Abstract
AbstractHydroxyl terminated polybutadiene based polyurethanes with various crosslinker compounds have been prepared to investigate the effect of crosslinker content and structure on polyurethanes mechanical properties. Three various crosslinkers have been used in this study, including trimethylolpropane, triethanolamine, and boron trifluoride triethanolamine complex. The results established that increasing crosslinker content increased the polyurethane strength. Moreover, boron trifluoride triethanolamine complex showed better ability in making network polyurethanes. The tensile test revealed that using boron trifluoride triethanolamine complex as crosslinker led to increasing chemical crosslinking bonds in comparison to two other crosslinkers via catalyzing side reaction like chain coupling. Swelling test and dynamical‐mechanical analysis confirmed this result, too.
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