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- Title
Curing and thermal behaviour of DGEBA using mixture of biuret and 4,4′-diaminodiphenylsulfone.
- Authors
Singh, Vikram; Kumar, Lalit; Kumar, Vinay; Narula, A.; Deep, Gagan
- Abstract
Curing behaviour of DGEBA was investigated in the presence of varying molar ratio of biuret and 4,4′-diaminodiphenylsulfone (DDS) by means of Differential scanning calorimetery. The multiple heating rate method (5, 10, 15 and 20 °C min) was used to study the curing behaviour of epoxy resins. The peak exotherm temperature was found to be dependent on the heating rates, structure of biuret as well as on the ratios of biuret:DDS used. Ozawa method was used for calculating the activation energy of curing reaction. The thermal stability of the isothermally cured resins was evaluated by recording the thermogravimetric traces in nitrogen atmosphere. All the samples were stable up to 330 °C.
- Subjects
BISPHENOL A; DAPSONE; BIURET reaction; EPOXY resins; CALORIMETRY; HEATING; TEMPERATURE; THERMAL properties
- Publication
Journal of Thermal Analysis & Calorimetry, 2011, Vol 104, Issue 3, p1185
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-011-1344-9