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.
出处
《火炸药学报》
EI
CAS
CSCD
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)
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
polymer chemistry
hexanitrohexaazaisowurtzitane
synthesis
waterborne branched polyurethane
coating
