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Preparation method of double-layer oxide modified carbon fiber reinforced composite material

A carbon fiber material and fiber reinforcement technology, which is applied in the field of preparation of double-layer oxide-modified carbon fiber surface-modified composite materials, can solve the problems of easy generation of impact and delamination, and achieve the improvement of impact, alleviation of delamination, and improvement of The effect of mechanical properties

Pending Publication Date: 2020-03-10
天津中科先进技术产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the preparation of honeycomb sandwich composite materials mostly adopts the method of bonding the carbon fiber plate and the honeycomb sandwich, but this method is prone to delamination during impact or stretching. For this delamination defect, No effective solution has yet been produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The aluminum nitrate powder used in the present embodiment is more than 99.8% aluminum nitrate powder mixed with a little aluminum hydroxide, aluminum oxide etc.; Orthoethyl silicate (TEOS) concentration is more than 95%, ethanol (C2H5OH) concentration is 70%, The concentration of ammonia water (NH3OH) is 70%, and the above basic chemical materials are pure substances for chemical analysis.

[0046] (1) Prepare alumina modified prefabricated colloid: dissolve aluminum nitrate powder in distilled water, stir to obtain aluminum nitrate solution; then add ammonia water dropwise to aluminum nitrate solution, and stir at a rotating speed of 1000r / min to obtain a white colloid solution, namely Prefabricated colloids for alumina modification;

[0047] (2) Carbon fiber surface pretreatment: Soak carbon fiber filaments or carbon fiber cloth in impurity remover for surface cleaning, then dry and high-temperature oxidation treatment for the cleaned carbon fiber filaments or carbon...

Embodiment 2

[0054] The aluminum nitrate powder used in the present embodiment is that more than 99.8% aluminum nitrate powder is mixed with a little aluminum hydroxide, aluminum oxide etc.; Orthoethyl silicate (TEOS) concentration is more than 95%, ethanol (C2H5OH) concentration is 80%, The concentration of ammonia water (NH3OH) is 80%, and the above basic chemical materials are pure substances for chemical analysis.

[0055] (1) Prepare alumina modified prefabricated colloid: dissolve aluminum nitrate powder in distilled water, stir to obtain aluminum nitrate solution; then add ammonia water dropwise to aluminum nitrate solution, and stir at a rotating speed of 1500r / min to obtain a white colloid solution, namely Prefabricated colloids for alumina modification;

[0056] (2) Carbon fiber surface pretreatment: Soak carbon fiber filaments or carbon fiber cloth in impurity remover for surface cleaning, then dry and high-temperature oxidation treatment for the cleaned carbon fiber filaments o...

Embodiment 3

[0063] The aluminum nitrate powder used in the present embodiment is more than 99.8% aluminum nitrate powder mixed with a little aluminum hydroxide, aluminum oxide etc.; Orthoethyl silicate (TEOS) concentration is more than 95%, ethanol (C H OH) concentration is 90%, The concentration of ammonia water (NH3OH) is 90%, and the above basic chemical materials are pure substances for chemical analysis.

[0064] (1) Preparation of alumina modified prefabricated colloid: dissolve aluminum nitrate powder in distilled water, stir to obtain aluminum nitrate solution; then add ammonia water dropwise to aluminum nitrate solution, stir at a speed of 1000-2000r / min to obtain a white colloid solution , which is alumina modified prefabricated colloid;

[0065] (2) Carbon fiber surface pretreatment: Soak carbon fiber filaments or carbon fiber cloth in a decontamination agent for surface cleaning, then dry and high-temperature oxidation treatment the cleaned carbon fiber filaments or carbon fib...

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PUM

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Abstract

The invention provides a preparation method of a double-layer oxide modified carbon fiber reinforced composite material, wherein the surface of carbon fiber filaments is coated with a SiO2-blended Al2O3 coating sizing agent, so that a layer of oxide thin film is formed on the surface; finally an epoxy resin substrate is introduced by means of a RTM process to infiltrate the epoxy resin onto the surface of the carbon fiber cloth, then the epoxy resin is solidified and shaped to manufacture the carbon fiber reinforced epoxy resin based composite material, of which shear performance is improved by 16% and anti-impact performance is improved by 27%.

Description

technical field [0001] The invention belongs to the technical field of surface modification of composite materials, and relates to a preparation method of a double-layer oxide modified carbon fiber surface modified composite material. Background technique [0002] Honeycomb aluminum sandwich composite material refers to a layered structure composite material composed of aluminum panels (skins) and honeycomb core materials. At present, because the honeycomb sandwich structure is a light-weight structural material with excellent characteristics such as high specific strength, high specific modulus, good fatigue resistance and smooth surface, it has great application prospects in the civil and aerospace fields. [0003] Although the honeycomb aluminum sandwich composite material has many advantages mentioned above, there are still many problems in the preparation process of the composite material with carbon fiber as reinforcement, such as the interface wettability between the ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/02C08K7/00C08K7/06C08J5/06
CPCC08J5/06C08K9/02C08K7/00C08K7/06C08J2363/00C08L63/00
Inventor 曹晓燕
Owner 天津中科先进技术产业有限公司
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