SOME FACTORS AFFECTING THE FILM FORMING PROCESS OF ANTI-FOG COATING ON OPTICAL GLASS SURFACES
165 viewsKeywords:
Optical glass; Hydrophobic coating; Silica-based compoundsAbstract
The paper introduces the results of research on the number of factors affecting the film forming process and the properties of an organic silica-based anti-fog coating on optical glass surfaces. Chemical bondings, water contact angle, thickness, and optical transmission of the coating film were thoroughly characterized by using Atomic Force Microscopy (AFM), contact angle and surface tension measurement, UV-2550 spectrophotometer, and some other physical methods. The obtained results show that using the brush coating method with coating condition: at room temperature and after 2 hours of dry-heat treatment, the properties of the optical material were virtually unchanged, and the coated surface has a homogeneous structure with a thickness of 0,0113 µm, a water contact angle of higher than 115o.
References
[1]. “Tài liệu kỹ thuật bảo quản”, Viện Kỹ thuật quân sự, 1980.
[2]. TCKT3514-57, “Chỉ tiêu kỹ thuật đầu vào cho sản xuất kính ngắm quang học BK-3”, Xí nghiệp X23/Z199/Tổng cục Công nghiệp Quốc phòng.
[3]. C. T. Dũng, V. T. H. Huệ, V. M. Thành, N. T. Nhàn, Đ. T. H. Vân, L. V. Thụ, “Phân tích tính chất màng phủ kỵ nước cho kính quang học sử dụng trong môi trường biển đảo”, Tạp chí Nghiên cứu khoa học và công nghệ quân sự, p 100-108, 4(2018).
[4]. Xinhui FANG, Zhijia YU, Xiangyu SUN, Xinhua LIU, Futao QIN, “Formation of superhydrophobic boehmite film on glass substrate by Sol-Gel method”, Higher Education Press and Springer-Verlag, 2009.
[5]. S. A. Mahadik, M. S. Kavale, S. K. Mukherjeeb, A. V. Rao, “Transparent Superhydrophobic silica coatings on glass by sol–gel method”, Applied Surface Science 257, 333–339(2010).
[6]. Shing-Dar Wang, Shih-Shiang Luo, “Fabrication of transparent superhydrophobic silica-based film on a glass substrate”, Applied Surface Science, Vol. 258, 5443-5450 (2012).
[7]. Jinbin Lin, Hongling Chen, Ting Fei, Chang Liu, Jinlong Zhang, “Highly transparent and thermally stable superhydrophobic coatings from the deposition of silica aerogels”, Applied surface science, 2013.
[8]. D. Yang, J. Li, Y. Xu, D. Wu, F. Deng, “Direct formation of hydrophobic silica-based micro/mesoporous hybrids from polymethylhydrosiloxane and tetraethoxysilane”, Microporous and Mesoporous Material, 95, 180-186 (2006).
[9]. S. D. Bhagat, Y. H. Kim, Y. S. Ahn, “Room temperature synthesis of water repellent silica coatings by the dip coat technique”, Applied Surface Science 253, 2217–2221 (2006).
[10]. X. Zhang, F. Shi, J. Niu, Y. G. Jiang, Z. Q. Wang, “Superhydrophobic Surfaces: From Structural Control to Functional Application”, Journal of Materials Chemistry, Vol. 18, No. 6, 621-633 (2008).
[11]. Hitoshi Ogihara, Jing Xie, Tetsuo Saji, “Controlling surface energy of glass substrates to prepare superhydrophobic and transparent films from silica nanoparticle suspensions”, Journal of Colloid and Interface Science, 437(1), 24-27 (2015).
[12]. Cristian Petcu, Violeta Purcar, Cătălin-Ilie Spătaru, Elvira Alexandrescu, Raluca Şomoghi, Bogdan Trică, Sabina Georgiana Niţu, Denis Mihaela Panaitescu, Dan Donescu and Maria-Luiza Jecu, “The Influence of New Hydrophobic Silica Nanoparticles on the Surface Properties of the Films Obtained from Bilayer Hybrids”, Nanomaterials, 7(2), 47-56 (2017).
