Influence of Particle Size of Titanium Dioxide on UV-ray Shielding Property [Translated]<sup>†</sup>

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  • Sakamoto Masashi
    Ishihara Sangyo Kaisha,Ltd.,Research & Development Laboratory
  • Okuda Haruo
    Ishihara Sangyo Kaisha,Ltd.,Research & Development Laboratory
  • Futamata Hideo
    Ishihara Sangyo Kaisha,Ltd.,Research & Development Laboratory
  • Sakai Akihito
    Ishihara Sangyo Kaisha,Ltd.,Research & Development Laboratory
  • Iida Masaki
    Ishihara Sangyo Kaisha,Ltd.,Research & Development Laboratory

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説明

The influence of particle size (0.019-0.24 μm) of TiO2 on UV-ray shielding capability was studied. <br>UV-ray shielding capability of TiO2 depended on the wavelength. That is, the smaller the primary particle size was, the greater its shielding capability against around 300 nm of UV-B range was. On the contrary, for the shielding capability against around 350 nm of UV-A range, an optimum primary particle size was found. Furthermore, the optimum primary particle size varied, depending on dispersion strength of the particles in a paint.<br><br>† This report was originally printed in Journal of the Japan Society of Colour Material 68(4), 203-210 (1995) in Japanese, before being translated into English by KONA Editorial Committee with the permission of the editorial committee of the Japan Society of Colour Material.

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