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

A high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite preform and its preparation method

A fiber-reinforced and composite material technology, applied in high-impact discontinuous fiber-reinforced thermoplastic composite preforms and its preparation, high-strength fields, can solve the problem of insufficient strength and impact resistance of reinforced thermoplastic composite materials, obvious anisotropy, etc. problems, to achieve high impact strength, good isotropy, and good uniformity

Active Publication Date: 2022-06-21
GUANGDONG IND TECHN COLLEGE
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The primary purpose of the present invention is to provide a method for preparing a high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite material prefabricated body, aiming to solve the insufficient strength and impact resistance and obvious anisotropy of discontinuous fiber-reinforced thermoplastic composite materials The problem

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 high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite preform and its preparation method
  • A high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite preform and its preparation method
  • A high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite preform and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The present invention is a method for preparing a high-strength, high-impact non-continuous fiber-reinforced thermoplastic composite material preform, which is suitable for thermoplastics such as PE resin, PP resin, PA resin, PC resin, PBT, PMMA, PPS, etc. The specific preparation steps are as follows :

[0033] 1. Preparation of high-strength, high-impact discontinuous fiber-reinforced PP composite preforms

[0034] ①Compound PP resin, auxiliary agent and continuous fiber (PP resin is 28-65wt%, auxiliary agent is 0.1-5wt%, continuous fiber is 30-70wt%) by melt impregnation to form a continuous continuous fiber with a thickness of 0.1-0.2mm Fiber-reinforced thermoplastic sheet (CFRTP), the melt impregnation temperature is set at 230-280 degrees Celsius;

[0035] ②Slit the continuous sheet into small sheets with length and width of (10-50mm)×(5-10mm);

[0036] ③ Mix the cut small sheets evenly to maintain the isotropy of fiber distribution;

[0037] ④ Use infrared or ...

Embodiment 1

[0063] A high-strength, high-impact non-continuous fiber-reinforced thermoplastic composite material preform, the preparation steps are as follows:

[0064] (1) Composite PP resin, glass fiber, carbon fiber and additives (antioxidant and compatibilizer) into GF / PP prepreg sheet and CF / PP continuous sheet with a thickness of 0.2 mm by melt impregnation; wherein The PP resin content is 38wt%, the carbon fiber content is 40wt%, the glass fiber content is 20wt%, the antioxidant content is 0.2wt%, and the compatibilizer content is 1.8wt%;

[0065] (2) The continuous sheet is cut into small sheets with a width of 5 mm and a length of 10 mm, 15 mm, 35 mm and 50 mm; the ratio of the small sheets with lengths of 10 mm, 15 mm, 35 mm and 50 mm is 1:2: 3:4;

[0066] (3) Mixing the cut small sheets uniformly to maintain the isotropy of fiber distribution;

[0067] (4) The small sheet after mixing is melted by rapid infrared heating;

[0068] (5) Then carry out mixing for 1 to 5 minutes ...

Embodiment 2

[0076] A high-strength, high-impact non-continuous fiber-reinforced thermoplastic composite material preform, the preparation steps are as follows:

[0077] (1) Composite PP resin, glass fiber, carbon fiber and additives (antioxidant and compatibilizer) into GF / PP prepreg sheet and CF / PP continuous sheet with a thickness of 0.2 mm by melt impregnation; wherein The PP resin content is 38wt%, the carbon fiber content is 40wt%, the glass fiber content is 20wt%, the antioxidant content is 0.2wt%, and the compatibilizer content is 1.8wt%;

[0078] (2) The continuous sheet is cut into small sheets with a width of 5mm and a length of 10mm, 15mm, 35mm and 50mm; the ratio of the small sheets with lengths of 10mm, 15mm, 35mm and 50mm is 1:2 :3:4;

[0079] (3) Mixing the cut small sheets uniformly to maintain the isotropy of fiber distribution;

[0080] (4) The small sheet after mixing is melted by rapid infrared heating;

[0081] (5) Then carry out mixing for 1 to 5 minutes through l...

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
tensile strengthaaaaaaaaaa
impact strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-strength, high-impact discontinuous fiber-reinforced thermoplastic composite material preform and a preparation method thereof. The preparation method comprises the following steps: compounding thermoplastic resin, additives and continuous fibers into a continuous fiber reinforced thermoplastic sheet with a thickness of 0.1-0.2 mm by means of melt impregnation; cutting the continuous sheet into length and width dimensions of ( 10 ~ 50mm) × (5 ~ 10mm) small pieces; mix the cut small pieces evenly to maintain the isotropy of fiber distribution; heat the mixed small pieces to melt; and then pass the low shear mixing The refining equipment is used for kneading to make the fibers reach isotropic distribution; the melt of the compound in the molten state is cold-pressed into a sheet with a thickness of 1-5 mm and a certain width. Compared with the existing preparation method, the discontinuous fiber reinforced thermoplastic composite material prepared by the invention has better isotropy and higher impact strength.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a high-strength, high-impact non-continuous fiber-reinforced thermoplastic composite material preform and a preparation method thereof. Background technique [0002] There are two main categories of fiber reinforced thermoplastic composites: continuous fiber reinforced thermoplastic composites (CFRTP) and discontinuous fiber reinforced thermoplastic composites; discontinuous fiber reinforced thermoplastic composites are divided into three categories: short fiber reinforced thermoplastic composites (SFT ), long fiber reinforced thermoplastic composites (LFT) and fiber mat reinforced thermoplastic composites (GMT). [0003] Continuous fiber reinforced thermoplastic composites (CFRTP) have strength and impact resistance comparable to metals, but have the disadvantages of poor molding processability and low freedom of product structure design; discontinuous fiber reinforced t...

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): B29D7/01
CPCB29D7/01
Inventor 陈大华陈金伟何亮喻慧文庄文柳刘青山李建刚
Owner GUANGDONG IND TECHN COLLEGE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com