摘要
为防止纳米铝粉在空气中进一步氧化失活，利用不同硅烷偶联剂对纳米铝粉预处理，后用支化聚叠氮缩水甘油醚（B—GAP）对其进行表面包覆改性，制得B—GAP／nano—Al复合粒子，利用扫描电镜（SEM）、能谱分析仪（EDS）及X射线衍射仪（XRD）对包覆前后的纳米铝粉进行表征分析，并通过光电子能谱仪（XPS）对复合粒子的形成原理进行讨论，结果表明，相对于偶联剂乙烯基三乙氧基硅烷（Al51），在偶联剂叫一氨基丙基三乙氧基硅烷（KH-550）作用下，B—GAP包覆纳米铝粉效果较好，复合粒子为具有核壳结构的球形粒子。
To prevent further oxidation and deactivation of nano-aluminum powder in the air, the nano-aluminum powder was pretreated with different silane coupling agents, and then coated by branched glycidyl azide polymer（B-GAP）for surface modification using sedimentation. Thus,B-GAP/nano-Al composite particles were prepared. The characteristic of nano-almninum powders before and after modification were analysized with scanning electron microscopy, energy spectrum instrument and X-ray diffrac, tion instrument. The principle of the formation of the composite particles was discussed by means of photoelectron spectroscopy instrument. Results show that comparing with the coupling agent Al51, the nano-aluminum powder was coated better under the effect of c, oupling agent KH-550, and the composite particles have a core-shell structure of spherical partieles.
基金
燃烧与爆炸技术重点实验室基金项目（62202060103）
关键词
纳米铝粉
硅烷偶联剂
B—GAP
包覆
核壳粒子
nano-aluminum powder
silane coupling agents
B-GAP
coated
core-shell particles
