摘要
采用溶胶-凝胶法,以1,2-环氧丙烷作为Fe(Ⅲ)离子的水解促进剂,在温和无毒的条件下制备了ADN/Fe2O3复合湿凝胶,再将复合湿凝胶进行超临界CO2萃取后,成功获得ADN/Fe2O3气凝胶。用TEM、SEM、EDS、IR DSC和感度试验对上述样品的形貌、结构、热行为和机械感度进行了表征。结果表明,制得的ADN/Fe2O3纳米复合氧化剂的粒径为50～10nm,撞击感度和摩擦感度均随着其中ADN含量的减小而降低,分解放热峰较原料ADN有所提前,熔化吸热峰消失。
By using 1,2-epoxypropane as the agent for speeding up the hydrolyzation of Fe（Ⅲ） ions,ADN/Fe2O3 composite wet gel was prepared by sol-gel method under a mild and nontoxic condition.Consequently,the ADN/Fe2O3 aerogel was obtained by means of supercritical CO2 fluid extraction.TEM,SEM,EDS,IR,DSC and sensitivity test were employed to characterize the appearance,structure,thermal behaviour and mechanical sensitivity of the samples.The results indicate that the as-prepared ADN/Fe2O3 nanoparticles are about 50-100 nm in diameter.As the decrease of the mass of ADN,the nanocomposites become much insensitive to mechanical stimuli.Moreover,the ADN/Fe2O3 nanoparticles decomposes at lower temperature with the disappearance of melting endothermic peak.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2011年第5期63-66,共4页
Chinese Journal of Explosives & Propellants
关键词
材料科学
溶胶-凝胶法
超临界CO2萃取
纳米ADN复合氧化剂
机械感度
热分解
material science
sol-gel method
supercritical CO2 fluid extraction
ADN nanocomposites
mechanical sensitivity
thermal decomposition
