CAJ | 학술논문

采用水热法制备出纳米 CoFe2 O4颗粒，再通过超声混合法制备出 Al／CoFe2 O4混合物，用 X 射线粉末衍射（XRD）和扫描电子显微镜-能谱仪（SEM-EDS）测试了其成分和形貌特征。按 CoFe2 O4或 Al／CoFe2 O4与 RDX 质量比1∶4、通过超声混合法分别制备出 CoFe2 O4／RDX 、Al／CoFe2 O4／RDX 样品，并用差示扫描量热法（DSC）研究了 CoFe2 O4和 Al／CoFe2 O4对 RDX 热分解的影响。结果表明，纳米 CoFe2 O4和 Al／ CoFe2 O4的加入不会改变RDX 热分解过程遵循的最可几机理函数，但混合物的热分解峰温明显降低；且 CoFe2 O4／RDX 和 Al／CoFe2 O4／RDX 混合体系的表观活化能相对于 RDX 有所降低，说明 CoFe2 O4和 Al／CoFe2 O4的加入促进了 RDX 的分解。
채용수열법제비출납미 CoFe2 O4과립，재통과초성혼합법제비출 Al／CoFe2 O4혼합물，용 X 사선분말연사（XRD）화소묘전자현미경-능보의（SEM-EDS）측시료기성분화형모특정。안 CoFe2 O4혹 Al／CoFe2 O4여 RDX 질량비1∶4、통과초성혼합법분별제비출 CoFe2 O4／RDX 、Al／CoFe2 O4／RDX 양품，병용차시소묘량열법（DSC）연구료 CoFe2 O4화 Al／CoFe2 O4대 RDX 열분해적영향。결과표명，납미 CoFe2 O4화 Al／ CoFe2 O4적가입불회개변RDX 열분해과정준순적최가궤궤리함수，단혼합물적열분해봉온명현강저；차 CoFe2 O4／RDX 화 Al／CoFe2 O4／RDX 혼합체계적표관활화능상대우 RDX 유소강저，설명 CoFe2 O4화 Al／CoFe2 O4적가입촉진료 RDX 적분해。
Nanoparticle CoFe2 O4 and Al/CoFe2 O4 were prepared by hydrothermal method and ultrasonic mixing method,respectively.Their composition and morphology features were measured using X-ray diffraction (XRD)and Scanning Electron Microscope-Energy Dispersive Spectrometry (SEM-EDS).CoFe2 O4/RDX and Al/CoFe2 O4/RDX,according to the mass ratio of 1∶4,were prepared by ultrasonic mixing method.The effects of CoFe2 O4 and Al/CoFe2 O4 on the thermal decomposition of RDX were investigated by a differential scanning calorimetry (DSC). The results show that the addition of nano CoFe2 O4 and Al/CoFe2 O4 does not change the most probable mechanism function of the decomposition process of RDX.While after CoFe2 O4 and Al/CoFe2 O4 being added,the peak temper-ature of the thermal decomposition for the mixture exhibits a significant decrease.Moreover,the apparent activation energies of the mixed systems of CoFe2 O4/RDX and Al/CoFe2 O4/RDX decrease in comparison with that of RDX, indicating that the addition of CoFe2 O4 and Al/CoFe2 O4 can promote the decomposition of RDX.