详细信息

干燥方式对白炭黑性能的影响    

Influence of drying methods on properties of silica

文献类型:期刊文献

中文题名:干燥方式对白炭黑性能的影响

英文题名:Influence of drying methods on properties of silica

作者:陈鹏宇[1];程娜[1];宓淑莹[1];周梅芳[1];姜海波[1];李春忠[1]

机构:[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

年份:2017

卷号:23

期号:3

起止页码:30

中文期刊名:中国粉体技术

外文期刊名:China Powder Science and Technology

收录:北大核心:【北大核心2014】;CSCD:【CSCD_E2017_2018】;

基金:国家自然科学基金项目;编号:91534202;91534122;上海市基础重点研究项目;编号:15JC1401300;国家国际科技合作专项项目;编号:2015DFA51220

语种:中文

中文关键词:白炭黑;湿法研磨;干燥方式;粒径

外文关键词:silica; wet grinding; drying methods ; particlediameter

摘要:利用冷冻、喷雾、真空、烘箱干燥等4种干燥方式对对湿法研磨后的白炭黑浆料进行处理,研究干燥方式对白炭黑粒径、吸油值、比表面积和微观形貌等理化性能的影响。结果表明:研磨干燥后的白炭黑,中位径d_(50)由9.6μm减小到110 nm以下,吸油值(DBP)与比表面积(BET)均小于研磨前;冷冻干燥样品的中位径d_(50)减小为73 nm,吸油值(2.15 mL/g)以及比表面积(144 m^2/g)与原样最为接近。
Silica slurry obtained by wet grinding was dried by four drying methods such as freeze drying, spray drying, vacuum drying and oven drying. The influence of drying methods on the physical and chemical properties of silica after grinding was studied by the test of particle diameter, oil absorption value (DBP value), specific surface area (BET value) and microstructure. The results show that silica's median particle diameter (d50) drops from 9.6 μm to 110 nm and its DBP value and BET value are lower than the pristine silica. The median particle diameter of silica atter freeze drying drops to 73 nm, while its DBP value (2.15 mL/g) and BET value (144 m^2/g) are nearest to pristine silica.

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