Carbon fiber felt and carbon nanotube/epoxy resin composite material and preparation method thereof

A technology of carbon fiber felt and epoxy resin, applied in the field of carbon fiber felt@carbon nanotube/epoxy resin composite material and its preparation, can solve the problem of excessive heat and accumulation of electronic and electrical equipment, affecting the normal operation of equipment, damage, etc. problems, to achieve the effect of widening the heat conduction path, high thermal conductivity, and reducing contact thermal resistance

Pending Publication Date: 2022-08-09
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The development of miniaturization and integration of electronic equipment and electrical equipment will inevitably generate excessive heat and accumulation, which will affect the normal operation of equipment and damage

Method used

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  • Carbon fiber felt and carbon nanotube/epoxy resin composite material and preparation method thereof
  • Carbon fiber felt and carbon nanotube/epoxy resin composite material and preparation method thereof
  • Carbon fiber felt and carbon nanotube/epoxy resin composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In this example, the carbon nanotube@carbon fiber felt / epoxy resin composite material is prepared according to the following steps:

[0028] Step 1. Preparation of fCFelt

[0029] Take 60 mL of concentrated nitric acid in a polytetrafluoroethylene-lined reaction kettle, put 2 × 2 cm 2 The clean CFelt was placed in it and reacted in an oven at 100 °C for 6 hours to obtain a modified carbon fiber felt, which was denoted as fCFelt.

[0030] Step 2. Preparation of CFelt@ZIF-67

[0031] Dissolve 1.164g of cobalt nitrate hexahydrate in 120mL of methanol, put the fCFelt obtained in step 1 into it, stir for 1h, slowly add 80mL of methanol solution containing 2.268g of 2-methylimidazole and 40μL of triethylamine dropwise, and stir for 3h , the sample was taken out, washed with methanol for several times, and dried at 60 °C for 24 h to obtain CFelt@ZIF-67.

[0032] Step 3. Preparation of CFelt@CNTs

[0033] The CFelt@ZIF-67 obtained in step 2 was placed in a tube furnace, and...

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Abstract

The invention discloses a carbon fiber felt and carbon nanotube/epoxy resin composite material and a preparation method thereof.The composite material is prepared by the steps that a carbon fiber felt serves as a template, after concentrated nitric acid modification and in-situ growth of ZIF-67 crystals are conducted, the carbon fiber felt with carbon nanotubes growing on the surface is obtained through the high-temperature catalytic pyrolysis and acid etching technology, and then the carbon fiber felt and the ZIF-67 crystals are obtained; and finally, preparing the carbon fiber felt and carbon nanotube/epoxy resin composite material by adopting a vacuum permeation epoxy resin process. A template pre-construction method is adopted, a carbon fiber felt framework is used as a template, adjacent carbon fibers are bridged and a heat conduction path is expanded by means of carbon nanotubes grown on the surfaces of the carbon fibers in situ, the contact thermal resistance between the carbon fibers is effectively reduced, meanwhile, a highly-interconnected three-dimensional network structure is constructed, and the heat conduction performance of the epoxy resin is effectively improved.

Description

technical field [0001] The invention relates to the technical field of epoxy resin composite materials, in particular, to a carbon fiber felt@carbon nanotube / epoxy resin composite material and a preparation method and application thereof. Background technique [0002] The development of miniaturization and integration of electronic and electrical equipment inevitably generates excessive heat and accumulation, which affects the normal operation of the equipment and damages it. Therefore, finding efficient thermal management materials to dissipate the heat generated is critical to the performance, longevity and reliability of these devices. Generally, polymer materials are widely used in the preparation of thermally conductive composites due to their advantages of light weight, low cost, corrosion resistance, and easy processing. Unfortunately, the thermal conductivity of common polymers is about 0.2Wm -1 K -1 , which is due to phonon scattering generated by a large number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/06C08K3/04
CPCC08K7/06C08K3/041C08L63/00
Inventor 钱家盛严玉叶伍斌
Owner ANHUI UNIVERSITY
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