Synthesis of Modified Silica Spheres Used for the Preparation of Dual Ultraviolet- and Thermo-cured Epoxyacrylate/Silica Composites
學年 101
學期 1
出版（發表）日期 2012-11-01
作品名稱 Synthesis of Modified Silica Spheres Used for the Preparation of Dual Ultraviolet- and Thermo-cured Epoxyacrylate/Silica Composites
作品名稱（其他語言）
著者 Yu-Chieh Su; Liao-Ping Cheng; Don, Trong-Ming
單位 淡江大學化學工程與材料工程學系
出版者 Hoboken: John Wiley & Sons, Inc.
著錄名稱、卷期、頁數 Polymer Engineering and Science 52(11), pp.2462–2472
摘要 To investigate the interfacial effect on properties of epoxyacrylate–silica composites, submicron-sized silica spheres were synthesized by sol–gel reaction under a basic environment and their surfaces were endowed with vinyl functional groups by further modification with 3-methacryloxypropyl trimethoxy silane. The pure silica (PS) and the modified silica (MPS) spheres were characterized by Fourier transform infrared, 29Si- and 13C-nuclear magnetic resonance (NMR), scanning electron microscope (SEM), and particle size analyzer. The silica spheres were then added to the presynthesized difunctional epoxyacrylate resin with one vinyl group and one epoxide group at each end, in addition to the photo- and thermo-curing agents. After cure, thermal and mechanical properties of the obtained epoxyacrylate–silica composites were measured and compared. Tensile mechanical properties including initial modulus, ultimate tensile strength, and elongation at break, as well as the fracture energy of the epoxyacrylate–silica composite were all increased by increasing the content of silica spheres. Moreover, the composites filled with MPS had stronger interfacial strength between silica sphere and matrix than those with PS and thus exhibited an additional increase of tensile mechanical properties and fracture toughness. The increase of fracture toughness was owing to the crack deflection and particle–matrix debonding as evidenced by SEM pictures on the fracture surface.
關鍵字
語言 en_US
ISSN 1548-2634
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Trong-Ming Don
審稿制度 是
國別 USA
公開徵稿
出版型式 電子版
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