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Time and temperature dependent Young’s modulus for isotropic and highly oriented polymers. (English) Zbl 0963.74510

Summary: Experimental time and temperature dependencies of the complex Young’s modulus components have been analyzed for isotropic and uniaxially oriented polymers of different chemical structures. In the regions of relaxation transitions, these dependencies have been described by the equations of viscoelasticity. For highly oriented polymers, the relaxation time distribution has been approximated by a rectangular (‘box’) function. This approximation provides specific formulae for time and temperature relaxation of Young’s modulus components.

MSC:

74D99 Materials of strain-rate type and history type, other materials with memory (including elastic materials with viscous damping, various viscoelastic materials)
74-05 Experimental work for problems pertaining to mechanics of deformable solids
82D60 Statistical mechanics of polymers
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