摘要
疏水疏油表面由于具有优异的拒液性质,在防腐蚀、自清洁、管道运输等方面具有巨大的应用前景.以玻璃鳞片(GF)作为基底,通过溶胶-凝胶法将纳米SiO_(2)与GF水解复合得到GF-SiO_(2)复合填料,采用化学改性的方法对复合填料接枝全氟癸基,最后制备出具有低表面能和微纳结构的复合填料GF-SiO_(2)-F.以光固化单体作为粘结剂,GF-SiO_(2)-F作为填料,制备了光固化涂层UV-GF-SiO_(2)-F.该涂层的二碘甲烷接触角为153°,水接触角为158°,展现出双疏性质和自清洁性质.该涂层具有优异的耐久性和耐腐蚀性能,可以在恶劣环境下对材料起到保护作用.机理研究表明,通过构建复合填料形成微纳粗糙结构和化学改性后,迁移在复合填料表面的全氟癸基与微纳结构起到协同作用,共同捕获空气,形成稳定的气垫,减少了水和油与涂层的接触,从而使得UV-GF-SiO_(2)-F涂层获得疏水和疏油性质.
Hydrophobic and oleophobic surfaces exhibit outstanding liquid-repellent properties,making them highly promising for applications in corrosion resistance,self-cleaning and pipeline transportation and other fields.In this study,glass flakes(GF)were used as the substrate,GF SiO,composite fller was obtained by hydrolysis of nano-SiO_(2) and GF through sol-gel method.The composite fller GF-SiO_(2)-F with low surface energy and micro-nano structure was prepared by grafting perfluorodecyl groups onto the composite filler through chemical modification.Photo curing monomers were used as the binder,and GF-SiO_(2)-F as the filler to prepare the photo-curing coating UV-GF-SiO_(2)-F.The CH_(2)I_(2) contact angle of this coating was 153°,and the H,O contact angle was 158°,demonstrating hydrophobic,oleophobic properties and self-cleaning proper ties.Moreover,the coating demonstrated outstanding durability and corrosion resistance,providing effective protection for materials in harsh envionments:Mechanism research showed that by constructing composite filler to form micro nano rough structures and chemical modifications,the migrating perfluorodecyl groups on the surface of composit filler worked synergistically with the micro nano structures to trap air and form a stable air cushion,which significantly reduced direct contact between water/oil and the coating surface.As a result,the UV-GF-SiO_(2)-F coating is hy drophobic and oleophobic.
作者
程乾
孙明珠
梁斌
胡浩东
汪怀远
CHENG Qian;SUN Mingzhu;LIANG Bin;HU Haodong;WANG Huaiyuan(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China;China Banknote Ink Co.,Ltd.,Shanghai 200120,China)
出处
《材料保护》
2025年第8期101-107,共7页
Materials Protection
基金
国家杰出青年科学基金(51925403)
国家自然科学基金(22378309)。
关键词
微纳结构
化学改性
光固化
疏水疏油
micro-nano structure
chemical modification
photo-curing
hydrophobic and oleophobic
