高钝感半导体桥发火性能研究

doi:10.3969/j.issn.1000-1093.2019.05.007

兵工学报 ›› 2019, Vol. 40 ›› Issue (5): 954-961.doi: 10.3969/j.issn.1000-1093.2019.05.007

高钝感半导体桥发火性能研究

郑子龙，张文超，秦志春，吴刚刚，俞春培，王嘉鑫，陈亚杰，叶家海，田桂蓉

（南京理工大学化工学院，江苏南京 210094）

收稿日期:2018-07-30 修回日期:2018-07-30 上线日期:2019-07-26
通讯作者: 张文超（1977—），男，副研究员，博士生导师 E-mail:zhangwenchao@njust.edu.cn
作者简介:郑子龙（1992—），男，博士研究生。 E-mail: zilongzh@yeah.net
基金资助:
国家自然科学基金项目（51576101）；中央高校基本科研业务费专项项目（30918015102）；江苏省“青蓝工程”资助项目（2016年）；江苏省研究生科研与实践创新计划项目（KYCX18_0478）

Research on the Ignition Performance of High Insensitive Semiconductor Bridge

ZHENG Zilong, ZHANG Wenchao, QIN Zhichun, WU Ganggang, YU Chunpei, WANG Jiaxin, CHEN Yajie, YE Jiahai, TIAN Guirong

(School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)

Received:2018-07-30 Revised:2018-07-30 Online:2019-07-26

摘要/Abstract

摘要： 为了提高半导体桥（SCB）火工品的安全性，在SCB极脚间并联负温度系数（NTC）热敏电阻，可使NTC-SCB半导体桥满足1.5 A不发火、最高2.0 A不发火的高钝感要求。研究了1.0 A和 1.5 A通电条件下NTC热敏电阻与SCB并联后的分流情况，通过电容放电、恒流激励下的发火实验和发火感度实验对比分析了SCB、NTC-SCB和1.5 A、2.25 W、5 min安全电流实验后的NTC-SCB半导体桥发火性能。结果表明：在1.0 A、1.00 W、5 min和1.5 A、2.25 W、5 min安全电流实验条件下，NTC热敏电阻的分流比约为35%和62%，达到热平衡时的温度大约为112 ℃和170 ℃；在33 μF、30 V电容放电条件下并联NTC热敏电阻及1.5 A、2.25 W、5 min安全电流实验后，SCB的发火时间和临界发火能量均没有出现显著性变化；在7.0 A恒流激励下，由于输入能量速率较慢以及NTC热敏电阻分流的原因，发火时间和临界发火能量均有较明显提高；SCB的99.9%发火电流在并联NTC热敏电阻后从2.329 A增加到3.709 A，NTC-SCB的99.9%发火电流在1.5 A、2.25 W、5 min安全电流实验后从3.709 A增加到4.285 A，仍然可用于提供大于5.571 A电流的火工装置。

关键词: 半导体桥, 火工品, 高钝感, 热敏电阻, 发火性能

Abstract: A negative temperature coefficient (NTC)-semiconductor bridge (SCB) was prepared to improve the safety of SCB explosive initiator by paralleling a NTC thermistor to SCB, which is able to meet the requirement of high insensitiveness in 1.5 A and maximum 2.0 A non-firing stimuli tests. The split ratios at 1.0 A and 1.5 A after paralleling NTC thermistor to SCB were analyzed. Capacitance discharge ignition test, constant current excitation test and ignition sensitivity test were made to study the ignition performances of SCB, NTC-SCB and NTC-SCB after 1.5 A, 2.25 W and 5 min safe current test. Results show that the split ratios of NTC thermistor are about 35% and 62%， and thermal equilibrium temperatures are about 112 ℃ and 170 ℃ in 1.0 A, 1.00 W and 5 min, and 1.5 A, 2.25 W and 5 min safe current test, respectively. The ignition time and critical ignition energy are not show significant changes at 33 μF/30 V, but significantly increase at 7.0 A due to slow energy input rate and NTC thermistor shunt. Furthermore, 99.9% firing current of NTC-SCB increases from 2.329 A to 3.709 A after paralleling NTC thermistor and further increases from 3.709 A to 4.285 A after 1.5 A, 2.25 W and 5 min safe current test, which can be applied to the devices with ignition current greater than 5.571 A. Key

Key words: semiconductorbridge, explosiveinitiator, highinsensitivity, thermistor, ignitionperformance

中图分类号:

TJ45⁺9

郑子龙，张文超，秦志春，吴刚刚，俞春培，王嘉鑫，陈亚杰，叶家海，田桂蓉. 高钝感半导体桥发火性能研究[J]. 兵工学报, 2019, 40(5): 954-961.

ZHENG Zilong, ZHANG Wenchao, QIN Zhichun, WU Ganggang, YU Chunpei, WANG Jiaxin, CHEN Yajie, YE Jiahai, TIAN Guirong. Research on the Ignition Performance of High Insensitive Semiconductor Bridge[J]. Acta Armamentarii, 2019, 40(5): 954-961.

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高钝感半导体桥发火性能研究

Research on the Ignition Performance of High Insensitive Semiconductor Bridge

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