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A spacecraft interacts with its space plasma environment. The high-energy electrons in space can cause natural spacecraft surface charging and deep dielectric charging. Both surface charging and deep dielectric charging may affect the instruments and normal operation of the spacecraft. In this paper, we report on the conductivity property of modified polyimide (PI) matrix resin. The modification was...
When spacecraft is running on the geostationary earth orbit(GEO), because of space plasma environment effect and the irradiation influence of high energy electron, the surface and depth of dielectric materials can be charged, these factors can affect the normal operation of spacecraft greatly. In this paper, the matrix resin Polyimide(PI) was modified by adding micron powder filler into, and a new...
In this paper, the effects on direct current (dc) surface flashover characteristics of polyimide (PI) in vacuum are experimental studied in the case of electron beam irradiation, accompanied with the theoretical analysis. The results show that the flashover voltage under 0.5∼20keV beam electron radiation is higher than no radiation case; the higher energy of the electron is, the higher flashover voltage...
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