以单分散聚苯乙烯(PS)纳米球为模板,经浓硫酸刻蚀、钛酸四丁酯(TBT)水解缩聚,制得草莓型PS@TiO2复合粒子(RPTS),表面经3-氨丙基三乙氧基硅烷(APTES)修饰提升附着力.通过浸渍提拉法在玻璃表面形成透明纳米粒子涂层,涂层表面通过辛基三乙氧基硅烷(IOTES)疏水化,形成透明超疏水涂层.考察了磺化时间对复合粒子表面形貌的影响;考察了APTES用量、IOTES用量和固化温度对涂层性能的影响.结果表明:当磺化时间为25 min时,表面乳突状结构最鲜明.当APTES用量为0.04％,IOTES用量为0.2％,固化温度为80℃,涂层透光率为89.1％,静态水接触角为152°,附着力2级,硬度3H.
Transparent superhydrophobic coatings were successfully fabricated using monodisperse 3-aminopropytriethoxysilane (APTES) modified strawberry-like PS@TiO2 composite particles (RPTS) and isooctyltriethoxysilane (IOTES).The RPTS was prepared via etching strategy against polystyrene (PS) and hydrolysis of tetrabutyltitania (TBT),and further modified with APTES.The effects of sulfonation time of strawberry-like particles,APTES concentrations,IOTES concentrations,and curing temperature on the morphology and properties of the coatings were investigated.The results showed that the papillate surface of RPTS was formed obviously at 25 min of sulfonation time.In addition,the superhydrophobic coatings exhibited a water contact angle 152°,light transmittance 89.1％,pencil hardness 3H and adhesion strength 2 grade when satisfying the following conditions:0.04 wt％ dosage of APTES,0.2 wt％ dosage of IOTES and curing temperature at 80 ℃.
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