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分子机制研究对微型结构差异的效果 八烯聚氧乙烯 (OPEO) 表面活性剂在石的可湿性
Jiajun Li1, Guochao Yan1, Shaoqi Kong1
1College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
Molecules (Basel, Switzerland)
|June 28, 2023
概括
有效的除尘剂对于煤矿安全至关重要. 这项研究发现,OP4表面活性剂通过增强表面极性和水附着性来显著改善煤炭湿和粉尘抑制.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 吸入的煤尘是采矿的主要危害,影响安全,空气质量和矿工健康.
- 开发有效的防尘剂对于减轻这些风险至关重要.
研究的目的:
- 评估非离子表面活性剂 (OP4,OP9,OP13) 对于改善石湿和粉尘抑制.
- 为了阐明它们不同的湿特性背后的微观机制.
主要方法:
- 测量表面张力,接触角度测试和湿动力学建模.
- 里埃变换红外光谱 (FTIR),X射线光电子光谱 (XPS) 和紫外光谱.
- 扫描电子显微镜 (SEM) 和分子动力学 (MD) 模拟.
主要成果:
- OP4表现出优越的湿,实现了最低的表面张力 (27.182 mN/m) 和接触角度 (20.1°).
- OP4具有最高的吸附能力 (133.45 mg/g),增加了煤表面的极性和水粘附.
- MD模拟表明,较短的乙烯氧化物链 (如OP4) 通过π-π相互作用增强吸附.
结论:
- 由于其强烈的吸附性和增强煤炭表面水友性的能力,OP4是一种高度有效的灰尘抑制剂.
- 这些发现为在采矿操作中设计先进的防尘系统提供了基础.
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