CN113004695A - Silicon rubber composition - Google Patents
Silicon rubber composition Download PDFInfo
- Publication number
- CN113004695A CN113004695A CN202110240661.1A CN202110240661A CN113004695A CN 113004695 A CN113004695 A CN 113004695A CN 202110240661 A CN202110240661 A CN 202110240661A CN 113004695 A CN113004695 A CN 113004695A
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- Prior art keywords
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- rubber composition
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- silicon rubber
- linking agent
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Classifications
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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
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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four 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 present invention relates to a silicone rubber composition. The composite organic polysiloxane silicon rubber material comprises organic polysiloxane, a cross-linking agent, composite particle fillers and a microcapsule catalyst, wherein the composite organic polysiloxane, particularly added titanium oxide particles are adopted, so that the heat resistance, the cold resistance, the dielectricity, the ozone resistance, the atmospheric aging resistance and other properties of the silicon rubber are effectively improved, the composite particle fillers are selected to realize good dispersibility and compatibility in a silicon rubber matrix without further modification, the hydrophobicity, the mechanical property and the thermal stability of the silicon rubber are improved, and the added microcapsule catalyst with resin particles is excellent in cross-linking reactivity of the whole material.
Description
Technical Field
The invention relates to the technical field of silicone rubber compositions, in particular to a silicone rubber composition.
Background
Silicone rubber products are used in a variety of high temperature environments due to their excellent heat resistance. In recent years, silicone rubber products are used in microwave ovens, the interior of heating furnaces, engine rooms of automobiles, and the like, in which high heat resistance in higher temperature environments such as temperatures exceeding, for example, 200 ℃ is required. In addition, conventionally, as a fire resistant material for buildings, a molded product of a rubber material such as a chloroprene-based rubber or an ethylene-propylene-diene-based rubber has been used, but these rubber materials have not been able to meet the increasing requirements of the rubber material such as weather resistance, creep resistance, and prevention of generation of harmful gas during combustion as the number of years of life of buildings increases. Therefore, in recent years, as a fire resistant material for construction, a fire resistant material made of silicone rubber excellent in heat resistance, weather resistance and creep resistance has also been used. Silicone rubber materials are widely used for their excellent properties.
Disclosure of Invention
In view of the problems in the prior art, the invention discloses a silicon rubber composition, which adopts the technical scheme that the silicon rubber composition comprises the following components in parts by weight: 100 parts of organopolysiloxane, 0.1-3 parts of cross-linking agent, 30-60 parts of composite particle filler and 10-30 parts of microcapsule catalyst, wherein the organopolysiloxane is prepared by mixing organopolysiloxane mixed with titanium oxide particles and organosiloxane containing chain dilute groups in a weight ratio of 1: 0.5-1: 1; the microcapsule catalyst is composed of resin fine particles.
In a preferred embodiment of the present invention, the weight ratio of the titanium oxide particles in the organopolysiloxane mixed with titanium oxide particles is 5% to 20%.
In a preferred embodiment of the present invention, the crosslinking agent is composed of an alkyl crosslinking agent and a silicone crosslinking agent.
In a preferred embodiment of the present invention, the composite particulate filler is a silica polymer having an organic-inorganic composite structure.
In a preferred embodiment of the present invention, the resin fine particles are obtained by mixing an epoxy resin and a polyvinyl butyral resin in a weight ratio of 1:0.6 to 1: 1.
The invention has the beneficial effects that: according to the invention, the composite organic polysiloxane is adopted, particularly after titanium oxide particles are added, the performances of the silicone rubber, such as heat resistance, cold resistance, dielectricity, ozone resistance, atmospheric aging resistance and the like, are effectively improved, the composite granular filler is selected to realize good dispersibility and compatibility in a silicone rubber matrix without further modification, the hydrophobicity, the mechanical property and the thermal stability of the silicone rubber are improved, and the added microcapsule catalyst with resin particles is used for ensuring that the crosslinking reactivity of the whole material is excellent.
Detailed Description
Example 1
The invention relates to a silicon rubber composition, which adopts the technical scheme that the silicon rubber composition comprises the following components in parts by weight: 100 parts of organopolysiloxane, 0.1 part of cross-linking agent, 30 parts of composite particle filler and 10 parts of microcapsule catalyst, wherein the organopolysiloxane is prepared by mixing organopolysiloxane mixed with titanium oxide particles and organic siloxane containing chain dilute groups in a weight ratio of 1: 0.5; the microcapsule catalyst is composed of resin fine particles.
The weight ratio of the titanium oxide particles in the organopolysiloxane mixed with titanium oxide particles is 5%.
The cross-linking agent consists of alkyl cross-linking agent and organosilicon cross-linking agent.
The composite particle filler is a silicon dioxide polymer with an organic-inorganic composite structure.
