CN103694707A - High temperature-resistant silicone rubber additive - Google Patents
High temperature-resistant silicone rubber additive Download PDFInfo
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- CN103694707A CN103694707A CN201310605004.8A CN201310605004A CN103694707A CN 103694707 A CN103694707 A CN 103694707A CN 201310605004 A CN201310605004 A CN 201310605004A CN 103694707 A CN103694707 A CN 103694707A
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Abstract
The invention discloses a high temperature-resistant silicone rubber additive, comprising polyorganometallosiloxane, a cross-linking agent and fumed silica. Combination of the silicone rubber additive and silicone rubber enables heat resistance of silicone rubber to be better improved; with the silicone rubber additive provided by the invention, silicone rubber can be used for a long time in an environment with a temperature of 320 to 350 DEG C and has tearing strength of 31.8 KN/m.
Description
Technical field
The present invention relates to silicon rubber technical field, particularly relate to a kind of high-temperature-resisting silicon rubber additive.
Background technology
Silicon rubber is to carry out copolymerization and the elastocopolymer that makes by cyclic organic siloxane ring-opening polymerization or with different silicones. in long-term operational process, high temperature will impel silicon rubber aging.When surrounding temperature raises, silicon rubber molecular chain constantly obtains energy, when temperature reaches its glutinous stream temperature, so that the free movement of whole piece molecular chain becomes mobile mucus.Now, silicon rubber becomes viscous state from elastomeric state, and mechanical property and insulating property are lost.Modern industry has proposed requirements at the higher level to the thermotolerance of silicon rubber, as high to 300 ℃ or higher to silicon rubber heat-resisting air aging temperature in automotive hose, electronic seal, electric wire, gold stamping printing silicon rubber hot pressing rubber roll offset plate, low-temperature alloy mould, refractory seals part etc. field, therefore the resistance to elevated temperatures that, further improves silicon rubber has very large meaning.Need to there is a kind of new additive, change the modification technologies such as crosslinking method and copolymerization, blend, silicon rubber can be more widely used under comparatively high temps.
Summary of the invention
Object of the present invention is exactly to provide a kind of high-temperature-resisting silicon rubber additive for the defect of above-mentioned existence.Be combined with silicon rubber and can improve better the thermotolerance of silicon rubber, silicon rubber additive of the present invention can be so that silicon rubber be used for a long time under the environment of 320-350 degree Celsius, and tear strength can reach 31.4KN/m.
A kind of high-temperature-resisting silicon rubber additive technology scheme of the present invention is to comprise polyorganometallosiloxane, linking agent, gas-phase silica.
Linking agent is methylethyl silicone oil and hydroxy silicon oil.
Contain following composition by weight: 100 parts of polyorganometallosiloxanes, 25～35 parts of gas-phase silicas, 2～5 parts of methylethyl silicone oil, 3～7 parts of hydroxy silicon oils.
Described silicon rubber is methyl vinyl silicone rubber.
Gas-phase silica is that silanization is processed hydrophobic type gas-phase silica.
The metallic element of described polyorganometallosiloxane is cerium.
Described polyorganometallosiloxane is pressed powder.
Described polyorganometallosiloxane granularity is 1000-1600 order.
The add-on of this additive is that every 100 parts of raw-silastic continuouslies add additive 80-120 part by weight percentage.
Beneficial effect of the present invention is: high-temperature-resisting silicon rubber additive of the present invention adopts containing cerium organopolysiloxane, makes heat-resistant agent simultaneously.Containing cerium organopolysiloxane be a kind of centered by cerium metal, the organosilicon polymer being connected with siloxanes with ionic linkage.As the heat resistance accessory of silicon rubber, good containing cerium organopolysiloxane and silicon rubber consistency, the dispersion in silicon rubber is comparatively even, thereby improves better the thermotolerance of silicon rubber.Hydroxy silicon oil and methylethyl silicone oil play Concentrative crosslinking in this composition, make it produce inhomogeneous Concentrative crosslinking, and the strong point that height of formation is crosslinked, has high tear strength.Through experimental verification, the product that silicon rubber additive of the present invention and raw-silastic continuously are prepared into can be used for a long time under the environment of 320-350 degree Celsius, and tear strength can reach 31.8KN/m.
embodiment:
In order to understand better the present invention, with specific examples, describe technical scheme of the present invention in detail below, but the present invention is not limited thereto.
Embodiment 1
A kind of high-temperature-resisting silicon rubber additive of the present invention, specifically contains following composition by weight: 100 parts of polyorganometallosiloxanes, 28 parts of gas-phase silicas, 4 parts of methylethyl silicone oil, 6 parts of hydroxy silicon oils.
Gas-phase silica is that silanization is processed hydrophobic type gas-phase silica.
The metallic element of described polyorganometallosiloxane is cerium.
Described polyorganometallosiloxane is pressed powder.
Described polyorganometallosiloxane granularity is 1000-1600 order.
The product that silicon rubber additive of the present invention and raw-silastic continuously are prepared into can be used for a long time under the environment of 320-350 degree Celsius, and tear strength can reach 31.8KN/m.
Embodiment 2
A kind of high-temperature-resisting silicon rubber additive of the present invention, specifically contains following composition by weight: 100 parts of polyorganometallosiloxanes, 35 parts of gas-phase silicas, 5 parts of methylethyl silicone oil, 7 parts of hydroxy silicon oils.
