延期药粒度级配对延期精度的影响

摘要

基于粒度级配原理，制备了不同粒度的 Si粉和 CuO粉，混制了不同级配规格的 Si-CuO延期药，进行了各规格延期药延期精度试验。结果表明：氧化剂或可燃剂粒度分布一致性越好越有利于提高延期精度；氧化剂与可燃剂3级级配不利于提高延期药延期精度。接近最佳级配的2级粒度级配，延期药的延期精度较高。%Based on the fundamental principle of particle gradation,the Si and CuO powder with different particle sizes were prepared. The Si-CuO delay composition with different gradation specifications was prepared. The delay precision test of various delay compositions was carried out. Results show that better granularity distribution consistency for oxidant or combustible agent is favorable for enhancing delay precision of delay composition. Third-grade particle gradation of the oxidant and combustible agent is not favorable for enhancing dely precision of delay composition. The delay composition with second-grade particle gradation, which is closer to the optimum particle gradation.