首页|A robust method for the development of mechanically, thermally stable anti-reflective and self-cleaning coatings through in-situ formation of hierarchical raspberry-like mesoporous nanoparticles
A robust method for the development of mechanically, thermally stable anti-reflective and self-cleaning coatings through in-situ formation of hierarchical raspberry-like mesoporous nanoparticles
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NSTL
Elsevier
A robust formulation was developed to produce anti-reflective and self-cleaning coatings, consisting of hierarchical mesoporous silica, modified mesoporous titania nanoparticles and siloxane resin along with other ingredients. The hierarchical arrangement of nanoparticles by the process of self-assembly along with the polymerization of resin developed hierarchical micro and nanoscale structure on the coated surface because of the in-situ generation of raspberry-like particles during film formation. A systematic study was carried out to investigate the effect of additives on the microstructure, optical property and wettability of the coatings. The optimum composition of the coating has anti-reflective property with maximum transmittance of 99.6% (364 nm) with an absolute increase in transmittance of 5.3% in the wavelength range of 360-600 nm with a contact angle of 140 degrees with water. The addition of Hexamethyldisilazane (HMDS) into the formulation enhanced the hydrophobicity of the coatings by extending the formation of more micro-nano scale structure. Moreover, developed coatings have 5B adhesion, significant humidity resistance, passed the 3H pencil hardness test and are thermally stable up to 250 degrees C. The developed process is also suitable for low temperature organic substrates, feasible for scale-up production and the stable formulation can be available in a two-pack system. (c) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
NSTL
Elsevier
