等离子体制备自修复超疏水涂层纤维

Self-healing super-hydrophobically coated fiber prepared by plasma treatment

通过低温等离子体聚合交联作用,制备了基于PDMS@ZnO纳米颗粒复合涂层的超耐久、自修复超疏水涤纶纤维.研究了制备工艺对超疏水性、自修复性以及涂层的耐久性和稳定性的影响.结果显示, PET-g-PDMS@ZnO织物表面的水接触角(WCA)可达162.7°,滚动角(SA)为7.5°,经过300次水洗循环和1300次摩擦循环后仍然保持超疏水特性, WCA和SA分别为150.0°和35.0°.分别采用等离子体和加热方法对磨损破坏的涂层进行自修复处理,结果表明等离子体修复效果明显,而热修复只在小载荷下效果明显,并利用扫描电子显微镜、纳米压痕以及X射线光电子能谱测量结果探讨了自修复机理.该研究为等离子体技术在超疏水织物制备中的开发和应用提供理论和技术支撑.

The ultra-durable,self-healing superhydrophobic polyester fabric based on ZnO@PDMS nanoparticle composite coating(PET-g-PDMS@ZnO fiber)is prepared by low-temperature plasma polymerization.The influences of the preparation process on the superhydrophobicity,self-healing property,durability and stability of the coating are studied.The results show that the water contact angle on the surface of PET-g-PDMS@ZnO fabric can reach 162.7°,and the sliding angle is 7.5°.After 300 washing cycles and 1300 rubbing cycles,the superhydrophobic property is still maintained.Both plasma method and heating method are used to repair the worn coating,and it is found that the repair effect of plasma is obvious,while the heating repair is effective only in the case of small loads.Moreover,scanning electron microscope,nanoindentation and X-ray photoelectron spectroscopy measurement are used to explore the self-healing mechanism.This research provides the theoretical and technical support for the development and application of plasma technology in the preparation of superhydrophobic fabrics.