coupling agent are added several times, fully mediate evenly each back that adds, and obtains silicon rubber gross rubber;
C, silicon rubber gross rubber is warming up to 120-160 ℃, adds 5-20 part compatilizer, 20-80 part acrylic elastomer and 1-5 part anti-aging agent by mass parts, vacuum kneading evenly, logical cooling water temperature to 80 ℃, add linking agent, mediate plastic emitting in 2-5 minute;
Be cooled to room temperature after d, the plastic emitting, divide two sections to carry out high temperature vulcanized moulding again: 160 ℃-180 ℃ of one step cure temperature, curing time 10min-20min; 180 ℃-200 ℃ of post vulcanization temperature, curing time 2h-6h; After sulfuration, namely obtain the oil resisting material of acrylic elastomer modified silicon rubber of the present invention;
Described methyl vinyl silicone rubber, vinyl molar content are 0.05%-0.5%, and molecular weight is 500,000-800,000;
Described many vinylsiloxanes, vinyl molar content 3%-10%;
Described white carbon black is thermal silica or precipitated silica;
Described compatilizer is acetic acid-vinyl acetate copolymer;
Described coupling agent is that among silane coupling agent KH550, KH560, the KH570 one or more are composite;
Described anti-aging agent is phenolic antioxidant β-(3.5-di-tert-butyl-hydroxy phenyl) propionic acid ］ pentaerythritol ester (antioxidant 1010) or propenyl functional group three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (oxidation inhibitor 168), or two kinds composite.
Described linking agent is organo-peroxide dicumyl peroxide and 2,5-dimethyl-2, two two kinds of (tert-butyl peroxy base) hexanes of 5-are composite, and its compositely proportional is dicumyl peroxide by mass ratio: 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane=3:1 of 5-.
The acrylic elastomer modified silicon rubber oil resisting material of the present invention that adopts method for preparing to obtain is characterized in that the component mass content is as follows:
。
Because the present invention has adopted acrylic elastomer as properties-correcting agent, be applied to improve in the silicon rubber oil-proofness of silicon rubber, compare with silicon rubber blend and preparation method thereof with Chinese patent application number 200810219534.8 viton, the oil-proofness of product of the present invention is significantly improved, and production cost is lower.Because the present invention selects acetic acid-vinyl acetate copolymer increase-volume for use, is applied to improve in the acrylic elastomer modified silicon rubber oil resisting material dispersiveness of acrylic elastomer, overcome acrylic elastomer and disperseed inhomogeneous shortcoming.Because the present invention adopts multiple crosslinking agent, is applied to realize in the acrylic elastomer modified silicon rubber oil resisting material co-crosslinking of two rubber phases, has captured the difficult problem of acrylic elastomer and silicon rubber covulcanization.Resulting acrylate modified silicon rubber oil resisting material, its shore hardness is 60-75, tensile strength 〉=7MPa, elongation at break 〉=300%, tear strength 〉=15kN/m; The ASTM3# standard oil carries out 150 ℃ * 70h oil resistant test material mass change≤30%.This material has oil resistance preferably through actual tests, can be used as at materials such as electric wire, damping air lockings and uses in general high low temperature oil resistant environment.
Embodiment
Embodiment 1:
Get raw material ready by following prescription in the present embodiment:
Make acrylic elastomer modified silicon rubber oil resisting material through following steps in the present embodiment:
A, 100 parts of methyl vinyl silicon kautschuks and vinylsiloxane more than 5 parts were mediated in kneader 2 minutes by mass parts;
B, divide 3 addings by mass parts with 50 parts of precipitated silicas and 3 parts of coupling agent KH570, fully mediated 10 minutes each back that adds, and obtains the better performances silicon rubber gross rubber;
C, silicon rubber gross rubber are warming up to 120 ℃, add 5 parts of compatilizers, 20 parts of acrylic elastomers and 1.5 parts of anti-aging agent by mass parts, vacuum kneading 15 minutes, with cooling water temperature to 80 ℃, add 1.5 parts of linking agent dicumyl peroxides and 0.5 part 2 again, 5-dimethyl-2, two (tert-butyl peroxy base) hexanes of 5-are mediated plastic emitting in 3 minutes;
Be cooled to room temperature after d, the plastic emitting, divide two sections to carry out high temperature vulcanized moulding again: 160 ℃ * 20min of one step cure, 180 ℃ * 3h of post vulcanization namely obtains acrylic elastomer modified methyl vinylsiloxane rubber oil resisting material of the present invention.
