非等温DSC研究PBT/TDI固化反应动力学  

Study on curing reaction kinetic of PBT/TDI by non-isothermal DSC

作　　者：邱磊 王鸿宇 代颖军 袁潇 Qiu Lei;Wang Hongyu;Dai Yingjun;Yuan Xiao(Shanghai Space Propulsion Technology Research Institute,Huzhou 313000,China)

机构地区：[1]上海航天动力技术研究所

出　　处：《化学推进剂与高分子材料》2020年第1期38-41,共4页Chemical Propellants & Polymeric Materials

摘　　要：采用非等温差示扫描量热法(DSC)对PBT [3, 3–双(叠氮甲基)氧杂环丁烷–四氢呋喃共聚醚]/TDI(甲苯二异氰酸酯)反应体系在不同催化剂用量、不同升温速率条件下的固化反应进行了研究,并通过Kissinger-Crane方程求解得到了表观活化能和反应级数等动力学参数。结果表明,催化剂含量不会影响PBT/TDI固化反应级数,但能显著改变固化反应活化能。The curing reactions of PBT[3,3-bis(azidomethyl)oxetane-tetrahydrofuran]/TDI(toluene diisocyanate) reaction system at different catalyst amounts and different heating rates were studied by using the non-isothermal differential scanning calorimetry(DSC), and the kinetic parameters such as the apparent activation energy, the reaction order and so on were obtained by solving the Kissinger-Crane equation.The results show that the catalyst content can not affect the curing reaction order of PBT/TDI, but it can significantly change the activation energy of the curing reaction.

关 键 词：固化反应动力学 PBT TDI 非等温DSC 反应活化能 

分 类 号：TQ314.256[化学工程—高聚物工业] V512[航空宇航科学与技术—航空宇航推进理论与工程]