CN103013131A - High-temperature addition type vulcanized silicon rubber - Google Patents
High-temperature addition type vulcanized silicon rubber Download PDFInfo
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- CN103013131A CN103013131A CN2012105868098A CN201210586809A CN103013131A CN 103013131 A CN103013131 A CN 103013131A CN 2012105868098 A CN2012105868098 A CN 2012105868098A CN 201210586809 A CN201210586809 A CN 201210586809A CN 103013131 A CN103013131 A CN 103013131A
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Abstract
The invention discloses high-temperature addition type vulcanized silicon rubber with a vulcanization temperature of 180 DEG C, and belongs to the technical field of a rubber material. The high-temperature addition type vulcanized silicon rubber is formed by mixing methyl vinyl silicon rubber and a reinforcing material in a kneading machine through physical change and chemical change. The silicon rubber is hydrogen-containing vinyl silicon rubber and has the same function as gas-phase white carbon black; and the silicon rubber is used as the reinforcing material and can also be used as a supplementing cross-linking agent, so as to further improve the performance of vulcanized rubber and particularly greatly improve the breaking strength and the elongation at break. The high-temperature addition type vulcanized silicon rubber disclosed by the invention is short in vulcanization time and long in preservation time, can meet the mechanical performance of the silicon rubber, and has the good heat stability performance.
Description
Technical field
The invention belongs to the elastomeric material technical field, particularly a kind of high temperature add-on type sulphurated siliastic.
Background technology
Without γ-ray emission, easily control the series of advantages such as crosslinking structure when high temperature add-on type sulphurated siliastic has sulfuration, so the research of high temperature addition vulcanization method is subject to people's attention.High temperature add-on type sulphurated siliastic need to can't carry out crosslinking reaction under normal temperature or lesser temps, can preserve the long period, just vulcanize when high temperature process heats the temperature that reaches certain, at present, the curing temperature of high temperature add-on type sulphurated siliastic is below 150 ℃.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of curing temperature and be 180 ℃ high temperature add-on type sulphurated siliastic.
The present invention is achieved by the following technical programs, a kind of high temperature add-on type sulphurated siliastic, and its moiety is counted with mass parts:
Above-mentioned methyl vinyl silicone rubber is basic glue, and molecular-weight average is 590,000 ~ 650,000, and containing the vinyl chain link is 0.03% ~ 8.0%, and hydroxy silicon oil is constitution controller, and Zinic stearas is releasing agent.
Silicone resin is hydrogeneous vinyl polysiloxane, can be identical with the gas-phase silica effect, use as supporting material, and can be used as simultaneously and replenish the linking agent use, can further improve cured properties, especially can increase substantially tensile strength at yield and elongation at break.
The active hydrogen content of containing hydrogen silicone oil is that 0.33% ~ 0.60%(calculates by weight), end group is the Si-H base, and dimethyl silica chain link and methyl hydrogen silica Determination of Chain Element Ratio are 2:1, and this containing hydrogen silicone oil has higher vulcanization rate, and cross-linked rubber has higher tensile strength.
Platinum-divinyl tetramethyl disiloxane is catalyzer, and benzotriazole is inhibitor, can form complex compound with catalyzer, and catalyzer can't be reacted by catalytic crosslinking at normal temperatures.
High temperature add-on type sulphurated siliastic of the present invention, curing time is short, and the shelf time is long, when satisfying silicone rubber mechanical performance, has good thermal stability.
Embodiment
A kind of high temperature add-on type sulphurated siliastic, its moiety is counted with mass parts:
Above-mentioned methyl vinyl silicone rubber is basic glue, and molecular-weight average is 590,000 ~ 650,000, and containing the vinyl chain link is 0.03% ~ 8.0%, and hydroxy silicon oil is constitution controller, and Zinic stearas is releasing agent.
Silicone resin is hydrogeneous vinyl polysiloxane, can be identical with the gas-phase silica effect, use as supporting material, and can be used as simultaneously and replenish the linking agent use, can further improve cured properties, especially can increase substantially tensile strength at yield and elongation at break.
The active hydrogen content of containing hydrogen silicone oil is that 0.33% ~ 0.60%(calculates by weight), end group is the Si-H base, and dimethyl silica chain link and methyl hydrogen silica Determination of Chain Element Ratio are 2:1, and this containing hydrogen silicone oil has higher vulcanization rate, and cross-linked rubber has higher tensile strength.
Platinum-divinyl tetramethyl disiloxane is catalyzer, and benzotriazole is inhibitor, can form complex compound with catalyzer, and catalyzer can't be reacted by catalytic crosslinking at normal temperatures.
The preparation method:
Above-mentioned raw materials is prepared according to following step:
(1) methyl vinyl silicon kautschuk and Zinic stearas were mediated in vacuum kneader 3-5 minute;
(2) white carbon black, silicone resin, containing hydrogen silicone oil and hydroxy silicon oil are added in the kneader several times, fully stir after each the adding, compound is mixed;
(3) after sizing material is kneaded and formed, be warmed up to 160-180 ℃, heat refining 90-120 minute, then be evacuated to vacuum tightness and be-0.05--0.07MPa, vacuumize 30-60 minute after plastic emitting, sizing material is carried out thin-pass 3-5 time at opening rubber mixing machine, filter at rubber strainer at last;
(4) add platinum-divinyl tetramethyl disiloxane and benzotriazole in the rubber unvulcanizate after the filtration, even at mill bag roller, obtain required product.
