含能材料2018，Vol.26Issue(6)：530-536,7.DOI:10.11943/j.issn.1006-9941.2018.06.011
PVAc弹性微球包覆的高能化学点火具的点火性能
Ignition Performance of the High Energy Chemical Igniter Coated with a PVAc Elastic Microsphere
摘要
Abstract
To reduce the effect of formability, combustion duration, burning rate and other parameters of the chemical igniter on the dust combustion and explosion experiments and improve the accuracy and repeatability of experimental data, the chemical ig-niter coated with a polyvinyl acetate (PVAc) elastic microsphere was developed.Firstly, the ignition powders were desensitized by paraffin wax, then a few drops of petroleum ether was added to the ignition powder to form a spherical ignition powder, then the spherical ignition powder was coated by ethanol solution of PVAc and dried in vacuum.In the process of drying, the petrole-um ether was volatilized to make the coated film expand and the ignition powder bulk.The PVAc elastic hollow microsphere pre-pared has the advantages of good formability, strong toughness, water proof and oxidation resistance, etc.The deflagration char-acteristics of the igniter were studied by a high-speed camera and compared with other three types of igniters.The experimental results show that the igniter coated by PVAc elastic microsphere has a spherical flame propagation, a moderate flame velocity, and a stable ignition reliability, which can reduce the experimental data error of the dust explosion because of the influences of the igniter.关键词
点火药/粉尘爆炸/聚醋酸乙烯脂(PVAc)/微球包覆/粉尘云/燃速Key words
ignition powder/dust explosion/polyvinyl acetate(PVAc)/microsphere coating/dust cloud/burning rate分类
军事科技引用本文复制引用
刘文近,程扬帆,陆松来,韩体飞,汪泉,沈兆武..PVAc弹性微球包覆的高能化学点火具的点火性能[J].含能材料,2018,26(6):530-536,7.基金项目
国家自然科学基金资助(11602001 （）
51604009) （）
安徽省自然科学基金青年项目资助(1608085QA15) （1608085QA15）
中科院材料力学行为与设计重点实验室开放课题(lmbd201701) （lmbd201701）
