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首先利用氨基封端聚二甲基硅氧烷(APDMS)对蒙脱土(MMT)进行有机改性,再用改性蒙脱土(APDMSMMT)结合气相白炭黑作为填料,修饰室温硫化硅橡胶(RTV-1)构建微-纳米结构,形成超疏水表面。通过红外光谱(FTIR)和X射线衍射(XRD)对改性蒙脱土进行了表征,利用扫描电镜(SEM)和水触角仪(WCA)研究了涂层(APDMS-MMT/SiO_2/RTV-1)微观结构及其疏水效果。结果表明,APDMS改性的蒙脱土层间距由1.24nm增加到1.81nm,使蒙脱土能更好地分散在RTV-1中;2种填料在RTV-1表面构建了微-纳米复合结构,测得涂层的接触角(CA)为156°,滚动角(SA)为6°。
Firstly, the montmorillonite (MMT) was organically modified with amino-terminated polydimethylsiloxane (APDMS), then the modified montmorillonite (APDMSMMT) and fumed silica were used as filler to modify the room temperature vulcanized silicone rubber (RTV-1) to construct micro-nanostructures to form superhydrophobic surfaces. The modified montmorillonite was characterized by infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The coating (APDMS-MMT / SiO_2 / RTV-1 Microstructure and its hydrophobic effect. The results showed that the interlayer spacing of APDMS modified montmorillonite increased from 1.24nm to 1.81nm, which made the montmorillonite disperse better in RTV-1. Two kinds of fillers formed micro-nano composite structure on the surface of RTV-1 The measured contact angle (CA) of the coating was 156 ° and the roll angle (SA) was 6 °.