Properties of Multiphase Polyurethane Systems.
Abstract
The objective of this research was to explore the influence of morphology on the structure-property relationships of polyvinylchloride-polyurethane blend systems. Studies on blends of a segmented polyether polyurethane ET-38-1 with PVC were carried out utilizing differential scanning calorimetry (DSC), Rheovibron, stress-strain, infrared peak positions studies, and infrared dichroism experiments. As determined from DSC and Rheovibron data, THF-dioxane solution casting and melt processed samples are incompatible while THF solution casting produced a partially compatible polyurethane-PVC blend. However, similar uniaxial stress-strain data on all three series of samples indicate substantial polyether (soft segment of polyurethane) plasticization effect upon PVC, and therefore all of the blends can be considered as mechanically compatible. This produces useful blend systems of satisfactory mechanical properties with the PVC acting as a polyurethane stiffening agent. Such blends also exhibit improved flammability characteristics which are inherent to the PVC component. This is especially valuable in foamed elastomer or plastic applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1981
- Accession Number
- ADA108519
Entities
People
- Stuart L. Cooper
Organizations
- University of Wisconsin–Madison