非阳离子表面活性剂对煤润湿性能影响的研究

doi:10.16265/j.cnki.issn1003-3033.2018.05.021

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (5): 123-128.doi: 10.16265/j.cnki.issn1003-3033.2018.05.021

非阳离子表面活性剂对煤润湿性能影响的研究

林海飞¹ 教授, 刘宝莉^1,2, 严敏¹ 讲师, 白杨¹

1 西安科技大学安全科学与工程学院,陕西西安 710054;
2 宁夏理工学院建筑与环境学院,宁夏石嘴山 753000

收稿日期:2018-01-21 修回日期:2018-03-15 出版日期:2018-05-28 发布日期:2020-11-25
作者简介:林海飞(1979—),男,山西天镇人,博士,教授,主要从事矿山安全及瓦斯灾害防治方面的研究。E-mail:lhaifei@163.com。
基金资助:
国家自然科学基金重点资助(51734007);国家自然科学基金资助(51674192,51604220)。

Research influence of non-cationic surfactant on wettability of coal

LIN Haifei¹, LIU Baoli^1,2, YAN Min¹, BAI Yang¹

1 School of Safety Science & Engineering,Xi' an University of Science & Technology,Xi' an Shaanxi 710054,China;
2 School of Architecture and Environment,Ningxia Institute of Science and Technology,Shizuishan Ningxia 753000,China

Received:2018-01-21 Revised:2018-03-15 Online:2018-05-28 Published:2020-11-25

摘要/Abstract

摘要： 为改善煤层注水效果,有效防治矿井瓦斯灾害,研究非阳离子表面活性剂对煤体的润湿影响。选择JCY接触角测试仪和BZY表面张力测试仪测定十二烷基苯磺酸钠(SDBS)、十二烷基硫酸钠(SDS)、脂肪醇聚氧乙烯醚(AEO)和辛基苯基聚氧乙烯醚(TX-100)等4种非阳离子表面活性剂在不同质量浓度下的接触角和表面张力,并由此计算溶液的铺展系数、临界表面张力、黏附张力、黏附功和表面自由能等润湿性参数,分析4种表面活性剂对煤体润湿性能的影响。结果表明:4种非阳离子表面活性剂溶液的表面张力和接触角均与其溶液质量浓度成一阶指数衰减函数关系;铺展系数与表面活性剂溶液质量浓度成幂函数关系;黏附功和黏附张力与其溶液质量浓度均成负幂函数关系;表面自由能与其溶液质量浓度成负线性关系;SDBS和SDS溶液的临界表面张力、黏附张力、黏附功及表面自由能均小于AEO和TX-100,但铺展系数大于AEO和TX-100,说明SDBS和SDS对煤体的润湿性能优于AEO和TX-100,对煤层注水效果明显,进而抑制瓦斯浓度超限等灾害。

关键词: 非阳离子, 表面活性剂, 润湿性, 表面张力, 接触角

Abstract: To improve the effect of water injection in coal seams,and effectively prevent gas disasters in mines,influences of non-cationic surfactants on the wetting of coal were researched.A JCY contact angle tester and a BZY surface tension tester were used to determine the contact angles and surface tensions of solutions of sodium dodecyl benzene sulfonate (SDBS),sodium dodecyl sulfate (SDS),fatty alcohol polyoxyethylene ether (AEO),and (TX-100) having different mass concentrations.The solution spread coefficient,critical surface tension,adhesion tension,adhesion work,and surface free energy were calculated.The influences of 4 kinds of surfactants on the wettability of coal were analyzed.The results show that the surface tension and contact angle of the four non-cationic surfactant solutions have a negative first-order exponential function relationship with the solution mass concentration.The spreading coefficient is a power function of the surfactant solution mass concentration; both the adhesion work,and adhesion tension are a negative power function of the solution mass concentration.The surface free energy has a negative linear relationship with the solution mass concentration.The critical surface tension,adhesion tension,adhesion work,and surface free energy of SDBS and SDS solutions are less than those of AEO and TX-100 solutions,but the spreading coefficient larger than those of AEO and TX-100 solutions,which indicates that SDBS and SDS can improve wettability of coal better than AEO and TX-100,and the effect of water injection on coal seams is obvious.

Key words: non-cation, surfactant, wettability, surface tension, contact angle

中图分类号:

X936

林海飞, 刘宝莉, 严敏, 白杨. 非阳离子表面活性剂对煤润湿性能影响的研究[J]. 中国安全科学学报, 2018, 28(5): 123-128.

LIN Haifei, LIU Baoli, YAN Min, BAI Yang. Research influence of non-cationic surfactant on wettability of coal[J]. China Safety Science Journal, 2018, 28(5): 123-128.

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非阳离子表面活性剂对煤润湿性能影响的研究

Research influence of non-cationic surfactant on wettability of coal

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