低静电感度叠氮化铜起爆薄膜的制备及其性能

The high electrostatic sensitivity of copper azide limits its practical application, and carbon fiber as a frame material can effectively reduce its electrostatic safety. A carbon-based copper azide initiating film was prepared using the cheap and easily available copper acetate as the raw materialby carbonization and azide. The prepared copper azide composite film has certain flexibility, and the copper azide nanosheets are uniformly grown on the surface of carbon fibers. The excellent electrical conductivity of carbon fibers can reduce its electrostatic sensitivity. The precursors, carbide intermediates, and copper azide films are all characterized in detail by scanning electron microscope, infrared, X-ray diffraction, specific surface area test and thermogravimetric analysis etc. The test results show that the electrostatic sensitivity of the prepared copper azide initiating film is reduced to 1.2 mJ and the sensitivity to flame is increased to 45 cm since carbon fiber has the excellent electrical and thermal conductivities. The 0.65 mg copper azide initiating film can successfully ignite at a voltage of 10 V or more under the discharge condition of a 33 μF capacitor, and can pit the lead plate.