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Method for preparing carbon fiber pre-impregnated fabric from toughened resin film

A technology of carbon fiber prepreg and carbon fiber fabric, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, flat products, etc., can solve the problems of uneven distribution of resin powder coating, difficult realization of thermoplastic resin dissolution, and poor impregnation effect Stability and other issues, to achieve the effect of good final hot-melt effect, high molding efficiency, and broad industrial application prospects

Active Publication Date: 2019-01-25
华夏星辰(苏州)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

Among them, the dissolution of thermoplastic resin is difficult to achieve, and suitable solvents are often more toxic; the hot-melt heating equipment required by the melt impregnation method consumes a lot of energy, and the melting efficiency is low; the powder impregnation method is due to the encapsulation of resin powder in the fabric impregnation process. Cover distribution is easy to be uneven and cause instability of impregnation effect

Method used

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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  • Method for preparing carbon fiber pre-impregnated fabric from toughened resin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The invention discloses a method for preparing a carbon fiber prepreg fabric by laminating a composite carbon fiber multi-dimensional or multi-directional fabric with a resin adhesive film containing a fabric toughening structure.

[0047] First, chopped viscose-based carbon fibers with a length of 5 cm were mixed with polyamide hot-melt thermoplastic fibers, and the mixing ratio was 1:1.

[0048] Afterwards, use the vinyl acrylic acid copolymer (EAA) emulsion with a solid content of 20% to atomize and spray the above-mentioned mesh cloth base, and then dry it in the range of 80°C to form a film, and the prepared surface density is controlled at 20g / m 2 , A tough resin film with a resin content of 30%.

[0049] Finally, T300 carbon fiber was selected to prepare the plain weave prefabricated fabric, and the hot roller pressing method was adopted, in which the temperature of the hot roller was controlled at 130°C, the speed of the hot roller was controlled at 40m / min, and...

Embodiment 2

[0051] The invention discloses a method for preparing a carbon fiber prepreg fabric by laminating a composite carbon fiber multi-dimensional or multi-directional fabric with a resin adhesive film containing a fabric toughening structure.

[0052] First, chopped viscose-based carbon fibers with a length of 20 cm were mixed with polyetherketone hot-melt thermoplastic fibers, and the mixing ratio was 1:2.

[0053] Afterwards, the polyurethane emulsion with a solid content of 20% was used to atomize and spray the above-mentioned mesh cloth base, and then dried at 70°C to form a film, and the prepared area density was controlled at 40g / m 2 , A tough resin film with a resin content of 30%.

[0054] Finally, T800 carbon fiber was selected to prepare the unidirectional prefabricated fabric, and the hot roller pressing method was adopted. The temperature of the hot roller was controlled at 150°C, the speed of the hot roller was controlled at 30m / min, and the extrusion pressure of the h...

Embodiment 3

[0056] The invention discloses a method for preparing a carbon fiber prepreg fabric by laminating a composite carbon fiber multi-dimensional or multi-directional fabric with a resin adhesive film containing a fabric toughening structure.

[0057] Firstly, short-cut viscose-based carbon fibers with a length of 12 cm are mixed with polyethylene hot-melt thermoplastic fibers, and the mixing ratio is 1:4.

[0058] Then use polyethylene emulsion with a solid content of 35% to atomize and spray the above-mentioned mesh cloth base, and then dry it in the range of 60°C to form a film, and the prepared surface density is controlled at 60g / m 2 1. Tough resin film with a resin content of 15%.

[0059] Finally, M60J carbon fiber was selected to prepare the satin prefabricated fabric, and the hot roller pressing method was adopted, in which the temperature of the hot roller was controlled at 140°C, the speed of the hot roller was controlled at 30m / min, and the extrusion pressure of the hot...

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Abstract

The invention discloses a method for preparing carbon fiber pre-impregnated fabric from a toughened resin film. The method comprises the steps of S1, forming a toughened mesh base fabric structure through mixing of chopped carbon fibers and hot-melt thermoplastic fibers; S2, spraying a thermoplastic resin emulsion onto the toughened mesh base fabric structure to form the toughened resin film withmesh base fabric; S3, overlaying the toughened resin film with the mesh base fabric on the surface of carbon fiber fabric, and forming the carbon fiber pre-impregnated fabric after impregnation, melting and compounding. The method has the advantages that through the toughened resin film containing the mesh base fabric structure, the problem of film formation instability of the thermoplastic resinemulsion can be effectively solved, and the prepared thermoplastic plastic film has high toughness and tearing strength; a carbon fiber fabric pre-impregnating material is prepared through overlayingof hot-melt plastic films and pressured infiltration and impregnation of hot rolls, so that the impregnation compounding effect is stable, and the forming efficiency of the pre-impregnated fabric is high; the preparation process is simple, the production cost is low, the production procedure is short, and accordingly, the method is suitable for industrial mass production.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber prepreg fabric preparation, and in particular relates to a method for preparing carbon fiber prepreg fabric with a toughened resin film. Background technique [0002] Carbon fiber thermoplastic prepreg is made of carbon fiber multi-directional fabric impregnated with thermoplastic resin. The prepreg can be laminated and composited to form a thermoplastic carbon fiber composite sheet. The carbon fiber filament has high strength, high modulus, high Combining the impact strength with the high toughness and repeated molding characteristics of thermoplastic resin, the resulting thermoplastic carbon fiber prepreg fabric is suitable for the preparation of various thermoplastic carbon fiber composite materials, and has been widely used in industry, agriculture, transportation, aerospace and other fields. With the development and progress of the production technology of carbon fiber thermoplastic prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/04B32B27/02B32B27/12B32B37/02B32B38/08B29C70/30
CPCB29C70/30B29L2007/00B32B5/02B32B5/028B32B5/08B32B5/26B32B37/02B32B38/08B32B2250/20B32B2260/021B32B2260/046B32B2262/106B32B2262/14B32B2270/00B32B2307/558B32B2307/5825
Inventor 朱波曹伟伟乔琨赵圣尧王永伟张敏高学平
Owner 华夏星辰(苏州)新材料科技有限公司