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Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method

A technology of ultra-high molecular weight and composite materials, which is applied in the field of ultra-high molecular weight polyethylene/graphene/nickel composite materials and its preparation, which can solve the problems of high density, large amount of addition, poor dispersion, etc., and achieve good reproducibility , Conductivity and electromagnetic shielding performance are stable, and the effect of improving conductivity and electromagnetic shielding performance

Active Publication Date: 2017-02-01
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low electrical conductivity of the carbon-based filler itself, and it is easy to agglomerate in the matrix, the dispersion is not good, so it needs to be added in a large amount when preparing composite materials with high electromagnetic shielding efficiency.
Metal fillers have excellent electrical conductivity, but their disadvantages such as high density and high cost greatly limit their application

Method used

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  • Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method
  • Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method
  • Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Disperse graphene oxide and ultra-high molecular weight polyethylene with a volume ratio of 0.1:99.9 into ethanol solution, stir and evaporate at a constant temperature of 90°C, dry the obtained sample, and then pass through a hydrazine hydrate solution at 90°C to reduce it with stirring for 4 hours, and filter , Washing and drying to obtain graphene-coated ultra-high molecular weight polyethylene particles.

[0023] Pretreatment of the surface of graphene-coated ultra-high molecular weight polyethylene particles includes: sensitization: add graphene-coated ultra-high molecular weight polyethylene particles to 100ml of sensitizing solution at 30°C in an ultrasonic bath Stir in medium for 15 minutes, wash; activation: add the sensitized ultra-high molecular weight polyethylene particles to 100ml of activation solution, stir in an ultrasonic water bath at 30°C for 15 minutes, wash and dry for later use.

[0024] The preparation process of sensitizing solution and activation so...

Embodiment 2

[0031] Disperse graphene oxide and ultra-high molecular weight polyethylene with a volume ratio of 0.1:99.9 into ethanol solution, stir and evaporate at a constant temperature of 60°C, dry the obtained sample, stir and reduce it with hydrazine hydrate solution at 80°C for 3h, and filter , Washing and drying to obtain graphene-coated ultra-high molecular weight polyethylene particles.

[0032] Pretreatment of the surface of graphene-coated ultra-high molecular weight polyethylene particles, including: sensitization: add graphene-coated ultra-high molecular weight polyethylene particles to 100ml of sensitizing solution, at 25°C, in an ultrasonic bath Stir in medium for 30 minutes, wash; activation: add the sensitized ultra-high molecular weight polyethylene particles to 100ml of activation solution at a temperature of 30°C, stir in an ultrasonic water bath for 30 minutes, wash and dry for later use.

[0033] The preparation process of sensitizing solution and activation solution is a...

Embodiment 3

[0040] Disperse graphene oxide and ultra-high molecular weight polyethylene with a volume ratio of 0.1:99.9 into ethanol solution, stir and evaporate at a constant temperature of 70°C, dry the obtained sample, stir and reduce with hydrazine hydrate solution at 90°C for 4 hours, and filter , Washing and drying to obtain graphene-coated ultra-high molecular weight polyethylene particles.

[0041] Pretreatment of the surface of graphene-coated ultra-high molecular weight polyethylene particles, including: sensitization: add graphene-coated ultra-high molecular weight polyethylene particles to 100ml of sensitizing solution, at 25°C, in an ultrasonic bath Stir in medium for 60 minutes and wash; activation: add the sensitized ultra-high molecular weight polyethylene particles to 100ml of activation solution, stir in an ultrasonic water bath at 30°C for 60 minutes, wash and dry for later use.

[0042] The preparation process of sensitizing solution and activation solution is as follows:

...

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Abstract

The invention relates to the field of functional composite materials, in particular to an ultra-high molecular weight polyethylene-graphene-nickel composite material with a high electromagnetic shielding performance and a preparation method. Composite materials used for preparing the composite materials are nickel-plated graphene-coated ultra-high molecular weight polyethylene particles taking metallic nickel as a shell structure and taking graphene-coated ultra-high molecular weight polyethylene particles as a core, wherein the content of the graphene-coated ultra-high molecular weight polyethylene particles ranges from 97.42 vol% to 98.91 vol%, the content of metallic nickel ranges from 1.09 vol% to 2.58 vol%, and the content of graphene in the composite material is at least 0.028 vol%. By preparing the composite material with the isolation structure, on the condition that the content the metallic nickel and the content of the graphene are extremely low, the electric conductivity and electromagnetic shielding performance of the composite material can be significantly improved, and the purposes of the high electric conductivity and the high electromagnetic shielding performance of the composite material are achieved.

Description

Technical field [0001] The invention relates to the field of functional composite materials, in particular to an ultra-high molecular weight polyethylene / graphene / nickel composite material with high electromagnetic shielding performance and a preparation method. Background technique [0002] With the rapid development of the modern electronics industry, electronic appliances and radio communications have been widely used. Electromagnetic radiation has become another major public hazard after noise pollution, air pollution, water pollution, and solid waste pollution. Electromagnetic waves not only interfere with the normal operation of various electronic equipment and threaten the information security of communication equipment, but also cause great harm to human health. At present, the main method to eliminate the harm of electromagnetic waves is to use electromagnetic shielding materials to shield them. Therefore, exploring high-efficiency electromagnetic shielding materials ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/04C08K3/08C08J7/06C08J7/00C23C18/36C23C18/28H05K9/00
CPCC08J7/00C08J7/06C08J2323/06C08K3/04C08K3/08C08K2003/0862C23C18/28C23C18/36H05K9/0081H05K9/0083C08L23/06
Inventor 赵贵哲许亚东杨雅琦赵明娟段宏基刘亚青
Owner ZHONGBEI UNIV
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