FT-IR法研究GAP与N100的催化反应动力学  

FT-IR Study on the Catalytic Reaction Kinetics of Glycidyl Azide Polymer with N100

作　　者：申飞飞[1] Abbas Tanver 罗运军[1] 

机构地区：[1]北京理工大学材料学院,北京100081

出　　处：《火炸药学报》2014年第4期14-18,共5页Chinese Journal of Explosives & Propellants

摘　　要：采用傅里叶变换红外(FT-IR)研究了聚叠氮缩水甘油醚(GAP)与多异氰酸酯(N100)之间的反应动力学。得到60、70、80、90℃下分别用TPB(三苯基铋)和T12(二月桂酸二丁基锡)作催化剂时体系的反应机理函数和表观活化能。结果表明,GAP/N100体系的固化反应为一级动力学反应;当两种固化催化剂质量分数均为0.015%,以TPB为催化剂时体系整个固化过程遵循一级动力学规律;以T12为催化剂时,在转化率达80%之前,体系遵循一级反应规律,反应机理函数为g(α)=-ln(1-α),之后反应机理函数转变为三维(球对称)扩散g(α)=[1-(1-α)1/3]2;用T12作催化剂时,GAP/N100固化反应结束时间远低于用TPB作催化剂时所用时间。The reaction kinetics of glycidyl azide polymer （GAP）with polyisocyanate （N100）was studied by the FT-IR method.Using triphenyl bismuth（TPB）and di-n-butyltin dilaurate （T12）as catalysts,the reaction mecha-nism function and activation energies of the two systems at 60,70,80 and 90℃ were obtained.The results show that the curing reaction of GAP/N100 system is determined as first order reaction.When the content of TPB and T12 is 0.015%,respectively,the whole curing reaction process using TPB as catalyst obeys the first-order kinetic law,the system using T12 as catalyst obeys the first-order kinetic law and the reaction mechanism function is g（α）=-ln（1 -α）when the degree of conversation is less than 80%,while the system obeys three-dimensional （spheri-cal symmetric）diffusion and the reaction mechanism function is g（α）=[1 -（1-α）1/3 ]2 when the degree of conver-sation is over 80%.The curing reaction time of GAP/N100 using T12 as catalyst is much less than that of GAP/N100 using TPB as catalyst.

关 键 词：物理化学 FT-IR光谱 固化反应动力学 GAP N100 TPB T12 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] X93[环境科学与工程—安全科学]