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Friction-reducing and abrasive composite materials with reactive nanometer inorganic particles/epoxy and production thereof

A technology of nano-inorganic particles and epoxy resin, applied in the chemical field, can solve the problems of establishing chemical connections and unsatisfactory wear resistance, and achieve the effect of simple preparation method, easy implementation, and improved friction and wear performance

Inactive Publication Date: 2006-08-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, the usual coupling agent treatment or particle surface grafting does not establish a chemical connection between the particle and the polymer matrix, but only a physical effect, so the wear resistance is not very ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Soap-free emulsion method: Weigh the dried coupling agent γ-methacryltrimethoxysilane to treat the nanoparticles in a 250mL three-necked bottle, the weight of γ-methacryltrimethoxysilane is 10% of the nanoparticle %, add 70ml of ammonia water (containing 0.4% isobutanol as a dispersant) with a pH of 7 to 8, and ultrasonically disperse for 60 minutes. Move the reaction bottle to an oil bath, pass in argon gas, stir magnetically at a constant speed at room temperature for 3 hours, raise the temperature to 70°C, and add initiator K after constant temperature 2 S 2 o 8 (K 2 S 2 o 8 The concentration in the reaction system is 0.005mol / L), and after 35 minutes, monomers are added dropwise to carry out graft polymerization. After reacting for 10 h, the reaction product was obtained by filtration. The weight ratio of each substance in the reaction system is: monomer / nano particle / solvent=(2-4) / 10 / 100. The obtained graft-modified nanoparticles and the remaining monomers w...

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PUM

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Abstract

A reactive nanometer inorganic particle / epoxy resin abrasive composite material and its production are disclosed. The composite material consists of epoxy resin 90-99wt%, nanometer inorganic particle 1-10wt% and graft monomer 0.1-5%. The graft monomer is mixture of any kind or several kinds of methyl acrylic acid ethylene oxide ester, acrylic amide, phenylethylene, ethyl acrylate, methyl ethyl acrylate or butyl acrylate. The process is carried out by surface graft modifying nanometer grains, inducing reactive polymer, epoxy resin curing reacting and forming chemical connection between nanometer grains and resin matrix. It has better anti-friction and wear-resistant performances and is simple. It can be used for epoxy resin coating and various miniature devices.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a reactive nanometer inorganic particle / epoxy resin anti-friction and wear-resistant composite material and a preparation method thereof. Background technique [0002] High-performance polymer-based composite materials can be used to prepare mechanical parts and coatings with high wear resistance. Among them, the polymer-based composite material filled with nanoparticles has good wear resistance, light specific gravity, good insulation performance, and easy processing. It is suitable for Aeronautics, electronics, computers and other high-tech, precision and cutting-edge fields replace some metals and alloys to reduce the weight of the structure and improve the flexibility of the machine parts. However, in these composite materials, because the problem of agglomeration of nanoparticles in the matrix has not been overcome, structural defects have been brought about. The material has not b...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/00C08F292/00
Inventor 容敏智章明秋石光纪秋龙
Owner SUN YAT SEN UNIV
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