Citation:
XIAO Fengfei, SHI Lianghe, XU Mao. MODULUS-COMPOSITION DEPENDENCE FOR BLENDS OF PVC WITH SEGMENTED POLYURETHANES OF DIFFERENT SOFT SEGMENTS[J]. Chinese Journal of Polymer Science,
1991, 9(1): 55-64.
MODULUS-COMPOSITION DEPENDENCE FOR BLENDS OF PVC WITH SEGMENTED POLYURETHANES OF DIFFERENT SOFT SEGMENTS
摘要:
The dynamic mechanical modulus at 25℃ for blends of segmented polyurethanes with PVC was studied by using suitable mechanics models of multi-component systems. The analysis indicates that the blend morphology was mainly determined by soft segment structure of polyurethanes. The PPO-PU/PVC blends show typical two-phase morphology and their modulus-composition relations may be described by Halpin-Tsai model for domain-matrix two-phase systems.While the PCL-PU / PVC, PTMA-PU/PVC and PTMO-PU/PVC blends fit the Kerner's packed grain composite model.These results may imply that the modulus-composition relationship is packed grain composite model.These results may imply that the modulus-composition relationship is sensituve to the interaction between the components and the mixture morphology of the blends.
English
MODULUS-COMPOSITION DEPENDENCE FOR BLENDS OF PVC WITH SEGMENTED POLYURETHANES OF DIFFERENT SOFT SEGMENTS
Abstract:
The dynamic mechanical modulus at 25℃ for blends of segmented polyurethanes with PVC was studied by using suitable mechanics models of multi-component systems. The analysis indicates that the blend morphology was mainly determined by soft segment structure of polyurethanes. The PPO-PU/PVC blends show typical two-phase morphology and their modulus-composition relations may be described by Halpin-Tsai model for domain-matrix two-phase systems.While the PCL-PU / PVC, PTMA-PU/PVC and PTMO-PU/PVC blends fit the Kerner's packed grain composite model.These results may imply that the modulus-composition relationship is packed grain composite model.These results may imply that the modulus-composition relationship is sensituve to the interaction between the components and the mixture morphology of the blends.
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