Embodiment 2:
Get raw material ready by following prescription in the present embodiment:
Make acrylic elastomer modified silicon rubber oil resisting material through following steps in the present embodiment:
A, 100 parts of methyl vinyl silicon kautschuks and vinylsiloxane more than 8 parts were mediated in kneader 3 minutes by mass parts;
B, divide 4 addings by mass parts with 60 parts of precipitated silicas and 5 parts of coupling agent KH560, fully mediated 15 minutes each back that adds, and obtains the better performances silicon rubber gross rubber;
C, silicon rubber gross rubber are warming up to 130 ℃, add 15 parts of compatilizers, 60 parts of acrylic elastomers and 3 parts of anti-aging agent by mass parts, vacuum kneading 25 minutes, with cooling water temperature to 80 ℃, add 1.8 parts of linking agent dicumyl peroxides and 0.6 part 2,5-dimethyl-2, two (tert-butyl peroxy base) hexanes of 5-are mediated plastic emitting in 4 minutes;
Be cooled to room temperature after d, the plastic emitting, divide two sections high temperature vulcanized moulding again: 180 ℃ * 15min of one step cure, 200 ℃ * 4h of post vulcanization namely obtains acrylic elastomer modified methyl vinylsiloxane rubber oil resisting material of the present invention.
Embodiment 3:
Get raw material ready by following prescription in the present embodiment:
Make acrylic elastomer modified silicon rubber oil resisting material through following steps in the present embodiment:
A, by mass parts with 100 parts of methyl vinyl silicon kautschuks, in kneader, mediated 3 minutes with vinylsiloxane more than 8 parts;
B, divide 4 addings by mass parts with 60 parts of thermal silicas and 5 parts of coupling agent KH570, fully mediated 15 minutes each back that adds, and obtains the better performances silicon rubber gross rubber;
C, silicon rubber gross rubber are warming up to 140 ℃, add 60 parts of acrylic elastomers and 3 parts of anti-aging agent by mass parts, vacuum kneading 30 minutes, with cooling water temperature to 80 ℃, add 1.8 parts of linking agent dicumyl peroxides and 0.6 part 2,5-dimethyl-2, two (tert-butyl peroxy base) hexanes of 5-are mediated plastic emitting in 4 minutes;
Be cooled to room temperature after d, the plastic emitting, divide two sections high temperature vulcanized moulding again: 180 ℃ * 15min of one step cure, 200 ℃ * 4h of post vulcanization namely obtains acrylic elastomer modified methyl vinylsiloxane rubber oil resisting material of the present invention.
Embodiment 4:
Get raw material ready by following prescription in the present embodiment:
Make acrylic elastomer modified silicon rubber oil resisting material through following steps in the present embodiment:
A, 100 parts of methyl vinyl silicon kautschuks and vinylsiloxane more than 10 parts were mediated in kneader 3 minutes by mass parts;
B, divide 6 addings by mass parts with 80 parts of thermal silicas and 8 parts of coupling agent KH550, fully mediated 20 minutes each back that adds, and obtains the better performances silicon rubber gross rubber;
C, silicon rubber gross rubber are warming up to 150 ℃, add 20 parts of compatilizers, 80 parts of acrylic elastomers and 5 parts of anti-aging agent by mass parts, vacuum kneading 40 minutes, with cooling water temperature to 80 ℃, add 2.1 parts of linking agent dicumyl peroxides and 0.7 part 2,5-dimethyl-2, two (tert-butyl peroxy base) hexanes of 5-are mediated plastic emitting in 5 minutes;
Be cooled to room temperature after d, the plastic emitting, divide two sections high temperature vulcanized moulding again: 180 ℃ * 20min of one step cure, 200 ℃ * 6h of post vulcanization namely obtains acrylic elastomer modified methyl vinylsiloxane rubber oil resisting material of the present invention.
The test of acrylic elastomer modified silicon rubber composite property:
Press prescription in above-described embodiment and the acrylic elastomer modified silicon rubber matrix material of explained hereafter, its performance through according to GB/T531.1-2008 test vulcanized rubber Shao Er A type shore hardness, by GB/T528-2009 test vulcanized rubber tensile strength and elongation rate of tensile failure is measured, by GB/T529-2008 test vulcanized rubber tear strength, by GB/T1690-2006 test vulcanized rubber oil-proofness, obtain in the performance perameter of acrylic elastomer modified methyl vinylsiloxane rubber oil resisting material of the present invention such as the following table 1 listed:
Table 1 acrylic elastomer modified silicon rubber composite property
As from the foregoing: because the present invention has adopted acrylic elastomer as properties-correcting agent, be applied to improve in the silicon rubber oil-proofness of silicon rubber, compare with silicon rubber blend and preparation method thereof with Chinese patent application number 200810219534.8 viton, the oil-proofness of product of the present invention is significantly improved, and production cost is lower.Because the present invention selects acetic acid-vinyl acetate copolymer increase-volume for use, is applied to improve in the acrylic elastomer modified silicon rubber oil resisting material dispersiveness of acrylic elastomer, overcome acrylic elastomer and disperseed inhomogeneous shortcoming.Because the present invention adopts multiple crosslinking agent, is applied to realize in the acrylic elastomer modified silicon rubber oil resisting material co-crosslinking of two rubber phases, has captured the difficult problem of acrylic elastomer and silicon rubber covulcanization.Resulting acrylate modified silicon rubber oil resisting material, its shore hardness is 60-75, tensile strength 〉=7MPa, elongation at break 〉=300%, tear strength 〉=15kN/m; The ASTM3# standard oil carries out 150 ℃ * 70h oil resistant test material mass change≤30%.This material has oil resistance preferably through actual tests, can be used as at materials such as electric wire, damping air lockings and uses in general high low temperature oil resistant environment.
