Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8027828 | Surface and Coatings Technology | 2014 | 6 Pages |
Abstract
The activation of the polyester (PET) by the solution of ferrous compound was examined as a palladium-free activation process. The principle of the process is based on the adsorption of Fe2Â + on the substrate surface, reduction of Fe2Â + into elementary substance Fe0, which is served as the catalyst for electroless plating. The Ni/PET composite can be obtained in three steps, namely: (i) the grafting of amino groups onto PET surface, (ii) the iron Fe0 seeding of the PET surface, and (iii) the nickel metallization using electroless plating bath. XPS, XRD, and AFM were used to characterize each step of the process. Adhesion of the nickel coating on PET was evaluated by a Scotch® tape test. Corrosive resistance of the Ni/PET composite was examined by a salty solution. The electromagnetic shielding effectiveness of the Ni/PET composite was more than 50Â dB at frequency ranging from 100 to 1000Â MHz. Comparing Fe2Â + with Ni2Â + as the metallic resource of the catalyst for electroless plating via the same process: the former resulting in a quicker nickel deposition rate and better nickel adhesion performance.
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Physical Sciences and Engineering
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Authors
Guoqing Shi, Wenlong Li, Yinxiang Lu,