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Carbon fiber felt-carbon fiber cloth composite material and preparation method thereof

A technology of carbon fiber felt and carbon fiber cloth, which is applied in the field of new polymer materials, can solve problems such as limited binding force, carbon fiber surface damage, and short performance boards, and achieve the effect of improving stretching and reducing costs

Active Publication Date: 2020-01-10
HAIAN INST OF HIGH TECH RES NANJING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the preparation process of traditional carbon fiber composite materials, the surface of carbon fiber needs to be treated. Generally, the surface activity is increased by means of surface grafting or catalytic activation, thereby improving the binding force with the cured resin. However, the disadvantage of this method is that the activation means It will cause certain damage to the surface of carbon fiber, and the ability to improve the bonding force between carbon fibers, especially the bonding force between carbon cloths is very limited. Therefore, the interlayer bonding force of carbon fiber composite materials has always been its shortcoming.

Method used

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  • Carbon fiber felt-carbon fiber cloth composite material and preparation method thereof
  • Carbon fiber felt-carbon fiber cloth composite material and preparation method thereof
  • Carbon fiber felt-carbon fiber cloth composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Activate the carbon fiber felt by steam at 700°C for 80 minutes; 2) Fully impregnate the activated carbon fiber felt in the epoxy resin curing system. In the curing system, EP-12: diaminodiphenylmethane: 2,4,6- Tris(dimethylaminomethyl)phenol=100:10:20, and ultrasonicated with a 200W ultrasonic generator for 10 minutes; 3) Laminate fully impregnated carbon fiber felt and carbon fiber cloth, with a lamination thickness of 3mm, and press through rollers to obtain a pre- Impregnated cloth; 4) Put the pre-impregnated cloth into the vacuum infusion equipment, then vacuumize, pour into the epoxy resin curing system and heat to 90°C to cure for 4 hours, and demould to obtain the carbon fiber felt-carbon fiber cloth composite material.

[0023] Mechanical properties of carbon fiber composites:

[0024]

Embodiment 2

[0026] 1) Activate the carbon fiber felt by steam at 800°C for 60 minutes; 2) Fully impregnate the activated carbon fiber felt in the epoxy resin curing system. In the curing system, EP-13: diaminodiphenylmethane: 2,4,6- Tris(dimethylaminomethyl)phenol=100:15:25, and ultrasonicated with a 300W ultrasonic generator for 15 minutes; 3) Laminate the fully impregnated carbon fiber felt and carbon fiber cloth with a lamination thickness of 3mm, and press through a pressure roller to obtain a pre- Impregnated cloth; 4) Put the pre-impregnated cloth into the vacuum infusion equipment, then vacuumize it, pour it into the epoxy resin curing system and heat it to 120°C for 3 hours, and demould to obtain the carbon fiber felt-carbon fiber cloth composite material.

[0027] Mechanical properties of carbon fiber composites:

[0028]

Embodiment 3

[0030] 1) Activate the carbon fiber felt by steam at 900°C for 50 minutes; 2) Fully impregnate the activated carbon fiber felt in the epoxy resin curing system. In the curing system, EP-16: diaminodiphenylmethane: 2,4,6- Tris(dimethylaminomethyl)phenol=100:20:40, and ultrasonicated with 400W ultrasonic generator for 20min; 3) Laminate the fully impregnated carbon fiber felt and carbon fiber cloth, with a lamination thickness of 3mm, and press through rollers to obtain the pre- Impregnated cloth; 4) Put the pre-impregnated cloth into the vacuum infusion equipment, then vacuumize, pour into the epoxy resin curing system and heat to 150°C to cure for 2 hours, and demould to obtain the carbon fiber felt-carbon fiber cloth composite material.

[0031] Mechanical properties of carbon fiber composites:

[0032]

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PUM

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Abstract

The invention discloses a high interlayer binding force carbon fiber felt-carbon fiber fabric composite material and a preparation method thereof and belongs to the field of preparation of carbon fiber composite materials. The preparation method comprises 1) activating a carbon fiber felt through water vapor, 2) fully dipping the activated carbon fiber felt in an epoxy resin curing system, 3) stacking the fully impregnated carbon fiber felt and a carbon fiber cloth, and rolling the carbon fiber felt and carbon fiber cloth through a roller to obtain a prepreg fabric, and 4) putting the prepreg fabric into a vacuum infusion device, and carrying out vacuum pumping, filling with the epoxy resin curing system, heating curing and demolding to obtain the carbon fiber felt-carbon fiber fabric composite material. The high activity carbon fiber felt replaces the carbon fiber activation process in the traditional process so that tensile and shear strength of the carbon fiber material are comprehensively improved and a carbon fiber composite material cost is reduced.

Description

technical field [0001] The application belongs to the field of new polymer materials, and in particular relates to a carbon fiber felt-carbon fiber cloth composite material and a preparation method thereof. Background technique [0002] Carbon fiber (CF for short) is a new type of fiber material with high strength and high modulus fibers with a carbon content of more than 95%. Carbon fiber has the characteristics of corrosion resistance, high strength, high modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, and good fatigue resistance. Carbon fiber composite materials inherit the excellent properties of carbon fiber. Both national defense and civilian use are important materials. [0003] In the preparation process of traditional carbon fiber composite materials, the surface of carbon fiber needs to be treated. Generally, the surface activity is increased by means of surface grafting or catalytic activa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K9/02C08K7/06C08J5/24B29C70/44B29B15/10
CPCB29B15/10B29C70/443C08J5/24C08J2363/00C08K7/06C08K9/02C08K2201/014C08L63/00
Inventor 陆洪彬唐伟朱强牛志强
Owner HAIAN INST OF HIGH TECH RES NANJING UNIV