Claims (2)
1. the preparation method of an acrylic elastomer modified silicon rubber oil resisting material is characterized in that:
A, 100 parts of methyl vinyl silicon kautschuks and the many vinylsiloxanes of 1-10 part were mediated in kneader 1-3 minute by mass parts;
B, by mass parts 50-80 part white carbon black and 3-10 part coupling agent are added several times, fully mediate evenly each back that adds, and obtains silicon rubber gross rubber;
C, silicon rubber gross rubber is warming up to 120-160 ℃, adds 5-20 part compatilizer, 20-80 part acrylic elastomer and 1-5 part anti-aging agent by mass parts, vacuum kneading evenly, logical cooling water temperature to 80 ℃, add linking agent, mediate plastic emitting in 2-5 minute;
Be cooled to room temperature after d, the plastic emitting, divide two sections to carry out high temperature vulcanized moulding again: 160 ℃-180 ℃ of one step cure temperature, curing time 10min-20min; 180 ℃-200 ℃ of post vulcanization temperature, curing time 2h-6h; After sulfuration, namely obtain the oil resisting material of acrylic elastomer modified silicon rubber of the present invention;
Described methyl vinyl silicone rubber, vinyl molar content are 0.05%-0.5%, and molecular weight is 500,000-800,000;
Described many vinylsiloxanes, vinyl molar content 3%-10%;
Described white carbon black is thermal silica or precipitated silica;
Described compatilizer is acetic acid-vinyl acetate copolymer;
Described coupling agent is silane coupling agent KH550, KH560 or KH570, or multiple composite by wherein;
Described anti-aging agent is phenolic antioxidant β-(3.5-di-tert-butyl-hydroxy phenyl) propionic acid ］ pentaerythritol ester (antioxidant 1010) or propenyl functional group three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester (oxidation inhibitor 168), or composite by wherein two kinds;
Described linking agent is organo-peroxide dicumyl peroxide and 2,5-dimethyl-2, two two kinds of (tert-butyl peroxy base) hexanes of 5-are composite, and its compositely proportional is dicumyl peroxide by mass ratio: 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane=3:1 of 5-.
2. adopt the acrylic elastomer modified silicon rubber oil resisting material of the described method preparation of claim 1, it is characterized in that the component mass content is as follows:
Described methyl vinyl silicone rubber, vinyl molar content are 0.05%-0.5%, and molecular weight is 500,000-800,000;
Described many vinylsiloxanes, vinyl molar content 3%-10%;
Described white carbon black is thermal silica or precipitated silica;
Described compatilizer is acetic acid-vinyl acetate copolymer;
Described coupling agent is silane coupling agent KH550, KH560 or KH570, or multiple composite by wherein;
Described anti-aging agent is phenolic antioxidant β-(3.5-di-tert-butyl-hydroxy phenyl) propionic acid ］ pentaerythritol resin (antioxidant 1010) or propenyl functional group three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester (oxidation inhibitor 168), or composite by wherein two kinds;
Described linking agent is organo-peroxide dicumyl peroxide and 2,5-dimethyl-2, two two kinds of (tert-butyl peroxy base) hexanes of 5-are composite, and its compositely proportional is dicumyl peroxide by mass ratio: 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane=3:1 of 5-.
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Cited By (5)
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| CN103554803A (en) * | 2013-11-05 | 2014-02-05 | 天津鹏翎胶管股份有限公司 | Biodiesel-resistant acrylate rubber composition |
| CN103554638A (en) * | 2013-10-25 | 2014-02-05 | 安徽文峰电子科技集团有限公司 | High-heat-resistant oil-resistant ethylene-acrylate rubber cable material |
| CN106589944A (en) * | 2016-12-23 | 2017-04-26 | 厦门克立橡塑有限公司 | Preparation method of interface-reinforced and capacity-increased organic silicon modified rubber-plastic composite material |
| CN108410180A (en) * | 2018-04-24 | 2018-08-17 | 山东东都新材料科技有限公司 | A kind of environment-friendly type silica gel sebific duct and preparation method thereof |
| CN117024897A (en) * | 2023-07-11 | 2023-11-10 | 珠海优亿电子科技有限公司 | Oil-resistant sealing element for transformer and preparation process thereof |
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| CN108410180A (en) * | 2018-04-24 | 2018-08-17 | 山东东都新材料科技有限公司 | A kind of environment-friendly type silica gel sebific duct and preparation method thereof |
| CN117024897A (en) * | 2023-07-11 | 2023-11-10 | 珠海优亿电子科技有限公司 | Oil-resistant sealing element for transformer and preparation process thereof |
| CN117024897B (en) * | 2023-07-11 | 2024-02-20 | 珠海优亿电子科技有限公司 | Oil-resistant sealing element for transformer and preparation process thereof |
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Application publication date: 20130925 |