超疏水棉织物的简易制备技术

为了制备超疏水棉织物，利用烷基氯硅烷对棉织物进行气相沉积，在棉织物表面生成具有微观粗糙结构的低表面能物质聚硅氧烷，再结合织物本身的屈曲结构，使棉织物具有超疏水自清洁性能，制备方法简易，成本低且不需要昂贵的设备。采用扫描电镜、接触角测定仪、集灰试验等手段观察棉织物的表面形貌，并研究了其超疏水和自清洁性能。结果表明：当甲基三氯硅烷（MTS）与二甲基二氯硅烷（DDS）体积比为5：1，MTS与DDS的总体积为8-10 mL，气相沉积时间为120 min 时，制得棉织物表面的接触角达152.3°，滚动角为2.7°；集灰试验表明沉积后的棉织物具有良好的自清洁功能。

Study on simple preparation technology ofsuperhydrophobic cotton fabrics

In order to prepare the superhydrophobic cotton fabrics, alkylchlorosilanes were used to be deposited on the fabrics by chemical vapor deposition. The low surface materials polymethylsiloxane with microstructure were fabricated on cotton surface, which combined with the fabric roughness weaved by yarns of the fabric lead to the superhydrophobic and self-cleaning properties of the cotton fabric. This approach is simple, inexpensive and does not require expensive equipment. Surface morphologies of cotton fabrics were observed and the superhydrophobic, self-cleaning properties of deposited cotton fabrics were investigated. The results show that: when the volume ratio of methyltrichlorosilane (MTS) to dimethyldichlorosilane (DDS) was 5: 1, total volume of DDS and MTS was 8-10 mL, deposition time was 120 min, the contact angle of cotton fabric was 152.3°, and sliding angle was 2.7°.Self-cleaning tests showed that the deposited cotton fabrics have excellent self-cleaning properties.