The resin particles are obtained by mixing an epoxy resin and a polyvinyl butyral resin in a weight ratio of 1: 0.6.
Example 2
The invention relates to a silicon rubber composition, which adopts the technical scheme that the silicon rubber composition comprises the following components in parts by weight: 100 parts of organopolysiloxane, 3 parts of cross-linking agent, 60 parts of composite particle filler and 30 parts of microcapsule catalyst, wherein the organopolysiloxane is prepared by mixing organopolysiloxane mixed with titanium oxide particles and organosiloxane containing chain dilute groups in a weight ratio of 1: 1; the microcapsule catalyst is composed of resin fine particles.
The weight ratio of the titanium oxide particles in the organopolysiloxane mixed with titanium oxide particles is 20%.
The cross-linking agent consists of alkyl cross-linking agent and organosilicon cross-linking agent.
The composite particle filler is a silicon dioxide polymer with an organic-inorganic composite structure.
The resin particles are obtained by mixing an epoxy resin and a polyvinyl butyral resin in a weight ratio of 1: 1.
Example 3
The invention relates to a silicon rubber composition, which adopts the technical scheme that the silicon rubber composition comprises the following components in parts by weight: 100 parts of organopolysiloxane, 2 parts of cross-linking agent, 45 parts of composite particle filler and 20 parts of microcapsule catalyst, wherein the organopolysiloxane is prepared by mixing organopolysiloxane mixed with titanium oxide particles and organic siloxane containing chain dilute groups in a weight ratio of 1: 0.8; the microcapsule catalyst is composed of resin fine particles.
The weight ratio of the titanium oxide particles in the organopolysiloxane mixed with titanium oxide particles is preferably 10%.
The cross-linking agent consists of alkyl cross-linking agent and organosilicon cross-linking agent.
The composite particle filler is a silicon dioxide polymer with an organic-inorganic composite structure.
The resin particles are obtained by mixing an epoxy resin and a polyvinyl butyral resin in a weight ratio of 1: 0.8.
Parts not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (5)
1. The silicon rubber composition is characterized by comprising the following components in parts by weight: 100 parts of organopolysiloxane, 0.1-3 parts of cross-linking agent, 30-60 parts of composite particle filler and 10-30 parts of microcapsule catalyst, wherein the organopolysiloxane is prepared by mixing organopolysiloxane mixed with titanium oxide particles and organosiloxane containing chain dilute groups in a weight ratio of 1: 0.5-1: 1; the microcapsule catalyst is composed of resin fine particles.
2. The silicone rubber composition according to claim 1, wherein: the weight ratio of the titanium oxide particles in the organopolysiloxane mixed with titanium oxide particles is 5-20%.
3. The silicone rubber composition according to claim 1, wherein: the cross-linking agent consists of alkyl cross-linking agent and organosilicon cross-linking agent.
4. The silicone rubber composition according to claim 1, wherein: the composite particle filler is a silicon dioxide polymer with an organic-inorganic composite structure.
5. The silicone rubber composition according to claim 1, wherein: the resin particles are obtained by mixing an epoxy resin and a polyvinyl butyral resin in a weight ratio of 1: 0.6-1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240661.1A CN113004695A (en) | 2021-03-04 | 2021-03-04 | Silicon rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240661.1A CN113004695A (en) | 2021-03-04 | 2021-03-04 | Silicon rubber composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113004695A true CN113004695A (en) | 2021-06-22 |
Family
ID=76405380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110240661.1A Pending CN113004695A (en) | 2021-03-04 | 2021-03-04 | Silicon rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113004695A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170073518A1 (en) * | 2014-09-29 | 2017-03-16 | Sumitomo Riko Company Limited | Silicone rubber composition and silicone rubber cross-linked body, and integrally molded body and method for producing integrally molded body |
| CN110903653A (en) * | 2018-09-14 | 2020-03-24 | 浙江清华柔性电子技术研究院 | Silicone rubber composition, silicone rubber and preparation method thereof |
-
2021
- 2021-03-04 CN CN202110240661.1A patent/CN113004695A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170073518A1 (en) * | 2014-09-29 | 2017-03-16 | Sumitomo Riko Company Limited | Silicone rubber composition and silicone rubber cross-linked body, and integrally molded body and method for producing integrally molded body |
| CN107849353A (en) * | 2014-09-29 | 2018-03-27 | 住友理工株式会社 | Rubber composition and silicone rubber crosslinking body and the manufacture method of integrally formed body and integrally formed body |
| CN110903653A (en) * | 2018-09-14 | 2020-03-24 | 浙江清华柔性电子技术研究院 | Silicone rubber composition, silicone rubber and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张德龢: "《高分子化学工业译丛 第6集 合成橡胶专集》", 30 June 1966 * |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |