低硫柔性石墨的制备新工艺及微观结构分析  

New technique study and micro-structure analysis of non-rigid low-sulphur graphite preparation

作　　者：高山[1] 甄捷[1] 陈宇飞[1] 王慎敏[1] 

机构地区：[1]哈尔滨理工大学应用科学学院,黑龙江哈尔滨150080

出　　处：《哈尔滨工业大学学报》2005年第11期1546-1548,共3页Journal of Harbin Institute of Technology

基　　金：黑龙江省教育厅科学技术研究项目(10541060)

摘　　要：针对传统方法制得的膨胀石墨的硫含量高的问题,新工艺采用高锰酸钾和浓硫酸作复合氧化剂,三氯化铁作插入剂,制得的可膨胀石墨采用脱除硫酸、磷酸浸渍、脱磷酸、水洗至中性、低温干燥、1 050℃高温膨化、压缩空气换气等工艺,使制得的柔性石墨的硫含量低于500μg/g.用扫描电子显微镜可观察到柔性石墨的层间距离明显增大.A new technique, with KMH2 and FeCl3 as a mixer, can be adopted to make expandable graphite which, through the techniques of removing sulphur acid, phosphoric acid socking and removal, neutralization by washing in water, drying with low temperature, expanding under heat of 1 050, depressing and removing air, etc. , can be made into non-rigid low-sulphur graphite with a sulphur content under 500. Obviously increased inner surface distances can be observed with a scanning electronic microscope.

关 键 词：柔性石墨 磷酸 制备 硫含量 微观结构 

分 类 号：O613[理学—无机化学]