摘要
以Impranil DLF(聚氨酯和密胺甲醛树脂为包覆层分别采用破乳法及原位聚合法包覆了ε-HNIW,并将其应用于NEPE推进剂。对这两种NEPE推进剂进行了力学性能测试及SEM形貌观察。结果表明,密胺树脂包覆ε-HNIW推进剂最大延伸率εm比未包覆的ε-HNIW推进剂提高75.2%,断裂延伸率εb提高62.16%,εb/εm比值由1.24降低至1.03,接近于1,"脱湿"问题得到显著改善,推进剂表面ε-HNIW脱落较少,黏合结实;含Impranil DLF(聚氨酯包覆ε-HNIW的推进剂综合力学性能提高不大,εb/εm比为1.10,推进剂表面ε-HNIW有部分脱落。
ε-HNIW was respectively coated with Impranil DLF polyurethane and melamine-formaldehyde resin by demulsification and in-situ condensation polymerization. The mechanical properties and morphology of NEPE propellants containing the coated ε-HNIW were characterized. The results show that compared with the propellant containing uncoated ε-HNIW,the εm and the εb of the propellant containing ε-HNIW coated with melamine-formaldehyde resin increases by 75.2% and 62.16% respectively,and the εb/εm ratio decreases to 1.03. The dewetting problem is improved significantly, and the ε-HNIW was bonded on the propellant surface firmly. The εm and the εb of the propellant containing ε-HNIW coated with Impranil DLF polyurethane increases a little, the εb/εm ratio is 1. 10 and some ε-HNIW crystals shed from the propellant surface.
出处
《含能材料》
EI
CAS
CSCD
2008年第1期60-62,共3页
Chinese Journal of Energetic Materials
基金
总装预研基金项目(12060451867)
