纳米技术在仿荷叶织物上的应用

Application of nanotechnology on fabrics with lotus surfaces

以荷叶效应为基础,从荷叶微米结构的乳突和纳米结构2方面综合仿制织物:选用线密度为160 dtex/48 f的涤纶超细海岛型纤维仿乳突直径,以采用绉组织和织物中加入高收缩涤纶丝的方法仿乳突的高度;用纳米TiO2仿纳米结构,进行纳米粒子的分散性研究。确定复合分散剂为月桂酸钠和聚丙烯酸铵,当月桂酸钠与聚丙烯酸铵的质量比为1∶1,超声时间为10 min时,分散效果比较理想。最后对仿荷叶织物的各项性能进行测试。结果表明:织物拒水性能大幅提高,透湿、透气性可以满足基本服用要求,悬垂性和耐皱性都较好,但织物的光泽不佳。

The method is applied that the superficial structure of lotus is imitated, on the one hand, it imitates the nipple rise of the micron structure of lotus, and on the other hand, it imitates the nanometer structure of lotus. The polyester superfine sea-island fiber with the linear density 160 dtex/48 f is selected to imitate the diameter of nipple rise; the crepe weave and the high-shrinkage polyester filament are used in the fabric to imitate the rise height of nipple. The nanometer structure of lotus is imitated with nanometer titanium dioxide. It is determined that the compound dispersing agent consist of the lauryl sodium and polyacrylic ammonium; when the proportion of lauryl sodium and polyacrylic ammonium is 1 ： 1 and the supersonic time is 10 min, the dispersion effect is quite ideal. Finally, the properties of the fabric with lotus-like surface are tested. The results show that the developed fabric has satisfying super hydrophobicity, basic moisture permeability and air permeability, better drape and wrinkle resistance, but luster isn＇t very good.