Heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member and preparation method thereof

A rubber seal, ozone-resistant technology, applied in the field of seals, can solve the problems of low permanent compression deformation resistance, failure to meet the use requirements, poor ozone resistance, etc., to improve comprehensive physical properties, improve scorch time, vulcanization high degree of effect

Inactive Publication Date: 2020-02-11
宁波泰意德过滤技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The safety of automobiles is closely related to every household. The application of each component should meet the requirements of use under different harsh conditions. Seals made of rubber materials can be used as seals for the pump port of automobile fuel tanks, but the nitrile in the prior art Rubber seals have poor ozone resistance and low permanent compression deformation resistance. At the same time, when in a severe cold environment, the existing nitrile rubber seals have poor low temperature resistance. In addition, in long-term sour gasoline and high temperature environments use, its performance is poor and cannot meet the requirements of use under harsh conditions

Method used

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  • Heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A heat-resistant, ozone-resistant and pressure-resistant rubber seal, the rubber seal is composed of the following raw materials in parts by weight:

[0044] 60 parts by weight of modified EPDM rubber;

[0045] 100 parts by weight of fluorosilicone rubber;

[0046] 45 parts by weight of polyvinylidene fluoride resin;

[0047] 7 parts by weight of vulcanizing agent;

[0048] Accelerator 0.4 parts by weight;

[0049] Active agent 1.5 parts by weight;

[0050] 4 parts by weight of inorganic filler;

[0051] Additive 2 parts by weight.

[0052] The Mooney viscosity range of the EPDM rubber is 40.

[0053] The modified EPDM rubber is cage-type silsesquioxane modified EPDM rubber.

[0054] The cage silsesquioxane is octavinyl cage silsesquioxane.

[0055] The vulcanizing agent is composed of platinum vulcanizing agent, N,N'-m-phenylene bismaleimide and bis(trimethylsilyl) peroxide with a mass ratio of 1:0.6:1.5.

[0056] The accelerator is composed of tetramethylthiura...

Embodiment 2

[0066] A heat-resistant, ozone-resistant and pressure-resistant rubber seal, the rubber seal is composed of the following raw materials in parts by weight:

[0067] Modified EPDM rubber 50 parts by weight;

[0068] Fluorosilicone rubber 80 parts by weight;

[0069] 30 parts by weight of polyvinylidene fluoride resin;

[0070] 5 parts by weight of vulcanizing agent;

[0071] Accelerator 0.2 parts by weight;

[0072] Active agent 0.5 parts by weight;

[0073] 3 parts by weight of inorganic filler;

[0074] Additive 1 part by weight.

[0075] The Mooney viscosity range of the EPDM rubber is 35.

[0076] The modified EPDM rubber is cage-type silsesquioxane modified EPDM rubber.

[0077] The cage silsesquioxane is octavinyl cage silsesquioxane.

[0078] The vulcanizing agent is composed of platinum vulcanizing agent, N,N'-m-phenylene bismaleimide and bis(trimethylsilyl) peroxide in a mass ratio of 1:0.5:1.

[0079] The accelerator is composed of tetramethylthiuram disulfid...

Embodiment 3

[0089] A heat-resistant, ozone-resistant and pressure-resistant rubber seal, the rubber seal is composed of the following raw materials in parts by weight:

[0090] Modified EPDM rubber 80 parts by weight;

[0091] Fluorosilicone rubber 120 parts by weight;

[0092] 60 parts by weight of polyvinylidene fluoride resin;

[0093] 10 parts by weight of vulcanizing agent;

[0094] Accelerator 0.5 parts by weight;

[0095] Activator 2.5 parts by weight;

[0096] 5 parts by weight of inorganic filler;

[0097] Additive 3 parts by weight.

[0098] The Mooney viscosity range of the EPDM rubber is 45.

[0099] The modified EPDM rubber is cage-type silsesquioxane modified EPDM rubber.

[0100] The cage silsesquioxane is octavinyl cage silsesquioxane.

[0101] The vulcanizing agent is composed of platinum vulcanizing agent, N, N'-m-phenylene bismaleimide and bis(trimethylsilyl) peroxide with a mass ratio of 1:0.8:2.

[0102] The accelerator is composed of tetramethylthiuram disul...

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Abstract

The invention discloses a heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member, which comprises the following raw materials by weight: 50-80 parts of modified ethylene propylene diene monomer, 80-120 parts of a fluorosilicone rubber, 30-60 parts of a polyvinylidene fluoride resin, 5-10 parts of a vulcanizing agent, 0.2-0.5 part of an accelerant, 0.5-2.5 parts of an active agent, 3-5 parts of an inorganic filler, and 1-3 parts of an additive. According to the invention, the heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member has advantages of good heat resistance, good ozone resistance, small permanent compression deformation and good machinability, and can satisfy the use occasions under severe conditions. The invention furtherdiscloses a preparation method of the heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member, wherein the vulcanization speed is high in the preparation process, the scorching time is long, and the production process is safe.

Description

technical field [0001] The invention relates to the technical field of seals, in particular to a heat-resistant, ozone-resistant, pressure-resistant rubber seal and a preparation method thereof. Background technique [0002] Along with the improvement day by day of people's living standard, more and more cars come into common people's family, no matter severe cold or hot summer, the figure of car driving is all arranged in the streets and alleys. The safety of automobiles is closely related to every household. The application of each component should meet the requirements of use under different severe conditions. Seals made of rubber materials can be used as seals for the pump port of automobile fuel tanks, but the nitrile in the prior art Rubber seals have poor ozone resistance and low permanent compression deformation resistance. At the same time, when in a severe cold environment, the existing nitrile rubber seals have poor low temperature resistance. In addition, in long...

Claims

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Application Information

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IPC IPC(8): C08L83/08C08L27/16C08L23/26C08L83/12C08K13/04C08K13/02C08K3/22C08K5/3415C08K5/5419C08K5/10C08K7/26C08K3/04
CPCC08K2003/2213C08K2003/2296C08L83/08C08L2201/08C08L2205/02C08L2205/035C08L27/16C08L23/26C08L83/12C08K13/04C08K3/22C08K5/3415C08K5/5419C08K5/10C08K7/26C08K13/02C08K3/04C08K3/042
Inventor 赵金燕
Owner 宁波泰意德过滤技术有限公司
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