Preparation by Electroless Plating and Electromagnetic Shielding Effectiveness of Ni-Cu-Coated Calcium-Magnesium Silicate Whisker

Abstract:

A new kind of Ni-Cu-coated calcium-magnesium silicate whiskers was prepared by electroless plating and characterized by EDS, SEM and XRD. And the preparation and shielding performance of a new kind of Ni-Cu-coated calcium-magnesium silicate whisker/nickel powder/epoxy resin electromagnetic shielding coatings were explained. The study results show the Ni-Cu-coated whisker with micro-sized spinal structure contains 12.4 wt% Ni and 1.35 wt% Cu. When the coating layer thickness is 300 μm, the shielding effectiveness of the coatings containing 4 wt% Ni-Cu-coated calcium-magnesium silicate whisker is up to 39.24-48.52 dB and increased an average of 10.38 dB compared with the nickel powder/epoxy resin electromagnetic shielding coatings in the frequency range of 0.3-1000 MHz. This offers a new idea to raise the levels of the comprehensive utilization of mineral resources and the prevention of electromagnetic environmental pollution.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 400-403
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.400
• Online since: February 2011
• Authors: Deng Gao Guan, Chuan Min Sun, Jin Hui Lin, Yao Sun, Guan Li Xu, Ting Lei
• Keywords: Calcium-Magnesium Silicate Whisker, Electroless Plating (EP), Electromagnetic Environmental Protection, Electromagnetic Shielding Coating, Shielding Effectiveness

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