Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders
Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders
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DOI：
10.1002/pi.5394
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发表时间：
2017-09-01
影响因子：
3.2
通讯作者：
Hu, Huaiming
中科院分区：
文献类型：
--
作者：
Xu, Minghui;Ge, Zhongxue;Hu, Huaiming
以环氧氯丙烷和1，1，1-三氟-2，3-环氧丙烷为原料，先进行阳离子共聚，然后进行叠氮化反应，合成了一种新型含氟缩水甘油叠氮聚合物。FGAP的结构经傅立叶变换红外光谱、H-1核磁共振和C-13核磁共振波谱确证。用凝胶渗透色谱、差示扫描量热法和热重分析表征了FGAP的相对分子质量和热行为。FGAP的相对分子质量为2845gmol(-1)，玻璃化转变温度为-47.8℃，分解温度为253℃。以三苯基甲烷-4，4，4-三异氰酸酯为交联剂，进一步制备了FGAP基聚氨酯网络。与GAP相比，基于FGAP的PU网络具有更好的力学性能(拉伸强度为1.5 Mpa，断裂伸长率为81.6%)。结果表明，FGAP有可能成为未来推进剂配方的一种有前途的聚合物粘结剂。(三)2017年化学工业学会
A novel energetic polymer, fluorine-containing glycidyl azide polymer (FGAP), was developed via an initial cationic copolymerization of epichlorohydrin and 1,1,1-trifluoro-2,3-epoxypropane, followed by azidation. The structure of FGAP was confirmed using Fourier transform infrared, H-1 NMR and C-13 NMR spectroscopies. The molecular weight and the thermal behavior of FGAP were characterized using gel permeation chromatography, differential scanning calorimetry and thermogravimetric analysis. FGAP had a molecular weight of 2845 g mol(-1), and the glass transition temperature and decomposition temperature were found to be -47.8 and 253 degrees C, respectively. FGAP-based polyurethane networks were further prepared using triphenylmethane-4,4,4-triisocyanate as the crosslinking agent. In comparison with GAP, FGAP-based polyurethane networks exhibited better mechanical behaviors (a tensile strength of 1.5 MPa and an elongation at break of 81.6%). The results demonstrated that FGAP might be a promising polymeric binder for future propellant formulations. (c) 2017 Society of Chemical Industry