低碳醇对氟碳与碳氢表面活性剂复配体系泡沫性能的影响

Effect of low carbon alcohols on foaming properties of fluorocarbon and hydrocarbon surfactant mixed system

普通碳氢表面活性剂与磺基甜菜碱氟碳表面活性剂(FS)相比,泡沫性能和耐油性不好。醇通常强烈地影响表面活性剂的自组织行为,醇的加入能提高表面活性剂的泡沫性能。本文采用Ross-Miles法探讨了低碳醇对FS与阴离子碳氢表面活性剂(AOS)复配体系FS/AOS泡沫性能的影响。结果表明,当甲醇、无水乙醇、异丙醇浓度分别为5%、3%、3%,复配体系FS/AOS的起泡性能和泡沫稳定性仍较好,在加入醇之后,煤油含量60%～80%时起泡性能和泡沫稳定性仍较好。不同碳数的低碳醇对复配体系泡沫性能的影响规律为:发泡性能甲醇最好、异丙醇次之、无水乙醇最差,异丙醇的稳泡性能较甲醇和无水乙醇差。

Compared to sulfobetaine fluorocarbon surfactant （FS）,the foaming properties and oil resistance of ordinary hydrocarbon surfactants are bad.Alcohols can usually affect self-organizing behavior and improve foaming properties of surfactants.The complexed systems of FS and anionic hydrocarbon surfactant （AOS） were investigated by using the Ross-Miles method in the paper.The influence of alcohols on the foaming properties of the complexed system was studied.The results showed that the complexed system FS/AOS still had good foam characteristics when the contents of methanol,ethanol,isopropanol were 5%,3%,3% respectively.The foaming performance and foam stability were still good when the kerosene content was 60%—80% after adding the alcohol.The effect of different carbon number alcohols on the complexed systems was as follows.By adding methanol,the foaming performance was the best,the next was isopropanol,and the worst was ethanol.However,by adding isopropanol,the foam stability of the complexed systems was worse than methanol and ethanol.