Accession Number : AD0784633

Title :   Dielectric Monitoring of an Epoxy Cure.

Descriptive Note : Final rept.,

Corporate Author : BABCOCK AND WILCOX CO LYNCHBURG VA LYNCHBURG RESEARCH CENTER

Personal Author(s) : Stafford,D. K. ; Long,W. G.

Report Date : MAY 1974

Pagination or Media Count : 42

Abstract : This report presents the results of a study to determine the feas-ibility of employing dielectrometry as a monitoring technique to follow the cure of reinforced thermosetting composite materials. The material selected for the investigation was a glass- reinforced, amine-cured epoxy resin. Changes in infrared spectra and DTA thermo-grams were noted and correlated with cure events and the dielectric responses. The peak of the dissipation trace appears directly re- lated to the time of gelation. Correlation of strength data with dielectric responses was inconclusive, indicating that further work is required to utilize dielectrometry in the identification of end-of-cure. (Author, modified-PL)

Descriptors :   *Thermosetting plastics, *Epoxy resins, *Curing, *Dielectric properties, Differential thermal analysis, Infrared spectra, Strength(Mechanics)

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE