Resistance heating forming method of carbon fiber reinforced high-performance thermoplastic composite material

A technology that enhances thermoplasticity and composite materials. It is applied in the field of composite material molding. It can solve the problems of low energy utilization, low efficiency, and long heating time, and achieve the effects of short molding cycle, simple process, and high energy utilization rate.

Inactive Publication Date: 2020-02-07
SHANDONG NON METALLIC MATERIAL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects existing in the prior art, the present invention provides a resistance heating forming method of carbon fiber reinforced thermoplastic composite material, in which high-performance thermoplastic resin film or powder is directly compounded with carbon fiber fabric, and electrodes are preset at both ends of the carbon fiber fabric Electrodes are placed in the area, no need to prepare prepregs in advance, which reduces the preparation process and energy consumption of composite materials. At the same time, it solves the problem of long heating time, low efficiency, and low energy utilization when traditional heating methods are used to form high-performance thermoplastic composite materials. question

Method used

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  • Resistance heating forming method of carbon fiber reinforced high-performance thermoplastic composite material
  • Resistance heating forming method of carbon fiber reinforced high-performance thermoplastic composite material
  • Resistance heating forming method of carbon fiber reinforced high-performance thermoplastic composite material

Examples

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Effect test

Embodiment 1

[0040] The resistance heating forming method of CCF3011 carbon fiber plain weave fabric / polyamide film composite material comprises the following steps:

[0041] Blank: prepare 220mm×200mm, area density 200g / m 2 12 sheets of CCF3011 carbon fiber plain weave fabric, the size is 200mm×200mm, the surface density is 92g / m 2 , 26 pieces of polyamide film with a thickness of 0.05mm, leaving a 200mm×10mm area at each end of the carbon fiber fabric length direction as the electrode area, and aligning them in the center according to the order of two layers of resin film and one layer of carbon fiber fabric. Get the green body. A layer of polytetrafluoroethylene release cloth is placed on the upper surface and the lower surface of the green body, and then fixed with clips to facilitate electrode installation.

[0042] Install electrodes: Cut 2 pieces of copper foil of 230mm×10mm×0.065mm as the positive and negative electrodes, and place them in the electrode area at both ends of the c...

Embodiment 2

[0049] The resistance heating forming method of T300 carbon fiber fabric / polyphenylene sulfide powder composite material comprises the following steps:

[0050] Billet: cutting size is 330mm×260mm, area density is 200g / m 2 27 layers of T300 carbon fiber fabric, weigh 164g of polyphenylene sulfide powder according to the weight ratio of carbon fiber fabric and polyphenylene sulfide powder of 64:36, and divide it into 26 parts with a particle size of 0.070mm. A 260mm×20mm area is left at both ends of the carbon fiber fabric in the length direction as an electrode area for laying electrodes, and is protected with cardboard to avoid contamination with powder. First lay a layer of polytetrafluoroethylene release cloth on the rigid formwork, and then evenly disperse 1 part of polyphenylene sulfide powder on the carbon fiber fabric. The area of ​​the resin powder is 290mm×260mm, and then lay the second layer of carbon fiber The fabric and resin powder are placed in this order to obt...

Embodiment 3

[0058] The resistance heating forming method of T700 multiaxial carbon fiber fabric / polyimide powder composite material comprises the following steps:

[0059] Billet: cutting size is 300mm×270mm, surface density is 300g / m 2 30 layers of T700 multi-axial carbon fiber fabric, weigh 486g of polyimide powder according to the weight ratio of carbon fiber fabric and polyimide powder of 60:40, and divide it into 29 parts with a particle size of 0.180mm. An area of ​​270mm×25mm is left at both ends of the carbon fiber fabric in the length direction as an electrode area for laying electrodes, and is protected by cardboard to avoid contamination with powder. First lay a layer of polytetrafluoroethylene release cloth on the rigid formwork, then evenly disperse 1 part of polyimide powder on the carbon fiber fabric, the area of ​​the resin powder is 250mm×270mm, and then lay the second layer of carbon fiber The fabric and resin powder are placed in this order to obtain the green body, an...

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Abstract

The invention belongs to the technical field of composite material forming. Combination is conducted in the manner of directly and alternately laying high-performance thermoplastic resin thin films orpowder and carbon fiber textiles, electrodes are placed on preset electrode areas at the two ends of each carbon fiber textile, the carbon fiber textiles are directly powered on and heated through the power-on heating characteristic of resistance of the carbon fiber textiles themselves, and rapid processing and forming of the high-performance thermoplastic composite material are achieved. A novelprocessing way is provided for forming and processing of the carbon fiber reinforced high-performance thermoplastic composite material, preparation working procedures of the composite material are reduced, the forming heating time is short, efficiency is high, and the energy consumption is low. The method is suitable for preparation of the thermoplastic resin based composite material and is particularly suitable for preparation of the composite material with high-melting-point thermoplastic resin as the substrate.

Description

technical field [0001] The invention relates to the technical field of composite material molding, in particular to a resistance heating rapid prototyping method of carbon fiber reinforced high-performance thermoplastic resin film or powder. Background technique [0002] Carbon fiber reinforced high-performance thermoplastic resin-based composite materials have high specific strength, high specific modulus, excellent toughness and damage tolerance, good impact resistance, good environmental resistance, heat and humidity resistance, low moisture absorption, and can be melted many times. With the advantages of repeated molding and recycling, it is more and more widely used in the fields of national defense and civilian use. [0003] The melting temperature of the resin matrix of high-performance thermoplastic composite materials is relatively high, generally 200-400°C. Composite laminates usually use a melt-impregnation process. The entire molding process requires two meltings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29C35/02
CPCB29C35/02B29C70/342B29C70/54B29C2035/0211
Inventor 王志远陈刚王启芬崇林于倩倩吴忠泉王忠
Owner SHANDONG NON METALLIC MATERIAL RES INST
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