CN108912693A - A kind of silicone rubber formulations of long-life - Google Patents
A kind of silicone rubber formulations of long-life Download PDFInfo
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- CN108912693A CN108912693A CN201811036154.0A CN201811036154A CN108912693A CN 108912693 A CN108912693 A CN 108912693A CN 201811036154 A CN201811036154 A CN 201811036154A CN 108912693 A CN108912693 A CN 108912693A
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- silicone rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of long-life silicone rubber formulations, compositions（Mass parts）For：70-85 parts of methyl vinyl silicone rubber, 15-30 parts of phenyl siloxane rubber, 10 parts of di-iron trioxide, 30-60 parts of White Carbon black, 1.5-2.5 parts of peroxide, 5-15 parts of hydroxy silicon oil.The present invention utilize in methyl vinyl silicone rubber and with a small amount of phenyl siloxane rubber and addition heat stabilizer di-iron trioxide, significantly improve silicone rubber formulations service life when being fabricated to sealing element.The silicone rubber seal service life was increased to 35 years from 25 years, has widened the application range of usual silicone rubber formula.
Description
Technical field
The invention belongs to silicone rubber formulations fields, and in particular to a kind of silicone rubber formulations of long-life.
Background technique
Silicon rubber has excellent high and low temperature resistance, ageing properties, and when being used as sealing element, the usual service life be can achieve
20-25 or so.Certain sealing elements required on the service life reach 35 years or more then usual silicone rubber formula be difficult to meet
This is required.Dong Yinmei etc. describes a kind of long-life power cable silicone rubber formulations, purposes in CN205789224U patent
And required silicon rubber performance formula and this patent is entirely different.
This patent uses and is incorporated to a small amount of phenyl siloxane rubber in methyl vinyl silicone rubber, and is added simultaneously a certain amount of
Anti- thermit powder di-iron trioxide, through life appraisal, the silicone rubber seal service life be can reach 35 years.
Summary of the invention
Aiming at the shortcomings in the prior art, the present invention provides the silicone rubber formulations of long-life a kind of, existing ethylene methacrylic
Sealing element maximum life span made by base silicone rubber formulations is no more than 25 years, is not able to satisfy the requirement to the sealing element more high life,
The problem to be solved in the present invention is to provide a kind of long-life ethylene methacrylic silicone rubber formulations, make seal life reach 35 years with
On, to further widen methyl vinyl silicone rubber application range.
The invention is realized by the following technical scheme.
To achieve the object of the present invention, the present invention provides following technical scheme：A kind of long-life silicone rubber formulations, by following
The component of mass parts is constituted：70-85 parts of methyl vinyl silicone rubber；15-30 parts of phenyl siloxane rubber；10 parts of di-iron trioxide；It is white
30-60 parts of carbon black；1.5-2.5 parts of peroxide；5-15 parts of hydroxy silicon oil；
Preferably, the ethylene methacrylic Molecular Weight of Silicone Rubber is 50-70 ten thousand, contents of ethylene 0.07-0.12mol%.
Preferably, the phenyl siloxane rubber molecular weight is 60-100 ten thousand, phenyl content 20%-30%.
Preferably, its purity of the di-iron trioxide is not less than 99%, mesh number is not less than 80 mesh.
Preferably, the White Carbon black is gas phase of white carbon black or precipitation method White Carbon black.
Preferably, the peroxide is cumyl peroxide, 2,5- dimethyl -2,5- diperoxy benzene methyl second
Alkane, one of di-tert-butyl peroxide, benzoyl peroxide and other organic peroxide vulcanizing agents or their mixing
Body system.
Preferably, the hydroxy silicon oil is the linear polydimethysiloxane that end group is hydroxyl, hydroxy radical content 6-
12%。
The present invention has an advantageous effect in that compared with existing silicone rubber formulations：The silicone rubber seal of production has more
Long service life.
