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System and preparation method of composite infiltrated thermoplastic carbon fiber prepreg fabric

A carbon fiber prepreg, carbon fiber technology, applied in the direction of coating, can solve the problems of high viscosity, large molecular weight, difficult to achieve uniform penetration effect of resin and carbon fiber, etc., to improve the interface bonding characteristics and improve the effect of penetration effect.

Pending Publication Date: 2020-11-06
山东宽原新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After research by the inventors of the present invention, it was found that the high viscosity problem caused by the high molecular weight of thermoplastic resin due to its own molecular structure characteristics, so it is difficult to achieve the uniformity of resin and carbon fiber in the preparation process of thermoplastic carbon fiber composite materials. Penetration effect, which directly affects the interfacial bonding characteristics of composite materials

Method used

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  • System and preparation method of composite infiltrated thermoplastic carbon fiber prepreg fabric

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preparation example Construction

[0020] Considering that it is difficult to achieve uniform penetration effect of resin and carbon fiber in the preparation process of thermoplastic carbon fiber composite material, the present invention proposes a system and preparation method for composite infiltrating thermoplastic carbon fiber prepreg fabric.

[0021] A typical embodiment of the present invention provides a method for preparing a composite infiltrated thermoplastic carbon fiber prepreg fabric. The continuous carbon fiber filaments are spun to obtain a carbon fiber unidirectional spun fabric, and the carbon fiber unidirectional spun fabric is treated with hot melt adhesive. The spread yarn fabric is impregnated, and the impregnated carbon fiber unidirectional spread yarn fabric is sprayed with thermoplastic resin powder, and the sprayed carbon fiber unidirectional spread yarn fabric is energized and heated by the contact electrode, so that the thermoplastic resin powder enters the carbon fiber for the first time....

Embodiment 1

[0056] The specific steps for preparing a thermoplastic carbon fiber composite prepreg fabric by composite melt infiltration are as follows:

[0057] First, the carbon fiber unidirectional fabric spreading yarn and superfine thermoplastic resin powder surface spraying. First, the 3k specification T300 carbon fiber continuous filament is spreading, the spreading tension is controlled at 5N, the spreading rate is 2m / min, and the final spreading width is 3 times the original width of the fiber. During the yarn spreading process, a 3% polyester hot-melt adhesive coating was simultaneously dipped and coated on the surface of the carbon fiber. After dipping the hot-melt adhesive coating emulsion, it was dried at 80°C for 10 minutes to apply the hot-melt adhesive coating. The carbon fiber unidirectional spread yarn fabric is sprayed on one side surface of polyamide ultrafine resin powder with a thickness of 0.02mm and a particle size of 2 microns through a high pressure of 0.5MPa.

[005...

Embodiment 2

[0061] The specific steps for preparing a thermoplastic carbon fiber composite prepreg fabric by composite melt infiltration are as follows:

[0062] First, the carbon fiber unidirectional fabric spreading yarn and superfine thermoplastic resin powder surface spraying. First, the 12k specification T1000 carbon fiber continuous filament is spreading, the spreading tension is controlled at 6N, the spreading speed is 8m / min, and the final spreading width is 5 times the original width of the fiber. During the yarn spreading process, the carbon fiber surface was simultaneously dipped and coated with a 10% copolyester hot-melt adhesive coating. After dipping the hot-melt adhesive coating emulsion, it was dried at 120°C for 9 minutes to apply the hot-melt adhesive. The layer of carbon fiber unidirectional spread yarn fabric is sprayed on one side of the surface with a high pressure of 1 MPa to spray ethylene terephthalate fine resin powder with a thickness of 0.1 mm and a particle size ...

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Abstract

The invention discloses a system and preparation method of a composite infiltrated thermoplastic carbon fiber prepreg fabric. The preparation method comprises the following steps that carbon fiber continuous filaments are spread to obtain a carbon fiber one-way spread fabric, and the carbon fiber one-way spread fabric is impregnated by adopting a hot melt adhesive, thermoplastic resin powder is sprayed to the impregnated carbon fiber one-way spread fabric, the sprayed carbon fiber one-way spread fabric is electrified and heated by adopting a contact electrode, the thermoplastic resin powder isenabled to infiltrate into the carbon fiber one-way spread fabric for the first time, a thermoplastic resin film is pasted onto the surface of the carbon fiber one-way spread fabric after the first-time infiltration, the carbon fiber one-way spread fabric pasted with the thermoplastic resin film is heated and pressurized through a roller, and therefore secondary infiltration is carried out.

Description

Technical field [0001] The invention relates to a system and a preparation method for composite infiltration thermoplastic carbon fiber prepreg fabric. Background technique [0002] Disclosure of the background information is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an acknowledgement or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art. [0003] Thermosetting resin matrix carbon fiber composite material is currently a widely used carbon fiber composite material system, in which the three-dimensional cross-linking and curing reaction of the resin is used to form an insoluble and insoluble composite structure reinforced by carbon fiber, due to its low density, light weight and excellent high specific strength With comprehensive mechanical properties such as high specific modulus, it has become a potential substitute for metal and o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B29B15/14B29K101/12
CPCB29B15/14B29K2101/12
Inventor 朱波曹伟伟林志涛王永伟
Owner 山东宽原新材料科技有限公司
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