化学气相沉积制备自清洁涤纶织物

Preparation of self-cleaning polyester fabrics by chemical vapor deposition

为制备自清洁涤纶织物,采用碱液对涤纶织物进行碱减量处理,再利用烷基氯硅烷对处理后的涤纶织物进行化学气相沉积。结果表明,采用20～30 g/L的NaOH溶液对涤纶织物进行碱减量处理,可提高化学气相沉积反应后织物表面的接触角;当烷基氯硅烷混合溶液总体积分数为30%,DDS与MTS体积比为1∶5,化学气相沉积120 min,可制得接触角高达154.9°的超疏水涤纶织物。集灰试验表明,该涤纶织物表面具有良好的自清洁功能。

To obtain the self-cleaning polyester fabrics, polyester fabrics were firstly treated by alkali solutions, and then reacted with alkyl chlorosilanes by the method of chemical vapor deposition. The results show that contact angles of the polyester fabrics, treated with 20 -30 g/L alkali solution, increased after chemical vapor deposition. With DDS to MTS being 1：5, when the total volume concentration of alkyl chlorosilanes was 30%, the contact angle of polyester fabric increased to 154.9°after deposited for 120 rain; and this fabric has excellent superhydrophobic and self-cleaning properties.