【摘要】 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%。更多还原

【Abstract】 The PBAMO /GAP random block energetic thermoplastic elastomer(ETPE) was synthesized via a solution polymerization using poly(3,3-bis(azidomethyl) oxetane)(PBAMO) as hard segment prepolymer,glycidyl azide polymer(GAP) as soft segment prepolymer,toluene diisocyanate(TDI) as curing agent,1,4-butanediol(BDO) as chain extender.The structure of the ETPE was characterized by IR,gel permeation chromatography(GPC) and X-ray diffractomer(XRD).Results show that,the number average molecular weight of the copolymer can be up to above 34000.The imino groups of carbamate in the elastomer form the hydrogen bond with azido group,and the crystallinity of PBAM 0 in copolymer is 16.6%.The optimal experimental conditions obtained by optimizing the synthesis process are determined as:in the chain extension stage,T = 130 ℃,t =40 h,M_n(PBAMO) =4100,m(PBAMO):m(GAP) = 1:1,R =1.0,w(TDI + BDO) =30%.更多还原