聚环氧丙醇/环氧丙烷超支化聚合物的抗乳化性能研究

Study on the Anti-emulsifying Behavior of Hyperbranched Polyglycerol Modified with Short Oligo(propylene oxide) Segments

摘要:

本文在对不同结构的聚环氧丙醇/环氧丙烷超支化聚合物在水数、表面张力、浊点表征基础上，研究了聚合物添加浓度、温度对150SN基础油抗乳化性能的影响。研究结果发现：HLB值、浓度均显著影响各体系的抗乳化性能。当浓度在2.0×10-2g/L时，HLB值（亲水-亲油平衡值）14.7~14.9左右（水数法）、浊点58.6℃～65.1℃的超支化聚合物显示了较好的抗乳化性能。此外，升高温度有利于抗乳化性能的提升。

Abstract:

Based on the study of water number, cloud point, surface tension of hyperbranched polyglycerol modified with short oligo(propylene oxide) segments with different structure, the effect of polymer concentration and temperature on the anti-emulsifying behavior of 150SN lubricating base oil is investigated. The results show that HLB (hydrophile-lipophile balance) value, concentration of the polymer significantly affects the anti-emulsifying properties. The HLB value of 14.7~14.9 (water number method) and the cloud point of 58.6°C~65.1°C are favorable for showing better anti-emulsify behavior at the polymer concentration of 2.0×10-2 g/L. Moverover, the anti-emulsifying behavior of these polymers are improved with temperature increasing.