贴膜式Ni-Cr换能元设计及性能研究  

Design and Performance Study of Film-applied Ni-Cr Transducer Elements

作　　者：艾沛延 赵婉君 吴琴钟 杨康 郭凯 唐新月 韩克华[1,2] 焦清介 AI Pei-yan;ZHAO Wan-Jun;WU Qin-zhong;YANG Kang;GUO Kai;TANG Xin-yue;HAN Ke-hua;JIAO Qing-jie(State Key Laboratory of Transicent Chemical Effects and Control,Shaanxi Applied Physics and Chemistry Research Institute,Xi’an,710061;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081)

机构地区：[1]陕西应用物理化学研究所瞬态化学效应与控制全国重点实验室,陕西西安710061 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《火工品》2024年第5期46-53,共8页Initiators & Pyrotechnics

基　　金：国家技术基础项目(JZX7J202311BZ003000)。

摘　　要：通过热压工艺将5μm的Ni-Cr薄膜附着在聚酰亚胺薄膜上制备了贴膜式Ni-Cr薄膜,采用激光刻蚀加工工艺制备了贴膜式Ni-Cr换能元电桥,仿真优化设计了蝶形、S形换能元电桥,并开展了2种形状电桥的贴膜式Ni-Cr换能元的伏安特性、最大不熔断电流、50 ms脉冲恒流电爆特性以及发火特性试验研究。研究结果表明:桥区长度为3 mm的换能元电桥在1 A 5 min恒流激励后桥区温度最低;贴膜式Ni-Cr换能元在33μF电容放电时,随着充电电压的升高断桥时间缩短,蝶形和S形未发生断桥的电压分别为16,20 V;蝶形和S形换能元在5 min恒流脉冲输入下的最大不熔断电流分别为1.3,1.2 A;在50 ms脉冲恒流电爆时,随着施加电流幅度的不断增加,其工作电压也不断增高,其断桥时间越来越短,S形换能元和蝶形换能元分别在2.4,2.3 A时电桥未发生爆炸;33μF、28 V电容放电下贴膜式Ni-Cr换能元可以点燃斯蒂芬酸铅,并正常发火。Through the hot pressing process,the 5μm Ni-Cr film was attached to the polyimide film to prepare a Ni-Cr film,the film-applied Ni-Cr transducer bridge was prepared using laser etching process,the dimensions of butterfly bridge area and S-shaped bridge area were optimized by simulation,and the tests of volt-ampere characteristics,the maximum non-fusing current,50 ms pulse constant current explosion characteristics and the ignition characteristics of the film-applied Ni-Cr transducer elements with two shapes of bridge area were conducted.The results show that:the temperature of transducer element bridge under 1 A 5 min constant current excitation is the lowest;Under 33μF capacitor discharge,with the increase of charge voltage,the bridge break time decreases,the non-break voltage for butterfly and S-shaped bridge is 16 V and 20 V,respectively;Under 5 min constant current pulse input,the maximum non-fusing current of butterfly and S-shaped transducer element is 1.3 A and 1.2 A,respectively;In the 50 ms impulse constant current electric explosion test,with the amplitude of the applied current increase,the operating voltage also increases,and the bridge break time is shortened,the S-shaped transducer and the butterfly transducer do not explode at 2.4 A and 2.3 A,respectively;The film applied Ni-Cr transducer can ignite the lead styphnate,and can fire normally under 33μF,28 V capicitor discharge.

关 键 词：Ni-Cr桥膜 贴膜式Ni-Cr 换能元 发火特性 电爆 

分 类 号：TJ450.3[兵器科学与技术—火炮、自动武器与弹药工程]