爆破器材2024，Vol.53Issue(6)：12-17,6.DOI:10.3969/j.issn.1001-8352.2024.06.002
低特征信号推进剂用氧化剂高氯酸钠的防吸湿方法研究
Anti Moisture Methods of Sodium Perchlorate as an Oxidant Used in Low Characteristic Signal Propellants
摘要
Abstract
The gas-phase products generated by the thermal decomposition of sodium perchlorate(NaClO4)do not contain HCl gas and have stable properties.Therefore,NaClO4 has great application prospects in making low characteristic signal propellants.However,NaClO4 has strong hygroscopicity,and its application in propellants can lead to deterioration of the propellant process,making it difficult to process and shape.In order to reduce the hygroscopicity of NaClO4 and pro-mote its application in low characteristic signal propellants,sodium perchlorate/octadecylamine(NaClO4/ODA)compo-sites were prepared by mechanical mixing method.The morphology,crystal structure,thermal decomposition performance,hydrophilicity,and hygroscopicity of the samples were characterized by scanning electron microscopy(SEM),Fourier transform infrared spectrometer(FT-IR),Raman spectrometer,X-ray diffraction,DSC-TG synchronous thermal analyzer,contact angle analyzer,and constant temperature and humidity tests.The characterization results indicate that ODA has successfully coated the surface of NaClO4.After being stored at 10℃ and relative humidity of 30％ for 36 h,both NaClO4 and NaClO4/ODA composites do not absorb moisture.After being stored at 10℃ and relative humidity of 40％ for 60 h,both NaClO4 and NaClO4/ODA composites show varying degrees of moisture absorption.The moisture absorption rate of NaClO4/ODA composite with a mass fraction of 1.0％ of the coating agent decreases by 63％ compared to NaClO4,indi-cating that the coating has a significant effect on reducing the moisture absorption of NaClO4.And the anti moisture treat-ment has no effect on the heat release of NaClO4.关键词
高氯酸钠/低特征信号/推进剂/吸湿性Key words
sodium perchlorate/low characteristic signal/propellant/hygroscopicity分类
化学工程引用本文复制引用
茆俊卿,凌志刚,曾江保,李先聚,刘杰..低特征信号推进剂用氧化剂高氯酸钠的防吸湿方法研究[J].爆破器材,2024,53(6):12-17,6.基金项目
内蒙古自治区自然科学基金(2020BS02018) （2020BS02018）
