煤矿安全2024，Vol.55Issue(12)：97-105,9.DOI:10.13347/j.cnki.mkaq.20231187
不同表面活性剂对煤的润湿性的影响研究
Study on the influence of different surfactants on the wettability of coal
摘要
Abstract
Wettability is an important attribute of coal dust suppressant,which directly affects the effect of dust suppressant on coal dust.Four surfactants,AEO-9,SDS,Tween 85,and sodium oleate,and two kinds of local coal dust in Ningxia were selected as the research objects,infrared spectroscopy,XPS analysis,zeta potential,sedimentation experiment,dynamic contact angle test and other classic testing methods were used to study the influence of coal surface functional groups and surface charge changes on wettability.In addition,the effect of coal pore structure and adsorption amount on wettability was explored by UV spectrophotometry and low-tem-perature nitrogen adsorption method.The results showed that the nonionic surfactant fatty AEO-9 and the anionic surfactant SDS had the best wetting effect on the two kinds of coal dust,the main reason is that the two surfactants are adsorbed stably with different func-tional groups on the surface of coal dust,and the adsorption rate is fast and the adsorption capacity is large at the same concentration.关键词
抑尘剂/低温氮吸附/表面活性剂/润湿性/吸附量/接触角Key words
dust suppressant/low temperature nitrogen adsorption/surfactant/wettability/adsorption capacity/contact angle分类
矿业与冶金引用本文复制引用
王晓婷,袁红,李梅..不同表面活性剂对煤的润湿性的影响研究[J].煤矿安全,2024,55(12):97-105,9.基金项目
宁夏重点研发计划资助项目(2023BDE03009) （2023BDE03009）
国家自然科学基金资助项目(2020AAC02027) （2020AAC02027）
