摘要
利用TiO2的光催化活性来改善涂料涂层的耐沾污性能是近年来的研究热点。采用水热法制备亲水型纳米TiO2和疏水型纳米TiO2,并采用XRD和TEM对所制备材料进行表征,结果表明:二者均为锐钛型TiO2,其中亲水型TiO2的粒径约为40nm,疏水型TiO2的粒径约为7nm。将所制备的TiO2喷涂在涂料表面,分别制得超亲水型和超疏水型纳米涂层,利用接触角测定仪测定纳米涂层的亲水角度,探讨水接触角对涂料耐沾污性能的影响。结果表明:超亲水涂层和超疏水涂层均能够较明显地改善涂料的耐沾污性能,而超疏水涂层的耐沾污性能优于超亲水涂层。
To improve the coating stain resistant performance using the photocatalytic activity of TiO2 is a hot research topic in recent years. In the article, hydrophilic TiO2 and hydrophobic TiO2 are prepared by hydrothermal method. The samples are characterized by X-ray diffraction(XRD) and transmission electron microscope(TEM). The results show that both the hydrophilic-TiO2 and hydrophobic-TiO2 are anatase,and the particle size of hydrophilic-TiO2 is 40 nm,while hydrophobic-TiO2is only 7 nm. Moreover,the samples are employed for super-hydrophilic and super-hydrophobic coatings, respectively. The contact angle measurement is used to characterize the as-synthesized TiO2 coatings. The effect of the water contact angle on the contamination resistance is investigated. It is shown that the synthesized the hydrophilic TiO2 and hydrophobic TiO2 coatings both can remarkably improve the contamination resistance of the paint and the latter exhibited the better performance.
出处
《重庆大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2014年第3期53-57,共5页
Journal of Chongqing University
基金
高等学校博士学科点专项科研基金资助项目(20110191120014)
关键词
纳米TIO2
亲水涂膜
疏水涂膜
水敏感性
耐沾污性
nano-TiO2
hydrophilic coatings
hydrophobic coatings
water sensitivity
contamination resistance