Research On Energetic Materials Electrostatic Electrification Characteristics

Static phenomenon exists in people’s work and life, when the electrostatic charge accumulated to a certain extent on the electrostatic discharge phenomenon may occur, so that the accumulation of static electricity surrounding a security risk.With the rapid development of science and technology, energy-containing materials are widely used in the national economic construction and national defense,such as weapons systems,aerospace,blasting, and many other areas of life-saving devices, the performance of electrostatic hazards caused increasingly serious.Electrostatic response of energetic materials safe use of its great significance, the accumulation of electrostatic properties is one very important component.Powder of Energetic Materials accumulation of electrostatic charging, developed a set of electrostatic powder accumulation in the pilot plant. Chute may tilt angle, length control,facilitate the replacement of different materials chute.Electrostatic liquid spray process electrification theoretical analysis of the situation, developed a set of liquid electrostatic accumulation testing device for the injection pressure,time,precise control.Two test device uses a high-precision digital meter to charge an electrostatic charge accumulation measurements show that the amount of the charge curve and time may be recorded by a computer.There is a big difference between different powder charge characteristics of energetic materials with different material chute after rubbing. Overall, the RDX preferably from power after passivation largest copper and aluminum both conductive properties of the chutecompared to the small amount of static electricity accumulation of kraft paper.Electrostatic powder accumulated value of the size of energetic materials with increasing length of the chute increases, showing a good linear relationship between growth; with the inclination angle of the chute is increasing, the accumulation of static electricity from the first performance increases after the law is reduced, reached a maximum within a range of angles.RDX passivation maximum angle of generating static electricity is Between 50 ° ~55 °.type Ⅰ RDX / AL composite explosive is between 55 ° ~ 60 °。 type Ⅱ RDX / AL composite explosive is between 60 ° ~ 65 ° Ⅰ aluminum powder between 55 ° ~60 °.Energetic particle size diameter powder material is smaller, the greater the accumulation of static electricity.Different pressure, injection timing and the kind of liquid material nozzle having a significant impact on the accumulation of electrostatic properties of the liquid injection process.Pure ethyl acetate solution of static electricity from the largest, with different electrostatic powder accumulation law, the liquid material ejected by the conductor after the accumulation of static discharge greater than through the insulating material.The longer the injection time, the greater the accumulation of static electricity, both of which showed a good linear relationship; With the increase of injection pressure, the pressure drops on the nozzle increases, the greater the accumulation of static electricity.