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Preparation method of graphene/epoxy resin composite material for grinding and polishing

A technology of epoxy resin and composite materials, which is applied in the direction of abrasives, manufacturing tools, metal processing equipment, etc., can solve the problems of high wear rate and restrictions, and achieve the effects of easing conditions, enhancing holding power, and large market application value

Active Publication Date: 2018-07-24
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the epoxy resin in this method is not currently the most widely used epoxy resin on the market, and the triglycidyl p-aminophenol cured product has a higher wear rate under wet grinding conditions than the conventional epoxy resin E-51 cured product , so this method is limited in the field of grinding and polishing

Method used

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  • Preparation method of graphene/epoxy resin composite material for grinding and polishing
  • Preparation method of graphene/epoxy resin composite material for grinding and polishing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Graphene oxide was dispersed in water, the concentration was controlled at 0.4g / L, and 500ml of reddish-brown clear solution was obtained by ultrasonic dispersion. Then add 100g of epoxy resin E-51 and 2g of N,N-diethylaniline to the graphene oxide aqueous solution, stir vigorously for 10 minutes, add 1g of ascorbic acid to adjust the pH of the mixed solution to 4-5, and continue stirring at a low speed. After a clear and transparent water phase appears in the upper layer of the mixed solution, pour out the water phase, add water equal to the volume of the resin and stir again, repeat the operation until the pH of the water phase is about 7, and pour out the upper water phase. Put the obtained lower graphene oxide / epoxy resin phase into a vacuum oven at 90°C, and keep the vacuum at -100KPa until there are no bubbles in the resin. Add 80g of methyltetrahydrophthalic anhydride, stir for 5-10 minutes, put into a vacuum oven with a vacuum degree of -100KPa to remove air bub...

Embodiment 2

[0037] Graphene oxide was dispersed in water, the concentration was controlled at 1.2g / L, and 500ml of reddish-brown clear solution was obtained by ultrasonic dispersion. Then add 100g of epoxy resin E-51 and 2g of N,N-diethylaniline to the graphene oxide aqueous solution, stir vigorously for 10 minutes, add 1g of ascorbic acid to adjust the pH of the mixed solution to 4, and continue stirring at a low speed. After a clear and transparent water phase appears in the upper layer of the mixed solution, pour out the water phase, add water equal to the volume of the resin and stir again, repeat the operation until the pH of the water phase is about 7, and pour out the upper water phase. Put the obtained lower graphene oxide / epoxy resin phase into a vacuum oven at 90°C, and keep the vacuum at -100KPa until there are no bubbles in the resin. Add 80g of methyltetrahydrophthalic anhydride, stir for 10 minutes, put into a vacuum oven with a vacuum degree of -100KPa to remove air bubbles...

Embodiment 3

[0040] Graphene oxide was dispersed in water, the concentration was controlled at 2g / L, and 500ml of reddish-brown clear solution was obtained by ultrasonic dispersion. Then add 100g of epoxy resin E-51 and 2g of N,N-diethylaniline to the graphene oxide aqueous solution, stir vigorously for 10 minutes, add 1g of ascorbic acid to adjust the pH of the mixed solution to 4, and continue stirring at a low speed. After a clear and transparent water phase appears in the upper layer of the mixed solution, pour out the water phase, add water equal to the volume of the resin and stir again, repeat the operation until the pH of the water phase is about 7, and pour out the upper water phase. Put the obtained lower graphene oxide / epoxy resin phase into a vacuum oven at 90°C, and keep the vacuum at -100KPa until there are no bubbles in the resin. Add 80g of methyltetrahydrophthalic anhydride, stir for 10 minutes, put into a vacuum oven with a vacuum degree of -100KPa to remove air bubbles, ...

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Abstract

The invention discloses a preparation method of a graphene / epoxy resin composite material for grinding and polishing. The preparation method is characterized by comprising the following steps: performing reaction on a curing accelerator and an acidic reducer to generate a phase transfer agent, transferring graphene oxide from an aqueous phase to an epoxy resin phase, and after completely removingwater, performing high-temperature curing reduction to prepare a graphene / epoxy resin nanometer composite material. An organic solvent does not exist in the preparation process; and the preparation method is environment-friendly, simple to operate and moderate in condition, is suitable for epoxy resin with the conventional trade mark in the market and can adapt to the requirement of large-scale production. Nano-scale dispersion of the graphene in the epoxy resin is realized, and the graphene / epoxy resin nanometer composite material has the characteristics of high strength and high wear resistance. Meanwhile, the graphene can serve as an interface modifying agent to enhance the holding force of the epoxy resin on inorganic fillers, so that great market application value in the field of grinding and polishing tools is achieved.

Description

technical field [0001] The invention belongs to the field of resin-based nanocomposite material preparation, and relates to a method for preparing a graphene / epoxy resin composite material for grinding and polishing. Background technique [0002] Epoxy resin is a kind of thermosetting polymer material, which is widely used in engineering structural materials, adhesives, coatings and other fields due to its excellent mechanical properties, dimensional stability, adhesion and good processing performance. Among them, epoxy resin is often used as a bonding agent for grinding and polishing abrasive tools. However, the wear resistance, heat resistance, impact and adhesion of epoxy resin often fail to meet the performance requirements of grinding and polishing abrasives such as diamond, resulting in a reduction in the service life of the abrasive. Therefore, the development of high-performance epoxy resin has important application value. [0003] Due to its unique two-dimensional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/00C08J3/20B24D3/28B24D3/34
CPCB24D3/28B24D3/344C08J3/2053C08J2363/00C08K7/00C08K2201/011
Inventor 王睿吴立新郑幼丹
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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