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- 저자 : Mamata Pradhan (검색결과 1 건)
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Mamata Pradhan 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.105 No.-
A robust formulation was developed to produce anti-reflective and self-cleaning coatings, consisting ofhierarchical mesoporous silica, modified mesoporous titania nanoparticles and siloxane resin along withother ingredients. The hierarchical arrangement of nanoparticles by the process of self-assembly alongwith the polymerization of resin developed hierarchical micro and nanoscale structure on the coated surfacebecause of the in-situ generation of raspberry-like particles during film formation. A systematicstudy was carried out to investigate the effect of additives on the microstructure, optical property andwettability of the coatings. The optimum composition of the coating has anti-reflective property withmaximum transmittance of 99.6% (364 nm) with an absolute increase in transmittance of 5.3% in thewavelength range of 360–600 nm with a contact angle of 140 with water. The addition ofHexamethyldisilazane (HMDS) into the formulation enhanced the hydrophobicity of the coatings byextending the formation of more micro-nano scale structure. Moreover, developed coatings have 5Badhesion, significant humidity resistance, passed the 3H pencil hardness test and are thermally stableup to 250 C. The developed process is also suitable for low temperature organic substrates, feasiblefor scale-up production and the stable formulation can be available in a two-pack system.
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