Friction-resistant and high-shear-resistant composite rubber material containing fluorine-terminated active hydroxyl groups

A composite rubber and anti-friction technology, which is applied in the field of anti-friction materials, can solve the problems of non-discovered friction-resistant rubber and plastic materials containing fluorine-containing end groups and active hydroxyl groups, and achieve the goal of overcoming interface bonding force, improving friction performance, and improving friction 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

However, in the prior art, no reports have been found on synthetic anti-friction rubber and plastic materials containing fluorine-containing end groups and active hydroxyl groups.

Method used

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  • Friction-resistant and high-shear-resistant composite rubber material containing fluorine-terminated active hydroxyl groups
  • Friction-resistant and high-shear-resistant composite rubber material containing fluorine-terminated active hydroxyl groups
  • Friction-resistant and high-shear-resistant composite rubber material containing fluorine-terminated active hydroxyl groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0080] 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, and the viscous crude product was collected, washed with water for 5 times, removed the solvent, and dried at 110 °C for 6 h to obtain a purified 33 alkyl carbodiamide difluoro mon...

Embodiment 2

[0089] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0090] 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 Difluorinated monomer, the structural formul...

Embodiment 3

[0099] (1) Preparation and purification of dihalogenated monomers containing different soft segment lengths:

[0100] 230 g of ether-containing diamine containing 2 alkyl carbons, 100 g of triethylamine, and 20 g of Tween 80 were added to 4,500 g of deionized water in turn, and dissolved at room temperature to obtain ether-containing diamine solution; p-fluorobenzoyl chloride 317 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 difluorinated monomer, the structural f...

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Abstract

The invention relates to a friction-resistant and high-shear-resistant composite rubber material containing fluorine-containing terminal active hydroxyl groups, which belongs to the field of friction-resistant materials. The invention provides a friction-resistant high-shear-resistant composite rubber material, the raw materials of which include: 0.1-10 parts by weight of a fluorine-containing terminal active hydroxyl friction-resistant active surface modified resin, 50-90 parts by weight of semi-vulcanized rubber; the fluorine-containing terminal The structural formula of the radical active hydroxyl anti-friction active surface modification resin is shown in formula I, wherein, 0<m≤200, 0<n≤200, M is perfluorohexylsulfonyl, perfluorohexyl, perfluorohexylsulfonyl , perfluorooctylsulfonyl or perfluorooctanoyl. The invention prepares the semi-aromatic polyether amide with high-performance fluorine-containing end groups and active hydroxyl graft groups, and uses its excellent comprehensive performance to coat and compound the semi-aromatic polyetheramide with traditional rubber to improve the friction performance of rubber seals.

Description

technical field [0001] The invention relates to a friction-resistant and high-shear-resistant composite rubber material containing a fluorine end-group active hydroxyl group, belonging to the field of friction-resistant materials. Background technique [0002] For dynamic 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. Compared with rubber, plastic generally has a lower coefficient of friction, better barrier properties, and higher strength and hardness. During the friction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/48C08L21/00
CPCC08J7/0427C08J7/123C08G65/4031C08G65/485C08J2471/12C08J2321/00
Inventor 张刚文言泽李洪春李东升雷征黄骁严光明杨杰严永刚
Owner SICHUAN UNIV
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