摘要
基于球磨技术建立碳气凝胶超细粉体制备方法,系统地研究制备工艺中球磨时间、球料比、助磨剂等制备条件对制备产物的影响,揭示制备参数对碳气凝胶粉体特性的影响规律。结果表明:延长球磨时间有利于降低大粒子在产物中比例,但大于4 h的球磨时间对小粒子影响不大,存在“粉碎极限”效应;随着球料比的增加,中位径Dv(50)先降低再升高,球料质量比为50:1时,得到的Dv(50)最小值为2.58μm;添加助磨剂会增大产物的粒径,且不同的助磨剂增幅不同。
Carbon aerogel ultrafine powders were prepared by ball-milling method.The effects of preparation parameters such as ball-milling time,quantity ratio of ball-sample and addition of grinding aid,on the properties of products were systematically investigated.The results show that the proportion of large particles in particle size distribution of products decrease with increasing in ball-milling time,but the ball grinding time above 4 h has little influence on small particles,and that Dv(50)in particle size distribution of products first decrease and then increase with increasing in mass ratio of ball-sample,the lowest Dv(50)value is 2.58 μm when the mass ratio is 50:1,and that the particle size of products increase with the addition of the solutions of grinding aids and the influence of different grinding aids is different.
作者
于照亮
彭文联
刘清海
张彤
代晓东
YU Zhaoliang;PENG Wenlian;LIU Qinghai;ZHANG Tong;DAI Xiaodong(Chemical Defense Institute,Academy of Military Science,Beijing 102205,China)
出处
《中国粉体技术》
CAS
CSCD
2021年第2期17-21,共5页
China Powder Science and Technology
基金
国防预研基金项目,编号:30110020502
武器装备军内科研项目,编号:JK20202A060503。
关键词
碳气凝胶
超细粉体
球磨工艺
可控制备
carbon aerogels
ultrafine powder
ball-milling technology
controllable preparation
