TOUGHENING MECHANISM FOR A RUBBER-TOUGHENED EPOXY-RESIN WITH RUBBER MATRIX INTERFACIAL MODIFICATION

NCUIR > Engineering College > National Central University Department of Chemical & Materials Engineering > journal & Dissertation > Item 987654321/26760

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26760

Title:	TOUGHENING MECHANISM FOR A RUBBER-TOUGHENED EPOXY-RESIN WITH RUBBER MATRIX INTERFACIAL MODIFICATION
Authors:	CHEN,TK;JAN,YH
Contributors:	化學工程與材料工程學系
Keywords:	ELASTOMER-MODIFIED EPOXIES;PARTICULATE COMPOSITES;MORPHOLOGY;TOUGHNESS;FRACTURE;AMINE;DEFORMATION;BEHAVIOR;PHASE
Date:	1991
Issue Date:	2010-06-29 17:36:08 (UTC+8)
Publisher:	中央大學
Abstract:	For a rubber-toughened piperidine-DGEBA epoxy resin, the interface between the rubber particle and the epoxy resin matrix was modified by an epoxide end-capped carboxyl terminated butadiene and acrylonitrile random copolymer (CTBN). The end-capping epoxides used were a rigid diglycidyl ether of bisphenol-A (Epon 828), a short-chain flexible diglycidyl ether of propylene glycol (DER 736), and a long-chain flexible diglycidyl ether of propylene glycol (DER 732). The microstructures and the fracture behaviour of these rubber-modified epoxy resins were studied by transmission electron microscopy and scanning electron microscopy. Their thermal and mechanical properties were also investigated. In the rubber-modified epoxy resins, if the added CTBNs were end-capped by a flexible diglycidyl ether of propylene glycol (DER 732 or DER 736) before curing, the interfacial zone of the underformed rubber particle, the degree of cavitation of the cavitated rubber particle on the fracture surface and the fracture energy of the toughened epoxy resin were all significantly increased. The toughening mechanism based on cavitation and localized shear yielding was considered and a mechanism for the interaction between cavitation and localized shear yielding that accounts for all the observed characteristics is proposed.
Relation:	JOURNAL OF MATERIALS SCIENCE
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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