Thermoplastic light-weight composite material and preparation method thereof

A composite material and lightweight technology, applied in the field of composite materials, can solve the problems of compatibility and dispersibility, reduce the original strength of the matrix, and have a large difference in polarity, so as to improve the strength and firmness, and improve the mechanical properties. , the effect of broad market prospects

Inactive Publication Date: 2018-04-13
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the mechanical properties of composite materials, fibers, such as carbon fibers and plant fibers, are often added to the matrix to enhance the strength of the matrix. Since the polyimide matrix is ​​a fusion of organic materials and inorganic fibers, its polarity is quite different. There will be problems with the compatibility and dispersion of the matrix, but it will reduce the original strength of the matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The thermoplastic lightweight composite material of this embodiment includes the following components in parts by weight: 20 parts of modified carbon fiber, 84 parts of polyimide powder, 10 parts of modified glass fiber, 10 parts of heat stabilizer and 15 parts of antioxidant.

[0024] (1) The preparation method of the above-mentioned modified carbon fiber is: the carbon fiber is cleaned to remove impurities; the graphene and the silane coupling agent after the acidification treatment of the concentrated sulfuric acid and the concentrated nitric acid are carried out grafting reaction, and the modified graphene is obtained, Mix modified graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent in a ratio of 3:55:10 by weight to prepare a sizing agent; place the carbon fiber Modified carbon fibers were prepared by irradiating the sizing agent with radiation at a dose of 240 kGy under an inert atmosphere.

[0025] Preparation of modified graphene compris...

Embodiment 2

[0031] The thermoplastic lightweight composite material of this embodiment includes the following components in parts by weight: 30 parts of modified carbon fiber, 80 parts of polyimide powder, 15 parts of modified glass fiber, 12 parts of heat stabilizer and 20 parts of antioxidant.

[0032] (1) The preparation method of the above-mentioned modified carbon fiber is: the carbon fiber is cleaned to remove impurities; the graphene and the silane coupling agent after the acidification treatment of the concentrated sulfuric acid and the concentrated nitric acid are carried out grafting reaction, and the modified graphene is obtained, Mix modified graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent in a ratio of 3:55:10 by weight to prepare a sizing agent; place the carbon fiber Modified carbon fibers were prepared by irradiating the sizing agent with radiation at a dose of 240 kGy under an inert atmosphere.

[0033]Preparation of modified graphene comprise...

Embodiment 3

[0039] The thermoplastic lightweight composite material of this embodiment includes the following components in parts by weight: 25 parts of modified carbon fiber, 82 parts of polyimide powder, 12 parts of modified glass fiber, 11 parts of heat stabilizer and 28 parts of antioxidant.

[0040] (1) The preparation method of the above-mentioned modified carbon fiber is: the carbon fiber is cleaned to remove impurities; the graphene and the silane coupling agent after the acidification treatment of the concentrated sulfuric acid and the concentrated nitric acid are carried out grafting reaction, and the modified graphene is obtained, Mix modified graphene, 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate and curing agent in a ratio of 3:55:10 by weight to prepare a sizing agent; place the carbon fiber Modified carbon fibers were prepared by irradiating the sizing agent with radiation at a dose of 240 kGy under an inert atmosphere.

[0041] Preparation of modified graphene compris...

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PUM

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Abstract

The invention discloses a thermoplastic light-weight composite material and a preparation method thereof, and belongs to the technical field of composite materials. The thermoplastic light-weight composite material comprises the following components in parts by weight: 20-30 parts of modified carbon fiber, 80-84 parts of polyimide powder, 10-15 parts of modified glass fiber, 10-12 parts of a heatstabilizer and 15-20 parts of an antioxidant. The thermoplastic light-weight composite material comprises substances with specific formula contents, and under the mutual cooperation of the substances,the interfacial compatibility, the adhesive force, the strength and the firmness of the prepared thermoplastic light-weight composite material are greatly improved; in addition, due to use of polyimide which is lighter than a metal material in mass, the whole composite material is light in weight; and therefore, the thermoplastic light-weight composite material has a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a thermoplastic lightweight composite material. Background technique [0002] The application of advanced composite materials in aviation and aerospace industry shows unique advantages and potentials, from epoxy resin, thermoplastic resin, isocyanate resin to bismaleimide resin, polyimide resin development process. Polyimide has excellent comprehensive properties, such as excellent heat resistance, low temperature resistance, solvent resistance, self-lubrication and flame retardancy, and is widely used. [0003] Due to the increasingly harsh application environment of materials, the performance requirements for composite materials have also increased, especially the mechanical properties of materials. Although the current polyimide-based composite materials can meet the heat resistance requirements of the product, the strength needs to be further improved. During th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K13/06C08K9/02C08K9/04C08K9/06C08K9/00C08K7/06C08K7/14C08K3/04
Inventor 陈宝书赵天宝李正秋廖力
Owner XIHUA UNIV
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