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Preparation method of high-strength and high-rigidity wave-absorbing composite material

A composite material and high rigidity technology, which is applied in the field of preparation of high-strength and high-rigidity wave-absorbing composite materials, can solve the problems of complex preparation process, difficult to apply in important fields, high density, etc., and achieves overcoming low strength, excellent mechanical properties and size Stability and wide application prospects

Pending Publication Date: 2021-12-07
江苏集萃复合材料装备研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention avoids the problems of low strength and high density of wave-absorbing composite materials, difficulty in application in important fields, complex preparation process, and difficulty in forming large-scale composite material components; at the same time, it realizes the regulation of different electromagnetic properties by combining the types and contents of nanoparticles , to achieve the purpose of adjusting the microwave-absorbing properties of polymer-based composites

Method used

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  • Preparation method of high-strength and high-rigidity wave-absorbing composite material
  • Preparation method of high-strength and high-rigidity wave-absorbing composite material

Examples

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Embodiment 1

[0026] A method for preparing a high-strength and high-rigidity wave-absorbing composite material, the composite material comprising epoxy resin, carbon fibers and carbon nanotubes; the preparation method of the composite material comprises the following steps:

[0027] (1) Stir 10kg of bisphenol A type 128 and 1kg of carbon nanotubes with a particle size of 100 nanometers at 70°C, after mixing completely, cool to normal temperature to obtain mixed solution A;

[0028] (2) Add 2kg of diurea Ur500 to the mixed solution A obtained in step (1), and stir evenly at normal temperature to obtain the mixed solution B;

[0029] (3) Process and produce the mixed solution B obtained in step (2) and the carbon fiber material through prepreg equipment to obtain a carbon fiber prepreg with a thickness of 0.15mm; the resin content is 30%; the carbon fiber is T300 grade;

[0030] (4) Carry out [0 / 90] layering of the carbon fiber prepreg obtained in step (3), and solidify by using the autoclav...

Embodiment 2

[0032] A method for preparing a high-strength and high-rigidity wave-absorbing composite material, the composite material comprising epoxy resin, carbon fibers and carbon nanotubes; the preparation method of the composite material comprises the following steps:

[0033] (1) Stir 10kg of bisphenol A type 128 and 2kg of carbon nanotubes with a particle size of 100 nanometers at 70°C, after mixing completely, cool to normal temperature to obtain mixed solution A;

[0034] (2) Add 2kg of diurea Ur500 to the mixed solution A obtained in step (1), and stir evenly at normal temperature to obtain the mixed solution B;

[0035] (3) Process and produce the mixed solution B obtained in step (2) and the carbon fiber material through prepreg equipment to obtain a carbon fiber prepreg with a thickness of 0.15mm; the resin content is 30%; the carbon fiber is T300 grade;

[0036] (4) Carry out [0 / 90] layering of the carbon fiber prepreg obtained in step (3), and solidify by using the autoclav...

Embodiment 3

[0038] A method for preparing a high-strength and high-rigidity wave-absorbing composite material, the composite material comprising epoxy resin, carbon fibers and carbon nanotubes; the preparation method of the composite material comprises the following steps:

[0039] (1) Stir 10kg of bisphenol A type 128 and 1kg of carbon nanotubes with a particle size of 100 nanometers at 70°C, after mixing completely, cool to normal temperature to obtain mixed solution A;

[0040] (2) Add 2kg of dicyandiamide in the mixed solution A that step (1) obtains, after stirring at normal temperature, obtain mixed solution B;

[0041] (3) Process and produce the mixed liquid B obtained in step (2) and the carbon fiber material through prepreg equipment to obtain a carbon fiber prepreg with a thickness of 0.2mm; the resin content is 30%; the carbon fiber is T300 grade;

[0042] (4) Carry out [0 / 90] layering of the carbon fiber prepreg obtained in step (3), and solidify by using the autoclave proces...

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Abstract

The invention discloses a preparation method of a high-strength and high-rigidity wave-absorbing composite material, which comprises the steps of (1) stirring epoxy resin and nanoparticles at the temperature of 50-70 DEG C, and cooling to normal temperature after complete mixing to obtain a mixed solution A; (2) adding a curing agent into the mixed solution A obtained in the step (1), and uniformly stirring at normal temperature to obtain a mixed solution B; (3) processing and producing the mixed solution B obtained in the step (2) and a carbon fiber material through prepreg equipment to prepare a carbon fiber prepreg with the thickness of 0.5-2mm; and (4) stacking the carbon fiber prepreg obtained in the step (3), and curing through an autoclave to obtain the high-strength and high-rigidity wave-absorbing composite material. The problems that the wave-absorbing composite material is low in strength, large in density, difficult to apply to important fields, complex in preparation process, difficult to form large-size composite material components and the like are effectively solved.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a preparation method of a high-strength and high-rigidity wave-absorbing composite material. Background technique [0002] Polymer matrix composites have become a rapidly developing material system in the military field due to their excellent mechanical properties. With the improvement of radar reconnaissance technology, the development of wave-absorbing polymer-based composite materials has become the key to improving the survivability of weapons and equipment. In the civilian field, with the rapid development of electronic technology, communication networks and electronic equipment have become more and more closely related to our related, but it will inevitably produce electromagnetic waves. Excessive electromagnetic radiation pollution will not only adversely affect electronic products, but also potentially affect people's health. Therefore, the development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L63/02C08K3/04C08K7/06
CPCC08J5/24C08J2363/00C08K7/06C08K3/041C08K2201/011C08K3/04C08K2201/005
Inventor 杨智明李宏何庆浩叶林
Owner 江苏集萃复合材料装备研究所有限公司