Self-assembly fabrication of SASN@GO composites with high electrostatic safety and thermal stability performances

The high electrostatic discharge (ESD) sensitivity and mechanical sensitivity of silver acetylide-silver nitrate (SASN) seriously affects its application. For solving this problem, novel SASN@GO nanocomposites were successfully prepared by a self-assembly method. Thin sheet graphene oxide (GO) was coated on the surface of SASN, and prevented the agglomeration of SASN nanoparticles effectively. GO content in SASN@GO nanocomposites was controlled (0.5 ~ 1.5 wt%) to balance explosive performance and safety. Results reveal that SASN@(1%)GO exhibits the best thermal safety and desensitization, with thermal decomposition temperature, impact sensitivity (Is), friction sensitivity (Fs) and electrostatic energy at 50% ignition probability (E50) of 208.2°C, 1.96 J, 128 N and 0.64 mJ respectively, which are much better than that of SASN, indicating safety performances of SASN are improved through the introducetion of a small amount of GO. This work provides a strategy for reducing the explosion risk of SASN.