无氟酯化修饰法对涤纶织物的超疏水整理

Method of Super Hydrophobic Finishing of Polyester Fabric without Fluoride Esterification Modified

根据荷叶效应的机理,使用简单的化学刻蚀法,以氢氧化钠溶液作为刻蚀剂,在涤纶织物表面上构筑出具有微/纳米级双尺寸粗糙度的表面,以低表面能有机物十八烷酸乙醇溶液进行酯化修饰。重点研究刻蚀动力学条件如刻蚀浓度、刻蚀温度、刻蚀时间等因素对纤维表面粗糙度、减量率、强力的影响规律。依据"较为理想的粗糙面、酯化修饰较为理想的接触角、较好的自清洁性能、不损失力学性能"原则,优化了刻蚀剂浓度、温度和时间三个影响因素。通过对涤纶样的功能整理,制备了超疏水涤纶织物样,且通过一定次数的水洗,仍然具有良好的疏水性。

In this work, the superhydrophobic PET fabrics were fabricated via a simple chemical etching method based on the lotus-leaf effect after modification of low-surface-energy stearic acid. As for the chemical etching process, the sodium hydroxide aqueous solution was acted as the etchant and a lot of micro-/nanoseale roughness was constructed on the surface of the PET fabrics. The effects of etching kinetics including the concentration of etchants, etching temperature and etching time on the surface roughness, weight loss and mechanical properties were specially studied. To obtain a relatively ideal surface roughness, a large contact angle after esterification modificationexhibiting a relatively good anti-washing and anti-abrasion ability. Note that the obtained superhydrophobic PET fabrics after a simulation experiment, they still have a good anti-washing, affter washing more times.