三嵌段PNIMMO-PCL-PNIMMO含能黏合剂的合成与表征  

Synthesis and Characterization of Triblock PNIMMO-PCL-PNIMMO Energetic Binder

作　　者：王晓川 莫洪昌[2] 卢先明[2] 徐明辉[2] 陆洪林[2] 张倩[2] 刘宁[2] WANG Xiao-chuan;MO Hong-chang;LU Xian-ming;XU Ming-hui;LU Hong-lin;ZHANG Qian;LIU Ning(School of Biomedical Sciences and Engineering,South China University of Technology, Guangzhou 510006, China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[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

出　　处：《火炸药学报》2020年第4期378-382,共5页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.51373159)。

摘　　要：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.

关 键 词：有机化学 含能黏合剂 PNIMMO-PCL-PNIMMO 聚己内酯 开环聚合 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O62[理学—有机化学]