以山梨糖醇酐三油酸酯(Span-85)作为过程控制剂,通过氢化铝锂还原无水氯化铝,采用高能机械球磨法制备了纳米铝粉(n-Al).利用扫描电镜(SEM)、高分辨率透射电镜(TEM)、X射线衍射(XRD)仪、傅里叶变换红外光谱(FTIR)仪及X射线光电子能谱(XPS)仪对其形貌和结构进行了表征.用差示扫描量热仪(DSC)对ADN(二硝酰胺铵)、n-Al/ADN的热分解反应特性进行了研究.结果表明:纳米铝粉属立方晶系,表面包覆有无定型Al2O3氧化物及部分表面活性剂Span-85,同时制备的纳米铝粉试样中含少量AlCl3·6H2O杂质;此方法制备的n-Al粒子对ADN液化温度几乎没有影响,但放热分解温度明显增大,且ADN分解由多重峰变为单一的尖峰.
Aluminum nanopowders (n-Al) were synthesized via reduction of aluminum chloride anhydrous by lithium aluminum hydride with a mechanical ball-milling method,using Span-85 as process control agent.The surface morphologies and structures were characterized by scanning electron microscope (SEM),high resolution transmission election microscope (TEM),X-ray diffraction (XRD) instrument,Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS).The thermal decomposition process of ADN and composite system n-Al/ADN were investigated using differential scanning calorimetry (DSC).The results show that aluminum nanopowders belong to the cubic crystal system,and their surface is coated with amorphous oxide A12O3 and surfactant Span-85.At the same time,the samples contain a small amount of impurities A1C13·6H2O.Aluminum nanopowders have little influence on the liquefaction temperature of ADN,but the decomposition temperature increases significantly,and the decomposition of ADN becomes from multiple peak into a single spike.
参考文献
| [1] | 舒波,夏书标,蔡晓兰,娄翠,黄世弘.片状铝粉制备的研究[J].南方金属,2006(03):21-23. |
| [2] | 徐容,聂福德,刘春,姜凯.ADN的热分解性能研究[J].含能材料,2000(04):175-177. |
| [3] | 梁晓蕾,刘才林,任先艳,杨海君,王绵,王用,冉卷平.铝纳米粒子的液相化学还原法制备与表征[J].含能材料,2013(03):339-342. |
| [4] | 刘海水,李铁龙,金朝晖,弓彦章,张云霞.Span/Tween为混合表面活性剂的微乳体系研究及纳米铁制备[J].过程工程学报,2007(01):67-70. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%