纳米B/NC/F_(2602)双层含能纤维的制备及其性能  

Preparation and Properties of Nano B/NC/F_(2602) Double⁃layer Energetic Fibers

作　　者：彭浩 宋小兰 王毅[2] 程志鹏[3] 安崇伟 PENG Hao;SONG Xiao-lan;WANG Yi;CHENG Zhi-peng;AN Chong-wei(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;School of Materials Science and Engineering,North University of China,Taiyuan 030051,China;Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials,School of Chemistry&Chemical Engineering,Huaiyin Normal University,Huaian 223300,China)

机构地区：[1]中北大学环境与安全工程学院,山西太原030051 [2]中北大学材料科学与工程学院,山西太原030051 [3]淮阴师范学院,化学化工学院,江苏淮安223300

出　　处：《含能材料》2023年第12期1214-1223,共10页Chinese Journal of Energetic Materials

基　　金：江苏省自然科学基金(BK20211369)。

摘　　要：为了改善纳米硼粉的分散性,提高纳米硼粉的能量输出,利用同轴静电纺丝法制备了n-B/NC/F_(2602)核壳纳米纤维;利用扫描电子显微镜(SEM)对不同芯层溶液质量分数、壳层溶液质量分数、工作电压、针头到收集器之间的距离、注射速率制备的样品进行形貌分析,探索了最佳制备条件。利用扫描电子显微镜(SEM)、X射线光电子能谱仪(XPS)、红外光谱仪(IR)对最佳制备条件制得的样品进行了形貌分析;利用燃烧性能测试、热力学模拟、DSC-TG对其进行了性能分析。研究结果表明:最佳制备条件为芯层溶液质量分数15%、壳层溶液质量分数15%、工作电压16 kV、针头到收集器之间的距离12 cm、芯层流速3.6 mL·h^(-1)、壳层流速6 mL·h^(-1);所得纺丝产物平均直径为1.32μm;燃烧性能测试测得最高燃烧压力峰为0.51 MPa,平均升压速率0.61 MPa·s^(-1),表现出优异的燃烧性能;热力学模拟显示产物平均分子量为29 g·mol^(-1),燃烧较充分;DSC-TG显示硼在n-B/NC/F_(2602)增重比原硼粉多43.43%,硼在n-B/NC/F_(2602)中的放热峰温比原硼粉降低了41℃,同轴静电纺丝法可更好地优化纤维的纳米结构。In order to improve the dispersibility and energy output of nano-boron powder,n-B/NC/F_(2602) core-shell nanofibers were prepared by coaxial electrospinning method.The morphology of the samples prepared with different core solution mass fraction,shell solution mass fraction,working voltage,distance from needle to collector and injection rate were analyzed by scanning electron microscope(SEM),and the optimum preparation conditions were explored.Scanning electron microscope(SEM),X-ray photoelectron spectrometer(XPS)and infrared spectrometer(IR)were used to analyze the morphology of the sam-ples prepared under the best preparation conditions.The combustion performance test,thermodynamic simulation and DSC-TG were used to analyze the combustion performance.The results show that the optimum preparation conditions is 15%of the core layer solution,shell solution mass fraction 15%,working voltage 16 kV,distance between needle and collector 12 cm,core flow rate 3.6 mL·h^(-1),shell flow rate 6 mL·h^(-1).The average diameter of the spinning product was 1.32μm.The combustion perfor-mance test shows that the highest peak of combustion pressure is 0.51 MPa,and the average pressure boost rate is 0.61 MPa·s^(-1),showing excellent combustion performance.Thermodynamic simulation showed that the average molecular weight of the prod-uct was 29 g·mol^(-1),and the combustion was sufficient.DSC-TG showed that the weight gain of boron in n-B/NC/F_(2602) was 43.43%more than that of the original boron powder,and the peak exothermic temperature of boron in n-B/NC/F_(2602) was 41℃ low-er than that of the original boron powder.The coaxial electrospinning method could better optimize the nanostructure of the fibers.

关 键 词：纳米硼粉 同轴静电纺丝 最佳制备条件 形貌分析 性能分析 纳米结构 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ128[化学工程—无机化工]