小口径模压可燃药筒的结构与性能  

Structure and Performance of Small-bored I ndustries Molded Combustible Cartridge Case

作　　者：邹伟伟 郝晓琴 张志勇 党海燕 周伟良[2] 田书春[3] 

机构地区：[1]北京特种机械研究所,北京100143 [2]南京理工大学化工学院,江苏南京210094 [3]西安北方惠安化学工业有限公司,陕西西安710302

出　　处：《火炸药学报》2015年第4期80-85,共6页Chinese Journal of Explosives & Propellants

基　　金：国家基础研究项目(613126)

摘　　要：为改善可燃药筒的燃尽性,在可燃药筒基础配方的基础上添加含能纤维,通过抽滤模压工艺制备了3个小口径可燃药筒,并采用压汞法、密闭爆发器、力学试验与射击试验分别对可燃药筒的孔结构特性、燃烧特性、力学性能、弹道性能等进行了研究。结果表明,可燃药筒的孔结构以狭缝形和楔形孔为主,孔径分布较宽,压汞法测得的可燃药筒的孔隙率大于25%、总孔容超过0.25cm3/g、比表面积约为20m2/g。添加耐热涂料后可燃药筒在400℃的香烟感度超过6s。含能纤维有利于提高药筒的孔隙率和能量,燃烧速度增大,并缩短燃烧结束时间,可明显改善药筒的燃尽性。可燃药筒与十九孔火药组成装药的射击试验表明,含能纤维的加入能够提高药筒装药的弹道性能。In order to improve the burning-off property,three small-bored combustible cartridge cases with energetic fibers were prepared by pulp molding method based on basic formulation. The pore structure, combustion performance,mechanical characteristics and ballistic property were analyzed by the instrusion porosimeters,the closed-bomb tests,the mechanical tests and the shooting tests.Results show that pores of combustible cartridge case are mainly slit-shaped and wedge-shaped,and pore size distribution is scattered.The porosity of combustible cartridge case is over 25%.The pore volume of combustible cartridge case is above 0.25 cm^3/g,and the specific sur-face area is about 20 m^2/g.Cigarette sensitivity of combustible cartridge case with heat-resistant coating is above 6 s at 400℃.The small-bored combustible cartridge case with the energetic fibers is beneficial to increase the porosity and the burning rate,shorten the constant volume combustion time and improve the burn-off properties.In shooting tests of charge,the ballistic property of the mixed charge of combustible cartridge case can be improved by adding energetic fibers.

关 键 词：物理化学 可燃药筒 结构特性 弹道性能 含能纤维 孔隙率 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ565[化学工程—炸药化工]