INFLUENCE OF GLASS FIBER ON THE CURE CHARACTERISTIC OF EPOXY RESIN PREPREG

Abstract

Abstract: The curing kinetics of glass fiber/epoxy resin prepreg were investigated by dynamic differential scanning calorimetry (DSC). The curing characteristic temperatures were obtained by analyzing the DSC profile and cure temperatures were calculated by liner fitting and extrapolating method. The curing degree curve was plotted according to reaction heat of t (ΔH_t) and total reaction heat (ΔH₀) . The activation energy (E) and frequency factor (A) were calculated using Kissinger method while the reaction order (n) was calculated by Crane equation. The results showed that glass fiber led to increasing theoretical gelling temperature, curing temperature and postprocessing temperature. Also, glass fiber increased the activation energy. Moreover, glass fiber did not bring about the change of reaction order. Consequently, it was concluded that glass fiber had no obvious effect on the curing reaction mechanism while restrained the curing reaction.

Key words: cure kinetics, glass fiber/epoxy resin, prepreg, DSC

CLC Number:

TB332

LUO Li, TANG Qing-ru. INFLUENCE OF GLASS FIBER ON THE CURE CHARACTERISTIC OF EPOXY RESIN PREPREG[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(4): 13-17.

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