固体火箭技术Issue(3)：383-386,4.DOI:10.7673/j.issn.1006-2793.2015.03.016
RDX基超细球形包覆粒子的制备及热性能表征
Preparation and thermal properties of RDX based ultrafine spherical coated particles
石晓峰 1李小东 1王晶禹 1冀威1
作者信息
- 1. 中北大学 化工与环境学院，太原 030051
- 折叠
摘要
Abstract
In order to improve the safety performance of RDX,use a kind of high polymer( marked as HP⁃1) as a coating agent. RDX/HP⁃1 ultrafine spherical composite particles were prepared by spray drying technology. The mass ratio of RDX to HP⁃1 was 98 ∶ 2.Scanning electron microscope(SEM) and X⁃ray diffraction(XRD) were employed to characterize raw RDX and RDX/HP⁃1. The thermal decomposition properties and impact sensitivity were also contrasted and analyzed. The results show that RDX/HP⁃1 particles which have been modified are spherical in shape and range from 0.3μm to 3μm in size.The morphology and particle size are better than that of raw RDX,and the crystal type of RDX/HP⁃1 is not changed.The activation energy and critical temperature of thermal explosion of RDX/HP⁃1 are 191. 9 kJ/mol and 237. 2 ℃, respectively, while that of raw RDX is 174. 0 kJ/mol and 236.0 ℃,respectively.The temperature of the equal kinetic point is 235.1℃.The vacuum stability of RDX/HP⁃1 is better than that of raw RDX.The drop height of RDX/HP⁃1 and raw RDX is 61.5 cm and 20.6 cm,respectively.关键词
RDX/喷雾干燥/球形化/热安定性/撞击感度Key words
RDX/spray drying/spheroidization/thermal stability/impact sensitivity分类
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石晓峰,李小东,王晶禹,冀威..RDX基超细球形包覆粒子的制备及热性能表征[J].固体火箭技术,2015,(3):383-386,4.
