薄膜桥火工品的制备与性能研究

为了提高火工品的安全性及点火可靠性,采用掩模法,利用磁控溅射技术制备了一种蝶形金属薄膜桥,在薄膜桥表面涂15~20 mg斯蒂芬酸铅(LTNR),进行了安全电流试验、抗静电试验及与桥丝的对比试验,研究了其安全性能和点火性能,并利用红外热成像技术验证其发火时桥区的热分布。结果表明,这种金属薄膜桥有良好的抗静电性能、点火性能和机械性能;薄膜桥通电时其中心最窄处热量较集中。

Preparation and Properties of Thin Film Bridge EED

In order to improve the fire safety and reliability of an explosive device,a butterfly metal film bridge was prepared by adopting a magnetron sputtering technology with a mask.The bridge surface was smeared by 15-20 mg lead styphnate(LTNR).The current safety testing,antistatic testing and the bridge wire comparative testing were used to study its properties of safety and ignition.Infrared thermal imaging technology was used to verify the heat distribution of the thin film bridge.The results show that the metal film bridge has good anti-static,ignition and mechanical performances.The heat is concentrated in the narrowest part of the center.