摘要
采用溶胶-凝胶技术与乳化技术相结合的方法制备了RDX/RF纳米凝胶复合含能微球。凝胶纳米复合含能微球的大小主要受表面活性剂和反应温度以及时间的影响。通过扫描电镜(SEM)、比表面积仪(BET)、X射线粉末衍射仪(XRD)、差热分析仪(DTA)等研究了凝胶复合含能微球的结构性能。结果显示:RDX/RF纳米凝胶复合含能微球大小在50~200nm之间,RDX炸药粒子在RF凝胶基体的纳米孔洞中均匀结晶析出。RDX/RF凝胶复合含能微球中RDX的平均晶粒度在30~50nm之间,凝胶微球的比表面积为56.3m2/g。粒径减小后,复合材料的热分解峰提前约33℃。
The RDX/RF gel composite energetic particles were prepared by means of emulsion process and sol-gel techniques.The particle size was controlled by the composition of the surfactant system,temperature and time of reaction.The structure of gel particles were characterized by scanning electron microscopy(SEM),BET method,X-ray powder diffraction(XRD),and differential thermal analysis(DTA).Result shows that the particles have a size of 50-200 nm,the explosive is crystallized within the nano-dimensional pores of RF gel matrix.The mean crystal size of RDX in RDX/RF gel composite energetic particles are 30-50 nm.The specific surface area of RDX/RF gel composite energetic particles is 56.3 m2.g-1 and the temperature of exothermal peak decrease about 33 ℃.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2010年第6期643-647,共5页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院化工材料研究所所长基金(26010920)
关键词
有机化学
溶胶-凝胶
乳化
凝胶微球
表面活性剂
复合含能材料
黑索今
organic chemistry; sol-gel; emulsion process; gel particle; surfactant; composite energetic metarial; RDX