Cure kinetics of multifunctional epoxies with 2,2?-dichloro-4,4?-diaminodiphenylmethane as hardener

Autor:	Murali Saletore, C. Biswas, Sarvottam Y. Ambekar, S. Suvarna, A. V. Rajanna, J. Gururaja Rao, K. S. Jagadeesh, K. Shashikiran
Rok vydání:	2000
Předmět:	Materials science Polymers and Plastics Kinetics General Chemistry Activation energy Epoxy Surfaces Coatings and Films chemistry.chemical_compound chemistry visual_art Diamine Polymer chemistry Materials Chemistry visual_art.visual_art_medium Thermal stability Reactive diluent Curing (chemistry)
Zdroj:	Journal of Applied Polymer Science. 77:2097-2103
ISSN:	1097-4628 0021-8995
DOI:	10.1002/1097-4628(20000906)77:10<2097::aid-app1>3.0.co;2-4
Popis:	The curing behavior of the epoxy resin N,N,N′,N′-tetraglycidyldiaminodiphenyl methane (TGDDM) with triglycidyl p-aminophenol as a reactive diluent was investigated using 2,2′-dichloro-4,4′-diaminodiphenylmethane (DCDDM) as the curing agent. The effect of the curing agent on the kinetics of curing, shelf-life, and thermal stability in comparison with a TGDDM-diaminodiphenylsulfone (DDS) system was studied. The results showed a lesser activation energy at the lower level of conversion with a broader cure exotherm for the epoxy-DCDDM system in comparison with the epoxy-DDS system, although the overall activation energy for the two systems was comparable. TGA studies showed more stability in the epoxy-DCDDM system than in the epoxy-DDS system. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2097–2103, 2000
Databáze:	OpenAIRE
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