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Preparation method for polyimide/graphene/perylenetetracarboxydianhydride wear-resistant composite material

A technology of composite materials and polyimide, which is applied in the field of composite materials, can solve problems that have not been reported in the literature, and achieve the effects of excellent tensile modulus, simple operation, and easy large-scale application

Inactive Publication Date: 2019-01-29
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This idea has not been reported in the literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Dissolve ODA in alcohol, then add it to a three-neck flask, heat to boiling and keep for 30 minutes, then cool naturally to room temperature to recrystallize, then pour it into a Buchner funnel and filter it with a vacuum pump, and put the filtered ODA at 80°C Vacuum-dried in an oven for 3 hours to obtain recrystallized ODA.

[0019] (2) Weigh 1mg of graphene and 1mg of perylene anhydride into a three-neck flask, inject 5mL of NMP, and seal the flask with ultrasonication for 1h to prepare a graphene / perylene anhydride solution.

[0020] (3) Weigh 0.0025 mol of ODA obtained in step (1), add it into a three-neck flask, inject 10 mL of NMP, stir magnetically at a speed of 300 rpm, then add 0.0025 mol of ODPA and the prepared in step (2) Graphene / perylene anhydride solution, the entire process of adding raw materials and reagents was completed within 15 min, and then stirred and reacted at 25 °C for 24 h under a nitrogen atmosphere to obtain a viscous PAA solution conta...

Embodiment 2

[0023] (1) Dissolve ODA in alcohol, then add it to a three-neck flask, heat to boiling and keep for 40 minutes, then cool naturally to room temperature to recrystallize, then pour it into a Buchner funnel and filter it with a vacuum pump, and put the filtered ODA at 80°C Vacuum-dried in an oven for 2 hours to obtain recrystallized ODA.

[0024] (2) Weigh 3mg of graphene and 1mg of perylene anhydride into a three-neck flask, inject 5mL of NMP, and seal the flask with ultrasonication for 1h to prepare a graphene / perylene anhydride solution.

[0025] (3) Weigh 0.0025 mol of ODA obtained in step (1), add it into a three-neck flask, inject 10 mL of NMP, stir magnetically at a speed of 300 rpm, then add 0.0025 mol of ODPA and the prepared in step (2) Graphene / perylene anhydride solution, the entire process of adding raw materials and reagents was completed within 15 min, and then stirred and reacted at 25 °C for 24 h under a nitrogen atmosphere to obtain a viscous PAA solution conta...

Embodiment 3

[0028] (1) Dissolve ODA in alcohol, then add it to a three-neck flask, heat to boiling and keep for 50 minutes, then cool naturally to room temperature to recrystallize, then pour it into a Buchner funnel and filter it with a vacuum pump, and put the filtered ODA at 80°C Vacuum-dried in an oven for 3 hours to obtain recrystallized ODA.

[0029] (2) Weigh 5mg of graphene and 1mg of perylene anhydride into a three-neck flask, inject 5mL of NMP, and seal the flask with ultrasonication for 1 hour to prepare a graphene / perylene anhydride solution.

[0030] (3) Weigh 0.0025 mol of ODA obtained in step (1), add it into a three-neck flask, inject 10 mL of NMP, stir magnetically at a speed of 300 rpm, then add 0.0025 mol of ODPA and the prepared in step (2) Graphene / perylene anhydride solution, the entire process of adding raw materials and reagents was completed within 15 min, and then stirred and reacted at 25 °C for 24 h under a nitrogen atmosphere to obtain a viscous PAA solution c...

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PUM

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Abstract

The invention discloses a preparation method for a polyimide / graphene / perylenetetracarboxydianhydride wear-resistant composite material. The preparation method comprises the steps of recrystallizing ODA; adding graphene and perylenetetracarboxydianhydride into NMP, conducting sealed ultrasonic treatment to obtain a graphene / perylenetetracarboxydianhydride solution; mixing the ODA, the graphene / perylenetetracarboxydianhydride solution and ODPA under stirring for reaction, so as to obtain a viscous PAA solution containing graphene / perylenetetracarboxydianhydride, conducting ultrasonic dispersing for 30 min, then uniformly spreading the dispersed material on a horizontal mold, and then putting the mold in an oven for thermal imidization to obtain the polyimide / graphene / perylenetetracarboxydianhydride wear-resistant composite material. The method of the invention has simple operation, is easy to widely apply, and fully utilizes the complementary advantages of graphene and polyimide in performance, so that the obtained polyimide / graphene / perylenetetracarboxydianhydride wear-resistant composite material has excellent tensile modulus, heat resistance, and good friction performance, and has important application prospects in the field of aerospace and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a method for preparing a polyimide / graphene / perylene anhydride wear-resistant composite material. Background technique [0002] PI has a series of advantages such as excellent thermal stability, chemical stability, electrical insulation, high glass transition temperature, high mechanical strength and radiation resistance. [0003] The wear and tear of materials has always been a huge problem in the world. The lost materials will affect the work efficiency and machine life, and also cause huge economic losses. How to make the originally non-abrasive material become lubricated and wear-resistant without affecting its work efficiency is what people are eagerly hoping for. Practice has proved that among many wear-resistant strategies, the simplest, most effective and cost-effective method is to use a friction-resistant coating to cover the surface of the material. [00...

Claims

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Application Information

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IPC IPC(8): C08G73/10C08K3/04C08J5/18C08L79/08
CPCC08G73/1007C08G73/1042C08G73/1071C08J5/18C08J2379/08C08K3/042
Inventor 李裕琪阮红徐旭李丰安陆绍荣张秋
Owner GUILIN UNIVERSITY OF TECHNOLOGY