Abstract
The effect of time and temperature of curing on the conversion of epoxy groups, on the relative change of some other functional groups (−OH, −NH2, RNH), glass transition temperatureT g , and equilibrium modulusG e was investigated for epoxy networks having various initial ratios of N,N-diglycidylaniline to 4,4′-diaminodiphenylmethane (DDM) and of networks with various ratio of N,N,N′,N′-tetraglycidyl-4,4′-diaminodiphenylmethane and DDM. Curing conditions were found under which the conversion of minority groups is maximal at the minimal extent of degradation reactions for networks prepared both in the excess of amine and in the excess of epoxide. For networks prepared in the excess of epoxide the degree of the etherification reaction was found to depend on time and temperature.
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Zelenka, J., Ilavský, M., Špaček, V. et al. Networks based on aromatic glycidylamines: 1. Effect of curing conditions on the crosslinking of N,N-diglycidylaniline with 4,4′-diaminodiphenylmethane and of N,N,N′,N′-tetraglycidyl-4,4′-diaminodiphenylmethane with 4,4′-diaminodiphenylmethane. Colloid Polym Sci 269, 1013–1020 (1991). https://doi.org/10.1007/BF00657431
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DOI: https://doi.org/10.1007/BF00657431