纳米SiO_2层层组装构建超疏水表面  

Construction of superhydrophobic surface with nano-silica based on layer-by-layer assembly

作　　者：李浩 苏勋家[1] 侯根良[1] 毕松 陈景贵 

机构地区：[1]第二炮兵工程大学,西安710025

出　　处：《化工新型材料》2014年第10期102-104,共3页New Chemical Materials

基　　金：国家自然科学基金(51302312)

摘　　要：采用500nm和20nm的SiO2粒子,通过表面改性使其分别具有氨基和环氧基,利用氨基和环氧基的反应使500nm和20nm的SiO2粒子形成复合粒子,制备了具有微纳米双尺寸粗糙度的超疏水表面。通过扫描电镜和接触角测量仪对超疏水表面的结构及性能进行了表征,发现其具有微纳米二级结构,测得其静态接触角达到156°,滚动角小于3°,并且能够承受240℃的高温而保持其超疏水性能,为超疏水表面的制备提供了一种新的方法。500nm and 20nm SiO2 was linked together to form composite particle,thereby composing superhydropho- bic surface with micro nano roughness, by reaction of amino group and epoxy group, after surface modification of 500nm and 20nm SiO2 which owned amino group and epoxy group respectively. The structure and properties of superhydrophobic sur- face were characterized via scanning electron microscopy and contact angle measurement instrument, which was found to own micro-nano secondary structure and whose static contact angle and rolling angle reached 156° and 3° respectively, fur vhermore which could kep its superhydrophobicity at 240℃, thus a new method for the preparation of superhydrophobic surfaces was obtained.

关 键 词：纳米SIO2 复合粒子 层层组装 超疏水 

分 类 号：TQ127.2[化学工程—无机化工]