Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-aging silicone rubber sealing material for high-speed rail sealing element and preparation method thereof

A sealing material and sealing technology, applied in the field of high-speed rail sealing materials, can solve the problems of high compression permanent deformation rate, poor aging resistance, poor comprehensive performance, etc., and achieve low compression permanent deformation rate, good high temperature aging resistance, The effect of high temperature resistance on mechanical properties

Active Publication Date: 2020-08-14
XIANGYUSL PARTS
View PDF17 Cites 6 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-aging silicone rubber sealing material for high-speed rail sealing element and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An aging-resistant silicone rubber sealing material for high-speed iron seals, comprising the following raw materials in parts 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 parts,

[0063] Cresyl diisocyanate 0.12~0.15 parts,

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

[0065] Fumed silica 2-3 parts,

[0066] Zinc oxide 1.5~1.8 parts,

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

[0068] Heat stabilizer 2 to 4 parts,

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

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

[0071] Methyl vinyl silicone rubber 65 parts,

[0072] Fluorosilicone rubber 28 parts,

[0073] 7 parts of hydroxyl-terminated polydimethylsiloxane,

[0074] 0.8 part of silane coupling ag...

Embodiment 2

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

[0097] Methyl vinyl silicone rubber 60 parts,

[0098] Fluorosilicone rubber 25 parts,

[0099] 6 parts of hydroxyl-terminated polydimethylsiloxane,

[0100] 0.7 parts of silane coupling agent,

[0101] 0.12 parts of cresyl diisocyanate,

[0102] 3 parts of white carbon black,

[0103] Fumed silica 2 parts,

[0104] Zinc oxide 1.5 parts,

[0105] Anti-aging agent 2.5 parts,

[0106] Heat stabilizer 2 parts,

[0107] 2 parts of crosslinking 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 crosslinking agent is a mixture of sulfur and zinc methacrylate, and the crosslinking agent is a mix...

Embodiment 3

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

[0123] Methyl vinyl silicone rubber 70 parts,

[0124] Fluorosilicone rubber 30 parts,

[0125] 8 parts of hydroxyl-terminated polydimethylsiloxane,

[0126] 0.9 parts of silane coupling agent,

[0127] 0.15 part of cresyl diisocyanate,

[0128] White carbon black 5 parts,

[0129] Fumed silica 3 parts,

[0130] Zinc oxide 1.8 parts,

[0131] Anti-aging agent 4.5 parts,

[0132] Heat stabilizer 4 parts,

[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 mass ratio of the cross-linkin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an anti-aging silicone rubber sealing material for a high-speed rail sealing element. The formula comprises the following raw materials in parts by weight: 60-70 parts of methyl vinyl silicone rubber, 25-30 parts of fluorosilicone rubber, 6-8 parts of hydroxyl-terminated polydimethylsiloxane, 0.7-0.9 part of a silane coupling agent, 0.12-0.15 part of toluene diisocyanate, 3-5 parts of white carbon black, 2-3 parts of fumed silica, 1.5-1.8 parts of zinc oxide, 2.5-4.5 parts of an anti-aging agent, 2-4 parts of a heat stabilizer and 2-4 parts of a cross-linking agent. Theanti-aging silicone rubber sealing material for the high-speed rail sealing element not only has good sealing performance, but also has excellent anti-aging performance, long service life, good oil resistance and solvent resistance, and good high-temperature aging resistance; in addition, the material also has the advantages of good elasticity, low compression set rate, high temperature resistance, good mechanical properties and the like.

Description

technical field [0001] The invention relates to the technical field of high-speed rail sealing material, in particular to an aging-resistant silicone rubber sealing material for high-speed rail sealing and a preparation method thereof. Background technique [0002] Rubber is the latex taken from plants such as rubber trees and rubber grasses. After processing, it is a material with elasticity, insulation, and impermeability to water and air. High elastic polymer compound. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from rubber trees, rubber grass and other plants; synthetic rubber is obtained by polymerization of various monomers. Rubber products have unique properties, so rubber is a good raw material for making sealing rings. [0003] Rubber seals are a general basic component in sealing devices. Rubber seals are a type of rubber products widely used in sealing technology. They are widely used due to their...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com