包结络合法制备β-CD/RDX微胶囊及其性能表征（英文）

Synthesis and properties of β-CD/RDX microcapsules by host-guest inclusion complexation

介绍了在含能材料领域一种新的包覆方法-包结络合法。基于成熟的微胶囊技术用包结络合法,制备了β-CD/RDX微胶囊。通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、和差示扫描量热仪(DSC)对粒子进行性能表征;XRD分析显示β-CD/RDX微胶囊晶型结构没有发生转变;SEM可看出,β-CD/RDX微胶囊为表面光滑的实心类球形颗粒,几乎没有包覆缺陷;由DSC分析,与原料RDX相比,β-CD/RDX微球的活化焓增加了10.88 kJ/mol,热爆炸临界温度升高了9.21℃,自加速分解温度TSDAT提高了9.22℃,热稳定性有明显提高.

A new coating method in the field of energetic materials,host-guest inclusion complexation was introduced.Based on the mature microcapsule technique,β-CD/RDX microcapsules were prepared by inclusion complexation.The properties of the particles were characterized by scanning electron microscopy（ SEM）,X-ray diffraction（ XRD）,and differential scanning calorimetry（ DSC）.XRD analysis show that the crystal structure of β-CD/RDX microcapsule does change in comparison to the pure RDX.The SEM results show that β-CD/RDX microcapsules are smooth,solid spherical particles with almost no coating defects.The DSC results show that compared with RDX,the activation energy of β-CD/RDX microspheres has been increased by 10.88 kJ/mol,and the thermal critical temperature has been improved by 9.21 ℃,whereas the self-accelerating decomposition temperature TSDATis enhanced by 9.22 ℃.Therefore,the thermal decomposition performance has been improved significantly.