Characterization of the curing agents used in epoxy resins with TG/FT-IR technique
| Autor: | Benedita M. V. Romão, Milton F. Diniz, Margarete F. P. Azevedo, Vera L. Lourenço, Luiz C. Pardini, Rita C.L. Dutra, Fabrice Burel |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Polímeros, Vol 16, Iss 2, Pp 94-98 (2006) |
| Druh dokumentu: | article |
| ISSN: | 0104-1428 1678-5169 |
| DOI: | 10.1590/S0104-14282006000200007 |
| Popis: | Samples of epoxy resin (EP) based on the diglycidyl ether of bisphenol A (DGEBA), cured with nadic methyl anhydride (NMA) and mercaptan (CAPCURE 3-800), or amine-phenol (CAPCURE EH-30), respectively, SE 4 and SE 5, were prepared in the stoichiometric ratio determined by the supplier. The curing behaviour of the epoxy systems SE 4 and SE 5 was followed by DSC (Differential Scanning Calorimetry). These SE and their ingredients were analyzed using FTIR transmission techniques (KBr pellets, pyrolysis without control and controlled pyrolysis-FT-IR, the CONTROLPIR/FT-IR) for characterizing the curing agents (CA). The temperature range used for samples pyrolysis was found from TG (thermogravimetry). Thus, the FT-IR bands of liquid pyrolysate obtained by CONTROLPIR/FT-IR were evaluated, in comparison to the reference spectrum of CA. The characterization of CA was also possible, by the analysis of such SE with the TG/FT-IR technique. |
| Databáze: | Directory of Open Access Journals |
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