The invention discloses a kind of long-life silicone rubber formulations, using being incorporated to a small amount of benzene in methyl vinyl silicone rubber
Simultaneously a certain amount of heat stabilizer di-iron trioxide is added in base silicon rubber simultaneously.By high temperature accelerated ageing carry out life appraisal, one
As silicone rubber formulations production seal durability be 25 years, and the seal life that the present invention makes be 35 years, prolong significantly
The service life of silicone rubber seal is grown.The use scope of usual silicone rubber is widened.
Specific embodiment
A kind of silicone rubber formulations of long-life, are made of following content of component：70-85 parts of methyl vinyl silicone rubbers；
15-30 parts of phenyl siloxane rubbers；10 parts of solar heat protection oxygen agent；30-60 parts of White Carbon blacks；1.5-2.5 parts of peroxide；5-15 parts of hydroxyl silicon
Oil, the ethylene methacrylic Molecular Weight of Silicone Rubber range are 50-70 ten thousand, and contents of ethylene is 0.07 mol%-0.12mol%, wherein
The phenyl siloxane rubber molecular weight ranges are 60-100 ten thousand, phenyl content 20%-30%；Wherein the solar heat protection oxygen agent is three oxidations
Two iron（Fe2O3）, for purity not less than 99%, mesh number is not less than 80 mesh, wherein the peroxide is cumyl peroxide
（DCP）, 2,5- dimethyl -2,5- diperoxy benzene methyl ethane, di-tert-butyl peroxide, benzoyl peroxide and other have
One of machine peroxide vulcanizing agent or their mixture system, wherein the hydroxy silicon oil is the line style that end group is hydroxyl
Dimethyl silicone polymer, hydroxy radical content 6-12%.
Not doing special instruction in implementation is mass fraction.
Embodiment：It is added 2.8 Kg methyl vinyl silicone rubbers in 5L masticator, 0.5 Kg phenyl siloxane rubber, 0.35
Kg di-iron trioxide, 1Kg White Carbon black, 0.02Kg hydroxy silicon oil, then kneading 15 minutes, discharge, in 300 double roller mill
0.05 KgDCP is slowly added on machine, charging finishes, and thin 5 times logical, blanking is fabricated to O-shaped sealing element, and the sealing element is at normal temperature
Service life through Aging Assessment be 35 years.
Comparative example：3.3 Kg methyl vinyl silicone rubbers are added in 5L masticator, 1Kg White Carbon black, 0.02Kg hydroxyl
Silicone oil, then kneading 15 minutes, discharging are slowly added into 0.05 KgDCP, charging finishes, thin in 300 two-roll mill
5 times logical, blanking is fabricated to O-shaped sealing element, and the service life of the sealing element at normal temperature is 25 years through Aging Assessment.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that each fall within of the invention
Protection scope.
Claims (6)
1. a kind of silicone rubber formulations of long-life, which is characterized in that be made of following content of component：70-85 parts of ethylene methacrylics
Base silicon rubber；15-30 parts of phenyl siloxane rubbers；10 parts of solar heat protection oxygen agent；30-60 parts of White Carbon blacks；1.5-2.5 parts of peroxide；5-15
Part hydroxy silicon oil.
2. the silicone rubber formulations of long-life according to claim 1 a kind of, which is characterized in that the ethylene methacrylic silicon rubber
Molecular weight ranges are 50-70 ten thousand, and contents of ethylene is 0.07 mol%-0.12mol%.
3. the silicone rubber formulations of long-life according to claim 1 a kind of, which is characterized in that the wherein phenyl siloxane rubber
Molecular weight ranges are 60-100 ten thousand, phenyl content 20%-30%.
4. the silicone rubber formulations of long-life according to claim 1 a kind of, which is characterized in that the wherein solar heat protection oxygen agent is
Di-iron trioxide, purity are not less than 99%, and mesh number is not less than 80 mesh.
5. the silicone rubber formulations of long-life according to claim 1 a kind of, which is characterized in that wherein the peroxide is
Cumyl peroxide, 2,5- dimethyl -2,5- diperoxy benzene methyl ethane, di-tert-butyl peroxide, benzoyl peroxide first
One of acyl and other organic peroxide vulcanizing agents or their mixture system.
