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    題名: Preparation of hydrophobic nanosilica-filled polyacrylate hard coatings on plastic substrates
    作者: Chao-Ching Chang;Tai-Yueh Oyang;Yu-Chen Chen;Feng-His Hwang;Liao-Ping Cheng
    關鍵詞: Colloidal silica;Hard coating;UV-curing;Plastic substrate;Hydrophobicity
    日期: 2014-05-01
    上傳時間: 2016-08-15
    出版者: Springer New York LLC
    摘要: Colloidal silica nanoparticles synthesized from tetraethoxysilane via a sol–gel process were
    surface-modified first by 3-(trimethoxysilyl)propyl
    methacrylate, and then by trimethylethoxysilane
    (TMES). The former agent acts both as a coupling
    agent and as a C=C provider, whereas the latter agent
    is used to prevent particle aggregation and to increase
    hydrophobicity of the coating. The modified silica
    particles were UV-cured together with the monomer,
    2-hydroxyethyl methacrylate (2-HEMA), and the
    crosslinking agent, dipentaerythritol hexaacrylate
    (DPHA), to form highly transparent hard coatings on
    plastic (PMMA and PET) substrates. Both differential
    scanning calorimetric and thermal gravimetric analyses
    of the hybrid materials indicated enhanced thermal
    stability with respect to the neat HEMA–DPHA
    copolymer. Furthermore, due to the incorporation of
    TMES, hydrophobicity of the hybrid coating increased
    considerably with increasing modified silica content. In
    the extreme case, an antiabrasive hard coating (7H on
    PMMA) with a water contact angle of 99 was obtained at the silica content of 15 wt%.
    關聯: Journal of Coatings Technology and Research 11(3), pp.381-386
    DOI: 10.1007/s11998-013-9540-0
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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