Study On Dielectrics Radioresistance And Antistatic Protection Technology In Extreme Condition

Because the demand of construction, weight, electric power and electronics system, a lot kinds of dielectrics be used in spacecrafts. Some dielectrics had to be exposed directly in space environment. When spacecrafts run in the space, not only it must suffer straight from high vacuum, undergo the change between high and low temperature, but also bear the violet radiation, electron beam irradiation, and atomic oxygen erode in low orbit. Besides these, the earth magnetic substorm environment which is the fist reason that lead spacecraft to be charged. When charging to certain degree, the pulse discharges between or inside dielectrics will happened, in high energy discharge situation, the electrical circuit or circuit board will be breakdown. Discharge pulses current and discharge radio wave that is another main reason which bring danger to spacecraft because discharge will truly influence the normal work of the electronic circuit.In this dissertation, the dielecrtric charging mechanism,the radioresistance and antistatic protection technology in extremity(space) condition are discussed and studied. Conductor or semiconductor powders that is used added into modified epoxide resin compose thin films and coating for antistatic aim is analyzed. The paint will be used to spray on the surface of kapton or epoxy circuit board for modify surface dielectric properties of the circuit in space environment or similar environment: The paint can eliminates or decreases the charging phenomena of the surface and inside of the circuit board from change between high and low temperature ands radiation in space environment . The main target of study eliminates dielectric surface different static voltages and pulse discharge forming threaten to electronics system in the extreme (space)condition.In the meantime, compound materials optical, thermal and stability also are measured in similar environment, the results of testing are good.