摘要
以小分子交联剂作对比,重点研究了含能大分子多元醇交联剂PBT(3,3–双(叠氮甲基)氧杂环丁烷与四氢呋喃(BAMO–THF)共聚醚)三元醇(TBT)对PBT高能固体推进剂力学性能的影响。结果表明:1采用小分子交联剂,PBT推进剂具有较高的拉伸强度与模量;同时,小分子交联剂是一种键合剂,可有效阻止推进剂在断裂拉伸时基体与填料之间的"脱湿"。2采用含能大分子交联剂,PBT推进剂具有良好的最大伸长率,但断裂拉伸时推进剂的"脱湿"现象十分严重;随含能交联剂含量的变化,PBT推进剂热稳定性基本不变。
Compared with small molecular crossllnKlng agent, the influence of the energetic macromolecular polyol crosslinking agent PBT （3,3-bis（azidomethyl）oxetane and tetrahydrofurane （BAMO-THF） co-polyether） triol （TBT） on mechanical performance of PBT-based high energy solid propellant was emphatically investigated. The results show that the PBT-based propellant with small molecular crosslinking agent possesses high tensile strength and modulus. Meanwhile the small molecular crosslinking agent is a bonding agent, it can effectively prevent the ＂dewetting＂ between matrix and filler during the tensile break. The PBT-based propellant using the energetic macromolecular crosslinking agent possesses good maximum elongation, but its ＂dewetting＂ phenomenon during the tensile break is very notable. The thermal stability of the PBT-based propellant is almost constant with the variety of the energetic crosslinking agent content.
出处
《化学推进剂与高分子材料》
CAS
2016年第4期54-59,共6页
Chemical Propellants & Polymeric Materials
基金
国家自然科学基金面上项目(51572075)
