用支化水性聚氨酯包覆HNIW的研究  

Research on Coating HNIW with Water-borne Branched Polyurethane

作　　者：廖肃然[1] 罗运军[1] 杨寅[1] 孙杰[2] 谭惠民[1] 

机构地区：[1]北京理工大学材料科学与工程学院 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《火炸药学报》2006年第5期22-24,28,共4页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金资助(10276007)

摘　　要：以甲苯二异氰酸酯(TD I)、聚氧化丙烯多元醇(TDB-2000和TM N-450)、双羟甲基丙酸(DM PA)和丁二醇(BDO)为原料,采用丙酮回流法合成了硬段质量分数为45%的支化水性聚氨酯(W BPU),用FT-IR、1HNM R及DSC对所得产物进行表征。FT IR和1HNM R图谱显示,所得产物为目标化合物;DSC测试结果显示,合成的支化水性聚氨酯树脂在299℃和380℃出现分解吸热双峰;SEM和FT-R am an光谱显示,制备的支化水性聚氨酯乳液采用破乳法对六硝基六氮杂异伍兹烷(HN IW)进行了包覆;撞击感度试验显示,HN IW包覆后的特性落高由25.1 cm提高到31.6 cm,表明支化性聚氨酯能降低HN IW的冲击感度。The waterborne branched polyurethane （WBPU） was synthesized from toluene diisocyanates （TDI）, TDB-2000, TMN-450, dimethylolpropionic acid （DMPA） and 1,4-butanediol （BDO） as raw materials under acetone reflux. The cast films obtained were characterized by FT-IR, ^1HNMR and DSC. The DSC curve presented an endothermic decomposition bimodal profile, showing that water-borne branched polyurethane resin degraded obviously at about 299 ℃ and 380 ℃. The SEM photographs and FT-Raman spectra revealed that hexanitrohexaazaisowurtzitane （HNIW） was coated with water-borne branched polyurethane by means of latex deposition. The impact sensitivity results show that the characteristic height H50 of HNIW coated by water-borne branched polyurethane increases from 25.1cm to 31.6cm, indicating that the water-borne branched polyurethane can decrease the impact sensitivity of HNIW.

关 键 词：高分子化学 六硝基六氮杂异伍兹烷 合成 支化水性聚氨酯 包覆 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]