EFFECTS OF MATRIX DUCTILITY ON RUBBER MATRIX INTERFACIALLY MODIFIED EPOXY-RESINS

NCUIR > Engineering College > National Central University Department of Chemical & Materials Engineering > journal & Dissertation > Item 987654321/26725

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26725

Title:	EFFECTS OF MATRIX DUCTILITY ON RUBBER MATRIX INTERFACIALLY MODIFIED EPOXY-RESINS
Authors:	CHEN,TK;SHY,HJ
Contributors:	化學工程與材料工程學系
Keywords:	ELASTOMER-MODIFIED EPOXIES;TOUGHENING MECHANISMS;FRACTURE;DEFORMATION
Date:	1992
Issue Date:	2010-06-29 17:35:15 (UTC+8)
Publisher:	中央大學
Abstract:	The effects of changing matrix ductility are studied for rubber-toughened epoxy resins with modification of the rubber/matrix interfacial zone. The interfacial modification results in a large and more deformable interfacial zone, which gives rise to a further increased fracture toughness. Various microstructural parameters and the deformation and fracture behaviours of the rubber-toughened epoxy resins are quantified. Epoxy resins with moderate ductility are more effective in increasing further toughness after modification of the rubber/matrix interfacial zone. The further increased toughness results solely from the increased cavitation that arises in the modified rubber/matrix interfacial zone. On the other hand, the size of the plastic deformation zone in the vicinity of the crack tip is independent of the degree of rubber cavitation, but it is significantly increased by multiple but localized shear yielding, caused by the increase in matrix ductility. In addition, the degree of multiple but localized shear yielding is independent of the degree of cavitation in the present investigation.
Relation:	POLYMER
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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