摘要
采用基团加和法估算了以聚叠氮缩水甘油醚(GAP)、聚硝酸酯缩水甘油醚(PGN)、聚2,2-双叠氮甲基氧杂环丁烷(PBAMO)、聚2-甲基-2-硝酸酯基氧杂环丁烷(PNIMMO)、2,2-双叠氮甲基氧杂环丁烷(BAMO)2-叠氮甲基2-甲基氧杂环丁烷(AMMO)共聚物(PBAMO/AMMO)等为软段,以二苯基甲烷二异氰酸酯、甲苯二异氰酸酯、异氟尔酮二异氰酸酯等为硬段,1,4-丁二醇为扩链剂的含能热塑性聚氨酯弹性体(ETPE)的生成焓。结果表明,随着硬段含量的增加,ETPE的生成焓降低,当硬段为MDI时,所制备的ETPE的生成焓高于其他硬段聚合物,叠氮化合物为软段的ETPE生成焓高于硝酸酯类化合物的。故通过对ETPE的能量预估和结构推断可以为设计具有高能量水平的ETPE提供依据。
The enthalpies of formation for energetic thermoplastic polyurethane elastomers （ETPE） based on glycidyl azidc polymer （ GAP ）, poly glycidyl nitrate （ PGN ）, poly his-azidomethyl oxetane （ PBAM O ）, poly （ 3-nitratomethyl-3-mcthyloxetane ） （ PNIM M O ）, bis-azidomethyl oxetane-azidomethyl methyl oxetane （BAMO/AMMO） copolymer as soft segments, diphenylmethane diisocyanate （MDI）, toluene diisocyanate （TDI）, isophorone diisocyanate （IPDI） as hard segments and butadiene （BDO） as chain extender were estimated by group additivity method. The results show that the enthalpies arc affected by the different soft segment type, hard segement type and the hard segment contents. The enthalpies of formation of the ETPE reduce with the increasing of the hard segments contents. The enthalpy of formation of MDI based ETPE is higher than that of the other isocynates. The enthalpies of formation of azide polymers based ETPEs are higher than that of nitrate ester polymers. The estimated enthalpies data of ETPEs can help to design high energy propellants.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2009年第2期131-136,共6页
Chinese Journal of Energetic Materials
关键词
物理化学
固体推进剂
含能热塑性聚氨酯弹性体(ETPE)
生成焓
physical chemistry
solid propellant
energetic thermoplastic polyurethane elastomers （ ETPE ）
enthalpy of formation
