三嵌段PNIMMO-PCL-PNIMMO含能黏合剂的合成与表征

(1. 华南理工大学 生物医学科学与工程学院,广东 广州 510006; 2.西安近代化学研究所, 陕西 西安 710065)

有机化学; 含能黏合剂; PNIMMO-PCL-PNIMMO; 聚己内酯; 开环聚合

Synthesis and Characterization of Triblock PNIMMO-PCL-PNIMMO Energetic Binder
WANG Xiao-chuan1,2, MO Hong-chang2, LU Xian-ming2, XU Ming-hui2, LU Hong-lin2, ZHANG Qian2,LIU Ning2

(1.School of Biomedical Sciences and Engineering,South China University of Technology, Guangzhou 510006, China; 2.Xi'an Modern Chemistry Research Institute, Xi'an 710065, China; )

organic chemistry; energetic binder; PNIMMO-PCL-PNIMMO; polycaprolactone; ring opening polymerization

DOI: 10.14077/j.issn.1007-7812.201904038

备注

以聚己内酯(PCL2000)为引发剂,三氟化硼·乙醚络合物为催化剂,使3-硝酸酯甲基-3-甲基氧杂环丁烷(NIMMO)开环聚合,得到了三嵌段PNIMMO-PCL-PNIMMO含能黏合剂。采用红外光谱、核磁共振氢谱、碳谱、凝胶渗透色谱、差示扫描量热法(DSC)和热重分析(TGA)对所得含能黏合剂的结构及性能进行了研究。结果 表明,合成的三嵌段PNIMMO-PCL-PNIMMO含能黏合剂相对分子质量符合预期; 玻璃化转变温度低,为-60℃; 黏度小,20℃时为6.8Pa·s; 其热稳定性性能良好,分解峰温约为216.5℃。

Triblock PNIMMO-PCL-PNIMMO energetic binder was synthesized by ring opening polymerization of 3-nitratomethyl-3-methyloxetane(NIMMO). Polycaprolactone(PCL2000)and BF3·OEt2 were used as initiator and catalyst, respectively. The structure and properties of the energetic binder were studied by FT-IR, 1H NMR, 13C NMR, GPC, DSC and TGA. The results show that the triblock PNIMMO-PCL-PNIMMO copolymer has low viscosity(20℃, 6.8 Pa·s)and low glass transition temperature(-60℃), and its relative molecular mass is as expected. The temperature of exothermic peak is 216.5℃, indicating a good thermal stability.