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A kind of dual functional layer polymer composite material and preparation method thereof

A dual-function, composite material technology, applied in the field of polymer composite materials, can solve the problems of inability to protect the wiring harness system, lack of electromagnetic wave shielding, and limit the application of polymer shape memory materials, so as to improve the shielding effect and meet the electromagnetic shielding requirements. The effect of excellent heat and humidity resistance and salt spray resistance

Active Publication Date: 2022-04-12
广东粤港澳大湾区黄埔材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, traditional polymer shape memory materials do not have the ability to shield electromagnetic waves, and cannot protect wire harness systems with high electromagnetic sensitivity. This defect greatly limits the application of polymer shape memory materials, especially in cable protection.

Method used

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  • A kind of dual functional layer polymer composite material and preparation method thereof
  • A kind of dual functional layer polymer composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, 0.5 g of graphene oxide (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNGO-10) was dispersed in 50 g of deionized water, ultrasonicated for 2 h to form a uniform dispersion, and the pH was adjusted to 5 with hydrochloric acid, and then Add 0.05g of γ-aminopropyltriethoxysilane into 0.25g of ethanol to make it dissolve with stirring, add it to the above dispersion liquid, and react at 70°C for 6h. Cool to room temperature, centrifuge and wash 5 times with deionized water to remove unreacted coupling agent. The chemically modified graphene oxide was obtained by freeze-drying at a pressure of 10 Pa and a temperature of -55° C. for 48 hours.

[0028] Add 0.5 g of carboxylated single-walled carbon nanotubes (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNSSC) and 50 g of thionyl chloride solvent into the reaction kettle, ultrasonicate at room temperature for 3 h, and then react at 90 ° C for 24 h. After room tem...

Embodiment 2

[0032] First, disperse 0.5g of graphene oxide (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNGO-10) in 250g deionized water, ultrasonic 0.5h to form a uniform dispersion, adjust the pH to 4 with hydrochloric acid, and then Add 0.025g of γ-aminopropyltriethoxysilane into 0.25g of ethanol to stir and dissolve it, add it to the above dispersion liquid, and react at 25°C for 24h. Cool to room temperature, centrifuge and wash 3 times with deionized water to remove unreacted coupling agent. The chemically modified graphene oxide was obtained by freeze-drying at a pressure of 10 Pa and a temperature of -55° C. for 24 hours.

[0033] Add 0.5 g of carboxylated double-walled carbon nanotubes (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNDC) and 100 g of thionyl chloride solvent into the reaction kettle, ultrasonicate at room temperature for 1 h, then react at 60 ° C for 12 h, and drop to After room temperature, filter, wash wit...

Embodiment 3

[0037] First, 0.5 g of graphene oxide (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNGO-10) was dispersed in 50 g of deionized water, ultrasonicated for 2 h to form a uniform dispersion, and the pH was adjusted to 5 with hydrochloric acid, and then Add 0.05g of γ-aminopropyltriethoxysilane into 0.25g of ethanol to make it dissolve with stirring, add it to the above dispersion liquid, and react at 70°C for 6h. Cool to room temperature, centrifuge and wash 5 times with deionized water to remove unreacted coupling agent. The chemically modified graphene oxide was obtained by freeze-drying at a pressure of 10 Pa and a temperature of -55° C. for 48 hours.

[0038] Add 0.5 g of carboxylated multi-walled carbon nanotubes (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, brand: TNSMC1) and 50 g of thionyl chloride solvent into the reaction kettle, ultrasonicate at room temperature for 3 h, then react at 90 ° C for 24 h, down to After room...

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Abstract

The invention belongs to the field of polymer composite materials, and specifically discloses a dual-functional layer polymer composite material and a preparation method thereof. Firstly, chemically modified graphene oxide containing amino groups was prepared by coupling reaction and carboxylated carbon nanotubes were chlorinated, and then reduced graphene oxide grafted carbon nanotubes were prepared by amidation reaction and reduction reaction. Finally, the Janus structure composite material was formed by solution blending method and casting method, and the gravity of reduced graphene oxide grafted carbon nanotubes was used to slowly remove the solvent. One layer of the composite material of the present invention is a shape-memory functional layer, and the other layer is an electromagnetic shielding functional layer. The surface resistivity of the two-layer structure differs by 4-5 orders of magnitude. The shape-memory functional layer has an antistatic effect, and the electromagnetic shielding functional layer improves excellently. Excellent shielding effect; at the same time, the material has excellent aging resistance, heat resistance and salt spray resistance, and has application prospects in harsh environments such as heat and humidity and salt spray.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a Janus structure electromagnetic shielding and shape memory dual-functional polymer composite material and a preparation method thereof. Background technique [0002] In 1959, A.Charlesby and his collaborator S.H.Pinner applied for the first patent right of PE heat-shrinkable tubing for Raychem, and polymer shape memory materials were widely concerned. Polymer shape memory materials have the advantages of easy processing, large deformation, adjustable transition temperature, and corrosion resistance. They have been widely used in biomedicine, smart fabrics, sensors, and cable protection. [0003] However, traditional polymer shape memory materials do not have the ability to shield electromagnetic waves, and cannot protect wire harness systems with high electromagnetic sensitivity. This defect greatly limits the application of polymer shape memory materials, especially in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/16C08K9/06C08K9/02C08K3/04C08J3/24C08J3/28C08J5/18
CPCC08J3/24C08J3/28C08J5/18C08J2327/16C08K9/06C08K9/02C08K3/042C08K3/041
Inventor 聂伟王春博冉祥海付超钱景
Owner 广东粤港澳大湾区黄埔材料研究院
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