本文以γ-氨基丙基三甲氧基硅烷(APTMS)为改性剂,对纳米二氧化硅进行表面改性,并将其整理到棉织物上,随后利用十六烷基三甲氧基硅烷(HDTMS)对织物进行修饰,通过两步法获得棉织物超疏水界面.探讨反应条件对改性纳米SiO2的影响,并对改性纳米SiO2和整理后棉织物进行测试表征.结果表明,当温度为30℃,正硅酸四乙酯(rEOS)浓度为3％和APTMS浓度为2％,氨水用量为2 mL时,制备的改性纳米SiO2溶胶平均粒径为65.88nm,PDI为0.096,分散性较好.两步法整理后的棉织物接触角为150.36°,滚动角为8°,实现了超疏水效果,并且洗涤20次后仍具有一定疏水性.
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