Thermally stimulated currents in epoxy resin systems and epoxy resin/rubber blends

Author

Maggana, C. ; Spathis, G. ; Pissis, P. ; Kanapitsas, A. ; Delides, C.G. ; Vatalis, A.S.

Author_Institution

Dept. of Eng. Sci., Nat. Tech. Univ. of Athens, Greece

fYear

1994

fDate

7-9 Sep 1994

Firstpage

546

Lastpage

551

Abstract

The low temperature relaxation mechanisms of epoxy networks and blends were investigated by thermally stimulated discharge current (TSDG) techniques in the temperature range of 77 to 300 K. Two series of specimens, based on DGEBA cured with either TETA or DDM, were prepared. Specimens in the first series were mixed with different amounts of plasticizer thiocol. The influence of the absorbed water on the low temperature relaxations, and its plasticizing capability were studied, both affected by the presence of plasticizer and water in the specimens. In the second series, blends of CTBN with epoxy resin ER were prepared. Four dispersions are observed and ascribed to the CTBN phase, the ER phase and their interfaces

Keywords

dielectric relaxation; electrets; epoxy insulation; rubber; thermally stimulated currents; 77 to 300 K; DDM; DGEBA; TETA; epoxy resin systems; epoxy resin/rubber blends; low temperature relaxations; plasticizer thiocol; plasticizing capability; thermally stimulated currents; thermally stimulated discharge current; Additives; Composite materials; Curing; Distributed decision making; Epoxy resins; Erbium; Morphology; Physics; Rubber; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.514828

Filename

514828