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Preparation method of graphene/helical carbon fiber/epoxy resin composite material

A technology of spiral carbon fiber and epoxy resin, which is applied in the chemical characteristics of fibers, textiles and paper making, etc., can solve the problems of affecting electrical conductivity, adverse effects of epoxy resin mechanical properties and electrical conductivity, environmental pollution, etc.

Active Publication Date: 2021-10-08
NINGBO GRAPHENE INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned preparation method has the following defects: first, graphene is very prone to agglomeration, resulting in an increase in the amount of graphene, and the final mechanical properties and electrical conductivity of the epoxy resin are adversely affected
Second, surface modification will destroy the structure of graphene itself, thus affecting its electrical conductivity
Ultimately making the epoxy composite less conductive
The third method is to use a solvent for pre-dispersion, although the graphene can be uniformly dispersed in the epoxy resin, but the use and volatilization of the solvent will cause environmental pollution, and if the solvent remains in the epoxy resin, it will affect the mechanical properties of the resin. damage

Method used

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  • Preparation method of graphene/helical carbon fiber/epoxy resin composite material
  • Preparation method of graphene/helical carbon fiber/epoxy resin composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A preparation method of graphene / spiral carbon fiber / epoxy resin composite material, the method comprising:

[0030] S1, loading the catalyst used to prepare the spiral carbon fiber in the three-dimensional foam to obtain the supported catalyst; specifically,

[0031] S1.1. Under magnetic stirring, slowly add 100mL of 0.02mol / L copper chloride aqueous solution into 100mL of 0.02mol / L potassium sodium tartrate solution, keep stirring for 20min, then filter to obtain a blue precipitate, and alternately use ethanol and distilled water Wash 3 times to obtain copper tartrate; then disperse copper tartrate in water to form a suspension, immerse the washed melamine foam in the suspension, and place it in an oven at 100°C after the melamine foam absorbs the suspension Drying; the dried melamine foam is submerged in the suspension again, and then dried in an oven at 100° C. to obtain a melamine foam loaded with copper tartrate;

[0032] S1.2. Put the melamine foam loaded with c...

Embodiment 2

[0037] A preparation method of graphene / spiral carbon fiber / epoxy resin composite material, the method comprising:

[0038] S1, loading the catalyst used to prepare the spiral carbon fiber in the three-dimensional foam to obtain the supported catalyst; specifically,

[0039]S1.1. Under magnetic stirring, slowly add 100mL of 0.05mol / L copper chloride aqueous solution into 100mL of 0.05mol / L potassium sodium tartrate solution, keep stirring for 40min, filter to obtain blue precipitate, and alternately use ethanol and distilled water Wash 3 times to obtain copper tartrate; then disperse copper tartrate in water to form a suspension, immerse the washed melamine foam in the suspension, and place it in an oven at 80°C after the melamine foam is fully absorbed by the suspension Drying; repeat above-mentioned immersion, dry operation three times, obtain the melamine foam that is loaded with copper tartrate;

[0040] S1.2. Put the melamine foam loaded with copper tartrate in the porce...

Embodiment 3

[0045] A preparation method of graphene / spiral carbon fiber / epoxy resin composite material, the method comprising:

[0046] S1, loading the catalyst used to prepare the spiral carbon fiber in the three-dimensional foam to obtain the supported catalyst; specifically,

[0047] S1.1. Under magnetic stirring, slowly add 100mL of 0.03mol / L copper chloride aqueous solution into 100mL of 0.03mol / L potassium sodium tartrate solution, keep stirring for 20min and then filter to obtain a blue precipitate, and alternately use ethanol and distilled water Wash 3 times to obtain copper tartrate; then disperse copper tartrate in water to form a suspension, immerse the washed melamine foam in the suspension, and put it in an oven at 120°C after the melamine foam absorbs the suspension Drying; the dried melamine foam is submerged in the suspension again, and then dried in an oven at 120° C. to obtain a melamine foam loaded with copper tartrate;

[0048] S1.2. Put the melamine foam loaded with ...

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Abstract

The invention discloses a preparation method of a graphene / helical carbon fiber / epoxy resin composite material, which comprises of: loading a catalyst in three-dimensional foam to obtain a loaded catalyst; putting the loaded catalyst into a reaction container, introducing inert gas into the reaction container, then introducing carbon source gas, heating to a temperature at which the carbon source gas is decomposed, keeping the temperature for 20-60 minutes, then introducing inert gas to replace the redundant carbon source gas, and cooling to obtain helical carbon fibers; dispersing graphene or graphene oxide in water to obtain a turbid liquid, immersing helical carbon fibers in the turbid liquid, drying, heating the dried solid to 900-1200 DEG C, and carrying out heat preservation for 1-6 hours to obtain graphene / helical carbon fibers; and adding the graphene / helical carbon fibers into epoxy resin, raising the temperature to 90-130 DEG C, vacuumizing, raising the temperature to 140-180 DEG C, and curing for 3-10 hours to obtain a graphene / helical carbon fiber / epoxy resin composite material. The composite material prepared by the invention has excellent mechanical properties and conductivity.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing a graphene / spiral carbon fiber / epoxy resin composite material. Background technique [0002] Composite materials refer to two or more materials with different properties, which are composed of materials with new properties through physical or chemical methods. Different materials learn from each other in terms of performance. Due to its special crystal structure and good performance, graphene has great potential in improving the mechanical, thermal and electrical properties of resin-based composites. [0003] At present, there are mainly three methods for preparing graphene / epoxy resin composite materials: first, graphene powder is directly added to epoxy for stirring or ultrasonic dispersion, and then a crosslinking agent is added for curing and molding. The second type is that the graphene powder is modified by a silane coupling agent and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K7/06C08K3/04D01F9/127
CPCC08K7/06C08K3/042D01F9/1273D01F9/1275D01F9/1272C08K2201/001C08L63/00
Inventor 梅园赖垂林刘兆平
Owner NINGBO GRAPHENE INNOVATION CENT CO LTD
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