硬脂酸复合铝粉的制备表征及声光性能研究  

Study on Preparation,Characterization and Acousto-Optic Properties of Stearic Acid Coated Aluminum Powder

作　　者：景黄丽 吴莹 赵奇志 严霄 刘泉洪 刘勇 JING Huangli;WU Ying;ZHAO Qizhi;YAN Xiao;LIU Quanhong;LIU Yong(Unit 61699,Yichang 443200,China)

机构地区：[1]61699部队,湖北宜昌443200

出　　处：《防化研究》2023年第6期72-76,共5页CBRN DEFENSE

摘　　要：雾化铝粉是一种高能金属燃料,广泛应用于推进剂、可燃剂、发光剂等领域。为防止雾化铝粉氧化及吸水团聚,本研究以硬脂酸(Stearic Acid,SA)为包覆剂,通过溶液共混法对雾化铝粉进行表面包覆处理,制备了复合铝粉(SA/Al),并对复合铝粉的耐腐蚀及抗吸湿性能进行了测试。在此基础上,采用复合铝粉制备了声光剂,并测试了其安定性及声光性能。结果表明,硬脂酸可对铝粉实现有效包覆,所得复合铝粉的耐腐蚀性、抗吸湿性均有显著提高;以复合铝粉制备的声光剂声光性能有所提高,安定性良好,其中8%SA/Al的综合性能最优,其吸湿性的数值为0.0219%,仅为原料铝粉的1/60;1.5 m处声压级为179.27 dB,较原料铝粉提高了1.7 dB;发光强度为0.95×10^(7)Cd,与原料铝粉持平。Atomized aluminum powder,as a high-energy metal fuel,is widely used in the fields of propellants,combustibles and illuminants.In order to prevent atomized aluminum powder from oxidation and water absorption agglomeration,stearic acid(SA)was used as coating agent,and composite aluminum powder(SA/Al)was prepared by solution mixing method,the surface coating treatment of atomized aluminum powder was carried out,and the corrosion resistance and moisture absorption resistance of the composite aluminum powder were tested.Based on this result,the acousto-optic agent was prepared by composite aluminum powder,and its stability and acoustooptic properties were tested.The results showed that the aluminum powder could be effectively coated with stearic acid,and the corrosion resistance and moisture absorption resistance of the aluminum composite powder were significantly improved.The acousto-optic properties of the aluminum composite powder were improved,and the stability was good.The comprehensive properties of 8%SA/Al were the best,and the moisture adsorption rate was 0.0219%,which was only 1/60 of the raw aluminum powder.The sound pressure level at 1.5 m was 179.27 dB,which was 1.7 dB higher than that of raw aluminum powder.The luminous intensity was 0.95×10^(7) Cd,which was the same as that of raw aluminum powder.

关 键 词：硬脂酸 复合铝粉 溶液共混法 耐腐蚀性 抗吸湿性 声光性能 

分 类 号：TQ560.6[化学工程—炸药化工]