探讨了一种新型水基憎水剂的制备和成膜工艺,并分析了预处理金属表面超憎水膜的形成机理.将这种以聚四氟乙烯和硅溶胶为基础组分的水基憎水剂在化学镀镍膜和磷化膜上进行憎水处理,与工业上常用的有机硅氧烷类憎水剂进行对比,表明这种憎水剂获得的膜层具有憎水效果优异、附着力好、耐磨性好、制备工艺简单等优点.利用扫描电镜、接触角测试仪等对这种憎水膜层的微观形貌和成分、憎水角等进行了表征分析.结果表明,这种水基憎水剂在化学镀镍膜和磷化膜表面形成憎水膜层的憎水角分别为155～157°和146～148°,膜层增重分别为0.81和0.54mg/cm2.
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