摘要
采用溶胶-凝胶法及超临界干燥技术,以聚丙烯酸(PAA)作为分散剂,1,2-环氧丙烷作为Cu(Ⅱ)离子水解促进剂制备了CuO气凝胶,并在温和、无毒的条件下制备了纳米铝热剂Al/CuO。采用比表面测试法(BET)、扫描电子显微镜(SEM)、X射线能谱仪(EDS)、X射线衍射(XRD)、差热分析法(DTA)-差示扫描量热法(DSC)等方法对样品的结构和热反应特性进行表征。结果表明,纳米Al粒子与CuO气凝胶粒子均匀复合,形成Al/CuO。纳米铝热剂Al/CuO的反应放热峰分别出现在598℃和752℃左右,快速燃烧过程伴随明亮火焰。
CuO aerogel was prepared by sol-gel method combined with supercritical fluid drying. Polyacrylic acid and 1 ~2-propylene oxide were used as dispersant and accelerant of Cu（]]） ion hydrolysis. AI/CuO nanothermite was prepared under the moderate and non-toxic condition. The characteristics of structure and thermal behavior were investigated by Brunauer Emmett Teller（BET） ,scanning electron microscopy（ SEM ） , energy dispersive spectrometer（ EDS ） , X-ray diffraction （ XRD ） , differential thermal analysis （DTA） - differential scanning calorimetry（DSC）. Results show nano-AI particles and CuO aerogel are composited uniformly. From DSC curve,Al/CuO nanothermite has two exothermic peaks at 598 ℃ and 752 ℃. And the rapid combustion process is accompanied with bright flame.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2013年第1期39-43,共5页
Chinese Journal of Energetic Materials
基金
国家自然科学基金资助(11002128)