Product performance:
According to national standard high temperature add-on type sulphurated siliastic of the present invention is tested, the result is as follows:
| Hardness HA | Tensile strength MPa | Tear strength KN/m | Elongation % | Temperature classification |
| 70 | 8.5 | 30.3 | 450 | C |
Here description of the invention and application is illustrative, is not to want that therefore, the present invention is not subjected to the restriction of the present embodiment with scope restriction of the present invention in the above-described embodiments, and the technical scheme that any employing equivalence replacement obtains is all in the scope of protection of the invention.
Claims (4)
1. a high temperature add-on type sulphurated siliastic is characterized in that, its moiety is counted with mass parts:
2. high temperature add-on type sulphurated siliastic as claimed in claim 1 is characterized in that, the molecular-weight average of described methyl vinyl silicone rubber is 590,000 ~ 650,000, and containing the vinyl chain link is 0.03% ~ 8.0%.
3. high temperature add-on type sulphurated siliastic as claimed in claim 1 is characterized in that, described silicone resin is hydrogeneous vinyl polysiloxane.
4. high temperature add-on type sulphurated siliastic as claimed in claim 1 is characterized in that, the active hydrogen content of described containing hydrogen silicone oil is that 0.33% ~ 0.60%(calculates by weight), end group is the Si-H base, dimethyl silica chain link and methyl hydrogen silica Determination of Chain Element Ratio are 2:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105868098A CN103013131A (en) | 2012-12-30 | 2012-12-30 | High-temperature addition type vulcanized silicon rubber |
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| CN2012105868098A CN103013131A (en) | 2012-12-30 | 2012-12-30 | High-temperature addition type vulcanized silicon rubber |
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| CN103013131A true CN103013131A (en) | 2013-04-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319902A (en) * | 2013-06-21 | 2013-09-25 | 江苏天辰硅材料有限公司 | High-temperature vulcanized silicone rubber for cold-contraction cable accessory and preparation method thereof |
| CN103834174A (en) * | 2013-12-31 | 2014-06-04 | 迈高精细高新材料（深圳）有限公司 | Slicone rubber and preparation method thereof |
| CN104610749A (en) * | 2015-02-05 | 2015-05-13 | 东莞新东方科技有限公司 | UV-resistant silicone rubber and preparation method thereof |
| CN105273410A (en) * | 2015-11-04 | 2016-01-27 | 武汉纺织大学 | Preparation method of high-elasticity addition silicone rubber |
| CN109722027A (en) * | 2018-12-04 | 2019-05-07 | 株洲时代新材料科技股份有限公司 | A kind of high springback silicone foamed material and preparation method thereof |
| CN112029289A (en) * | 2020-07-28 | 2020-12-04 | 东莞市朗晟材料科技有限公司 | Ceramic fire-resistant flame-retardant silicone rubber and preparation method and use method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181157A (en) * | 2011-01-27 | 2011-09-14 | 江阴海达橡塑股份有限公司 | Preparation method of extruded thermodynamic shield tunnel duct piece silicon rubber water stop rubber |
| WO2012129766A1 (en) * | 2011-03-28 | 2012-10-04 | Henkel (China) Company Limited | Curable silicone resins for led encapsulation |
-
2012
- 2012-12-30 CN CN2012105868098A patent/CN103013131A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181157A (en) * | 2011-01-27 | 2011-09-14 | 江阴海达橡塑股份有限公司 | Preparation method of extruded thermodynamic shield tunnel duct piece silicon rubber water stop rubber |
| WO2012129766A1 (en) * | 2011-03-28 | 2012-10-04 | Henkel (China) Company Limited | Curable silicone resins for led encapsulation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319902A (en) * | 2013-06-21 | 2013-09-25 | 江苏天辰硅材料有限公司 | High-temperature vulcanized silicone rubber for cold-contraction cable accessory and preparation method thereof |
| CN103834174A (en) * | 2013-12-31 | 2014-06-04 | 迈高精细高新材料（深圳）有限公司 | Slicone rubber and preparation method thereof |
| CN104610749A (en) * | 2015-02-05 | 2015-05-13 | 东莞新东方科技有限公司 | UV-resistant silicone rubber and preparation method thereof |
| CN105273410A (en) * | 2015-11-04 | 2016-01-27 | 武汉纺织大学 | Preparation method of high-elasticity addition silicone rubber |
| CN109722027A (en) * | 2018-12-04 | 2019-05-07 | 株洲时代新材料科技股份有限公司 | A kind of high springback silicone foamed material and preparation method thereof |
| CN112029289A (en) * | 2020-07-28 | 2020-12-04 | 东莞市朗晟材料科技有限公司 | Ceramic fire-resistant flame-retardant silicone rubber and preparation method and use method thereof |
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Application publication date: 20130403 |