Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for preparing carbon fiber prepreg fabric with toughened resin film

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

Active Publication Date: 2021-04-30
华夏星辰(苏州)新材料科技有限公司
View PDF2 Cites 0 Cited by
  • 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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing carbon fiber prepreg fabric with 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...

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
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a carbon fiber prepreg fabric from a toughened resin film. The method includes: S1. using chopped carbon fibers mixed with hot-melt thermoplastic fibers to form a toughened mesh structure; S2. spraying the toughened mesh structure with a thermoplastic resin emulsion to make a mesh toughened resin glue Membrane; S3. Lay the mesh fabric toughened resin film on the surface of the carbon fiber fabric, and impregnate and melt it to form a carbon fiber prepreg fabric. The present invention adopts a tough resin film with a mesh cloth structure, which can effectively solve the problem of unstable film-forming properties of thermoplastic resin emulsions, and the toughness and tear resistance of the prepared thermoplastic film; 1. The carbon fiber fabric prepreg is prepared by hot roller pressurization, melt infiltration and impregnation, the impregnation effect is stable, and the prepreg forming efficiency is high; at the same time, the preparation process is simple, the production cost is low, the production process is short, and it 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

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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