Morphology and mechanical properties of dual-curable epoxyacrylate hybrid composites
學年 103
學期 2
出版（發表）日期 2015-04-15
作品名稱 Morphology and mechanical properties of dual-curable epoxyacrylate hybrid composites
作品名稱（其他語言）
著者 Yu-Chieh Su; Trong-Ming Don
單位
出版者
著錄名稱、卷期、頁數 Journal of Applied Polymer Science 132(15), 41820
摘要 A dual-curable epoxyacrylate (EA) oligomer with one epoxide group and one vinyl group at each end was synthesized for the application as adhesive sealant in the liquid crystal display panels. However, after UV and thermal cure, the EA resin was brittle with a poor resistance to crack initiation and propagation. Liquid rubbers with different functional end groups were thus tried as toughening agents for the EA resin. Among all the rubber-toughened EAs, the EA-V5A5 added with vinyl-terminated and amino-terminated butadiene-acrylonitrile copolymers (VTBN and ATBN) each at 5 phr had the highest fracture toughness, tensile strength, and elongation at break but a lower initial modulus. To raise the modulus, submicron-sized silica particles (∼170 nm) with surface vinyl functional groups were further added to the EA-V5A5 to prepare the hybrid composites. Because of interfacial chemical bonding provided by the surface vinyl functional groups, both modulus and fracture toughness were increased by adding silica particles, without any appreciable decrease in extensibility. For the hybrid composite at 20 phr silica particles, the initial modulus, fracture toughness, and fracture energy were raised by 10.3, 100, and 267%, respectively, when compared to the neat epoxyacrylate. Owing to their strong interfacial bonding, the increase of fracture toughness was mainly due to the crack deflection and bifurcation on silica particles, in addition to the rubber particle bridging and tearing as evidenced by SEM pictures on the fracture surface.
關鍵字 mechanical properties;composites;adhesives;elastomers
語言 en_US
ISSN 1097-4628
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Trong-Ming Don
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104526 )