基础油对复合钛基润滑脂性能的影响

以单一矿物基础油、合成油、复配矿物基础油分别制备复合钛基润滑脂(简称复合钛基脂),考察所制得复合钛基脂的稠度、剪切安定性、胶体安定性、热安定性和抗磨减摩性能。结果表明:基础油的种类对复合钛基脂的性能影响较大,矿物基础油更适合作为制备复合钛基脂的基础油,其中单一矿物基础油T110制备的复合钛基脂的滴点为326℃,钢网分油率为0.8%,平均摩擦因数为0.073,理化性能优异,但是抗磨减摩性能有待提高;复配矿物基础油制备的复合钛基脂的理化性能和抗磨减摩性能均较好,综合性能优异,其中矿物基础油600N和MVI500按质量比1∶1调合的复配矿物基础油是制备复合钛基脂的理想复配基础油,所制备的复合钛基脂的滴点为333℃,钢网分油率仅为0.7%,平均摩擦因数为0.061,各方面性能均处于良好水平。

EFFECT OF BASE OIL ON PROPERTIES OF TITANIUM COMPLEX GREASE

Titanium complex grease was prepared from single mineral base oil, synthetic oil and compound mineral base oil, respectively. The consistency, shear stability, colloidal stability, thermal stability, anti-wear and anti-friction properties of titanium-base composite grease were investigated. The results showed that the type of base oil had a great influence on the performance of titanium complex grease, and mineral base oil is more suitable as base oil for preparing titanium composite grease. The drop point of titanium-base composite grease prepared by T110 mineral oil was 326 °C, the steel mesh oil separation rate was 0.8%, the average friction coefficient was 0.073, and its physical and chemical properties are excellent, however, the anti-wear and anti-friction properties need to be improved; the physical and chemical properties and anti-wear of the titanium-base composite grease prepared by the composite of mineral base oils had a good anti-friction performance with an excellent comprehensive performance. The mixed mineral base oil of 600N and MVI500 mineral base oil at a ratio of 1:1 was proved an ideal compound base oil for preparing titanium-base composite grease, and the prepared titanium base grease had a dropping point of 333 °C, a steel mesh oil separation rate of only 0.7%, an average friction factor of 0.061, showing good performance in all aspects.