论文部分内容阅读
研究了全氟壬烯氧基苯磺酸钠(OBS)与十二烷基硫酸钠(SDS)复配比对其水溶液表面张力、油水界面张力、铺展性能及发泡性能的影响。结果表明,OBS/SDS复配比对其水溶液性能影响显著,不同复配比产生不同的协同效果。部分复配体系水溶液与OBS单一组分水溶液相比,表面张力虽略有增加,但油水界面张力显著降低,因此,铺展性能显著改善,原来在环己烷上不铺展,复配后变得铺展。当OBS和SDS按摩尔比0.46∶1复配后,配成浓度为6.17 mmol/L的水溶液其铺展性能最佳,可以在环己烷上快速铺展,并且大幅度减少了OBS氟碳表面活性剂的用量,约降低了46%,大大降低了生产成本;当OBS与SDS按摩尔比为0.15∶1复配时体系油水界面性能、发泡性能的协同效果最好。同时,对不同复配比OBS/SDS的水溶液的最佳铺展浓度进行了研究,发现由表面张力确定的临界胶束浓度并非最佳铺展浓度,二者之间有一定偏差,该差异取决于氟碳表面活性剂和碳氢表面活性剂的性质及配比。
The effects of compounding ratio of sodium perfluorononenoxybenzenesulfonate (SDS) and sodium perfluoro nonyloxybenzene sulfonate (SDS) on the surface tension, oil-water interfacial tension, spreading property and foaming property were studied. The results showed that OBS / SDS complex ratio significantly affected the performance of its aqueous solution, and different compounding ratios produced different synergistic effects. Partially mixed system aqueous solution compared with OBS single component aqueous solution, although the surface tension slightly increased, but the oil-water interfacial tension decreased significantly, therefore, the spreading performance significantly improved, the original does not spread on the cyclohexane, complex after the spread . When the molar ratio of OBS to SDS was 0.46:1, the best spreading performance was obtained when the concentration of OBS was 7.16 mmol / L, which could be quickly spread on cyclohexane and greatly reduced OBS fluorocarbon surfactant Of the amount of about 46%, greatly reducing production costs; when OBS and SDS molar ratio of 0.15: 1 when the system oil-water interfacial performance, the synergistic effect of the best foaming performance. At the same time, the optimum spreading concentration of aqueous solution of OBS / SDS with different compounding ratio was studied and it was found that the critical micelle concentration determined by surface tension was not the optimal spreading concentration with some deviation between the two Properties of Carbon Surfactants and Hydrocarbon Surfactants and Proportioning.