出版日期：2014-05-01 00:00:00

著者：Chao-Ching Chang; Tai-Yueh Oyang; Yu-Chen Chen; Feng-His Hwang; Liao-Ping Cheng

著錄名稱、卷期、頁數：Journal of Coatings Technology and Research 11(3), pp.381-386

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%.

關鍵字：Colloidal silica;Hard coating;UV-curing;Plastic substrate;Hydrophobicity

語言：en_US

ISSN：1945-9645 1935-3804

期刊性質：國外

收錄於：SCI

審稿制度：否

國別：USA

出版型式：電子版,紙本