대한치과기공학회지 (Journal of Technologic Dentistry)
- 제29권1호
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- Pages.121-131
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- 2007
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- 1229-3954(pISSN)
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- 2288-5218(eISSN)
저온 경화형 초친수성 티타니아 하이브리드 졸의 제조와 친수성 특성 평가에 관한 연구
Superhydrophilicity of Titania Hybrid Coating Film Imposed by UV Irradiation without Heat-treatment
- Kim, Won-Soo (Dept. of dental labolatory Technology, Daejeon Health Sceinces College) ;
- Park, Won-Kyu (Dept. of Material Engineering, Graduate School of Paichai University)
- 발행 : 2007.07.10
초록
A preparation process's conditions of aqueous sol which contains anatase-type nano titania particles with photocatalyic properties was established by using Yoldas process, so called, DCS(Destabilization of Colloidal Solution) process in this study. And crystal size change and phase transformation of titania particles in aqueous titania sol depending on reaction conditions was investigated by a light scattering method and XRD analysis of frozen dried powders, respectively. This sol with photo catalytic nano titania particles was used to the following hydrophilic hybrid coating film's fabrication and its properties was evaluated. Subsequently, for coating film using the above mentioned aqueous titania sol, non-aqueous titania sol was prepared without any chemical additives and its time stability according to aging time was investigate. By using the above mentioned aqueous titania sol and non-aqueous sol, a complex oxide coating sol for metal and ceramic substrate and a organic-inorganic hybrid coating sol for polymer substrate was prepared and it's hydrophilicity depending on UV irradiation conditions was evaluated. As a conclusions, the following results were obtained. (1)Aqueous titania sol The average particle size of titania in formed aqueous titania sol was distributed between 20