Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container, and preparation method thereof

A technology of expanded graphite and composite materials, applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problems of high addition amount, low electrical conductivity, expensive production cost, etc., and achieve improved electrical conductivity and electromagnetic Shielding performance, conductivity and electromagnetic shielding performance are stable, and the effect of high electromagnetic shielding performance

Active Publication Date: 2020-06-12
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the research status at home and abroad, the addition of carbon-based fillers, especially graphene and carbon nanotubes, has become a research hotspot in the preparation of CPCs electromagnetic shielding composite materials, but its expensive production costs and complicated preparation methods have greatly limited this research. Practical application of a kind of electromagnetic shielding material
On the other hand, although carbon-based fillers such as carbon black and expanded graphite are economical and cheap, their own electrical conductivity is low, and a high amount of addition is required to achieve high shielding efficiency, so the mechanical properties of the composite material will be significantly reduced

Method used

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  • Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container, and preparation method thereof
  • Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container, and preparation method thereof
  • Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of nylon 6 / expanded graphite / nickel composite material, comprising the following steps:

[0032] (1) The expanded graphite and nylon 6 with a volume ratio of 0.15:99.66 were placed in a high-speed blender and blended for 1 minute at a speed of 24000 r / min to obtain expanded graphite-coated nylon 6 particles.

[0033] (2) Pretreat the surface of the expanded graphite-coated nylon 6 particles, including: sensitization: add 40 g of expanded graphite-coated nylon 6 particles to 1000 ml of sensitization solution, stir in an ultrasonic water bath for 15 minutes at 30° C., Washing; Activation: Add the sensitized expanded graphite-coated nylon 6 particles to 1000ml activation solution, stir in an ultrasonic water bath at 30°C for 15min, wash and dry for later use.

[0034] Wherein the preparation process of the sensitizing solution and the activating solution is as follows:

[0035] Sensitizing solution: Weigh 20g of stannous chloride, add 10ml of 36wt% co...

Embodiment 2

[0041] A preparation method of nylon 6 / expanded graphite / nickel composite material, comprising the following steps:

[0042] (1) The expanded graphite and nylon 6 with a volume ratio of 0.15:99.66 were placed in a high-speed blender and blended for 2 minutes at a speed of 24000 r / min to obtain expanded graphite-coated nylon 6 particles.

[0043] (2) Pretreat the surface of the expanded graphite-coated nylon 6 particles, including: sensitization: add 40 g of expanded graphite-coated nylon 6 particles to 1000 ml of sensitization solution, stir in an ultrasonic water bath for 15 minutes at 30° C., Washing; Activation: Add the sensitized expanded graphite-coated nylon 6 particles to 1000ml activation solution, stir in an ultrasonic water bath at 30°C for 15min, wash and dry for later use.

[0044] Wherein the preparation process of the sensitizing solution and the activating solution is as follows:

[0045] Sensitizing solution: Weigh 20g of stannous chloride, add 10ml of 36wt% c...

Embodiment 3

[0051] A preparation method of nylon 6 / expanded graphite / nickel composite material, comprising the following steps:

[0052] (1) The expanded graphite and nylon 6 with a volume ratio of 0.15:99.66 were placed in a high-speed blender and blended for 3 minutes at a speed of 24000 r / min to obtain expanded graphite-coated nylon 6 particles.

[0053] (2) Pretreat the surface of the expanded graphite-coated nylon 6 particles, including: sensitization: add 40 g of expanded graphite-coated nylon 6 particles to 1000 ml of sensitization solution, stir in an ultrasonic water bath for 15 minutes at 30° C., Washing; Activation: Add the sensitized expanded graphite-coated nylon 6 particles to 1000ml activation solution, stir in an ultrasonic water bath at 30°C for 15min, wash and dry for later use.

[0054] Wherein the preparation process of the sensitizing solution and the activating solution is as follows:

[0055] Sensitizing solution: Weigh 20g of stannous chloride, add 10ml of 36wt% c...

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Abstract

The invention relates to the field of electromagnetic shielding composite materials, and concretely relates to a nylon 6 / expanded graphite / nickel composite material for an electromagnetic shielding container, and a preparation method thereof. The composite material has a super-efficient electromagnetic shielding performance, and can be easily prepared in a large scale. Nylon 6 / expanded graphite / nickel composite particles are added into a mold, and hot pressing is performed at 220 DEG C and 10 MPa for 10 min for molding to obtain the nylon 6 / expanded graphite / nickel composite material with an isolation structure and ultra-efficient electromagnetic shielding performance. The composite material with the isolation structure is prepared, a nickel-expanded graphite composite conductive network is constructed, through the synergistic effect of metal-carbon, under the condition that the content of metal nickel and expanded graphite is extremely low, the conductivity and the electromagnetic shielding performance of the composite material can be remarkably improved, and the purposes of high conductivity and high electromagnetic shielding performance of the composite material are achieved.

Description

technical field [0001] The invention relates to the field of electromagnetic shielding composite materials, in particular to a nylon 6 / expanded graphite / nickel composite material for electromagnetic shielding containers and a preparation method thereof. The composite material has ultra-efficient electromagnetic shielding performance and is easy to prepare on a large scale. Background technique [0002] The rapid development of communication technology has brought great convenience to people's life, but the extensive application of related electronic and electrical equipment has brought serious electromagnetic wave pollution. These high-frequency electromagnetic radiation and electromagnetic interference not only endanger people's health, but also cause serious interference to the normal operation of military and civilian equipment. Therefore, it is imminent to develop an electromagnetic shielding material with high-efficiency shielding performance and easy mass production. ...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K7/24C08K3/08C23C18/34
CPCC08K7/24C08K3/08C23C18/34C08K2003/0862C08K2201/001C08L77/02
Inventor 段宏基任威孙铭刘亚青赵贵哲盛安
Owner ZHONGBEI UNIV
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