A protection method for electrification inside a spacecraft circuit board
A technology for circuit boards and internal electrification, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of increased shielding layer thickness, high radiation-induced resistivity, and limited protective effect of internal electrification effects, and achieve lower resistivity, Strong adaptability, the effect of reducing the risk of discharge
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[0030] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0031] 1. Preparation of polyaniline nanoparticles:
[0032] (1) get xylene 80ml in the beaker of 250ml, add 1g sodium dodecylbenzenesulfonate (SDBS) therein, seal and stir 1h, wherein xylene is an organic phase solvent, and sodium dodecylbenzenesulfonate is Surfactant.
[0033] (2) get 40ml of hydrochloric acid whose volume percentage concentration is 25%, add 3.3ml of aniline to it, seal and stir for 1h;
[0034] (3) adding the aniline hydrochloric acid solution into the separating funnel, adding it dropwise to the organic phase, sealing and stirring for 1 h to obtain emulsion system 1; wherein aniline is the raw material for preparing polyaniline by reaction, and hydrochloric acid plays a role of doping, In order to improve the conductivity of polyaniline, the water in the aniline hydrochloric acid solution is combined with the hydrophilic group of...
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