端羟基液体含氟黏结剂/异氰酸酯的固化反应动力学  

Curing reaction kinetics of hydroxyl-terminated liquid fluorine-containing binder/isocyanate systems

作　　者：何仁浩 王鹏[1] 宋浩 王帅 肖运钦 白晓朋 杜黎小松 HE Renhao;WANG Peng;SONG Hao;WANG Shuai;XIAO Yunqin;BAI Xiaopeng;DU Lixiaosong(Hubei Institute of Aerospace Chemotechnology,Xiangyang 441003)

机构地区：[1]湖北航天化学技术研究所,襄阳441003

出　　处：《固体火箭技术》2025年第1期93-101,共9页Journal of Solid Rocket Technology

基　　金：湖北省自然科学基金(项目编号:2023AFB540)。

摘　　要：为研究三种端羟基液体含氟黏结体系P1(HTFB1/TMXDI)、P2(HTFB2/DI-1)与P3(HTFB1/TMXDI/DEP)的固化反应动力学,以旋转黏度法得到三种体系黏度随时间变化关系;采用差式扫描量热分析(DSC)与外推法,得到等温条件下的固化反应温度;综合Kissinger、Ozawa和Crane动力学分析方法,构建了n级反应动力学模型;采用等转化率法和Malek法,构建了自催化反应动力学模型;通过阿伦尼乌斯(Arrhenius)方程计算了P1、P2、P3体系不同温度下的反应速率常数。结果表明,黏度增长速率为P1>P3>P2;自催化模型比n级模型更适合解释P1、P2、P3体系的固化反应历程,与端羟基聚丁二烯(HTPB)黏结体系对比,在相同温度下反应速率常数k对比关系为:P1、P3体系明显高于其他体系,且P1略高于增塑后的P3体系,P2体系高于HTPB体系。In order to study the curing reaction kinetics of three hydroxyl-terminated liquid fluorine bonding systems,P1(HTFB1/TMXDI),P2(HTFB2/DI-1)and P3(HTFB1/TMXDI/DEP),the relationship between viscosity and time of the three systems was obtained by means of rotational viscosity method.The curing reaction temperature under isothermal conditions was obtained by using the differential scanning calorimetry(DSC)and extrapolation method,and the n-th order reaction kinetics model was constructed by combining the Kissinger,Ozawa,and Crane kinetics analysis methods.The autocatalytic reaction kinetic model was established by the iso-conversional method and Malek method.The reaction rate constants of P1,P2 and P3 systems at different temperatures were calculated by Arrhenius equation.The results show that the order of viscosity growth rate is P1>P3>P2.The autocatalytic model is more suitable for explaining the curing reaction process of the P1,P2,and P3 systems than the n-th order model.Compared with the hydroxyl-terminated polybutadiene(HTPB)bonding system,the reaction rate constant k of P1 and P3 systems at the same temperature are significantly higher than that of other systems,while k of P1 is slightly higher than that of the plasticized P3 system,k of P2 system is higher than that of HTPB system.

关 键 词：端羟基液态含氟黏结体系 固化反应动力学 黏度法 DSC法 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]