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Mechanical properties of glass fiber composites with an epoxy resin modified by a liquid crystalline epoxy
Author(s) -
Punchaipetch Prakaipetch,
D'Souza Nandika Anne,
Brostow Witold,
Smith James T.
Publication year - 2002
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10457
Subject(s) - materials science , diglycidyl ether , composite material , epoxy , curing (chemistry) , fracture toughness , flexural strength , glass fiber , ultimate tensile strength , interphase , scanning electron microscope , toughness , bisphenol a , biology , genetics
The effect of liquid crystalline networks on epoxy + glass fiber composites is investigated. The matrix obtained from in‐situ curing of liquid crystalline (LC) diglycidyl ether of 4,4‐dihydroxybiphenol (DGE‐DHBP) with diglycidyl ether of bisphenol F (DGEBP‐F) by anhydride curing agent was used as the matrix for polymer composites. Impact, tensile, and flexural testing results are compared between the unmodified and modified systems. The interlaminar fracture toughness of commposites in the shear mode was determined by end notch flexure (ENF) tests. Scanning electron microscopy is used to study the fracture surfaces to understand the mechanism of fracture and interphase formation between the fiber and the matrix.