含能材料Issue(6)：771-776,6.DOI:10.3969/j.issn.1006-9941.2013.06.016
不同分子量HTPB与TDI的固化反应动力学
Effect of HTPB with Different Molecular Weights on Curing Kinetics of HTPB/TDI System
摘要
Abstract
Curing processes of hydroxyl-terminated polybutadiene ( HTPB ) with different molecular weight ( M1:1500;M2:2800)/2,4-toluene diisocyanate (TDI) systems were studied by rotational viscometer and non-isothermal differential scan-ning calorimetry(DSC), and effect of molecular weight on curing reation kinetic of system was investigated.Results show that the viscosity of M1 system increases faster than that of M2 system, and the curing reaction heat of M1 systems is greater than that of M2 system.The values of apparent activation energy, reaction order and pre-exponential factor of M1 system are 55.87 kJ・ mol-1 , 0.88, 4.70 ×104 s-1 , respectively.While for M2 system,the peak temperature of the curing process increases and the values of apparent activation energy,reaction order and pre-exponential factor increase to 60.77 kJ・ mol-1 , 0.89, 1.07 ×105 s-1 , respec-tively.The curing reaction mechanism of two curing system follows f(α)=(1-α) n and index n of M1 system curing reaction is only slightly different from that of M2 system.关键词
高分子化学/端羟基聚丁二烯(HTPB)/非等温DSC/固化反应/动力学Key words
polymer chemistry/hydroxyl-terminated polybutadiene ( HTPB)/non-isothermal differential scanning calorimetry/curing reaction/curing kinetics分类
军事科技引用本文复制引用
陈春燕,王晓峰,高立龙,郑亚峰..不同分子量HTPB与TDI的固化反应动力学[J].含能材料,2013,(6):771-776,6.基金项目
国防973资助项目 （）
