含Fe^(3+)乳化基质的热行为实验研究  

Experimental study on thermal behavior of emulsified substrates containing Fe^(3+)

作　　者：李洪伟[1] 孙建辉 王新阁[2] 聂华君 杨策 杨赛群 LI Hong-wei;SUN Jian-hui;WANG Xin-ge;NIE Hua-jun;YANG Ce;YANG Sai-qun(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China;No.32127 Unit of PLA,Dalian 116100,Liaoning,China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]中国人民解放军32127部队,辽宁大连116100

出　　处：《工程爆破》2023年第4期122-128,共7页Engineering Blasting

摘　　要：为研究乳化基质中混入Fe^(3+)对其热分解特性的影响,采用差式扫描热量法(DSC)和恒温热解实验研究了含不同质量分数Fe^(3+)的乳化基质的热分解行为。结果表明:在DSC测试中,Fe^(3+)降低了乳化基质热分解反应初期的活化能,促进了热分解反应的发生,在反应的中后期,Fe^(3+)表现出一定的抑制作用,利用atava-esták法的计算表明Fe^(3+)的加入将使乳化基质的三维扩散机理变为随机成核和随后生长机理;在恒温热解实验中,随着环境温度由240℃升高到260℃,含Fe^(3+)的乳化基质的热分解起始时间更早,反应程度更剧烈,促进乳化基质热分解的效果越显著,并与其浓度成正比。因此在实际生产作业中,应定期检修生产、存储设备,避免因金属老化腐蚀、意外损坏等因素导致乳化基质中混入过多Fe^(3+)。To study the effect of Fe^(3+)on thermal decomposition properties of emulsified matrix,the thermal decomposition behavior of emulsion matrix with different mass fraction of Fe^(3+)was studied by DSC and isothermal pyrolysis test.The results showed that in DSC test,Fe^(3+)reduced the activation energy at the initial stage of the thermal decomposition reaction of the emulsion matrix and promoted the occurrence of the thermal decomposition reaction.In the middle and late stages of the reaction,Fe^(3+)showed a certain inhibitory effect.The atava-estak method was used to calculate that the 3D diffusion mechanism of the emulsified matrix was changed to random nucleation and subsequent growth mechanism by the addition of Fe^(3+).In the constant temperature pyrolysis experiment,as the ambient temperature increases from 240℃to 260℃,the initiation time of the thermal decomposition of the emulsified matrix containing Fe^(3+)is earlier,the degree of reaction is more intense,and the effect of promoting the thermal decomposition of the emulsified matrix is more significant,and is proportional to its concentration.Therefore,in the actual production operation,production and storage equipment should be regularly repaired to avoid excessive Fe^(3+)in the emulsification matrix due to metal aging,corrosion,accidental damage and other factors.

关 键 词：乳化基质 DSC Fe^(3+) 热分解 

分 类 号：TQ560.1[化学工程—炸药化工] TD235[矿业工程—矿井建设]