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Conductive aramid paper and method for producing same

A manufacturing method and conductive technology, applied in the field of conductive aramid paper for electromagnetic wave shielding and its manufacturing, can solve problems such as difficulty in making thin fabrics, low shape stability, and poor processability

Inactive Publication Date: 2016-05-04
DUPONT TEIJIN ADVANCED PAPERS JAPAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fabrics woven from metal-coated fibers as described above have the following problems: difficulty in making thin fabrics, low shape stability, and poor processability
However, none of them are aimed at the above-mentioned electromagnetic wave shielding materials, so they cannot meet the requirements in terms of electrical conductivity, especially surface resistance and resistance in the thickness direction, which are important for electromagnetic wave shielding properties.

Method used

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  • Conductive aramid paper and method for producing same
  • Conductive aramid paper and method for producing same
  • Conductive aramid paper and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0057] The above-prepared meta-aramid fibrids, meta-aramid short fibers, and carbon fibers (manufactured by Toho Tenacus Co., Ltd., fiber length 3 mm, single fiber diameter 7 mm) mu m, fineness is 0.67dtex, volume resistivity is 1.6×10 -3 Ω·cm) were dispersed in water to prepare a slurry. Mix this slurry to make meta-aramid precipitated fiber, meta-aramid short fiber and carbon fiber reach the proportioning shown in table 1, use TAPPI formula hand-drawn machine (cross-sectional area is 325cm 2 ) were processed to produce flakes. Next, the obtained sheet was hot-pressed at a temperature of 330° C. and a linear pressure of 150 kg / cm using a pair of metal calender rolls, and a metal (copper-nickel alloy) layer was formed on the surface of the obtained sheet by an electroless plating method to obtain Conductive aramid paper. The main characteristic values ​​of the conductive aramid paper obtained in this way are shown in Table 1.

Embodiment 4

[0059]Utilize a pair of metal calendering rolls to carry out hot press processing according to the flake obtained by the same method as Example 1 at a temperature of 350° C. and a line pressure of 150 kg / cm, and form a metal (copper) on the surface of the gained flake by electroless plating. -nickel alloy) layer, a conductive aramid paper is obtained. The main characteristic values ​​of the conductive aramid paper obtained in this way are shown in Table 1.

[0060] [Table 1]

[0061]

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Abstract

The present invention provides conductive aramid paper which has a metal layer on the surface of aramid paper that contains aramid short fibers, aramid fibrids and a conductive filler. This conductive aramid paper has a resistance of 0.01-0.10 Omega / cm2 in the thickness direction.

Description

technical field [0001] The invention relates to conductive aramid paper for electromagnetic wave shielding and a manufacturing method thereof. Background technique [0002] Due to the development of a highly informationized society and the advent of a multimedia society, the electromagnetic wave interference generated by electronic equipment on other equipment and on the human body has become a major social problem. As the electromagnetic wave environment is deteriorating, electromagnetic wave shielding materials have been developed as one of the defense methods against electromagnetic waves. Conventionally, as an electromagnetic wave shielding material, a material obtained by applying a metal coating to a braided fabric such as a woven fabric made of lightweight and flexible fibers, for example, a synthetic polymer fiber, has been used. Methods for forming a metal coating on fibers include vacuum evaporation, sputtering, electroless plating, and the like. Fabrics woven fr...

Claims

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Application Information

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IPC IPC(8): D21H21/14B32B15/12D21H13/26D21H13/50D21H19/02H01B13/00H05K9/00
CPCB32B15/12B32B15/14B32B2262/0269B32B2262/106B32B2307/202B32B2307/212B32B2307/306B32B2307/54B32B2307/734B32B2605/00D21H13/26D21H13/50D21H19/02D21H21/14H01B1/026H01B1/24H05K9/0088
Inventor 成濑新二藤森龙士近藤千寻富冈建介岩崎好博小林义弘
Owner DUPONT TEIJIN ADVANCED PAPERS JAPAN