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含能材料  2015 

无规嵌段型PBAMO/GAP含能热塑性弹性体的合成与表征

DOI: 10.11943/j.issn.1006-9941.2015.07.003

Keywords: 含能粘合剂 含能热塑性弹性体 聚3,3-双叠氮甲基氧丁环(PBAMO) 聚叠氮缩水甘油醚(GAP)

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Abstract:

采用聚3, 3-双叠氮甲基氧丁环(PBAMO)为硬段预聚物, 聚叠氮缩水甘油醚(GAP)为软段预聚物, 甲苯二异氰酸酯(TDI)为固化剂, 1, 4-丁二醇(BDO)为扩链剂, 通过溶液聚合反应合成了无规嵌段型PBAMO/GAP含能热塑性弹性体(ETPE)。采用红外(IR)、凝胶渗透色谱(GPC)及X射线衍射仪(XRD)表征了其结构。结果表明, 共聚物的数均分子量可达34000以上。该弹性体中氨基甲酸酯中的亚氨基与叠氮基团形成氢键, 共聚物中PBAMO的结晶度为16.6%。优化其合成工艺, 得到最佳的实验条件为:扩链阶段T=130 ℃, t=40 h, Mn (PBAMO)=4100, m(PBAMO):m(GAP)=1:1, R=1.0, w(TDI+BDO)=30%

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