Gas-phase silica is that silanization is processed hydrophobic type gas-phase silica.
The metallic element of described polyorganometallosiloxane is cerium.
Described polyorganometallosiloxane is pressed powder.
Described polyorganometallosiloxane granularity is 1000-1600 order.
Silicon rubber of the present invention can be used for a long time under the environment of 320-350 degree Celsius, and tear strength can reach 31.2KN/m.
Embodiment 3
A kind of high-temperature-resisting silicon rubber additive of the present invention, specifically contains following composition by weight: 100 parts of polyorganometallosiloxanes, 20 parts of gas-phase silicas, 5 parts of methylethyl silicone oil, 3 parts of hydroxy silicon oils.
Gas-phase silica is that silanization is processed hydrophobic type gas-phase silica.
The metallic element of described polyorganometallosiloxane is cerium.
Described polyorganometallosiloxane is pressed powder.
Described polyorganometallosiloxane granularity is 1000-1600 order.
Silicon rubber of the present invention can be used for a long time under the environment of 320-350 degree Celsius, and tear strength can reach 31.3KN/m.
Claims (9)
1. a high-temperature-resisting silicon rubber additive, is characterized in that, comprises polyorganometallosiloxane, linking agent, gas-phase silica.
2. a kind of high-temperature-resisting silicon rubber additive according to claim 1, is characterized in that, linking agent is methylethyl silicone oil and hydroxy silicon oil.
3. a kind of high-temperature-resisting silicon rubber additive according to claim 2, it is characterized in that, contain following composition by weight: 100 parts of polyorganometallosiloxanes, 25～35 parts of gas-phase silicas, 2～5 parts of methylethyl silicone oil, 3～7 parts of hydroxy silicon oils.
4. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, described silicon rubber is methyl vinyl silicone rubber.
5. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, gas-phase silica is that silanization is processed hydrophobic type gas-phase silica.
6. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, the metallic element of described polyorganometallosiloxane is cerium.
7. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, described polyorganometallosiloxane is pressed powder.
8. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, described polyorganometallosiloxane granularity is 1000-1600 order.
9. a kind of high-temperature-resisting silicon rubber additive according to claim 3, is characterized in that, the add-on of this additive is by weight percentage, and every 100 parts of raw-silastic continuouslies add additive 80-120 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605004.8A CN103694707A (en) | 2013-11-26 | 2013-11-26 | High temperature-resistant silicone rubber additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605004.8A CN103694707A (en) | 2013-11-26 | 2013-11-26 | High temperature-resistant silicone rubber additive |
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| CN103694707A true CN103694707A (en) | 2014-04-02 |
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| CN201310605004.8A Pending CN103694707A (en) | 2013-11-26 | 2013-11-26 | High temperature-resistant silicone rubber additive |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317883A (en) * | 2016-08-19 | 2017-01-11 | 蚌埠市英路光电有限公司 | Anti-ageing high-heat-conductivity silicone rubber thermal interface material for LED and preparation method |
| CN108779293A (en) * | 2016-03-23 | 2018-11-09 | 美国陶氏有机硅公司 | Metal-polysiloxane |
| CN115746565A (en) * | 2022-10-13 | 2023-03-07 | 隆基绿能科技股份有限公司 | Room temperature vulcanized silicone rubber and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899214A (en) * | 2010-04-19 | 2010-12-01 | 上海爱世博有机硅材料有限公司 | Silicon rubber heat-resisting additive and method |
| CN102234427A (en) * | 2010-04-29 | 2011-11-09 | 比亚迪股份有限公司 | Silicone rubber composition and preparation method of silicone rubber |
| CN102643550A (en) * | 2012-04-28 | 2012-08-22 | 宜兴市聚金信化工有限公司 | High-temperature-resistant silicon rubber additive and method |
-
2013
- 2013-11-26 CN CN201310605004.8A patent/CN103694707A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899214A (en) * | 2010-04-19 | 2010-12-01 | 上海爱世博有机硅材料有限公司 | Silicon rubber heat-resisting additive and method |
| CN102234427A (en) * | 2010-04-29 | 2011-11-09 | 比亚迪股份有限公司 | Silicone rubber composition and preparation method of silicone rubber |
| CN102643550A (en) * | 2012-04-28 | 2012-08-22 | 宜兴市聚金信化工有限公司 | High-temperature-resistant silicon rubber additive and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108779293A (en) * | 2016-03-23 | 2018-11-09 | 美国陶氏有机硅公司 | Metal-polysiloxane |
| CN108779293B (en) * | 2016-03-23 | 2021-01-12 | 美国陶氏有机硅公司 | Metal-polyorganosiloxanes |
| US11021607B2 (en) | 2016-03-23 | 2021-06-01 | Dow Silicones Corporation | Metal-polyorganosiloxanes |
| CN106317883A (en) * | 2016-08-19 | 2017-01-11 | 蚌埠市英路光电有限公司 | Anti-ageing high-heat-conductivity silicone rubber thermal interface material for LED and preparation method |
| CN115746565A (en) * | 2022-10-13 | 2023-03-07 | 隆基绿能科技股份有限公司 | Room temperature vulcanized silicone rubber and preparation method and application thereof |
| CN115746565B (en) * | 2022-10-13 | 2023-08-29 | 隆基绿能科技股份有限公司 | Room temperature vulcanized silicone rubber and preparation method and application thereof |
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Application publication date: 20140402 |