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Self-resistance electric heating curing method for resin-based carbon fiber composite material

A composite material and curing method technology, applied in the field of heating and curing of composite materials, can solve the problems of slow heat transfer, high cost, long heating time, etc., and achieve improved temperature distribution, short heating time, and high heating efficiency Effect

Active Publication Date: 2016-04-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in traditional curing and forming composite materials, and solving the problems of long heating time, slow heat transfer speed and high cost in traditional heating methods, the present invention proposes a self-resistance electric heating curing method for resin-based carbon fiber composite materials

Method used

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  • Self-resistance electric heating curing method for resin-based carbon fiber composite material
  • Self-resistance electric heating curing method for resin-based carbon fiber composite material
  • Self-resistance electric heating curing method for resin-based carbon fiber composite material

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Embodiment Construction

[0039] This embodiment is a self-resistance electric heating curing method for resin-based carbon fiber composite materials. The formed part is a "C" shape. The size of the resin-based carbon fiber prepreg used in this embodiment is 1000mm×300mm×0.2mm, the volume fraction of carbon fiber is 0.6, and the resistivity of carbon fiber is 1.7×10 -2 Ω·mm 2 , The curing temperature of resin-based carbon fiber composite material is 180°C.

[0040] The self-resistance electric heating curing of the resin-based carbon fiber composite material is implemented through a pressure tank, and the specific steps are as follows:

[0041] Step 1, surface cleaning. Clean the two ends of the long sides of multiple pieces of rectangular resin-based carbon fiber prepregs with acetone solution, wash off the resin 10 at both ends of the prepregs, and the length of each end of the cleaning is 10-15mm, so that the resin-based carbon fiber prepregs The carbon fibers 9 at both ends of the impregnated m...

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Abstract

The invention provides a self-resistance electric heating curing method for a resin-based carbon fiber composite material. Heat required for resin curing is provided in such a manner of performing ohmic heating on carbon fibers, and simultaneously, in combination with pressure molding implemented by a pressure tank, a desired part finally can be obtained. The self-resistance electric heating curing method for the resin-based carbon fiber composite material is characterized in that the electric heating manner is applied to a fiber-reinforced composite material, and ohmic heating is carried out on a preformed body of the resin-based carbon fiber composite material and the temperature of the preformed body is controlled in such a manner of controlling a power current; by adopting such a heating manner, the temperature is easy to control, the heating time is short, and the heating efficiency is high; a temperature distribution condition of the preformed body during heating curing can be improved, and finally, a resin-based carbon fiber composite material part with the quality meeting the requirements can be obtained.

Description

technical field [0001] The invention relates to the research field of heating and curing of composite materials, in particular to a self-resistance electric heating and curing method of resin-based carbon fiber composite materials. Background technique [0002] Advanced composite materials are widely used in aerospace, energy, transportation and biomedical fields because of their advantages such as specific strength, high specific stiffness and light weight. Generally speaking, advanced composite materials are composed of high volume fraction fibers and medium-high temperature resin systems. Fibers are components that enhance the stiffness and strength of composite materials. The higher the fiber content, the greater the strength and stiffness of the structure. Resin-based carbon fiber composite materials refer to carbon or graphite fibers as reinforcements, which are compounded with resins. Among them, carbon fibers have good performance, many fiber types and specifications...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/44B29C70/54
CPCB29C70/342B29C70/44B29C70/54
Inventor 王永军蔡豫晋王望元振毅杨凯刘天骄何俊杰郭睿李晓治肖旭东
Owner NORTHWESTERN POLYTECHNICAL UNIV
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