Preparation and Infrared Absorption Spectra of Silica Coating Films

概要

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Silica films were prepared by the dip-coating method from a stable hydrosol which was obtained by the hydrolysis of tetraethyl orthosilicate. The stable thin films, in the hues of the rainbow, having thickness of 0.9-4.6μm were formed on substrates, such as stainless steel, glass and quartz plates. Infrated absorption of the films prepared at various pulling-up rates was measured. Skeletal vibrational absorption of silica were clearly found. From the intensity change of the absorptions at 1210, 1140 and 1060 cm<SUP>-1</SUP> which were assigned to the skeletal Si-O vibrations, it was found that the stability of the coated film depended upon the rate of pulling-up and the degree of polymerization of the silica hydrosol.
Japan Society of Colour Materialの論文