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Friction-resistant and high-shear composite rubber sealing material

A compound rubber and sealing material technology, applied in the field of friction-resistant materials, can solve the problems such as reports of friction-resistant and high-shear-resistant compound rubber sealing materials that have not been found, and achieve overcoming interface bonding force, low friction coefficient and wear and tear, and excellent friction resistance. performance effect

Active Publication Date: 2022-06-07
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no relevant report on synthetic friction-resistant high-shear composite rubber sealing materials in the prior art.

Method used

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  • Friction-resistant and high-shear composite rubber sealing material
  • Friction-resistant and high-shear composite rubber sealing material
  • Friction-resistant and high-shear composite rubber sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0073] Add 2000 g of ether-containing diamine containing 33 alkyl carbons, 80 g of sodium hydroxide, and 3 g of sodium dodecyl benzene sulfonate to 5,000 g of deionized water in turn, and dissolve at room temperature to obtain ether-containing diamine solution; 317g of fluorobenzoyl chloride and 5000g of dichloromethane were mixed evenly and added to the container, and then the ether-containing diamine solution prepared above was added dropwise into the container. After the diamine solution was added dropwise, the reaction was continued at room temperature for 5h , to generate 33 alkylcarbodiamide difluorinated monomers; the organic solvent in the above monomers was distilled and recovered, the viscous crude product was collected, washed with water 4 times, removed the solvent, and dried at 110 °C for 6 h to obtain a purified 33 alkylcarbodiamide difluoro monomers, th...

Embodiment 2

[0083] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0084] Add 400 g of ether-containing diamine containing 5 alkyl carbons, 90 g of lithium hydroxide, and 10 g of PEG-1000 to 4000 g of deionized water successively, and dissolve at room temperature to obtain ether-containing diamine solution; 317 g of p-fluorobenzoyl chloride Mix it with 4000g of chloroform and add it to the container, then add the ether-containing diamine solution prepared above dropwise into the container. After the diamine solution is added dropwise, continue to react at room temperature for 3h to generate 5 alkyl groups. Carbodiamide difluorinated monomer; the organic solvent in the above monomer is recovered by distillation, the viscous crude product is collected, washed with water for 4 times, the solvent is removed, and dried at 100°C for 24h to obtain a purified carbodiamide containing 5 alkyl groups Difluoro monomer, the structural formula is ...

Embodiment 3

[0094] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0095] 230 g of ether-containing diamine containing 2 alkyl carbons, 100 g of triethylamine, and 20 g of Tween 80 were successively added to 4,500 g of deionized water, and dissolved at room temperature to obtain ether-containing diamine solution; p-chlorobenzoyl chloride 348 g Mix it with 3500g of chlorobenzene and add it to the container. Then add the ether-containing diamine solution prepared above dropwise into the container. After the diamine solution is added dropwise, continue to react for 5h at room temperature to generate 2 alkanes. carbodiamide dihalogenated monomer; the organic solvent in the above monomer is recovered by distillation, the viscous crude product is collected, washed with water for 4 times, the solvent is removed, and dried at 100°C for 12h to obtain a purified product containing 2 alkyl carbodiamides. Amide dichlorinated monomer, the structu...

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Abstract

The invention relates to a friction-resistant and high-shear-resistant composite rubber sealing material, which belongs to the field of friction-resistant materials. The invention provides a friction-resistant and high-shear-resistant composite rubber sealing material. The raw materials include: 0.1-10 parts by weight of a friction-resistant active surface-modified resin, 50-90 parts by weight of semi-vulcanized rubber; the structural formula of the friction-resistant active surface-modified resin As shown in formula I, wherein, 0<m≤200, 0<n≤200. The present invention introduces soft segments of different carbon chain lengths containing polyether amine into the molecular main chain of semi-aromatic polyamide plastics, thereby endowing traditional semi-aromatic polyether amide with excellent flexibility and stress deformation while maintaining excellent friction performance. Restoration: The present invention introduces active carboxyl groups into the main chain of polymer molecules through copolymerization, and greatly improves the interfacial bonding force between materials and rubber products through the effects of intermolecular hydrogen bonds and van der Waals forces, thereby overcoming traditional rubber-plastic composite materials. The problem of poor interface bonding force and shear resistance.

Description

technical field [0001] The invention relates to a friction-resistant and high-shear-resistant composite rubber sealing material, which belongs to the field of friction-resistant materials. Background technique [0002] For moving seals, friction is an important factor related to moving mass. And sealing and friction always restrict each other. Generally speaking, improving the sealing performance will bring about an increase in the friction force, which directly leads to a decrease in the movement ability and quality; and the friction force will accelerate the wear of the seal. [0003] At present, most of the general engine seals use ethylene-propylene rubber or nitrile rubber, etc., but as a kind of seal material, its friction performance still needs to be further improved; Excellent barrier properties and higher strength and hardness, during the friction process, due to the higher hardness of the plastic, the abrasive particles of the plastic wear less. In order to imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/046C08J7/12C09D181/06C09D171/10C08G75/23C08G65/40C08G65/48C08L21/00
CPCC08J7/046C08J7/123C09D181/06C09D171/00C08G75/23C08G65/4012C08G65/4006C08G65/48C08J2321/00C08J2481/06C08J2471/00
Inventor 张刚邓萧李洪春李东升雷征毛其泽严光明杨杰严永刚
Owner SICHUAN UNIV
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