爆轰裂解可膨胀石墨制备石墨微粉(英文)  

Detonation of expandable graphite to make micron-size powder

作　　者：孙贵磊[1] 李晓杰[1] 闫鸿浩[1] 

机构地区：[1]大连理工大学工程力学系工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《新型炭材料》2007年第3期242-246,共5页New Carbon Materials

基　　金：国家自然科学基金(10572034)

摘　　要：在不改变石墨原始结构与成分的基础上,利用冲击波对可膨胀石墨进行爆轰,收集爆轰灰,进行X射线衍射、SEM的测量分析以及BET法测定比表面积。结果表明,可膨胀石墨经过爆轰后,得到了颗粒大小为1μm～10μm的石墨粉,比表面积由8.096m2/g增大至47.48m2/g,并且孔隙变得更为均匀,常规研磨设备是无法达到这种效果的。为石墨的细化提供了一种更为简便快捷而又节省能源的方法。A method to produce graphite micro-powder by detonation was provided and the detonated powder was characterized by XRD, SEM and nitrogen adsorption. Results indicated that the particle size of the detonated expandable graphite powder were in the range of l to 10μm, the BET specific surface area increased from 8.096 to 47.48 m^2/g, while the crystal parameters and flake-like morphologies changed little. Detonation offered a more convenient, quick and energy-saving method to make micrometer-sized graphite powder.

关 键 词：爆轰 可膨胀石墨 X射线 BET 

分 类 号：TQ127.1[化学工程—无机化工]