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A kind of anti-aging silicone rubber sealing material for high-speed rail seal and preparation method thereof

A technology of sealing materials and silicone rubber, which is applied in the field of aging-resistant silicone rubber sealing materials for high-speed rail seals and its preparation, can solve the problems of poor aging resistance, high compression permanent deformation rate, poor comprehensive performance, etc., and achieve high temperature aging resistance Good performance, low compression set rate, high temperature resistant mechanical properties

Active Publication Date: 2022-08-02
XIANGYUSL PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The sealing performance is poor, the aging resistance is poor, and it is difficult to achieve both good sealing performance and aging resistance. It is easy to cause poor sealing due to corrosion and aging, and then material waste, mechanical equipment corrosion and other problems, causing major safety issues Hidden dangers, even accidents, cannot meet the performance requirements of high-speed rail seals and other fields;
[0006] 2. Poor elasticity, high compression set rate, poor high temperature resistance and mechanical properties, poor comprehensive performance

Method used

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  • A kind of anti-aging silicone rubber sealing material for high-speed rail seal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An aging-resistant silicone rubber sealing material for high-speed rail seals, comprising the following raw materials by weight:

[0059] 60-70 parts of methyl vinyl silicone rubber,

[0060] Fluorosilicone rubber 25~30 parts,

[0061] 6-8 parts of hydroxyl-terminated polydimethylsiloxane,

[0062] Silane coupling agent 0.7~0.9 part,

[0063] 0.12-0.15 part of tolyl diisocyanate,

[0064] 3 to 5 parts of white carbon black,

[0065] 2 to 3 parts of fumed silica,

[0066] 1.5~1.8 parts of zinc oxide,

[0067] Anti-aging agent 2.5~4.5 parts,

[0068] Heat stabilizer 2 to 4 parts,

[0069] 2 to 4 parts of cross-linking agent.

[0070] Preferably, the aging-resistant silicone rubber sealing material for high-speed rail seals includes the following raw materials by weight:

[0071] 65 parts of methyl vinyl silicone rubber,

[0072] 28 parts of fluorosilicone rubber,

[0073] 7 parts of hydroxyl terminated polydimethylsiloxane,

[0074] 0.8 part of silane coupling...

Embodiment 2

[0096] An aging-resistant silicone rubber sealing material for high-speed rail seals, comprising the following raw materials by weight:

[0097] 60 parts of methyl vinyl silicone rubber,

[0098] 25 parts of fluorosilicone rubber,

[0099] 6 parts of hydroxyl terminated polydimethylsiloxane,

[0100] 0.7 part of silane coupling agent,

[0101] 0.12 part of tolyl diisocyanate,

[0102] 3 parts of white carbon black,

[0103] 2 parts of fumed silica,

[0104] 1.5 parts of zinc oxide,

[0105] Anti-aging agent 2.5 parts,

[0106] 2 parts of heat stabilizer,

[0107] 2 parts of cross-linking agent.

[0108] In this embodiment, the fluorosilicone rubber is FVMQ fluorosilicone rubber.

[0109] In this embodiment, the silane coupling agent is KH570.

[0110] In this embodiment, the crosslinking agent is a mixture of sulfur and zinc methacrylate.

[0111] In this embodiment, the cross-linking agent is a mixture of sulfur and zinc methacrylate, and the cross-linking agent is...

Embodiment 3

[0122] An aging-resistant silicone rubber sealing material for high-speed rail seals, comprising the following raw materials by weight:

[0123] 70 parts of methyl vinyl silicone rubber,

[0124] 30 parts of fluorosilicone rubber,

[0125] 8 parts of hydroxyl terminated polydimethylsiloxane,

[0126] 0.9 part of silane coupling agent,

[0127] 0.15 part of tolyl diisocyanate,

[0128] 5 parts of white carbon black,

[0129] 3 parts of fumed silica,

[0130] 1.8 parts of zinc oxide,

[0131] Anti-aging agent 4.5 parts,

[0132] 4 parts of heat stabilizer,

[0133] 4 parts of cross-linking agent.

[0134] In this embodiment, the fluorosilicone rubber is FVMQ fluorosilicone rubber.

[0135] In this embodiment, the silane coupling agent is KH570.

[0136]In this embodiment, the crosslinking agent is a mixture of sulfur and zinc methacrylate.

[0137] In this embodiment, the cross-linking agent is a mixture of sulfur and zinc methacrylate, and the cross-linking agent is ...

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PUM

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Abstract

The invention discloses an aging-resistant silicone rubber sealing material for high-speed rail sealing parts. 6-8 parts of oxane, 0.7-0.9 parts of silane coupling agent, 0.12-0.15 parts of tolyl diisocyanate, 3-5 parts of silica, 2-3 parts of fumed silica, 1.5-1.8 parts of zinc oxide , 2.5 to 4.5 parts of anti-aging agent, 2 to 4 parts of heat stabilizer, and 2 to 4 parts of crosslinking agent. The aging-resistant silicone rubber sealing material for high-speed rail seals of the present invention not only has good sealing performance, but also has excellent aging resistance, long service life, good oil and solvent resistance, and high temperature aging resistance; Good elasticity, low compression set, high temperature resistance and good mechanical properties.

Description

technical field [0001] The invention relates to the technical field of high-speed rail seal materials, in particular to an aging-resistant silicone rubber sealing material for high-speed rail seals and a preparation method thereof. Background technique [0002] Rubber is the latex obtained from rubber trees, rubber grass and other plants. High elastic polymer compound. Divided into natural rubber and synthetic rubber. Natural rubber is made by extracting colloid from rubber trees, rubber grass and other plants after processing; synthetic rubber is obtained by polymerization of various monomers. Because of its unique properties, rubber products are a better raw material for making sealing rings. [0003] Rubber seals are a kind of general basic element in sealing devices. Rubber seals are a type of rubber products widely used in sealing technology. They are widely used because of their small elastic modulus, high elongation, and air permeability. For installation on vario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/08C08L83/04C08K13/04C08K7/26C08K3/22C08K5/5419C08K5/18C08K5/09C08K5/29C08K3/06C08K5/098
CPCC08L83/04C08L2201/08C08L2205/025C08L2205/03C08K2003/2296C08K2201/014C08K2201/011C08L2312/00C08L83/08C08K13/04C08K7/26C08K3/22C08K5/5419C08K5/18C08K5/09C08K5/29C08K3/06C08K5/098
Inventor 谢云州
Owner XIANGYUSL PARTS
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