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Relation between impact strength and dynamic mechanical properties of plastics
Author(s) -
Wada Yasaku,
Kasahara Tetsuo
Publication year - 1967
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1967.070110906
Subject(s) - izod impact strength test , materials science , composite material , moduli , polymer , relaxation (psychology) , dynamic mechanical analysis , simple (philosophy) , physics , ultimate tensile strength , psychology , social psychology , quantum mechanics , philosophy , epistemology
A simple theory is developed which correlates the Izod impact strength of polymers with ( G ′ 100 ‐ G ′ 300 ) 2 / G ′ 100 , where G ′ 100 and G ′ 300 are dynamic shear moduli at 100°K. and 300°K., respectively. The theory assumes the Maxwell element for the material and the fracture time smaller than the relaxation time. The theory is verified by experimental data for numerous polymers. Another approach which correlates the impact strength with the integrated loss factor from 0 to 300°K. is also proved valid.