Method for preparing continuous carbon fiber-reinforced thermoplastic resin composite material

A technology for resin composite materials and thermoplastic enhancement, which is applied in the field of resin composite material preparation, can solve the problems of high melting point of mixed solvent, complex preparation process and difficult removal, and achieves widening the scope of thermoplastic resin, strong process controllability and impregnation effect. Good results

Inactive Publication Date: 2012-04-18
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
View PDF5 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the research of liquid phase impregnation process, CN1603363A reported that the prepreg of continuous fiber reinforced thermoplastic resin composite material was prepared by solution impregnation method, which solved the problem of fiber entanglement and pultrusion between polyarylether series resin and continuous fiber in the impregnation process , but the mixed solvent used has a high melting point and high toxicity, and it is difficult to completely remove it, which brings certain difficulties to the actual operation
The mixed solvent used in the CN1257226C patent has limited solubility to the thermoplastic resin, and the dissolution of the resin and the preparation of the prepreg need to be carried out at a relatively high temperature. The volatilization of the organic solvent will bring additional costs to the actual operation and industrial application, making the original price Higher carbon fiber reinforced thermoplastic resin composites are more limited in application
This preparation process is more complex and costly

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
  • Method for preparing continuous carbon fiber-reinforced thermoplastic resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1 part by mass of polyethersulfone (PES) was dissolved in 30 parts by mass of a mixed solvent of N,N dimethylacetamide (DMAc) and acetone, wherein the mass ratio of DMAc to acetone was 1:1. Add 0.5 parts by mass of polyphenylene sulfide powder into the PES-DMAc solution, mechanically stir at a lower stirring rate for 60 minutes, impregnate the prepreg made of continuous carbon fiber, and perform the following processing according to the processing technology of hot pressing :

[0024] Cold pressing: 10MPa / room temperature / 60Min+hot pressing: 15MPa / 225°C / 60Min+15MPa / 350°C / 120Min+cooling: 80°C / water cooling+pressure relief and demoulding. The continuous carbon fiber reinforced composite material prepared by the above process has excellent comprehensive mechanical properties and can meet the requirements of general industrial use. Please see attached table 1 for specific performance test values.

Embodiment 2

[0026] 2 parts by mass of polyethersulfone (PES) were dissolved in 40 parts by mass of a mixed solvent of N,N dimethylacetamide (DMAc) and acetone, wherein the mass ratio of DMAc to acetone was 2:1. Add 0.75 parts by mass of polyphenylene sulfide powder into the PES-DMAc solution, oscillate ultrasonically for 60 minutes, impregnate the prepreg made of continuous carbon fiber, and perform the following processing according to the processing technology of hot pressing:

[0027] Cold pressing: 8MPa / room temperature / 50Min+hot pressing: 13MPa / 210°C / 50Min+13MPa / 320°C / 100Min+cooling: 80°C / water cooling+pressure release. The continuous carbon fiber reinforced composite material prepared by the above process has excellent comprehensive mechanical properties and can meet the requirements of general industrial use. Please see attached table 1 for specific performance test values.

Embodiment 3

[0029] 3 parts by mass of polyethersulfone (PES) was dissolved in 50 parts by mass of a mixed solvent of N,N dimethylacetamide (DMAc) and acetone, wherein the mass ratio of DMAc to acetone was 4:1. Add 1 mass part of polyphenylene sulfide powder into the PES-DMAc solution, mechanically stir at a low stirring rate for 60Min, impregnate the prepreg made of continuous carbon fiber, and perform the following processing according to the processing technology of hot pressing :

[0030] Cold pressing: 6MPa / room temperature / 40Min+hot pressing: 12MPa / 200°C / 40Min+11MPa / 290°C / 80Min+cooling: 80°C / water cooling+pressure release and demoulding. The continuous carbon fiber reinforced composite material prepared by the above process has excellent comprehensive mechanical properties and can meet the requirements of general industrial use. Please see attached table 1 for specific performance test values.

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

No PUM Login to view more

Abstract

The invention discloses a method for preparing a continuous carbon fiber-reinforced thermoplastic resin composite material, which comprises the following steps: mixing N,N-dimethylacetamide and acetone at the mass ratio of (1-5):1 to obtain mixed solvent; dissolving 1-5 parts by weight of polyether sulfone into 30-60 parts by weight of mixed solvent to be fully dissolved so as to obtain polyethersulfone solution; adding 0.5-2.5 parts by weight of indissolvable thermoplasticity powdered resin into the polyether sulfone solution by mechanical stirring or ultrasonic vibration to obtain suspension with stable performance, wherein the added thermoplasticity resin powder is evenly distributed; dipping the continuous carbon fiber into mixed thermoplasticity resin suspension at the temperature of 18-22DEG C to obtain prepreg; and carrying out hot pressing and shaping to the prepreg to obtain a product. The method for preparing the continuous carbon fiber-reinforced thermoplastic resin composite material has the advantages of low cost, simple technology and small solvent toxicity.

Description

technical field [0001] The invention belongs to a method for preparing a resin composite material, in particular to a method for preparing a continuous carbon fiber reinforced thermoplastic resin composite material. Background technique [0002] In recent years, continuous carbon fiber reinforced high-performance thermoplastic resin composites have been widely used in high-end aerospace industry and conventional civil manufacturing. In the process of preparing thermoplastic composite prepregs, since most thermoplastic resins are difficult to dissolve in common organic solvents at room temperature, it is inevitable to use complex powder impregnation methods and melt impregnation methods. In view of the above problems, the present invention provides a method for preparing a prepreg using a conventional liquid-phase impregnation method combined with a suspension. [0003] In the research of liquid phase impregnation process, CN1603363A reported that the prepreg of continuous f...

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 Applications(China)
IPC IPC(8): C08J5/04C08L81/06C08K7/06C08L81/02C08L61/16B29C70/40B29C70/54
Inventor 李开喜王健
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap