1973-02-01

Thermoplastic Polyurethane Elastomers Temperature Dependence of Physical Properties 730602

Thermoplastic urethanes can be regarded as linear, block copolymers of the (AB)n type, the A block being considered the soft segment and the B block the hard segment.This study was concerned with the temperature dependence of mechanical properties for thermoplastic urethanes based on polycaprolactone diols, 4,4-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BDO). The molecular weight of the polycaprolactone diol (A or soft segment) was varied independently, as was the relative concentration of the MDI/BDO hard (B) segment.The resulting urethanes ranged from rubbery to hard and tough materials. Some of the urethanes displayed compatible behavior. Others displayed an incompatible behavior and were, thus, less temperature dependent.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X