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A simple procedure of accounting for physical aging in the prediction of the modulus of glassy plastic materials
Author(s) -
Booij H. C.,
Minkhorst J. H. K.
Publication year - 1979
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.760190809
Subject(s) - materials science , viscoelasticity , amorphous solid , acrylonitrile butadiene styrene , creep , isothermal process , polymer , composite material , relaxation (psychology) , stress relaxation , glass transition , extrusion , thermodynamics , organic chemistry , psychology , social psychology , chemistry , physics
Abstract The basic relationships are presented for predicting the creep and stress relaxation as a function of physical aging, loading time, and temperature of amorphous polymers processed under such conditions that their thermal treatment amounts to a quench from the melt to the glassy state. A nomogram construction, based on these relations, is proposed and developed for a particular polymer, namely an extrusion type acrylonitrile‐butadiene‐styrene (ABS), RONFALIN EST. The applicability of the procedure is restricted to the isothermal viscoelastic behavior at low stresses and strains of unplasticised amorphous plastic materials quenched from the melt to the glassy state.