Study of the epoxy system BADGE (n=0/1,2-DCH/CaCO3 filler by DMA and DSC

摘要

The influence of an inorganic filler, CaCO3 on the curing kinetics of an epoxy system composed of diglycidyl ether of bisphenol A [BADGE (n = 0)], 1,2-diaminecyclohexane (1,2-DCH), and CaCO3 filler was studied by DMA and DSC. Different contents of filler in the range from 10 to 30%, referred to the total weight of the mixture, were tried. It was found that maximum reproducibility of the results and better performance correspond to a filler content of 20%. As usual, the T-g's obtained by DMA and DSC are different at 10-20degreesC. The results obtained from this study were compared with those corresponding to the system BADGE (n = 0)/1,2-DCH without filler; the T. for this last system is higher than that for the system with filler incorporated, whereas E' and M-c (molecular weight between repetition units) are lower for the system without filler. (C) 2002 Wiley Periodicals, Inc. [References: 17]