Effect of Applied Stress, Thermal Environment and Water in Epoxy Resins.
Abstract
The DGEBA/TETA system was examined in postcuring conditions at 100 degree C okf three and six days. Sorption kinetics and equilibria at different temperature and mechanical tests have been performed on the two sets of samples. Attention was also given to the effects on solubilities of thermal history in presence of water. It was observed that the saturation values in such systems are determined once the higher temperature of the thermal cycle is defined. The differences in solubilities of samples with different hygrothermal history are explained in terms of microcavities that can be formed by effect of crazing in the plasticized system exposed to high temperatures. Solubility in the resins was then found to be a decreasing function of temperature while void volume percent an increasing function of the same. Mechanical tests varified this hypothesis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1978
- Accession Number
- ADA072701
Entities
People
- A. Apicella
- E. Drioli
- L. Nicolais
- O. Albanese
Organizations
- University of Naples Federico II