基于端羟基含氟黏合剂的含铝浇注PBX炸药性能  

Performances of Aluminized Casting PBX Explosive Based on Hydroxyl-terminated Fluorine-containing Binder

作　　者：刘慧慧[1,2] 郑申声 罗观[1] 李尚斌[1] 邓超[2] 黄玉东 白永平 LIU Hui-hui;ZHENG Shen-sheng;LUO Guan;LI Shang-bin;DENG Chao;HUANG Yu-dong;BAI Yong-ping(Institute of Chemical Materials,CAEP,Mianyang 621999,China;School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 15001,China)

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621999 [2]哈尔滨工业大学化工与化学学院,黑龙江哈尔滨150001

出　　处：《含能材料》2023年第10期979-985,共7页Chinese Journal of Energetic Materials

摘　　要：为提高炸药密度及爆轰能量,将端羟基含氟黏合剂(密度1.40 g·cm^(-3))应用于浇注PBX(polymer bonded explosive)炸药配方中。研究了甲苯二异氰酸酯(TDI)、异佛尔酮二异氰酸酯(IPDI)、六亚甲基二异氰酸酯(HDI)、六亚甲基二异氰酸酯三聚体(3HDI)四种异氰酸酯固化剂对端羟基含氟黏合剂体系粘度、固化过程的影响,同时考察了固化剂对固化成型和力学性能的影响。结果表明,固化剂可显著降低黏合剂体系粘度。在25~70℃考察温度范围内,温度越高,黏合剂体系粘度越低。60℃以上端羟基含氟黏合剂体系粘度变化平缓且各体系相差较小。三官能度异氰酸酯作为固化剂,粘度、开放期及凝胶时间更适用于浇注PBX炸药制备工艺。基于88%固含量的含铝浇注炸药配方和捏合-真空吸注-固化制备工艺,以HTPB作为对比,研究端羟基含氟黏合剂对炸药制备工艺及性能的影响。端羟基含氟黏合剂基PBX炸药浇注流变性能和固化成型质量均较好,密度和爆热分别为1.96 g·cm^(-3)和7790 J·g^(-1),较HTPB基PBX炸药分别提升6.52%和6.55%。In order to increase the density and detonation energy of the explosive,hydroxyl-terminated fluorine-containing binder(HTFB,1.40 g·cm^(-3))was applied to the formulation of casting PBX explosive(polymer bonded explosive).The effects of toluene diisocyanate(TDI),isophorone diisocyanate(IPDI),hexamethylene diisocyanate(HDI)and hexamethylene diisocyanate trimer(3HDI)on the viscosity and curing process of the binder system were studied,and the effects of curing agents on curing and mechanical properties were also investigated.Results show that the curing agent can significantly reduce the viscosity of the binder system.In the temperature range of 25-70℃,the higher the temperature,the lower the viscosity of the binder system was.Above 60℃,the viscosity of HTFB binder system changed gently and the difference of each system was small.As curing agent,the viscosity,opening time and gel time of trifunctional isocyanate are more suitable for the preparation process of casting PBX explosive.Based on the formulation of aluminum-containing casting explosive with 88%solid content and the preparation process of pinch-vacuum injection-curing,the influence of HTFB binder on the preparation process and properties of explosive was studied in comparison with HTPB.The HTFB based PBX explosive show decent casting rheological properties and curing quality,and the density and detonation heat are 1.96 g·cm^(-3) and 7790 J·g^(-1),which are 6.52% and 6.55% higher than that of HTPB based PBX explosive,respectively.

关 键 词：端羟基含氟黏合剂 含铝浇注PBX炸药 固化 粘度 爆热 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O63[理学—高分子化学]