以正硅酸乙酯(TEOS)为交联剂、二月桂酸二正辛基锡(DOTDL)为催化剂,利用聚二甲基硅氧烷(PDMS)与聚四氟乙烯(PTFE)超细粉杂合固化在玻璃基体上制得具有一定透明度的自清洁超疏水涂层.使用接触角测量仪、扫描电镜、傅里叶红外光谱仪对表面浸润性、形貌及结构进行表征,讨论了PTFE超细粉加入量对表面结构和浸润性的影响,探究了涂层的自清洁性能.制得的超疏水表面静态接触角最高达169.83°,滚动角2~3°,具有很好的超疏水性、低粘附力及自清洁性能.
Superhydrophobic coatings with a certain transparency and self-cleaning performance were obtained by hybrid curing PDMS and PTFE ultrafine powder on slide glass substrate with TEOS as cross-linking agent and DOTDL as catalytic agent.Contact angle measurement instrument, FT-IR and SEM were applied to characterize wettability, morphology and structure of the surfaces of superhydrophobic coatings.The effect of the addition of PTFE ultrafine powders on structure and wettability of superhydrophobic coatings surfaces was discussed, and self-cleaning property of superhydrophobic coatings was investigated.The superhydrophobic coatings with maximum contact angle of 169.83° and water roll angle of about 2-3° have superb superhydrophobicity, ultra-low adhesive force and self-cleaning performance.
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