Oil-resistant silicone rubber compound and preparation method thereof

A technology of silicone rubber and mixed rubber, which is applied in the field of silicone rubber, can solve the problems of obvious swelling, poor oil resistance and solvent resistance, and limit applications, and achieve the effect of improving oil resistance, ensuring oil resistance, and reducing volume change.

Inactive Publication Date: 2019-03-15
镇江亿维硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone rubber has poor oil and solvent resistance and obvious swelling phenomenon, which limits its application in more industrial fields.

Method used

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  • Oil-resistant silicone rubber compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An oil-resistant silicone rubber compound, the raw materials of which include: 100 parts by mass of methyl vinyl silicone rubber, 3 parts by mass of fluorine-containing silicone oil, 45 parts by mass of polytetrafluoroethylene, 20 parts by mass of diatomaceous earth, 75 parts by mass of white carbon black Parts by mass, 2 parts by mass of vinyltriethoxysilane as a coupling agent, 10 parts by mass of hydroxyl silicone oil JS-209J as a structure treatment agent, and 1 part by mass of heat-resistant agent iron oxide-coated titanium oxide.

[0028] Prepared by:

[0029] (1) Add methyl vinyl silicone rubber, fluorine-containing silicone oil, and silane coupling agent into the kneader in proportion to knead for 10-20 minutes;

[0030] (2) Add white carbon black, polytetrafluoroethylene, structure treatment agent and diatomaceous earth in 3 times, fully knead after each addition, and obtain silicone rubber compound;

[0031] (3) Heat up the silicone rubber compound to 140°C, ...

Embodiment 2

[0034] An oil-resistant silicone rubber compound, the raw materials of which include: 100 parts by mass of methyl vinyl silicone rubber, 5 parts by mass of fluorine-containing silicone oil, 30 parts by mass of polytetrafluoroethylene, 30 parts by mass of diatomite, and 40 parts by mass of white carbon black parts by mass, 5 parts by mass of coupling agent vinyltriethoxysilane, 5 parts by mass of hydroxy silicone oil JS-209J as a structure treatment agent, and 3 parts by mass of heat-resistant agent iron oxide-coated titanium oxide.

[0035] Prepared by:

[0036] (1) Add methyl vinyl silicone rubber, fluorine-containing silicone oil and silane coupling agent into the kneader in proportion and knead for 20 minutes;

[0037] (2) Add white carbon black, polytetrafluoroethylene, structure treatment agent and diatomaceous earth in 4 times, fully knead after each addition, and obtain a silicone rubber compound;

[0038] (3) Heat up the silicone rubber mix to 160°C, knead evenly in v...

Embodiment 3

[0041] An oil-resistant silicone rubber compound, the raw materials of which include: 100 parts by mass of methyl vinyl silicone rubber, 10 parts by mass of fluorine-containing silicone oil, 30 parts by mass of polytetrafluoroethylene, 10 parts by mass of diatomaceous earth, 60 parts by mass of white carbon black parts by mass, 8 parts by mass of coupling agent vinyltriethoxysilane, 20 parts by mass of hydroxy silicone oil JS-209J as a structure treatment agent, and 5 parts by mass of heat-resistant agent iron oxide-coated titanium oxide.

[0042] Prepared by:

[0043] (1) Add methyl vinyl silicone rubber, fluorine-containing silicone oil and silane coupling agent into the kneader in proportion and knead for 20 minutes;

[0044] (2) Add white carbon black, polytetrafluoroethylene, structure treatment agent and diatomaceous earth in 4 times, fully knead after each addition, and obtain a silicone rubber compound;

[0045] (3) Heat up the silicone rubber mix to 150°C, knead even...

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Abstract

The invention discloses an oil-resistant silicone rubber compound. The oil-resistant silicone rubber compound is prepared from the following raw materials in parts by mass: 100 parts of methyl vinyl silicone rubber, 3-10 parts of fluorine-containing silicone oil, 30-50 parts of polytetrafluoroethylene, 10-30 parts of diatomite, 40-75 parts of white carbon black, 2-8 pars of a coupling agent, 5-20parts of a structural treatment agent and 1-5 parts of a heat resistant agent. The rubber compound is prepared by mixing methyl vinyl silicone rubber, fluorine-containing silicone oil, polytetrafluoroethylene, diatomite and the like as a matrix. By introducing fluorine in the silicone oil to a methyl vinyl silicone rubber chain segment, the oil resistant effect is improved. The volume change of the silicone rubber soaked in engine oil is reduced by blending porous filler such as polytetrafluoroethylene and diatomite. The heat resistant agent repairs damage of the engine oil to main chains of the silicone rubber in the soaking process of the silicone rubber in the engine oil, so that the oil resistance of the silicone rubber is guaranteed. The invention also discloses a preparation method of the oil-resistant silicone rubber compound.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, and in particular relates to an oil-resistant silicone rubber compound and a preparation method thereof. Background technique [0002] Silicone rubber has high and low temperature resistance, ultraviolet resistance, radiation resistance, weather resistance, electrical insulation, water repellency, flame retardant, high air permeability, physiological inertia, etc. It has been widely used in medical and health care, daily necessities, etc., and has become an important and indispensable new polymer material in the national economy. Some rubber products have to be in contact with various oils for a long time during use. At this time, the oil can penetrate into the rubber and reduce the performance of the rubber. Therefore, it is meaningful to study the oil resistance of rubber. However, silicone rubber has poor oil and solvent resistance and obvious swelling phenomenon, which limits its app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/08C08L83/04C08L27/18C08K13/06C08K7/26C08K3/36C08K9/10C08K3/22
CPCC08K2003/2237C08K2201/011C08L83/04C08L2205/02C08L2205/025C08L2205/035C08L83/08C08L27/18C08K13/06C08K7/26C08K3/36C08K9/10C08K3/22
Inventor 姚恒玺郭连安
Owner 镇江亿维硅材料科技有限公司
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