Toughening studies on an ABS/PC blend-modified epoxy resin system

Natarajan, Kandasamy and Rao, RMVGK (1994) Toughening studies on an ABS/PC blend-modified epoxy resin system. High Performance Polymer, 6. pp. 241-248. ISSN 0954-0083

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Abstract

Studies were carried out on the toughening of a bifunctional epoxy (diglycidyl ether of bisphenol-A) matrix system with an ABS/PC thermoplastic blend. The thermoplastic blend was incorporated into the epoxy matrix by particle dispersian and melt-mix methods. The unmodified and modified epoxy resin systems were cured with a stoichiometric quantity of diamino diphenyl methane (DDM). The cured castings were characterized by measurement of glass transition temperature (Tg) by DSC, evaluation of plane strain fracture toughness (Kic) by three-point bending tests and SEM analysis of non-etched and base/acid etched fracture surfaces. In general ABS/PC-modified (15% w/w) epoxy-resin-cured systems showed enhanced fracture toughness without lowering the glass transition temperature. The melt-mix method yielded higher fracture toughness than the particle dispersion method; this conclusion was also supported by scanning electron micrographs.

Item Type: Article
Uncontrolled Keywords: Toughening, ABS/PC thermoplastic blend, Epoxy resin systems
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 15 Dec 2011 05:13
Last Modified: 15 Dec 2011 05:13
URI: http://nal-ir.nal.res.in/id/eprint/10152

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