摘要
通过一锅法,在碱性体系和表面活性剂存在的条件下,以正丙基三甲氧基硅烷作为前驱体制备出二氧化硅水溶胶,再用γ-(2,3-环氧丙氧)丙基三甲氧基硅烷和十六烷基三甲氧基硅烷一锅改性,获得了改性二氧化硅水溶胶.经过传统的浸轧烘工艺,将其应用于棉织物上制备超疏水棉织物.用扫描电子显微镜观察棉织物的表面形貌,用OCA 20型视频光学接触角测量仪测试织物表面的润湿性能,用耐洗色牢度测试仪测试织物的疏水持久性.结果表明,改性织物表面的水滴接触角为160°,并且其超疏水性能可以耐10次家庭洗涤.
Hydrophobic silicas were synthesized via a one-pot method with propyltrimethoxysilane as precursor in the presence of base catalyst and surfactant,followed by modification with glycidoxypropyltrimethoxysilane and hexadecyltrimethoxysilane in a three-necked flask.Cotton fabrics were coated with the as prepared silica hydrosols using a traditional dip-padcure method.The surface morphology of the cotton fabrics was characterized by scanning electron microscope.The wettability of the fabrics was investigated by using an OCA 20 contact angle system.And the durability of the superhydrophobicity was evaluated by using a laundering machine.Results showed that superhydrophobic cotton fabrics with water contact angle of 160°were fabricated.And the superhydrophobicity could withstand ten times domestic laundering.
出处
《陕西科技大学学报（自然科学版）》
2015年第1期1-5,共5页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51372146)
教育部新世纪优秀人才支持计划项目(NCET-12-1042)
教育部科学技术研究重点项目(212171)
陕西省科技厅重大科技创新专项资金计划项目(2011ZKC05-7)
教育部高等学校博士学科点基金项目(20136125110003
20116125110002)
关键词
一锅法
疏水二氧化硅
超疏水
棉织物
one-pot
hydrophobic silicas
superhydrophobic
cotton fabrics
