The role of the epoxy resin : curing agent ratio in composite interfacial strength by single fibre microbond test

Minty, Ross and Thomason, James and Petersen, Helga (2015) The role of the epoxy resin : curing agent ratio in composite interfacial strength by single fibre microbond test. In: 20th International Conference on Composite Materials, 2015-07-19 - 2015-07-24.

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Abstract

This paper focuses on an investigation into the role of the epoxy resin: curing agent ratio in composite interfacial shear strength of glass fibre composites. The procedure involved changing the percentage of curing agent (Triethylenetetramine [TETA]) used in the mixture with several different percentages used, ranging from 4% up to 30%, including the stoichiometric ratio. It was found by using the microbond test, that there may exist a relationship between the epoxy resin to curing agent ratio and the level of adhesion between the reinforcing fibre and the polymer matrix of the composite.