爆破器材2025，Vol.54Issue(5)：18-24,7.DOI:10.3969/j.issn.1001-8352.2025.05.003
一种P(GAP-ab-THF)交替嵌段含能共聚醚的合成及性能研究
Synthesis and Properties of a P(GAP-ab-THF)Alternating Block Energetic Copolyether
徐敏潇 1吕萍 2彭肖玥 3李雅楠3
作者信息
- 1. 江苏警官学院警务指挥与战术系(江苏 南京,210031)
- 2. 上海航天动力技术研究所(上海,200003)
- 3. 南京理工大学安全科学与工程学院(江苏 南京,210094)
- 折叠
摘要
Abstract
In order to improve the applicability of poly(azido-glycidyl ether)(GAP)in solid propellants,a P(GAP-ab-THF)block copolyether with alternating sequence was synthesized by nucleophilic substitution reaction of GAP prepolymer with terminal p-toluenesulfonate-based-1,4-butanediols(BDO-OTs),taking advantage of the better flexibility of tetrahydrofuran(THF).Fourier infrared spectroscopy(FTIR),nuclear magnetic resonance spectroscopy(NMR)and gel permeation chromatography(GPC)were used to confirm the alternating arrangement of GAP and THF chain segments,forming a novel alternating block molecular structure without traditional chain extenders.Glass transition temperature tgof P(GAP-ab-THF)is-59.9℃,which is significantly lower than that of GAP(tg ＝-45.0℃),indicating that the intro-duction of THF units increased the flexibility of the molecular chains.Thermal decomposition properties of P(GAP-ab-THF)were investigated by differential scanning calorimetry(DSC)and thermogravimetric(TG)analysis.The results show that peak pyrolysis temperature of P(GAP-ab-THF)is253.5℃,and it has excellent thermal stability.关键词
聚叠氮缩水甘油醚(GAP)/嵌段共聚醚/固体推进剂Key words
glycidyl azide polymer(GAP)/block copolyether/solid propellant分类
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徐敏潇,吕萍,彭肖玥,李雅楠..一种P(GAP-ab-THF)交替嵌段含能共聚醚的合成及性能研究[J].爆破器材,2025,54(5):18-24,7.
