Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 38, Issue 12, Pages 2422-2432Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2007.08.009
Keywords
glass fibre; polymer matrix composites; thermal properties; thermosetting resin; SAN
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Polystyrene-co-acrylonitrile) (SAN) was used to modify diglycidyl ether of bisphenol-A (DGEBA) type epoxy resin cured with diamino diphenyl sulfone (DDS) and the modified epoxy resin was used as the matrix for fibre reinforced composites (FRPs) in order to get improved mechanical and thermal properties. E-glass fibre was used as the fibre reinforcement. The morphology, dynamic mechanical and thermal characteristics of the systems were analyzed. Morphological analysis revealed heterogeneous dispersed morphology. There was good adhesion between the matrix polymer and the glass fibre. The dynamic moduli, mechanical loss and damping behaviour as a function of temperature of the systems were studied using dynamic mechanical analysis (DMA). DMA studies showed that DDS cured epoxy resin/SAN/glass fibre composite systems have two T(g)s corresponding to epoxy rich and SAN rich phases. The effect of thermoplastic modification and fibre loading on the dynamic mechanical properties of the composites were also analyzed. Thermogravimetric analysis (TGA) revealed the superior thermal stability of composite system. (c) 2007 Elsevier Ltd. All rights reserved.
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