磁化与活性剂协同改善水湿润性能的作用机制

doi:10.16265/j.cnki.issn1003-3033.2023.03.1178

摘要/Abstract

摘要：

为进一步提高磁化与表面活性剂协同改善水湿润性能的能力,基于红外光谱、表面张力、接触角、粉尘沉降时间及降尘效率等试验,研究磁化与活性剂协同改善水湿润性能的作用机制,并经西铭矿48712综采面现场应用验证两者间协同降尘性能。结果表明:磁化对水湿润性能的改变主要通过破坏水分子间氢键结构,使得大分子团簇结构变为小分子集团来增加溶液降尘性能;活性剂通过所具有的亲水基及亲油基在溶液表面形成隔离层降低水溶液表面张力,同时,磁化还能通过改变活性剂在溶液表面的吸附方式,进一步增强活性剂溶液湿润性能及降低活性剂使用量,在磁化作用下,阴-非离子复配活性剂C临界胶束浓度比原有未磁化溶液降低25%。经现场应用,磁化与表面活性剂协同增效明显优于单一活性剂溶液。

关键词: 磁化, 表面活性剂, 协同作用, 水湿润性能, 煤尘

Abstract:

In order to further improve the synergistic ability between magnetization and surfactant in improving the water wettability, the synergistic mechanism between magnetization and surfactant was studied and analyzed based on the experiments of the infrared spectrum, surface tension, contact angle, dust settling time and dust removal efficiency. The field application of 48712 fully mechanized mining face in Ximing Mine verified the synergistic dust removal performance between them. Results showed that the magnetization changed the solution properties by breaking hydrogen bonds between water molecules, making large molecular cluster structures be changed into small molecular groups, which improved the dust removal performance of the solution. Surfactant utilized its own hydrophilic and lipophilic groups to form an isolation layer on the solution surface, significantly reducing the surface tension. Additionally, by changing the adsorption mode of the surfactant on the solution surface under the effect of magnetization, the wettability of the surfactant solution could be further enhanced and the surfactant usage was reduced. The critical micelle concentration of the compound surfactant C decreased by 25% compared with the original solution under magnetization. In field application, the synergistic effect between magnetization and surfactant is obviously better than that of the single surfactant solution.

Key words: magnetization, surfactant, synergistic effect, water wettability, coal dust

周群, 张文豪, 查舰, 李会桢, 侯晋. 磁化与活性剂协同改善水湿润性能的作用机制[J]. 中国安全科学学报, 2023, 33(3): 75-82.

ZHOU Qun, ZHANG Wenhao, ZHA Jian, LI Huizhen, HOU Jin. Synergistic mechanism between surfactants and magnetization on water wetting characteristics[J]. China Safety Science Journal, 2023, 33(3): 75-82.

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