教師資料查詢 | 類別: 期刊論文 | 教師: 鄭廖平 CHENG, LIAO-PING (瀏覽個人網頁)

標題:Preparation of polymer/silica hybrid hard coatings with enhanced hydrophobicity on plastic substrates
學年100
學期1
出版(發表)日期2012/01/01
作品名稱Preparation of polymer/silica hybrid hard coatings with enhanced hydrophobicity on plastic substrates
作品名稱(其他語言)
著者Chang, Chao-Ching; Oyang, Tai-Yueh; Hwang, Feng-Hsi; Chen, Ching-Chung; Cheng, Liao-Ping
單位淡江大學化學工程與材料工程學系
出版者Amsterdam: Elsevier BV * North-Holland
著錄名稱、卷期、頁數Journal of Non-Crystalline Solids 358(1), pp.72–76
摘要In this study, an easy method to increase hydrophobicity of the polymer/silica hybrid coating was demonstrated. UV-curable nano-sized colloidal silica was synthesized and surface-modified both by a coupling agent, 3-(trimethoxysilyl)propyl methacrylate (MSMA), and a capping agent, trimethyethoxysiliane (TMES). The formed particles were introduced into the poly(2-hydroxyethyl methacrylate) (PHEMA) matrix to yield PHEMA/silica hybrid hard coatings on plastic substrates via a UV-curing process. Differential scanning calorimetric (DSC) analyses of the hybrids indicated increases of the glass transition temperature (Tg) with increasing silica content in the hybrids; in general, an increase of 23 °C could be achieved for hybrids doped with 15 wt.% silica. Thermal decomposition temperature (Td), as measured by the thermal gravimetric analyzer (TGA), was found to depend on the silica content in a trend similar to that on Tg. Specifically, a large increase of 25 °C was observed when the sample contained 15 wt.% silica. The pencil hardness of the PHEMA/silica hybrids coated on poly(methylmethacrylate) (PMMA) substrates can reach 5H, in comparison with 2H for pure PHEMA coating. Abrasion resistance was enhanced when silica nanoparticles were incorporated. Furthermore, due to the incorporation of TMES, hydrophobicity of the hybrid coating increased considerably as the TMES content was increased. In the extreme case, a hard surface with a water contact angle (92°) has been obtained.
關鍵字Colloidal silica; Hard coating; UV-curing; Plastic substrate; Hydrophobicity
語言英文
ISSN0022-3093
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者Cheng, Liao-Ping
審稿制度
國別荷蘭
公開徵稿
出版型式紙本
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