Shrinkage Stresses in Particle-Reinforced Polymer Composites [Previously Titled: Contraction Stresses in Polymer Composite Materials With Dispersed Filler.]

• Published in: Mechanics of composite materials Vol. 25; no. 5; pp. 582 - 585
• Main Authors: Saratovskikh, S L, Dzhavadyan, E A, Rozenberg, B A
• Format: Journal Article
• Language: English
• Published: 01-09-1989
• ISSN: 0191-5665

Previously abstracted from original as item 9002-C1-D-0438. A study of the internal contraction stresses in polymers is presented, based on experimental work on an epoxy resin with polyethylene polyamide hardener and Al powder filler. It was shown that the proportion of filler in the composite material had a significant effect on both the internal stress and the density of the composite, the latter deviating significantly from the theoretical value if the volumetric fraction of the filler exceeded 0.2. At low values, there was no internal stress in the filler, but at high values, the stress could be significantly greater than the average stress in the polymer substrate. Graphs, photomicrographs.