6. the silicone rubber formulations of long-life according to claim 1 a kind of, which is characterized in that wherein the hydroxy silicon oil is
End group is the linear polydimethysiloxane of hydroxyl, hydroxy radical content 6-12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036154.0A CN108912693A (en) | 2018-09-06 | 2018-09-06 | A kind of silicone rubber formulations of long-life |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036154.0A CN108912693A (en) | 2018-09-06 | 2018-09-06 | A kind of silicone rubber formulations of long-life |
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| CN108912693A true CN108912693A (en) | 2018-11-30 |
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| CN201811036154.0A Pending CN108912693A (en) | 2018-09-06 | 2018-09-06 | A kind of silicone rubber formulations of long-life |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705766A (en) * | 2018-12-24 | 2019-05-03 | 昆山诺泰普复合新材料有限公司 | A kind of high-performance refractory type silicon rubber self-adhesive tape and its preparation process |
Citations (7)
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|---|---|---|---|---|
| CN1746224A (en) * | 2005-09-29 | 2006-03-15 | 中蓝晨光化工研究院 | High and low temperature-resistant rubber with high damping |
| CN101481502A (en) * | 2009-02-11 | 2009-07-15 | 李东翰 | Strong toughness silastic and production method |
| CN101775215A (en) * | 2009-01-13 | 2010-07-14 | 泉州七星电气有限公司 | Silicone rubber material for ageing-resistant composite insulator and preparation method thereof |
| CN104761911A (en) * | 2015-04-03 | 2015-07-08 | 新安天玉有机硅有限公司 | High temperature mixing silicone rubber as well as preparation method and application thereof |
| CN205789224U (en) * | 2016-05-17 | 2016-12-07 | 安徽徽宁电器仪表集团有限公司 | A kind of high performance and long service life power cable |
| CN107141812A (en) * | 2017-06-06 | 2017-09-08 | 浙江恒业成有机硅有限公司 | A kind of high temperature resistant type high-temperature silicon disulfide rubber and preparation method thereof |
| CN107541069A (en) * | 2017-10-12 | 2018-01-05 | 西北橡胶塑料研究设计院有限公司 | A kind of silicone rubber seal section bar |
-
2018
- 2018-09-06 CN CN201811036154.0A patent/CN108912693A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746224A (en) * | 2005-09-29 | 2006-03-15 | 中蓝晨光化工研究院 | High and low temperature-resistant rubber with high damping |
| CN101775215A (en) * | 2009-01-13 | 2010-07-14 | 泉州七星电气有限公司 | Silicone rubber material for ageing-resistant composite insulator and preparation method thereof |
| CN101481502A (en) * | 2009-02-11 | 2009-07-15 | 李东翰 | Strong toughness silastic and production method |
| CN104761911A (en) * | 2015-04-03 | 2015-07-08 | 新安天玉有机硅有限公司 | High temperature mixing silicone rubber as well as preparation method and application thereof |
| CN205789224U (en) * | 2016-05-17 | 2016-12-07 | 安徽徽宁电器仪表集团有限公司 | A kind of high performance and long service life power cable |
| CN107141812A (en) * | 2017-06-06 | 2017-09-08 | 浙江恒业成有机硅有限公司 | A kind of high temperature resistant type high-temperature silicon disulfide rubber and preparation method thereof |
| CN107541069A (en) * | 2017-10-12 | 2018-01-05 | 西北橡胶塑料研究设计院有限公司 | A kind of silicone rubber seal section bar |
Non-Patent Citations (1)
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| 谢亦蕴: "高炉煤气蝶阀硅橡胶密封圈的研制", 《橡胶工业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705766A (en) * | 2018-12-24 | 2019-05-03 | 昆山诺泰普复合新材料有限公司 | A kind of high-performance refractory type silicon rubber self-adhesive tape and its preparation process |
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Application publication date: 20181130 |
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