研究了3种用于安全气囊气体发生剂的碱式硝酸铜,通过Tank容器试验,以及宏观粒度、微观粒度、微观形貌的对比,得出如下结论:微观粒度反映了气流粉碎的程度,只能作为评价原材料的参考;而宏观粒度是一个能够更接近干法混合工艺的参数,其反映了原材料粒度的分布,以及不同原材料混合接触的情况。对采用3种碱式硝酸铜在配方制作过程中加水量不一的情况进行了研究,表明原材料的比表面积不同造成了这一差异,同时进一步造成了粒子不同的微观形貌,影响燃烧性能。 Three types of basic cupric nitrate for airbag gas generant were studied. The following conclusions were drawn from the tank container test, the macroscopic particle size, the micro-size and the micro-morphology. The micro-particle size reflects the degree of airflow crushing, Can be used as a reference for evaluating raw materials; while macro-granularity is a parameter that can be closer to the dry-mix process, reflecting the distribution of raw material particle size and mixed contact of different raw materials. The results showed that the difference of specific surface area of ​​raw materials caused this difference, and at the same time further caused the different microscopic morphology of the particles and affected the combustion performance.