采用由磷酸、硫酸、二氧化锰组成的微蚀液对ABS工程塑料表面进行微蚀.通过测量开路电位,分析了微蚀液的组成与其氧化能力的关系.讨论了微蚀液中磷酸和硫酸的体积比对ABS塑料表面形貌、表面接触角及其与铜膜之间粘结强度的影响.微蚀液的最佳组成为:MnO2 60 g/L,V(H3PO4)∶V(H2SO4)=15∶1.ABS塑料经最佳组成的微蚀液处理20 min后,其表面形成大量均匀致密的微孔,其表面对水的接触角为39.5°,与铜镀层的粘结强度为0.60kN/m.
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