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Automobile valve oil seal adhesive material

A technology of valve oil seal and rubber material, which is applied in the field of sealants, can solve the problem that the service life of valve oil seal cannot meet people's needs, and achieve excellent sealing performance and excellent heat resistance

Inactive Publication Date: 2017-09-15
成都协恒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service life of the current valve oil seal still cannot meet people's needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A rubber compound for automobile valve oil seal, made of the following raw materials in parts by weight: 25 parts of nitrile rubber, 25 parts of ethylene-propylene rubber, 15 parts of fluororubber, 10 parts of carbon black, 10 parts of high-strength fiber, and 1 part of stearic acid , 1 part of silicon dioxide, 10 parts of paraffin oil, 0.5 part of magnesium oxide, 0.5 part of zinc oxide, 0.5 part of sulfur, 0.3 part of anti-adhesive agent, 0.5 part of catalyst;

[0015] The preparation method is as follows: put the above-mentioned raw materials into a stirring reaction kettle, heat the temperature to 180-200° C. and stir thoroughly, heat for 1 hour, pour into a mold, and obtain the solid automobile oil seal compound after cooling. Nitrile rubber has excellent physical, mechanical and processing properties and excellent oil resistance. It is generally produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature ...

Embodiment 2

[0023] The difference from Example 1 is that an automobile valve oil seal compound is made of the following raw materials in parts by weight: 40 parts of nitrile rubber, 50 parts of ethylene-propylene rubber, 30 parts of fluororubber, 30 parts of carbon black, high-strength 20 parts of fiber, 4 parts of stearic acid, 3 parts of silicon dioxide, 60 parts of paraffin oil, 2 parts of magnesium oxide, 2 parts of zinc oxide, 1 part of sulfur, 0.6 parts of anti-adhesive agent, 1 part of catalyst;

[0024] The preparation method is as follows: put the above-mentioned raw materials into a stirring reaction kettle, heat the temperature to 180-200° C. and stir thoroughly, heat for 1.5 hours, pour into a mold, and obtain the solid automobile oil seal compound after cooling.

[0025] The high-strength fibers are polyacrylonitrile-based carbon fibers. Described carbon black is N539 carbon black.

Embodiment 3

[0027] Different from Examples 1 and 2, an automobile valve oil seal compound is made of the following raw materials in parts by weight: 30 parts of nitrile rubber, 30 parts of ethylene-propylene rubber, 20 parts of fluororubber, 20 parts of carbon black, 15 parts of high-strength fiber, 2 parts of stearic acid, 2 parts of silicon dioxide, 40 parts of paraffin oil, 1 part of magnesium oxide, 1 part of zinc oxide, 0.7 part of sulfur, 0.5 part of anti-adhesive agent, 0.8 part of catalyst;

[0028] The preparation method is as follows: put the above-mentioned raw materials into a stirring reaction kettle, heat up to 180-200° C. and stir thoroughly, heat for 1-1.5 hours, pour into a mold, and obtain the solid automobile oil seal compound after cooling.

[0029] The high-strength fibers are polyacrylonitrile-based carbon fibers. Described carbon black is N550 carbon black.

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PUM

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Abstract

The invention relates to a sealant, in particular to an automobile valve oil seal adhesive material, which is prepared from the following raw materials in parts by weight: 25 to 40 parts of nitrile rubber, 25 to 50 parts of ethylene propylene rubber, 15 to 30 parts of fluororubber, 10 to 30 parts of carbon black, 10 to 20 parts of high strength fiber, 1 to 4 parts of stearic acid, 1 to 3 parts of silicon dioxide, 10 to 60 parts of paraffin oil, 0.5 to 2 parts of magnesium oxide, 0.5 to 2 parts of zinc oxide, 0.5 to 1 part of sulphur, 0.3 to 0.6 part of antigum inhibitors and 0.5 to 1 part of catalysts. A preparation method comprises the following steps of putting the raw materials into a stirring reaction kettle; performing heating to raise the temperature to 180 to 200 DEG C; performing sufficient stirring; performing heating for 1 to 1.5h; then, pouring the materials into a mold; after the cooling, obtaining the solid-state automobile valve oil seal adhesive material. Compared with the existing valve oil seal adhesive product, the automobile valve oil seal adhesive material has the more excellent performance on wear-resistant performance and heat-resistant performance.

Description

technical field [0001] The invention relates to a sealant, in particular to an automobile valve oil seal compound. Background technique [0002] The valve oil seal is a kind of oil seal, which is generally vulcanized by the outer skeleton and fluorine rubber. The diameter of the oil seal is equipped with a self-tightening spring or steel wire, which is used to seal the engine valve guide rod. The valve oil seal can prevent engine oil from entering the intake and exhaust pipes, causing oil loss, preventing the mixture of gasoline and air and exhaust gas from leaking, and preventing engine oil from entering the combustion chamber. The valve oil seal is one of the important parts of the engine valve group. It is in contact with gasoline and engine oil at high temperatures, so it is necessary to use materials with excellent heat resistance and oil resistance. But the service life of present valve oil seal still can't satisfy people's demand. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L23/16C08L27/12C08L91/06C08L23/06C08K13/04C08K13/02C08K7/06C08K3/04C08K5/09C08K3/36C08K3/22C09K3/10
CPCC08L9/02C08K2003/222C08K2003/2296C08L23/16C08L2201/08C08L2205/035C08L2205/16C09K3/10C09K2003/1078C08L27/12C08L91/06C08L23/06C08K13/02C08K3/04C08K5/09C08K3/36C08K3/22C08K13/04C08K7/06
Inventor 刘承范
Owner 成都协恒科技有限公司
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