【摘要】 应用硅烷偶联剂(SG-Si900)烷烃链的空间位阻效应,以SG-Si900、钛酸丁酯和正硅酸乙酯(TEOS)为主要原料,经水解、恒温缩聚、蒸馏等工艺,合成钛-硅烷复合功能树脂,然后将树脂用水稀释,采用提拉法在玻璃表面制备超级亲水性薄膜;研究了SG-Si900/TEOS、硅钛摩尔比、复合树脂粘度、涂膜次数、固化温度等因素对薄膜亲水性能的影响,及薄膜的紫外线照射行为和波长在200～800nm范围内薄膜的透光率,并应用扫描电子显微镜研究了薄膜表面的微观结构和薄膜断层厚度。结果表明,制备复合树脂超亲水薄膜最佳工艺条件为:当哇钛摩尔比为9,SG-Si900/TEOS为1时,制备的钛硅烷复合超亲水性树脂经3次涂膜,200℃,1h固化,可形成与水接触角为0℃的超级亲水薄膜,膜厚约为80nm。更多还原

【Abstract】 The self-cleaning thin films were made of the organic Ti-Si compound resins which were prepared by hydrolysis, polycondensation and distillation of organic silane coupling agent (SG-Si900), titania alkoxide and tetraethoxysilanes (TEOS) in the presence of acetic acid, with dipping-drawing technology on the surface of glass. Further study focused on the factors effecting capability of the self-cleaning thin films. Studied found that the length of chain of the organic Ti-Si compound resins can be controlled by the blocking function of the SG-Si900, and the hydrophilic ability and the adhesion of the thin films of the compound resin can be improved by increasing the content of the TEOS, controlling the content of the SG-Si900 and Ti, rising the heat-treatment temperature and painting times, etc. Hence a conclusion can be drawn, when Si/Ti is 9, SG-Si900/TEOS is 1, painting times is 3, heat-treatment temperature is 200℃, thickness of the thin film is about 80nm, the capability of the thin film of the compound resin is excellent, there is 0 degree for it with water without presence of ultraviolet radiation.更多还原