利用无铬且低环境污染的MnO2-H2SO4-H3PO4-H2O微蚀体系,研究了微蚀液的组成、微蚀时间及温度对聚碳酸酯塑料表面微蚀效果的影响.利用扫描电镜、表面粗糙度、接触角及粘结强度测定,对微蚀效果进行评价.结果表明,当微蚀溶液中V(H2O)∶ V(H3PO4)∶ V(H2SO4)为1∶1∶3.4,80 g/L MnO2,θ为60℃,微蚀t为10 min时,可以获得较好的表面形貌,聚碳酸酯基板表面与水的接触角由95.2°降低为44.7°,基板表面由明显的憎水性变为亲水性,其粘结强度达到0.88 kN/m,微蚀效果比较理想.
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