CN102876050A - High-temperature vulcanized silicone rubber with ultralow hardness and method for preparing same - Google Patents
High-temperature vulcanized silicone rubber with ultralow hardness and method for preparing same Download PDFInfo
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- CN102876050A CN102876050A CN2012104352439A CN201210435243A CN102876050A CN 102876050 A CN102876050 A CN 102876050A CN 2012104352439 A CN2012104352439 A CN 2012104352439A CN 201210435243 A CN201210435243 A CN 201210435243A CN 102876050 A CN102876050 A CN 102876050A
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Abstract
The invention discloses a high-temperature vulcanized silicone rubber with ultralow hardness and a method for preparing the high-temperature vulcanized silicone rubber with ultralow hardness. The silicone rubber has good flexibility, cushioning properties and physiological inertness, can achieve a good sealing effect under the condition of low sealing pressure, can be applied to the product under the special application condition and hereby has a wide range of application.
Description
Technical field
The present invention relates to a kind of high-temperature silicon disulfide rubber with super-low-hardness and preparation method thereof, belong to the elastomeric material technical field.
Background technology
The soft high-temperature silicon disulfide rubber is a kind of have softness and harmless resilient material of environment-protecting asepsis after transparent appearance, the sulfuration, can be applicable on the products such as various daily necessitiess, articles for swimming, anti-vibration article, paster and industrial sundries such as slipmat.Under some condition that need seal, the sealing force that can apply is very little, so wish that the hardness of silicon rubber is the smaller the better.Existing soft silicon rubber mostly is room temperature vulcanized silicone rubber and fluid silicone rubber, and that the hardness of high-temperature silicon disulfide rubber is compared usually with it is higher, therefore extremely important to the expansion of the Application Areas of high-temperature silicon disulfide rubber for the research of soft high-temperature silicon disulfide rubber.
Summary of the invention
The object of the invention is to overcome defective of the prior art, a kind of high-temperature silicon disulfide rubber with super-low-hardness and preparation method thereof is provided, described silicon rubber has good snappiness, resiliency and physiology inertia, also can use on the product under the special applications condition to guarantee it.
The present invention is achieved by the following technical programs.
A kind of high-temperature silicon disulfide rubber with super-low-hardness, its moiety is counted with mass parts:
Above-mentioned a kind of high-temperature silicon disulfide rubber with super-low-hardness, wherein, the molecular-weight average of described methyl vinyl silicon kautschuk is 590,000, the quality percentage composition of vinyl is 0.03%.
Above-mentioned a kind of high-temperature silicon disulfide rubber with super-low-hardness, wherein, the molecular-weight average of described methyl vinyl silicon kautschuk is 610,000, the quality percentage composition of vinyl is 0.16%.
Above-mentioned a kind of high-temperature silicon disulfide rubber with super-low-hardness, wherein, described white carbon black is vapor phase process or precipitated silica.
Above-mentioned a kind of high-temperature silicon disulfide rubber with super-low-hardness, wherein, described anti-yellowing dose is containing hydrogen silicone oil, described Silicon Containing Hydrogen oil viscosity is 17.00mm
2/ s.
Above-mentioned a kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness, preparation process is as follows: at first add methyl vinyl silicon kautschuk in vacuum kneader, hydroxyl polydimethylsiloxane and Zinic stearas were mediated 3-5 minute, add again containing hydrogen silicone oil, and add several times white carbon black and hydroxy silicon oil in the vacuum kneader, fully stir after each the adding, compound is mixed, after sizing material is kneaded and formed, be warmed up to 160-180 ℃, heat refining 90-120 minute, then being evacuated to vacuum tightness is-0.07--0.05MPa, plastic emitting after vacuumizing 30-60 minute, then with sizing material thin-pass 3-5 time on opening rubber mixing machine, filter at rubber strainer again, obtain clean pure sizing material, then with this sizing material and 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane mixes in opening rubber mixing machine, and on vulcanizing press, carry out molded vulcanization, curing temperature is 175-180 ℃, sulfide stress is 15-20MPa, curing time is 15-20min, can obtain described high-temperature silicon disulfide rubber with super-low-hardness.
