纳米SiO2复合粒子/有机硅低聚物透明超疏水复合涂层的制备及其性能
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西安建筑科技大学机电工程学院

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中图分类号:

TB383;TB332

基金项目:

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)


Preparation and properties of transparent superhydrophobic composite coatings of nano SiO2 composite particles/organosilicon oligomers
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1.School of Mechanical and Precision Instruent Engineering,Xi’an University of Technology,;2.School of mechanical and electrical engineering,Xi''an University of architecture and technology,Xi''an;3.School of mechanical and electrical engineering,Xi&4.#39;5.&6.an University of architecture and technology,Xi&7.an

Fund Project:

General Program of the National Natural Science Foundation of China (51775431)

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    摘要:

    本文以Stober法制备的胶体SiO2粒子与粉体SiO2粒子结合的SiO2复合粒子在玻璃基底构建粗糙表面,以三乙氧基甲基硅烷(MTES)与正硅酸乙酯(TEOS)为前聚体制备的酸性有机硅低聚物作为粘接剂,使用偶联剂KH540与氟硅烷PFDT进行改性,通过喷涂法在玻璃基底上制备出SiO2复合粒子/酸性有机硅低聚物复合透明超疏水涂层,然后探究SiO2复合粒子、酸性有机硅低聚物、偶联剂KH540以及氟硅烷PFDT对复合涂层的影响。研究表明:当SiO2复合粒子由粒径为110 nm的胶体SiO2粒子与粒径为50 nm的粉体SiO2粒子两种粒子组成,SiO2复合粒子溶液与酸性有机硅稀释液的混合质量比为4:1,添加偶联剂KH540与氟硅烷PFDT的质量比为混合液的1%时,复合涂层在可见光波长范围内透光率可达88%,静态接触角能达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,为透明超疏水涂层的制备提供一种简便、低成本方案。

    Abstract:

    In this paper, SiO2 composite particles prepared by Stober method combining colloidal SiO2 particles and powder SiO2 particles are used to construct rough surface on glass substrate, acidic organosilicon oligomer prepared by prepolymerization of triethoxymethylsilane (MTES) and ethyl orthosilicate (TEOS) is used as bonding agent, modified by using coupling agent KH540 and fluorosilane PFDT, and SiO2 composite particles/acidic organosilicon oligomer composite superhydrophobic coating is prepared on glass substrate by spraying method. The SiO2 composite particle/acidic silicone oligomer composite superhydrophobic coating was prepared on glass substrate by spraying method, and then the effects of SiO2 composite particle, acidic silicone oligomer, coupling agent KH540 and fluorosilane PFDT on the composite coating were investigated. The study shows that when the SiO2 composite particles consist of two kinds of particles, namely, colloidal SiO2 particles with a particle size of 110 nm and powder SiO2 particles with a particle size of 50 nm, and the mass ratio of SiO2 composite particles solution to acidic silicone diluent is 4:1, and the mass ratio of coupling agent KH540 to fluorosilane PFDT is 1% of the mixture, the composite coating can achieve a light transmission rate of 88% in the visible light wavelength range. The composite coating can reach 88% light transmittance in the visible wavelength range, 155° static contact angle, and maintain superhydrophobicity after 60 cm abrasion on 800-grit sandpaper, with good self-cleaning property, providing a simple and low-cost solution for the preparation of transparent superhydrophobic coatings.

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李冀,郭浩彬,叶向东,郗长青.纳米SiO2复合粒子/有机硅低聚物透明超疏水复合涂层的制备及其性能[J].精细化工,2024,41(3):

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  • 收稿日期:2023-04-18
  • 最后修改日期:2023-08-12
  • 录用日期:2023-06-27
  • 在线发布日期: 2024-03-07
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