GAP基聚氨酯包覆单基发射药能量与燃烧性能  

Energy and Combustion Properties of the GAP-base Polyurethane Coated Single-base Propellants

作　　者：郑启龙[1] 田书春[2] 周伟良[1] 肖乐勤[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]西安北方惠安化学工业有限公司,陕西西安710302

出　　处：《含能材料》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)

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.

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 

分 类 号：TQ562[化学工程—炸药化工]