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Oil-resistant silicone rubber composite and preparation method thereof

A silicone rubber composition and oil-resistant technology, applied in the field of silicone rubber, can solve the problems of high cost, poor oil resistance and poor stability of cream rubber, and achieve the effects of improving oil resistance, improving oil resistance and reducing costs

Active Publication Date: 2015-09-23
DONGJUE SILICONE NANJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to solve the problems of poor oil resistance, poor stability and high cost of the existing cream glue, and to provide a kind of high strength, high and low temperature resistance, good oil resistance, low cost and good oil resistance. The oil-resistant silicone rubber composition of the processing technology and preparation method thereof

Method used

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  • Oil-resistant silicone rubber composite and preparation method thereof
  • Oil-resistant silicone rubber composite and preparation method thereof
  • Oil-resistant silicone rubber composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The oil-resistant silicone rubber composition, in parts by weight, consists of the following components:

[0036] 100 parts of methyl trifluoropropyl-methyl vinyl-dimethyl copolyfluorosilicone raw rubber, wherein the molar fraction of trifluoropropyl chain link in the copolyfluorosilicone raw rubber is 10%, and the molar fraction of vinyl chain link 0.15%, the viscosity-average molecular weight of the raw rubber is 550,000; 40 parts of white carbon black; 3 parts of hydroxyfluorosilicone oil; 1.5 parts of hydrogen-containing silicone oil; 10 parts of 2500 mesh wollastonite; 2.5 parts of cerium oxide; ; 10 parts of 1250 mesh mica, 0.2 parts of internal release agent zinc stearate; 2 parts of vinyl triethoxysilane.

[0037] The preparation method of the above-mentioned oil-resistant silicone rubber composition comprises the following steps:

[0038] (1) Put methyltrifluoropropyl-methylvinyl-dimethyl copolyfluorosilicone raw rubber into the kneader, add cerium oxide at on...

Embodiment 2

[0045] The oil-resistant silicone rubber composition, in parts by weight, consists of the following components:

[0046] 100 parts of methyl trifluoropropyl-methyl vinyl-dimethyl copolyfluorosilicone raw rubber, wherein the molar fraction of trifluoropropyl chain link in the copolyfluorosilicone raw rubber is 15%, and the molar fraction of vinyl chain link 0.15%, the viscosity-average molecular weight of the raw rubber is 580,000; 35 parts of white carbon black; 5 parts of hydroxyl fluorosilicone oil; 1.4 parts of hydrogen-containing silicone oil; 5 parts of 1250 mesh mica; 0.3 parts of internal release agent zinc stearate; 2 parts of vinyl triethoxysilane.

[0047] The preparation method of the above-mentioned oil-resistant silicone rubber composition comprises the following steps:

[0048] (1) Put methyltrifluoropropyl-methylvinyl-dimethyl copolyfluorosilicone raw rubber into the kneader, add cerium oxide and zinc stearate at one time, add white carbon black in 5 batches, ...

Embodiment 3

[0052] The oil-resistant silicone rubber composition, in parts by weight, consists of the following components:

[0053] 100 parts of methyl trifluoropropyl-methyl vinyl-dimethyl copolyfluorosilicone raw rubber, wherein the molar fraction of trifluoropropyl chain link in the copolyfluorosilicone raw rubber is 20%, and the molar fraction of vinyl chain link 0.14%, the viscosity-average molecular weight of the raw rubber is 580,000; 40 parts of white carbon black; 3 parts of hydroxyl fluorosilicone oil; 1.4 parts of hydrogen-containing silicone oil; 15 parts of 1250 mesh mica; 0.5 parts of internal release agent zinc stearate; 2 parts of vinyl triethoxysilane.

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Abstract

The invention discloses an oil-resistant silicone rubber composite. The components of the composite include fluorine-containing copolymer silicone rubber, hydroxy terminated fluorosilicone oil, simethicone, wollastonite and mica. Compared with the existing oil-resistant rubber, the composite has the advantages that the fluorine-containing copolymer silicone rubber and the hydroxy terminated fluorosilicone oil are adopted, the oil resistance is improved greatly, and the fine oil resistant effect is achieved; furthermore, the wollastonite and mica are adopted, the oil resistance is improved, the cost is lowered, and the market application value is provided. Compared with conventional oil-resistant rubber prepared through vinyl silicone rubber, the oil-resistant rubber prepared through fluorine-containing copolymer silicone rubber has the advantages of better oil resistance and physical properties and higher stability. The oil resistance is detected according to the GB / T1690-2006 standard, and the volume change rate is not greater than 25%.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, and in particular relates to an oil-resistant silicone rubber composition using methylvinyl silicone raw rubber (copolyfluorosilicone raw rubber) containing trifluoropropyl chain segments as the main oil-resistant raw material and its preparation method. Background technique [0002] At present, there is a wide demand for oil-resistant rubber in the market, and there are many types of oil-resistant rubber on the market, some such as nitrile, fluororubber, etc. These oil-resistant rubbers have poor high and low temperature resistance and cannot be used in high and low temperature environments. Methyl vinyl silicone rubber has excellent high and low temperature resistance, ozone resistance and other advantages, and can be widely used in aviation, cables, electronics, electrical appliances, chemicals, instruments, cement, automobiles, construction, food processing, medical equipment and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08L83/05C08L83/04C08K13/02C08K3/36C08K3/34C08K3/22C08G77/24
Inventor 徐党生
Owner DONGJUE SILICONE NANJING CO LTD
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