CN101735620B - High-temperature resisting methyl vinyl silicone rubber - Google Patents
High-temperature resisting methyl vinyl silicone rubber Download PDFInfo
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- CN101735620B CN101735620B CN2009102172834A CN200910217283A CN101735620B CN 101735620 B CN101735620 B CN 101735620B CN 2009102172834 A CN2009102172834 A CN 2009102172834A CN 200910217283 A CN200910217283 A CN 200910217283A CN 101735620 B CN101735620 B CN 101735620B
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 25
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 18
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 title claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 6
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000003292 glue Substances 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 230000001404 mediated effect Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- OGPNXGJLKXGASM-UHFFFAOYSA-N [Si].CC=C Chemical compound [Si].CC=C OGPNXGJLKXGASM-UHFFFAOYSA-N 0.000 claims description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- XQSFXFQDJCDXDT-UHFFFAOYSA-N hydroxysilicon Chemical compound [Si]O XQSFXFQDJCDXDT-UHFFFAOYSA-N 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 6
- 230000032683 aging Effects 0.000 abstract description 4
- 239000006229 carbon black Substances 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 206010020843 Hyperthermia Diseases 0.000 description 5
- 230000036031 hyperthermia Effects 0.000 description 5
- 150000003376 silicon Chemical class 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 229920000260 silastic Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses high-temperature resisting methyl vinyl silicone rubber as well as a prescription and a preparation process thereof. The high-temperature resisting modified silicon rubber material which has more than 300 DEG C of application temperature and can not crack when according with requirements of 550 DEG C, 4mm distance and high-temperature radiation for more than 12 minutes is prepared by adopting the following steps of: adding cerium oxide and polymide into the prescription in which methyl vinyl silicon crude rubber is taken as a rubber raw material to improve the heat-resisting temperature, adding hydroxy silicone oil, dimethyl silicon oil and a silane coupling agent to improve the oil-resisting performance, adding precipitation method white carbon black and gas-phase method white carbon black to improve the tearing-resistance strength, adding quartz power and kieselguhr to improve the tensile strength and matching technical schemes of the preparation process. The high-temperature resisting methyl vinyl silicone rubber overcomes the problems and the defects of poor high-temperature and aging resistance performance and short service life of the common silicone rubber in the prior art, satisfies the special requirements for the heat-resisting performance, the electrical strength and the mechanical strength of automotive rubber products, and ensures that the silicone rubber products achieve the aims of improving the high-temperature resistance performance and prolonging the service life.
Description
Technical field
The present invention relates to a kind of modified silicon rubber material and preparation method thereof, specifically be meant purposes such as being used to make automotive ignition cable sheath, sebific duct, sealing-ring, possess high insulation, high electromagnetic damping, high temperature resistant, anticorona, high anti-tearing strength, anti-ly subdue, a kind of high-temperature resisting methyl vinyl silicone rubber of oil resistant swelling, ageing-resistant be full of cracks performance.
Background technology
The common methyl vinyl silicone rubber of prior art have good anti-ly subdue, tensile strength, elongation and oil resistant, resistance toheat, but, raising along with the speed of a motor vehicle, engine temperature increases, at 550 ℃, 4 millimeters of distances, under the requirement condition of hyperthermia radiation more than 12 minutes, the common methyl vinyl silicone rubber surface ag(e)ing be full of cracks that is used for automotive ignition cable sheath, sebific duct is serious, has shortened the work-ing life of silicon rubber greatly, therefore, the ordinary silicon rubber of prior art exists high temperature resistant aging resistance poor, the problems and shortcomings that work-ing life is short.
Summary of the invention
Problems and shortcomings at above-mentioned prior art existence, it is being in the prescription of rubber raw materials with the methyl ethylene silicon raw rubber that the present invention takes, add cerium oxide, polyimide improves heat resisting temperature, add hydroxy silicon oil, dimethyl silicone oil, silane coupling agent improves oil resistance, add precipitated silica, thermal silica improves tearing toughness, add silica powder, diatomite improves tensile strength, and supporting technical scheme with preparation technology's method, a kind of high-temperature resisting methyl vinyl silicone rubber is provided, be intended to prepare and use heatproof more than 300 ℃, meet the requirements 550 ℃, 4 millimeters of distances, the resistant to elevated temperatures modified silicon rubber material that hyperthermia radiation did not chap more than 12 minutes, to satisfy the automobile rubber goods to resistance toheat, electrical strength, the particular requirement of physical strength makes silastic product reach the raising resistance to elevated temperatures, the purpose that increases the service life.
The object of the present invention is achieved like this: a kind of high-temperature resisting methyl vinyl silicone rubber, comprise prescription, preparation technology's method, and wherein: described prescription is rubber raw materials: methyl ethylene silicon raw rubber, 39.9%; Oil packing: hydroxy silicon oil 1.6%, dimethyl silicone oil 0.4%; Silane coupling agent: trade(brand)name WD-27, vinyl three ('beta '-methoxy oxyethyl group) silane 0.4%; Vulcanizing agent: trade(brand)name DCP, dicumyl peroxide 1.6%; Weighting agent: silica powder 4%, diatomite 4%; Heat-resisting additive: cerium oxide 4%, polyimide 4%; Strengthening agent: precipitated silica 19.9%, thermal silica 19.9%; Promoting agent: Zinic stearas 0.3%; The prescription unit is weight percentage;
Described preparation technology's method is mixing, wherein,
Step 1, adjustment Banbury mixer temperature: 100 ℃, rotating speed: 32 rev/mins, the strengthening agent in rubber raw materials and the prescription, weighting agent, oil packing, promoting agent are dropped into Banbury mixer, the banburying of under the briquetting that floats, starting shooting, about 60 minutes, shut down, add heat-resisting additive, silane coupling agent, the start banburying, about 30 minutes, the glue temperature control obtained banburying glue at 110～120 ℃, binder removal moves to kneader;
In step 2, the kneader with 200 ℃ of the prior preheating temperatures of banburying glue input, with the logical nitrogen of 5 cubic meters per minute speed, 35 rev/mins of rotating speeds, 170～200 ℃ of glue temperature were mediated 30 minutes; Vacuumize then, vacuum tightness 0.05～0.06MPa, 170～200 ℃ of glue temperature were mediated 20 minutes, and binder removal obtains to mediate glue;
Step 3, will mediate glue and drop into twin-screw extruder, evenly the vulcanizing agent that adds in the prescription is mixing, and roller temperature is below 40 ℃, 4～5 millimeters of roll spacings, and mixing 5 minutes, following sheet clot, cooling was left standstill slaking 8 hours～24 hours, the acquisition rubber unvulcanizate.
Beneficial effect
The rubber unvulcanizate of above-mentioned acquisition, be and use heatproof more than 300 ℃, meet the requirements 550 ℃, 4 millimeters of distances, the high-temperature resisting methyl vinyl silicone rubber material that hyperthermia radiation did not chap more than 12 minutes uses for making goods such as automotive ignition cable sheath, sebific duct, sealing-ring.Goods are using below 300 ℃, and the life-span can reach more than 5 years.
To sum up, it is being in the prescription of rubber raw materials with the methyl ethylene silicon raw rubber that the present invention takes, add cerium oxide, polyimide improves heat resisting temperature, add hydroxy silicon oil, dimethyl silicone oil, silane coupling agent improves oil resistance, add precipitated silica, thermal silica improves tearing toughness, add silica powder, diatomite improves tensile strength, and supporting technical scheme with preparation technology's method, prepare and use heatproof more than 300 ℃, meet the requirements 550 ℃, 4 millimeters of distances, the resistant to elevated temperatures modified silicon rubber material that hyperthermia radiation did not chap more than 12 minutes, the ordinary silicon rubber that has overcome prior art exists high temperature resistant aging resistance poor, the problems and shortcomings that work-ing life is short, a kind of high-temperature resisting methyl vinyl silicone rubber that is provided, the automobile rubber goods have been satisfied to resistance toheat, electrical strength, the particular requirement of physical strength makes silastic product reach the raising resistance to elevated temperatures, the purpose that increases the service life.
The embodiment explanation
Below by specific embodiment to high-temperature resisting methyl vinyl silicone rubber of the present invention, be described in further detail, the those skilled in the art can make high-temperature resisting methyl vinyl silicone rubber with reference to prescription and the preparation method of embodiment, but should not be construed as any limitation of the invention.
Embodiment
Embodiment
The name of an article: high-temperature resisting methyl vinyl silicone rubber
Prescription: the prescription unit is weight percentage;
Rubber raw materials: methyl ethylene silicon raw rubber, 39.9%;
Oil packing: hydroxy silicon oil 1.6%, dimethyl silicone oil 0.4%;
Silane coupling agent: trade(brand)name WD-27, vinyl three ('beta '-methoxy oxyethyl group) silane 0.4%;
Vulcanizing agent: trade(brand)name DCP, dicumyl peroxide 1.6%;
Weighting agent: silica powder 4%, diatomite 4%;
Heat-resisting additive: cerium oxide 4%, polyimide 4%;
Strengthening agent: precipitated silica 19.9%, thermal silica 19.9%;
Promoting agent: Zinic stearas 0.3%;
The prescription unit is weight percentage.
