ABS工程塑料表面无铬二氧化锰微蚀粗化的研究

摘要

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.%The surface of ABS engineering plastic was etched using a solution comprising of H3PO4, H2SO4, and MnO2. The relationship between composition of etching solution and its oxidation capacity was analyzed by the measurement of open circuit potential. The effect of the volume ratio of H3PO4 to H2SO4 in etching solution on morphology and contact angle of ABS plastic surface and its adhesion to copper coating was discussed. The optimal composition of etching solution is as follows: MnO2 60 g/L and F(H3PO4) : F(H2SO4) = 1.5:1. After treatment by the optimal etching solution for 20 min, lots of fine and dense micropores are formed on the surface of ABS plastic. The etched ABS plastic has a contact angle of 39.5° to water and an adhesion strength of 0.60 kN/m to plated copper coating.