PBT与BPS固化反应特性  

Curing Characteristics of PBT and BPS

作　　者：肖立柏[1] 高红旭[1] 任晓宁[1] 赵凤起[1] 付青山 曲文刚[1] 莫洪昌[1] XIAO Li-bai;GAO Hong-xu;REN Xiao-ning;ZHAO Feng-qi;FU Qing-shan;QU Wen-gang;MO Hong-chang(Science and Technology on Combustion and Explosion Laboratory,Xi'an Modern Chemistry Research Institute,Xi'an 710065,China)

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《含能材料》2021年第1期48-52,I0004,共6页Chinese Journal of Energetic Materials

基　　金：国防科技重点实验室基金资助(6142603190303);科工局基础产品创新项目资助。

摘　　要：为了解叠氮黏合剂/非异氰酸酯固化剂固化体系的反应特性,通过微量热法研究了3,3-双(叠氮甲基)环氧丁烷与四氢呋喃共聚醚(PBT)与非异氰酸酯固化剂-丁二酸二丙炔醇酯(BPS)黏结体系的固化反应过程,采用Kissinger法和Crane法计算了该黏结体系固化反应的动力学参数和特征温度,根据333.15、343.15、353.15和363.15 K四个等温条件下该黏结体系完全固化所需的时间拟合了完全固化时间与温度的方程。结果表明,PBT/BPS黏结体系固化反应的表观活化能为81.94 kJ·mol^-1,指前因子为10^8.48 s^-1,反应级数为0.93,固化反应热为-926.88 J·g^-1;该黏结体系的凝胶温度为319.29 K,固化温度344.52 K,后固化温度为366.11 K;该黏结体系固化反应中存在自催化现象;拟合出的该黏结体系完全固化时间与温度之间的关系式为y=8.3345×10^4e^-0.02309x-11.116。In order to understand the reaction characteristics of azide binder/non-isocyanate bonding system,curing processes of 3,3-bis(azidomethyl)oxetane-tetrahydrofuran copolymer(PBT)/bis-propargyl-succinate(BPS)binding system were investigated by microcalorimetry.The kinetic parameters and characteristic temperatures of PBT/BPS binding system were calculated through Kissinger method and Crane method.The equation between the complete curing time and the curing temperature was also fitted,demonstrating that the apparent activation energy,pre-exponential factor,reaction order and heat for curing reaction of PBT/BPS bonding system are 81.94 kJ·mol^-1,10^8.48 s^-1,0.93 and -926.88 J·g^-1,respectively.The values of gelation temperature,curing temperature and post-curing temperature were examined to 319.29 K,344.52 K and 366.11 K,respectively.Besides,self-catalyzed phenomenon could be witnessed to exist in the curing reaction process of the PBT/BPS bonding system.The equation between the complete curing time and the curing temperature was y=8.3345×10^4e^-0.02309x-11.116.

关 键 词：3 3-双(叠氮甲基)环氧丁烷与四氢呋喃共聚醚(PBT) 丁二酸二丙炔醇酯(BPS) 固化 动力学 微量热 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]