摘要
将Stöber法制备的胶体SiO_(2)粒子溶液与粉体SiO_(2)粒子进行物理共混得到SiO_(2)复合粒子溶液,以三乙氧基甲基硅烷(MTES)与正硅酸乙酯(TEOS)为前驱体制备的酸性有机硅低聚物为黏结剂,使用3-氨丙基三甲氧基硅(KH540)与全氟癸基三甲基氧硅(PFDT)对其进行改性,通过喷涂法在玻璃基底上制备出SiO_(2)复合粒子/酸性有机硅低聚物复合透明超疏水涂层。考察了SiO_(2)复合粒子、酸性有机硅低聚物、KH540及PFDT对复合涂层的影响。结果表明,当SiO_(2)复合粒子溶液由粒径为110 nm的胶体SiO_(2)粒子溶液与粒径为50 nm的粉体SiO_(2)粒子(其用量为胶体SiO_(2)粒子溶液质量的1%)组成、SiO_(2)复合粒子溶液与酸性有机硅稀释液质量比为4∶1、KH540与PFDT的添加量(以混合液总质量计,下同)均为1%时,制备的复合涂层在可见光波长范围内透光率可达88%,静态接触角达155°,在800目砂纸上磨损60 cm后仍能保持超疏水性能,具有良好的自清洁性。
SiO_(2)composite particles solution was firstly prepared from physical blending of colloidal SiO_(2)particles solution,which was obtained via Stöber method,with powder SiO_(2)particles and then modified by 3-aminopropyl trimethoxysilane(KH540)and perfluoro-decyl trimethyloxysilane(PFDT).SiO_(2)composite particles/acidic organosilicon oligomer composite superhydrophobic coating was synthesized by spraying the modified SiO_(2)composite particles solution on glass substrate using acidic organosilicon oligomer prepared from polymerization of triethoxymethylsilane(MTES)and ethyl orthosilicate(TEOS)as bonding agent.The influence of SiO_(2)composite particles,acidic silicone oligomer,KH540 and PFDT on the composite coating were further investigated.The results showed that when the SiO_(2)composite particles solution consisting of colloidal SiO_(2)particles with a particle size of 110 nm and 50 nm powder SiO_(2)particles(The dosage was 1%of the mass of colloidal SiO_(2)particles solution),the mass ratio of SiO_(2)composite particles solution to acidic silicone diluent was 4∶1,and the addition amount of both KH540 and PFDT was 1%of the total mass of mixed solution,the thus prepared composite coating could achieve light transmittance of 88%in the visible light wavelength range with a static contact angle of 155°,and maintain superhydrophobicity after 60 cm abrasion on 800 mesh sandpaper,with good self-cleaning property.
作者
李冀
郭浩彬
叶向东
郗长青
王权岱
LI Ji;GUO Haobin;YE Xiangdong;XI Changqing;WANG Quandai(School of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,Shaanxi,China;Shaanxi Key Laboratory of Nanomaterials and Technology,Xi'an University of Architecture and Technology,Xi'an 710055,Shaanxi,China;School of Mechanical and Precision Instruent Engineering,Xi'an University of Technology,Xi'an 710048,Shaanxi,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2024年第3期572-579,共8页
Fine Chemicals
基金
国家自然科学基金面上项目(51775431)
陕西省教育厅重点实验室科学基金项目(17JS072)
陕西省自然科学基金面上项目(2019JM-566)。
关键词
纳米SiO_(2)
透明超疏水涂层
有机硅低聚物
制备
性能
功能材料
nano SiO_(2)
transparent superhydrophobic coatings
organic silicon oligomer
preparation
properties
functional materials
