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A method for the preparation of polymer surfaces for the subsequent metal plating, as well as improved produced therefrom against metal clad plastic articles.
A method for the preparation of polymer surfaces for the subsequent metal plating, as well as improved produced therefrom against metal clad plastic articles.
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机译:一种用于随后的金属镀覆的聚合物表面的制备方法,以及由此改进的抗金属包覆塑料制品的生产方法。
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摘要
Method of modifying an aromatic polymer surface to improve adhesion of a metal layer thereon and to the articles produced therefrom. The surface of the aromatic polymer such as polycarbonate, is nitrated by a contact with a nitrating solution such as a mixture of nitric and sulfuric acid and then hydroxylated by a contact with a hydroxylating solution such as ammonium hydroxide. The hydroxylated surface is thus chemically modified to become hydrophilic. The chemically modified surface is electrolessly plated with a primary metal layer. A secondary metal layer is then electrolessly or electrolytically applied on top of the primary metal layer until a metal layer of a desired thickness is attained. The present invention further discloses articles such as an EMI shielded enclosure or a printed circuit board having metal layers as an EMI shield or a conductive metal trace pattern respectively.
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