摘要： 针对常规超疏水涂层制备工艺繁琐等问题，以介孔 SiO₂纳米颗粒（ MCM-41）为填料和载体，聚二甲基硅氧烷（ PDMS）为低表面能改性剂，环氧树脂及其固化剂为成膜物，采用喷涂法制备了超疏水涂层。通过场发射扫描电子显微镜、共聚焦显微镜、接触角测量仪、拉伸试验机对其表面形貌、结构、疏水性及附着力进行表征。重点考察了 PDMS改性的 MCM-41（MCM-41/PDMS）和树脂基体质量比对涂层性能的影响。结果表明：当 MCM-41/PDMS质量分数为 55%，可以得到涂层疏水性（接触角 150°，滚动角 9°）和附着力（ 7. 33 MPa）的最佳匹配，涂层经过胶带剥离 300次和磨损 150周期后，水接触角仍大于 150°。

关键词: 超疏水涂层, 附着力, 介孔 SiO₂纳米颗粒, 聚二甲基硅氧烷, 环氧树脂

Abstract: To address issues such as cumbersome preparation processes for conventional superhydrophobic coating，superhydrophobic coating was prepared by using mesoporous silica nanoparticles（MCM-41）as filler and carrier，polydimethylsiloxane（PDMS）as low surface energy modifiers，and epoxy resin and its curing agent as film former. The morphologies，structure，hydrophobicity and adhesion of coating was characterized by FE-SEM，confocal microscope，contact angle meter and tensile testing machine. The influence of MCM-41 modified by PDMS（MCM-41/PDMS）and resin matrix mass ratio on coating performancewere mainly investigated. The results showed that the optimum match of wettability（CA=150°， SA=9°）and adhesion（7. 33 MPa）could be obtained when the content of MCM-41/PDMS was55%. The water contact angle of coating surface remained over 150° after 300 times tape peeling test and 150 cycles abrasion test.

Key words: superhydrophobic coating, adhesion, mesoporous silica nanoparticles, polydimethylsiloxane, epoxy resin

中图分类号: 

• TQ637