Four kinds of hexanitrohexaazaisowurtzitane(CL-20) based composite particles were prepared by slurry method using CL-20 as filler,wax and Estane5703 as desensitizers.The crystal form,state of coatiing,thermal decomposition temperature of samples before and after coating were characterized by X-ray diffractometer(XRD),scanning electron microscope(SEM),differential scanning calorimeter(DSC),and the mechanical sensitivity was tested.Results show that CL-20 is coated by wax and Estane5703 perfectly,and the ε crystal form of CL-20 was not changed.The impact sensitivity and friction sensitivity of CL-20 decrease from 100％ to 40％ and 48％,and thermal decomposition peak temperature increases by 5.4 ℃ compared with raw material when the wax and Estane5703 content are all 2％.%为降低六硝基六氮杂异伍兹烷(CL-20)的机械感度,采用水悬浮法,以钝感剂石蜡及高分子聚合物Estane5703为包覆原料包覆CL-20,制备了4种包覆颗粒.用X射线衍射仪(XRD)、扫描电镜(SEM)、差示扫描量热分析(DSC)、机械感度测试方法表征包覆前后CL-20的晶型、包覆状态、热分解温度、机械感度.结果表明,石蜡与Estane5703可完整包覆CL-20,且包覆后CL-20的ε晶型未发生改变.采用水悬浮法包覆CL-20,当石蜡/Estane5703含量为总体系质量的2％/2％时,CL-20的撞击感度由100％降低至40％,摩擦感度由100％降低至48％;放热峰温提高5.4 ℃.
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