采用污染性较低的MnO2-H2SO4-Na5P3O10体系,在60℃下对ABS塑料基板微蚀10 min.通过测量体系的氧化还原电位和可溶四价锰离子浓度,分析了微蚀液的组成与体系氧化能力的关系.研究了硫酸含量和三聚磷酸钠含量对ABS基板的表面形貌、亲水性及其与化学镀层之间粘结强度的影响.当H2SO4为13.5 mol/L、Na5P3O10为60 g/L以及MnO2为60 g/L时,微蚀效果最好,水接触角为30.5°,与铜层之间的粘结强度为1.30 kN/m.此外,MnO2-H2SO4-Na5P3O10微蚀体系在工艺和微蚀效果方面都优于MnO2-H2SO4体系.
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