Relaxation properties of the materials based on the blends of polyvinylchloride and ABS-plastic
Pages 118-129
The polymer mixes based on polyvinyl chloride (PVC) and ABS-plastic with different ratios of components from 0 to 100 % have been obtained. The compatibility analysis of the components of the mixes was provided with the use of the compatibility criterion, taking into account the chemical structure of the polymers, their surface energy and molar volume of the repeating unit, as well as Hildebrand solubility parameter. A complete thermodynamic compatibility takes place, which allows preparation of monolithic materials. The experiments on stress relaxation under uniaxial compression of the samples at various concentrations of blend components at the temperatures ranging from 23 to 70 oC were performed. The approximation of the stress relaxation curves using modern memory functions based on the analysis of entropy production of the system during the relaxation process was performed. These physical parameters of the memory functions allow evaluating a long-term mechanical working ability of the materials derived from the blends of PVC and ABS-plastic.
DOI: 10.22227/1997-0935.2015.8.118-129
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