Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for improving interface properties of resin matrix and carbon fiber

A technology of resin matrix and epoxy resin matrix, which is applied in the direction of carbon fiber, fiber treatment, fiber type, etc., can solve the problems of complex preparation process and achieve the effect of simple preparation process, mild reaction conditions and easy access to raw materials

Active Publication Date: 2022-07-12
SICHUAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the graphene oxide / carbon fiber composite reinforcement can improve the interfacial properties between carbon fiber and epoxy resin, its preparation method needs to adopt the diazotization electrochemical grafting method, and the preparation process is complicated. Moreover, the graphene oxide The interfacial shear strength (IFSS) of the epoxy resin composite material made of carbon fiber composite reinforcement is only 61.19MPa, which needs to be further improved

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 improving interface properties of resin matrix and carbon fiber
  • Method for improving interface properties of resin matrix and carbon fiber
  • Method for improving interface properties of resin matrix and carbon fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1. Preparation of GO / CF reinforced epoxy composite material of the present invention

[0051] Step 1: Preparation of graphene oxide modified carbon fibers

[0052] The CFs were refluxed in acetone at 80 °C for 48 h, then washed with acetone, and dried in a vacuum oven at 80 °C for 12 h to remove residual acetone and contaminants.

[0053] In a 200 mL beaker filled with 100 mL of deionized water, 6 mL of a GO aqueous suspension with a lateral dimension of 200 nm (where the GO concentration was 5 mg / mL) was added and sonicated (ultrasonic power: 600 W) for 30 min to separate GO sheets. Then 0.075g CMC was added to the above solution and mixed uniformly to obtain a sizing agent, CFs were immersed in the sizing agent for sizing for 15 minutes, and dried in an oven at 80 °C for 24 hours to obtain a carbon fiber sample after the introduction of GO, which was named as M40 J / GO-200nm.

[0054] Step 2: Preparing the Composite

[0055] The composite material was prepa...

Embodiment 2

[0056] Example 2. Preparation of the GO / CF reinforced epoxy composite material of the present invention

[0057] Step 1: Preparation of graphene oxide modified carbon fibers

[0058] Refer to the method of step 1 of Example 1, except that 6 mL of GO aqueous suspension with a lateral size of 200 nm (where the GO concentration is 5 mg / mL) is replaced with 10 mL of a 1 μm lateral size of the GO aqueous suspension (where the GO concentration is 5 mg). / mL), the carbon fiber sample after GO was prepared and named as M40 J / GO-1 μm.

[0059] Step 2: Preparing the Composite

[0060] Referring to the method of step 2 of Example 1, the only difference is that M40 J / GO-200nm carbon fiber is replaced with M40 J / GO-1 μm carbon fiber to obtain the composite material of the present invention: M40 J / GO-1 μm-epoxy composite material.

experiment example 1

[0067] Experimental example 1. Structure and morphology characterization of graphene oxide sheets with different lateral dimensions

[0068] 1. Experimental method

[0069] Test samples: 5 mg / mL GO aqueous suspension with a lateral size of 200 nm after sonication for 30 minutes, and 5 mg / mL GO aqueous suspension with a lateral size of 1 μm after sonication for 30 minutes.

[0070] Detection method: transmission electron microscope (TEM), atomic force microscope (AFM).

[0071] 2. Experimental results

[0072] The result is as figure 2 shown. from figure 2 (a) and figure 2 (b) It can be seen that the 5 mg / mL GO aqueous suspension with a lateral size of 200 nm and a 5 mg / mL GO aqueous suspension with a lateral size of 1 μm after ultrasonic treatment are transparent, uniform and stable, and the color of the liquid is yellow (color mainly determined by the concentration of GO in solution).

[0073] from figure 2 (a') and figure 2 (b') It can be seen that GO sheets wi...

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
sizeaaaaaaaaaa
shear strengthaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for improving the interface performance between a resin matrix and carbon fiber. The method adopts graphene oxide to modify the surface interface of carbon fiber, thereby obtaining carbon fiber reinforced resin matrix composite material with high interface shear strength and interlaminar shear strength, which belongs to field of composite materials. The carbon fiber reinforced resin-based composite material is prepared by using graphene oxide modified carbon fiber, a resin matrix and a curing agent as raw materials, and the graphene oxide modified carbon fiber is a graphene oxide modified carbon fiber with a lateral dimension of 50-50000 nm owned. The method has outstanding advantages in enhancing the interface properties of carbon fiber composite materials, and can meet the high temperature molding requirements of high heat-resistant resins, and has important application prospects in the preparation of various high-performance resin-based composite materials. The graphene oxide-modified carbon fiber-reinforced resin matrix composite material of the present invention has excellent interlaminar shear performance, and can be applied to fields such as aerospace, rail transit, automobiles, energy and ships.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for improving the interface properties of a resin matrix and carbon fibers, and a carbon fiber reinforced resin matrix composite material with high interface shear strength and interlaminar shear strength obtained by the method. Background technique [0002] Carbon fiber reinforced resin matrix composites (CFRPs) have been widely used in aerospace, automotive and marine industries due to their light weight, high specific strength, high specific modulus, good corrosion resistance, strong designability, and easy processing. Widespread concern. The resin matrix used in carbon fiber reinforced resin matrix composites is divided into two categories: thermosetting resins and thermoplastic resins, currently mainly thermosetting resins. Among thermosetting resins, carbon fiber reinforced epoxy resin matrix composites have become the most widely used CFRPs in recen...

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): D06M11/74C08J5/06C08K9/02C08K7/06C08L63/02D06M101/40
CPCD06M11/74C08J5/06D06M2101/40D06M2200/40C08J2363/02C08K9/02C08K7/06
Inventor 邹华维邱宝伟梁梅张雪琴孙通
Owner SICHUAN UNIV
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