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Nickel plating silvered glass bead and preparation method thereof

A technology of silver-plated glass and glass microbeads is applied in the fields of electromagnetic shielding materials, functional materials and electromagnetic shielding materials preparation, which can solve the problems of complicated process, no reports of nickel-plated silver-plated glass microbeads technology, etc., and achieve uniform coating. Dense, good electromagnetic wave reflection effect, wide electromagnetic shielding frequency effect

Active Publication Date: 2015-03-11
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complex process
[0006] There is no report about the related technology of nickel-plated silver-plated glass microspheres

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Pretreatment: At room temperature, disperse 60 g of hollow glass microspheres with a particle size of 400-500 mesh in 1000 ml of a solution containing 23 g / L sodium hydroxide, stir for 10 min, rinse with deionized water until neutral, and filter; Then disperse the degreased hollow glass microspheres in 1000ml solution containing 20ml / L hydrofluoric acid and 2g / L sodium fluoride, stir for 20min, rinse with deionized water until neutral, and filter; then the roughened Hollow glass microspheres were dispersed in 1000ml solution containing 20g / L stannous chloride, 40ml / L hydrochloric acid and 0.2g / L tin particles, stirred for 10min, washed with deionized water until neutral, filtered; then the sensitized hollow Disperse the glass microspheres in 1000ml containing 0.3g / L palladium chloride and 15ml / L hydrochloric acid solution, stir for 10min, rinse with deionized water until neutral, filter; finally disperse the activated hollow glass microspheres in 1000ml containing 10...

Embodiment 2

[0047](1) Pretreatment: At room temperature, disperse 80 g of solid glass beads with a particle size of 600-700 mesh in 1000 ml of a solution containing 11.5 g / L sodium hydroxide and stir for 20 min, rinse with deionized water until neutral, and filter ; then the glass beads after degreasing are dispersed in 1000ml containing 25ml / L hydrofluoric acid and 2g / L sodium fluoride solution and stirred for 20min, washed with deionized water until neutral, filtered; then the roughened Disperse the glass microspheres in 1000ml containing 20g / L stannous chloride, 30ml / L hydrochloric acid and 0.1g / L tin particle solution, stir for 10min, wash with deionized water until neutral, filter; then the sensitized glass microspheres Disperse beads in 1000ml solution containing 0.4g / L palladium chloride and 20ml / L hydrochloric acid, stir for 10min, rinse with deionized water until neutral, and filter; finally, disperse the activated glass microbeads in 1000ml solution containing 5g / L hypochlorite ...

Embodiment 3

[0058] (1) Pretreatment: At room temperature, disperse 60 g of hollow glass microspheres with a particle size of 500-600 mesh in 1000 ml of a solution containing 35 g / L sodium hydroxide, stir for 10 min, rinse with deionized water until neutral, and filter; Then disperse the degreased hollow glass microspheres in 1000ml solution containing 25ml / L hydrofluoric acid and 2.5g / L sodium fluoride, stir for 15min, rinse with deionized water until neutral, and filter; The hollow glass microspheres are dispersed in 1000ml containing 20g / L stannous chloride, 40ml / L hydrochloric acid and 0.2g / L tin particle solution, stirred for 10min, rinsed with deionized water until neutral, filtered; then the sensitized Hollow glass microspheres are dispersed in 1000ml containing 0.5g / L palladium chloride and 30ml / L hydrochloric acid solution, stirred for 10min, rinsed with deionized water until neutral, filtered; finally the activated hollow glass microspheres are dispersed in 1000ml containing 7g / ...

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Abstract

The invention belongs to the technical field of materials, relates to the functional material technology, in particular to electromagnetic shielding material technology, and relates to the preparation technology of the materials. According to a nickel plating silvered glass bead, the glass bead is adopted as a carrier, a nickel plating layer enables a powder body to be good in magnetic conductivity, a surface silvered layer enables the powder body to be good in electrical conductivity, and a nickel layer and a surface silver layer are respectively obtained through a chemical plating method. The glass bead is adopted as the carrier, the middle is the nickel layer, the surface is the silver layer, and the ratio between nickel and silver is between 1.5 and 4.0. A preparation method of the nickel plating silvered glass bead comprises the processes of preprocessing, chemical nickel-plating, chemical silvering and postprocessing. The power body has good magnetic conductivity and excellent electrical conductivity, electromagnetic shielding frequency range is wide, a good electromagnetic absorption effect is achieved in low frequency, and a good electromagnetic wave reflective effect is achieved in medium-high frequency. The nickel plating silvered glass bead is uniform in plating densification, good in intensity and impact resistance, small in density, suitable for the field of electromagnetic shielding, and particularly suitable for electromagnetic absorption, electromagnetic absorption and heat-conductive electricity-conductive materials.

Description

technical field [0001] The invention belongs to the field of material technology, and relates to functional material technology, in particular to electromagnetic shielding material technology, and to the preparation technology of electromagnetic shielding material. Background technique [0002] With the rapid development of information technology, computer networks, information processing equipment, electronic communication equipment and other electrical equipment have been widely used in various industries as the carrier of information technology, which brings great convenience to human life, but electronic equipment The electromagnetic pollution produced has become a social hazard that cannot be ignored today. Electromagnetic shielding technology is an effective means to suppress electromagnetic information leakage and prevent electromagnetic radiation pollution. Conductive polymers have been used as electromagnetic shielding materials due to their unique flexibility, ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/40
Inventor 徐勤涛刘玉凤刘永峙于名讯潘士兵韩建龙于万增连军涛肖德凯黄成亮
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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