Premium
Tensile crazing and shear banding of styrene A: Temperature and rate effects
Author(s) -
Sultan J. N.,
McGarry F. J.
Publication year - 1974
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760140407
Subject(s) - crazing , materials science , ultimate tensile strength , composite material , copolymer , styrene , natural rubber , shear rate , shear (geology) , activation energy , acrylonitrile butadiene styrene , melt flow index , deformation (meteorology) , rheology , polymer , chemistry , organic chemistry
Tensile yield, flow, and fracture mechanisms in styrene A (SA), a styrene‐acrylonitrile copolymer rubber‐modified styrene A (RMSA) have been studied and characterized into two basic types: tensile crazing and shear banding. Each can be represented by a master curve and equation over ranges of temperature and deformation rates. Each exhibits distinctive activation energy and volume values. Tensile crazing predominates in unoriented SA below 70°C, and in RMSA. Shear yielding predominates in oriented SA.