Stress–strain behavior of SAN/glass bead composites above the glass transition temperature

✍ Scribed by M. Narkis; L. Nicolais

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 341 KB
• Volume: 15
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1971.070150220

✦ Synopsis

Abstract

Relaxation and stress–strain behavior of SAN–glass bead composites are studied above the glass transition temperature. The strain imposed on the polymeric matrix of the composite is defined as ϵ~p~ = ϵ~c~/(1 − ϕ^⅓^). Stress relaxation data for the filled polymer which is independent of strain can be calculated by multiplying the relaxation modulus (at a certain strain) by (1 + ϵ~p~). Stress–strain curves at constant strain rate and for different concentrations of the filler can be shifted to form a master curve independent of filler content if the tensile stress is plotted versus ϵ^p^. The relaxation modulus increases with increasing the filler concentration and can be predicted by a modified Kerner equation at 110°C.