Preparation
Environment: room temperature, normal pressure;
Equipment: Banbury mixer, vacuum kneader, two roller opening rubber mixing machines.
Preparation technology's method, mixing;
Step 1, adjustment Banbury mixer temperature: 100 ℃, rotating speed: 32 rev/mins, the strengthening agent in rubber raw materials and the prescription, weighting agent, oil packing, promoting agent are dropped into Banbury mixer, the banburying of under the briquetting that floats, starting shooting, about 60 minutes, shut down, add heat-resisting additive, silane coupling agent, the start banburying, about 30 minutes, the glue temperature control obtained banburying glue at 110～120 ℃, binder removal moves to kneader;
In step 2, the kneader with 200 ℃ of the prior preheating temperatures of banburying glue input, with the logical nitrogen of 5 cubic meters per minute speed, 35 rev/mins of rotating speeds, 170～200 ℃ of glue temperature were mediated 30 minutes; Vacuumize then, vacuum tightness 0.05～0.06MPa, 170～200 ℃ of glue temperature were mediated 20 minutes, and binder removal obtains to mediate glue;
Step 3, will mediate glue and drop into twin-screw extruder, evenly the vulcanizing agent that adds in the prescription is mixing, and roller temperature is below 40 ℃, 4～5 millimeters of roll spacings, and mixing 5 minutes, following sheet clot, cooling was left standstill slaking 8 hours～24 hours, the acquisition rubber unvulcanizate.
The rubber unvulcanizate that obtains, be and use heatproof more than 300 ℃, meet the requirements 550 ℃, 4 millimeters of distances, the high-temperature resisting methyl vinyl silicone rubber material that hyperthermia radiation did not chap more than 12 minutes uses for making goods such as automotive ignition cable sheath, sebific duct, sealing-ring.
Claims (1)
1. the preparation method of a high-temperature resisting methyl vinyl silicone rubber is characterized in that: comprise and filling a prescription and preparation technology's method that described prescription is rubber raw materials: methyl ethylene silicon raw rubber, 39.9%; Oil packing: hydroxy silicon oil 1.6%, dimethyl silicone oil 0.4%; Silane coupling agent: trade(brand)name WD-27, vinyl three ('beta '-methoxy oxyethyl group) silane 0.4%; Vulcanizing agent: trade(brand)name DCP, dicumyl peroxide 1.6%; Weighting agent: silica powder 4%, diatomite 4%; Heat-resisting additive: cerium oxide 4%, polyimide 4%; Strengthening agent: precipitated silica 19.9%, thermal silica 19.9%; Promoting agent: Zinic stearas 0.3%; The prescription unit is weight percentage;
Described preparation technology's method is mixing;
Step 1, adjustment Banbury mixer temperature: 100 ℃, rotating speed: 32 rev/mins, the strengthening agent in rubber raw materials and the prescription, weighting agent, oil packing, promoting agent are dropped into Banbury mixer, the banburying of under the briquetting that floats, starting shooting, 60 minutes, shut down, add heat-resisting additive, silane coupling agent, the start banburying, 30 minutes, the glue temperature control obtained banburying glue at 110～120 ℃, binder removal moves to kneader;
In step 2, the kneader with 200 ℃ of the prior preheating temperatures of banburying glue input, with the logical nitrogen of 5 cubic meters per minute speed, 35 rev/mins of rotating speeds, 170～200 ℃ of glue temperature were mediated 30 minutes; Vacuumize then, vacuum tightness 0.05～0.06MPa, 170～200 ℃ of glue temperature were mediated 20 minutes, and binder removal obtains to mediate glue;
Step 3, will mediate glue and drop into twin-screw extruder, evenly the vulcanizing agent that adds in the prescription is mixing, and roller temperature is below 40 ℃, 4～5 millimeters of roll spacings, and mixing 5 minutes, following sheet clot, cooling was left standstill slaking 8 hours～24 hours, the acquisition rubber unvulcanizate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102172834A CN101735620B (en) | 2009-12-27 | 2009-12-27 | High-temperature resisting methyl vinyl silicone rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102172834A CN101735620B (en) | 2009-12-27 | 2009-12-27 | High-temperature resisting methyl vinyl silicone rubber |
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| Publication Number | Publication Date |
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| CN101735620A CN101735620A (en) | 2010-06-16 |
| CN101735620B true CN101735620B (en) | 2011-08-03 |
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