<b>UV Shield Coatings Composed of Silsesquioxane-Type Transparent Epoxy Resin Loaded with ZnO Nanoparticle </b>

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  • Ochi Mitsukazu
    Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University
  • Yamauchi Kenta
    Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University
  • Amano Natsumi
    Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University
  • Harada Miyuki
    Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University

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Other Title
  • <b>ZnO ナノ粒子を分散したシルセスキオキサン型エポキシ樹脂から </b><b>なる透明の紫外線遮蔽コーティング膜 </b>
  • ZnOナノ粒子を分散したシルセスキオキサン型エポキシ樹脂からなる透明の紫外線遮蔽コーティング膜
  • ZnO ナノ リュウシ オ ブンサン シタ シルセスキオキサンガタ エポキシ ジュシ カラ ナル トウメイ ノ シガイセン シャヘイ コーティングマク

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<p>The effects of UV irradiation on the transparent silsesquioxane (SQ) -type epoxy coatings with or without a UV shielding material were investigated. The changes in the chemical composition of the coating surfaces due to the exposure to UV light were evaluated by FT-IR (ATR) and UV/visible spectroscopies and XPS analysis. Thus, it was clearly shown that the organic components in the surface layer of the cured SQ-type epoxy coatings were rapidly decomposed by the UV irradiation and then removed from the coatings. In addition, it was confirmed by XPS measurements that the chemical composition of the residual coatings was almost the same as that of the quartz glass. The UV irradiation to the transparent SQ-type epoxy coatings containing the ZnO nanoparticles as a UV shielding material converted the 0.2 μm of the thickness to the SiO2 inorganic networks including the UV shielding material. The glassy surface including the ZnO nanoparticles showed excellent UV-shield properties. When the PET film which was covered with the transparent SQ-type epoxy resin with ZnO nanoparticles was exposed to the UV-irradiation, the PET surface was not affected by the UV-irradiation. Namely, the SQ-type epoxy coatings including ZnO nanoparticles effectively act as a transparent protective coating for polymer materials against UV irradiation.</p>

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