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首页> 外文期刊>e-Polymers >Kinetic studies on the cure reaction of hydroxyl-terminated polybutadiene based polyurethane with variable catalysts by differential scanning calorimetry
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Kinetic studies on the cure reaction of hydroxyl-terminated polybutadiene based polyurethane with variable catalysts by differential scanning calorimetry

机译：差示扫描量热法研究端羟基聚丁二烯基聚氨酯与可变催化剂的固化反应动力学

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This paper employs differential scanning calorimetry (DSC) to investigate the reactions of hydroxyl-terminated polybutadiene (HTPB) binder and isophorone isophorone diisocyanate (IPDI) with two different cure catalysts, namely, dibutyl tin dilaurate (DBTDL) and stannous octanoate (TECH). This study evaluates the effects of two cure catalysts (i.e. DBTDL and TECH) on rate constants of the polyurethane cure reactions. Throughput the study, the kinetic parameters and the curing reaction rate equations are obtained. The present work concludes that both catalysts had a catalytic effect on the HTPB-IPDI system, but that the catalytic effect of DBTDL was higher than that of TECH. The binder system with the TECH catalyst displayed a longer pot-life and lower toxicity compared with the DBTDL. Additionally, this study investigates the binder system’s viscosity build-up at 35°C and the viscosity build-up results were in agreement with the DSC analysis results.
机译：本文采用差示扫描量热法（DSC）研究了羟基封端的聚丁二烯（HTPB）粘合剂和异佛尔酮异佛尔酮二异氰酸酯（IPDI）与两种不同的固化催化剂，即二月桂酸二丁锡（DBTDL）和辛酸亚锡（TECH）的反应。这项研究评估了两种固化催化剂（即DBTDL和TECH）对聚氨酯固化反应速率常数的影响。通过研究，获得了动力学参数和固化反应速率方程。本工作的结论是，两种催化剂均对HTPB-IPDI系统具有催化作用，但DBTDL的催化作用高于TECH。与DBTDL相比，带有TECH催化剂的粘合剂体系具有更长的适用期和更低的毒性。此外，这项研究还研究了粘合剂体系在35°C下的粘度升高情况，并且该粘度升高结果与DSC分析结果一致。

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