Comb- like perfluoroalkyl ester/trifluoropropyl/ethoxy silane containing polysiloxanes (FPFAS) in-termediate was prepared through hydrosilylation and ring- opening reaction, which was reacted with silica sols via in situ condensation to produce comb- like fluorosilicon copolymer/nano silica hybrid (FPFAS- SiO2). Super-hydrophobic cotton fabric with good soft handle and air permeability was fabricated via simple dip- coating method. IR, XPS, FESEM and contact angle tester were utilized to characterize its structure, morphology and application properties. The results indicated that the product had the due structure. Superhydrophobicity of the treated fabric was influenced by the particle diameter of nano silica. While mass concentration of the FP-FAS- SiO2 in ethyl acetate solution was 0.5%, water contact angle and rol- off angle on the treated fabric sur-face were 163.5° and 7°, respectively. The treated cotton fabric possessed favorable air permeability and soft-ness. A micro/nano multiscale composite film on the fiber surface could be clearly observed by FESEM.%用硅氢化加成和开环反应先制得梳状结构的全氟酯基/三氟丙基/硅乙氧基改性聚硅氧烷(FPFAS)中间体.然后利用硅乙氧基与硅溶胶间的原位缩合反应,制得了纳米SiO2梳状氟硅共聚物(FPFAS-SiO2).并用一步浸渍法处理棉织物构筑了兼具柔软、良好透气性的超疏水织物.用IR、XPS、FESEM、接触角测量仪等对产物结构、膜形貌及应用性能进行研究.结果表明,产物具有预期结构.纳米SiO2粒径影响织物的超疏水性能,当FPFAS-SiO2溶液用量为0.5%,整理后织物表面的水静态接触角和滚动角分别为163.5°和7°,具有良好的透气性和柔软性.FESEM可明显观察到纤维表面存在一层微/纳多尺度复合膜.
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