Above-mentioned a kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness wherein, divides white carbon black and hydroxy silicon oil 4 times and adds in the vacuum kneader.
A kind of high-temperature silicon disulfide rubber with super-low-hardness of the present invention and preparation method thereof, described silicon rubber has good snappiness, resiliency and physiology inertia, can guarantee in the situation of lower sealing load, can reach good sealing effectiveness, also can use on the product under the special applications condition thereby satisfied it, widen the Application Areas of high-temperature silicon disulfide rubber.
Embodiment
Embodiment 1
A kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness, preparation process is as follows: at first add 100 parts of methyl vinyl silicon kautschuks in vacuum kneader, 0.12 part of kneading of 0.1 part of hydroxyl polydimethylsiloxane and Zinic stearas 3 minutes, add again 1.0 parts of containing hydrogen silicone oils, and add for 0.2 part minute 3 times 0.5 part of thermal silica and hydroxy silicon oil in the vacuum kneader, fully stir after each the adding, compound is mixed, after sizing material is kneaded and formed, be warmed up to 160 ℃, heat refining 90 minutes, then being evacuated to vacuum tightness is-0.07MPa, plastic emitting after vacuumizing 30 minutes, then with sizing material thin-pass 3 times on opening rubber mixing machine, filter at rubber strainer again, obtain clean pure sizing material, then with this sizing material and 2,5-dimethyl-2,0.5 part of 5-bis(t-butylperoxy) hexane mixes in opening rubber mixing machine, and on vulcanizing press, carry out molded vulcanization, curing temperature is 175 ℃, sulfide stress is 15MPa, curing time is 15min, can obtain described high-temperature silicon disulfide rubber with super-low-hardness.
Embodiment 2
A kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness, preparation process is as follows: at first add 100 parts of methyl vinyl silicon kautschuks in vacuum kneader, 0.18 part of kneading of 0.3 part of hydroxyl polydimethylsiloxane and Zinic stearas 4 minutes, add again 1.2 parts of containing hydrogen silicone oils, and add for 0.6 part minute 4 times 1.2 parts of precipitated silicas and hydroxy silicon oil in the vacuum kneader, fully stir after each the adding, compound is mixed, after sizing material is kneaded and formed, be warmed up to 170 ℃, heat refining 110 minutes, then being evacuated to vacuum tightness is-0.06MPa, plastic emitting after vacuumizing 45 minutes, then with sizing material thin-pass 4 times on opening rubber mixing machine, filter at rubber strainer again, obtain clean pure sizing material, then with this sizing material and 2,5-dimethyl-2,0.8 part of 5-bis(t-butylperoxy) hexane mixes in opening rubber mixing machine, and on vulcanizing press, carry out molded vulcanization, curing temperature is 178 ℃, sulfide stress is 18MPa, curing time is 18min, can obtain described high-temperature silicon disulfide rubber with super-low-hardness.
Embodiment 3
A kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness, preparation process is as follows: at first add 100 parts of methyl vinyl silicon kautschuks in vacuum kneader, 0.21 part of kneading of 0.5 part of hydroxyl polydimethylsiloxane and Zinic stearas 5 minutes, add again 1.5 parts of containing hydrogen silicone oils, and add for 0.8 part minute 5 times 1.7 parts of precipitated silicas and hydroxy silicon oil in the vacuum kneader, fully stir after each the adding, compound is mixed, after sizing material is kneaded and formed, be warmed up to 180 ℃, heat refining 120 minutes, then being evacuated to vacuum tightness is-0.05MPa, plastic emitting after vacuumizing 60 minutes, then with sizing material thin-pass 5 times on opening rubber mixing machine, filter at rubber strainer again, obtain clean pure sizing material, then with this sizing material and 2,5-dimethyl-2,1.0 parts of 5-bis(t-butylperoxy) hexanes mix in opening rubber mixing machine, and on vulcanizing press, carry out molded vulcanization, curing temperature is 180 ℃, sulfide stress is 20MPa, curing time is 20min, can obtain described high-temperature silicon disulfide rubber with super-low-hardness.
