表面活性剂对铝热轧用润滑剂性能的影响

来源期刊：中南大学学报(自然科学版)2006年第1期

论文作者：周亚军 周立 钟掘

文章页码：96 - 102

关键词：表面活性剂性;铝热轧;乳化液;粒径;亲水亲油平衡值;表面张力

Key words：surfactant; hot rolling; emulsion; particle size; HLB value; surface tension

摘    要：通过对乳化液稳定性、粒径及其分布和表面张力的分析,研究了T702, SPAN80,油酸三乙醇胺皂,Tween80和NP-10这5种表面活性剂及其复配对铝热轧润滑剂性能的影响。研究结果表明:不同的表面活性剂对乳化液的稳定性有较大的影响,在基础油中添加油性剂,可与表面活性剂发挥协同效应,增加其乳化性能,降低乳液的表面张力,提高乳液的润湿性和稳定性。油酸三乙醇胺皂与Tween80或NP-10复配能使乳化液分散更细、更均匀,进一步降低其表面张力,提高乳化液的润湿性和稳定性;乳化剂的类型、亲水亲油平衡值及其用量和复配技术对乳化液的粒径有较大影响。

Abstract: The influences of five kinds of surfactants, such as T702, SPAN80, triethanolamine oleate, Tween80, NP-10, and their blends on the properties of lubricant used in hot rolling aluminum were investigated by analyzing the stability, particle size and surface tension of the oil-in-water (O/W) emulsions. The results show that the surfactants have great effects on the stability of O/W emulsions. The addition of small amount of polar lubricant added in a non-polar mineralbased oil can bring about a considerable increase of the emulsifying capacity of surfactant, obvious reduction in the surface tension, and remarkable improvement in the wettability and the stability of O/W emulsion. The mixture of triethanolamine oleate and Tween80 or NP-10 can make the O/W emulsion particle smaller and more uniform than other surfactants, and increase thewettability and the stability of O/W emulsion. The type, hydrophile lipophile balance (HLB) value,content and their mixture of surfactant have great influence on the emulsion droplet diameter.