Properties of urethane elastomers

✍ Scribed by I. Diaconu; C. Ciobanu; Cr. I. Simionescu

• Publisher: Springer
• Year: 1990
• Tongue: English
• Weight: 271 KB
• Volume: 24
• Category: Article
• ISSN: 0170-0839
• DOI: 10.1007/bf00395582

✦ Synopsis

ffi'e dielectric relaxation processes in poly(azourethaneurea) prepared from diphenylmethane-4,4'-diisocyanate (MDI) and poly(ethvIene adipate) glvcol were studied in the range 200-3g0 K using thermally stimulated depolarization currents (TSDC), The TSDC spectra obtained on original sampIe,anneaIed sample, and both annealed and stretched sample showed signlflcant differences which were explained in terms of the supr~ molecular structure of polymers. It was accepted that the oo-Ivmers have a multiphase $uprRmolecular structure,