以金红石型纳米TiO2及自制的氟树脂制备了氟碳涂料,采用刷涂法于铁片表面构筑了超疏水涂层.考察了纳米TiO2与氟树脂用量、热处理温度等对涂层疏水性的影响,并分别用扫描电镜(SEM)、接触角测量仪观察和测试了涂层表面的微观结构及疏水性.结果表明,涂层表面的水接触角随着氟树脂用量的增加而增大,随纳米TiO2用量的增加呈先增后减的趋势.涂层的吸水率随着氟树脂用量的增加而减少,随纳米TiO2用量的增加呈先减后增的趋势.随着热处理温度的升高,涂层的水接触角先增后减,吸水率先减后增.最佳工艺条件是TiO2及氟树脂的质量分数分别为12％与40％,热处理温度170℃.此条件下得到的涂层表面具有微/纳二元粗糙结构,对水静态接触角达152°,为超疏水涂层,并具有优异的耐水、耐酸碱、耐洗刷、耐沾污及自清洁性能.
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