Product performance:
According to national standard silicon rubber of the present invention is tested, the result is as follows:
| Test event | Unit | Test result |
| Density | g/cm 3 | 1.02 |
| Outward appearance | - | Transparent |
| Shore hardness | HA | 2 |
| Tensile strength | MPa | 1.0 |
| Tensile yield | % | 800 |
| Tear strength | KN/m | 10 |
| Linear shrinkage ratio | % | 3.76 |
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 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 (7)
1. the high-temperature silicon disulfide rubber with super-low-hardness is characterized in that, its moiety is counted with mass parts:
100 parts of methyl vinyl silicon kautschuks
Hydroxyl polydimethylsiloxane 0.1-0.5 part
White carbon black 0.5-1.7 part
Hydroxy silicon oil 0.2-0.8 part
Zinic stearas 0.12-0.21 part
2,5-dimethyl-2,5-bis(t-butylperoxy) hexane 0.5-1.0 part
Anti-yellowing dose of 1.0-1.5 part.
2. a kind of high-temperature silicon disulfide rubber with super-low-hardness as claimed in claim 1 is characterized in that, the molecular-weight average of described methyl vinyl silicon kautschuk is 590,000, and the quality percentage composition of vinyl is 0.03%.
3. a kind of high-temperature silicon disulfide rubber with super-low-hardness as claimed in claim 1 is characterized in that, the molecular-weight average of described methyl vinyl silicon kautschuk is 610,000, and the quality percentage composition of vinyl is 0.16%.
4. a kind of high-temperature silicon disulfide rubber with super-low-hardness as claimed in claim 1 is characterized in that, described white carbon black is vapor phase process or precipitated silica.
5. a kind of high-temperature silicon disulfide rubber with super-low-hardness as claimed in claim 1 is characterized in that, described anti-yellowing dose is containing hydrogen silicone oil, and described Silicon Containing Hydrogen oil viscosity is 17.00mm
2/ s.
6. a kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness as claimed in claim 1, it is characterized in that, preparation process is as follows: at first add methyl vinyl silicon kautschuk in vacuum kneader, hydroxyl polydimethylsiloxane and Zinic stearas were mediated 3-5 minute, add again containing hydrogen silicone oil, and add several times white carbon black and hydroxy silicon oil in the vacuum kneader, fully stir after each the adding, compound is mixed, after sizing material is kneaded and formed, be warmed up to 160-180 ℃, heat refining 90-120 minute, then being evacuated to vacuum tightness is-0.07--0.05MPa, plastic emitting after vacuumizing 30-60 minute, then with sizing material thin-pass 3-5 time on opening rubber mixing machine, filter at rubber strainer again, obtain clean pure sizing material, then with this sizing material and 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane mixes in opening rubber mixing machine, and on vulcanizing press, carry out molded vulcanization, curing temperature is 175-180 ℃, sulfide stress is 15-20MPa, and curing time is 15-20min, can obtain described high-temperature silicon disulfide rubber with super-low-hardness.
7. a kind of preparation method with high-temperature silicon disulfide rubber of super-low-hardness as claimed in claim 6 is characterized in that, divides white carbon black and hydroxy silicon oil 4 times and adds in the vacuum kneader.
