基于α-烯烃磺酸钠发泡体系, 选择了具有增粘作用的稳泡剂——平均分子量(molecular weight, MW) 为300 万, 1 000 万和200 万1 400 万的聚丙烯酰胺和羧甲基纤维素钠(carboxymethyl cellulose, CMC), 以及具强化液膜质量作用的稳泡剂——辛醇和十二醇. 通过加入不同浓度不同类型的稳泡剂, 研究了稳泡剂对泡沫体系的发泡性能、稳定性及油水界面张力的影响. 结果表明: 聚丙烯酰胺降低了泡沫体系的发泡能力和稳定性, 同时使得油水界面张力有所上升; CMC 在适当浓度下可增强泡沫的稳定性; 醇类对泡沫体系的稳定性造成了严重影响.
This paper selects foam stabilizers based on the alpha-olefin sulfonate foaming system. Polyacrylamide and carboxymethyl cellulose (CMC) with average molecular weight (MW) of 3 million, 10 million, and 2 million to 14 million play the tackifying role. Octanol and dodecanol strengthen the liquid film. With the foam stabilizer added to the foaming system, the foaming properties are studied, including stability and oil-water interfacial tension. The results show that polyacrylamide reduces foaming capacity and stability of the foam system, and increases the oil-water interfacial tension. CMC enhances foam stability in appropriate concentrations. Alcohol seriously affects the foam system under the experimental conditions.
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