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GAP基聚氨酯包覆单基发射药能量与燃烧性能 预览

Energy and Combustion Properties of the GAP-base Polyurethane Coated Single-base Propellants
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摘要 为改善单基药的燃烧性能,以聚叠氮基缩水甘油醚(GAP)基聚氨酯为包覆材料,采用“预混-喷涂-固化”工艺对4/7单基药进行包覆。采用三维视频显微镜观察了包覆效果。差示扫描量热法研究了GAP基聚氨酯与单基药相容性。通过理论计算和密闭爆发器试验研究了包覆单基药能量和燃烧性能。结果表明,GAP基聚氨酯包覆层厚度较为均一,与单基药粘结良好,且二者相容。GAP基聚氨酯的加入使得发射药火药力和爆温均下降,但火药力降幅明显低于惰性高分子。GAP基聚氨酯包覆单基药具有显著的燃烧渐增性,随着包覆量的增大,渐增性逐渐增强。与单基药相比,包覆量为7.05%、9.67%和11.88%时,包覆单基药的燃烧分裂点相对压力值由0.151分别后移至0.453、0.480和0.489,燃烧渐增因子由0.090分别增大至0.293、0.340和0.358。 To improve the combustion performances of single-base propellant, GAP-base polyurethane was used as the coating material, the 4/7 single-base propellant was coated by using premixed-sprayed-cured technology. The effect of coating was observed by a three-dimensional video microscope. The compatibility of GAP-base polyurethane and single-base propellant was investigated by differential scanning calorimetry(DSC). The energies and combustion performances of coated single-base propellant were studied through theoretical calculation and closed-bomb test. The results show that the thickness of GAP-base polyurethane layer is relatively uniform, which has good adhesion and good compatibility with the single-base propellant. The introduction of GAP-base polyurethane makes the powder force and detonation temperature of gun propellant decrease, but the powder force is significantly lower than that of the inert polymer. GAP-base polyurethane coated single-base propellant has significant combustion progressivity, with increasing the coated amount, the progressivity gradually increases. Compared with the single-base propellant, the relative pressures at split point(Bs) of the GAP-base polyurethane coated single-base propellant with the coated amount of 7.05%,9.67% and 11.88%, increases from 0.151 to 0.453,0.480 and 0.489 respectively, and the values of the progression factor(Pr) increases from 0.090 to 0.293,0.340 and 0.358, respectively.
作者 郑启龙 田书春 周伟良 肖乐勤 ZHENG QI-long, TIAN Shu-chun, ZHOU Wei-Liang, XIAO Le-qin ( 1. School of Chemical Engineering,Nanjing University of Science and Technology, Nanjing 210094, China ; 2. Xi'an North Huian Chemical Industries Co. , LTD. , Xi'an 710302, China)
出处 《含能材料》 EI CAS CSCD 北大核心 2016年第8期787-792,共6页 Chinese Journal of Energetic Materials
基金 总装预研基金项目资助(9140A28020415BQ2) 国家重点基础研究规划项目(973)资助(613275)
关键词 聚叠氮基缩水甘油醚(GAP)基聚氨酯 单基药 燃烧渐增性 能量性能 GAP-base polyurethane; single-base propellant; combustion progressivity;energy property
作者简介 郑启龙(1989-),男,博士,主要从事低燃温火药相关研究。e-mail:zhengfong2577@163.com 通信联系人:周伟良(1964-),男,研究员,主要从事含能材料相关研究。e-mail:wlzhou331@163.com
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