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Cited By (10)
| 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 |
| CN103333500A (en) * | 2013-06-21 | 2013-10-02 | 江苏天辰硅材料有限公司 | High-electrical property silicone rubber and preparation method thereof |
| CN103613936A (en) * | 2013-12-09 | 2014-03-05 | 江苏天辰硅材料有限公司 | Oil-resistant high temperature silicon sulfide rubber |
| CN103613935A (en) * | 2013-12-09 | 2014-03-05 | 江苏天辰硅材料有限公司 | Low-hardness extrusion rubber and preparation method thereof |
| CN105482466A (en) * | 2015-12-24 | 2016-04-13 | 佛山市华联有机硅有限公司 | Low-hardness high-strength silicon rubber and preparation method thereof |
| CN107936574A (en) * | 2017-12-01 | 2018-04-20 | 佛山市华联有机硅有限公司 | A kind of preparation method of precipitated silica reinforcement silicon rubber |
| CN108776214A (en) * | 2017-10-16 | 2018-11-09 | 中国电力科学研究院有限公司武汉分院 | A kind of determination method of excellent electromechanical properties HTV insulating materials curing parameters |
| CN110499099A (en) * | 2019-09-09 | 2019-11-26 | 北京中硅高电科技有限公司 | Antistatic anti-pollution flashover coating and preparation method thereof |
| CN112063176A (en) * | 2020-09-10 | 2020-12-11 | 江苏天辰新材料股份有限公司 | Addition type encapsulating silicon rubber for encapsulating transformer and preparation method thereof |
| CN113150556A (en) * | 2021-04-08 | 2021-07-23 | 苏州歌诗夫新材料有限公司 | Ultralow-hardness high-temperature vulcanized silicone rubber material and preparation method thereof |
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| CN101157801A (en) * | 2007-09-19 | 2008-04-09 | 上海回天化工新材料有限公司 | Highly ripping-resistant high temperature sulfidation silicon rubber and method for making same |
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- 2012-11-05 CN CN2012104352439A patent/CN102876050A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101157801A (en) * | 2007-09-19 | 2008-04-09 | 上海回天化工新材料有限公司 | Highly ripping-resistant high temperature sulfidation silicon rubber and method for making same |
Cited By (12)
| 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 |
| CN103333500A (en) * | 2013-06-21 | 2013-10-02 | 江苏天辰硅材料有限公司 | High-electrical property silicone rubber and preparation method thereof |
| CN103333500B (en) * | 2013-06-21 | 2016-08-10 | 江苏天辰新材料股份有限公司 | A kind of High-electrical property silicone rubber and preparation method thereof |
| CN103613936A (en) * | 2013-12-09 | 2014-03-05 | 江苏天辰硅材料有限公司 | Oil-resistant high temperature silicon sulfide rubber |
| CN103613935A (en) * | 2013-12-09 | 2014-03-05 | 江苏天辰硅材料有限公司 | Low-hardness extrusion rubber and preparation method thereof |
| CN105482466A (en) * | 2015-12-24 | 2016-04-13 | 佛山市华联有机硅有限公司 | Low-hardness high-strength silicon rubber and preparation method thereof |
| CN108776214A (en) * | 2017-10-16 | 2018-11-09 | 中国电力科学研究院有限公司武汉分院 | A kind of determination method of excellent electromechanical properties HTV insulating materials curing parameters |
| CN107936574A (en) * | 2017-12-01 | 2018-04-20 | 佛山市华联有机硅有限公司 | A kind of preparation method of precipitated silica reinforcement silicon rubber |
| CN110499099A (en) * | 2019-09-09 | 2019-11-26 | 北京中硅高电科技有限公司 | Antistatic anti-pollution flashover coating and preparation method thereof |
| CN110499099B (en) * | 2019-09-09 | 2021-11-02 | 北京中硅高电科技有限公司 | Antistatic anti-pollution flashover coating and preparation method thereof |
| CN112063176A (en) * | 2020-09-10 | 2020-12-11 | 江苏天辰新材料股份有限公司 | Addition type encapsulating silicon rubber for encapsulating transformer and preparation method thereof |
| CN113150556A (en) * | 2021-04-08 | 2021-07-23 | 苏州歌诗夫新材料有限公司 | Ultralow-hardness high-temperature vulcanized silicone rubber material and preparation method thereof |
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Application publication date: 20130116 |