The cure behavior of tetraglycidyl diaminodiphenyl methane with diaminodiphenyl sulfone

It is well known that the preparation of an high-performance composite prod uct depends not only on raw materials (resin and fiber) but also on the cur ing technological condition, or rather, the determination of the curing tec hnological parameters. In this study torsional braid analysis (TBA) is used to study the cure behavior of tetraglycidyl diaminodiphenyl methane (TGDDM or Ag-80) with diaminodiphenyl sulfone (DDS), providing theoretical data f or determining the curing condition of this resin matrix composites. Isothe rmal TEA technique is used to obtain a time-temperature-transformation (TTT ) cure diagram, according to which the three different types of cure behavi or are discussed. The data for T-g for different cure temperatures and time s provide and estimation of the time to full cure vs. isothermal cure tempe rature for the resin system. An empirical T-g-T-c-time (TTT) equation is al so developed. (C) 2000 Elsevier Science B.V. All rights reserved.