极压抗磨剂在GTL基础油中的感受性研究*

为探讨GTL基础油与常用极压抗磨剂感受性，分别将二烷基二硫代磷酸锌（T203）、磷酸三甲酚酯（T306）、二烷基二硫代氨基甲酸钼（S-525）、钼胺络合物（MOLYVAN 855）、硫磷酸复酯胺盐（T307）、硫化异丁烯（T321）和合成酯（VANLUBE 7723）与GTL基础油进行调配，利用四球摩擦试验机分别考察单剂和复配后油样的最大无卡咬负荷、磨斑直径和摩擦因数。结果表明：T307、MOLYVAN 855在GTL基础油中极压性和抗磨性最优；T203和VANLUBE 7723复配、T203和MOLYVAN 855复配对GTL基础油极压性和抗磨性能提升明显，而T203和S-525复配具有最佳的减摩效果；T306分别和S-525、T307和T321复配时表现出的极压性能变化趋势相似，而T306和T307复配在表现出良好极压性能的同时，兼具有较好的减摩抗磨效果。

Research on Sensitivity of Extreme-pressure and Anti-wear Additives in GTL Base Oil

In order to investagate the sensitivity of GTL base oil and common extreme pressure antiwear agents,the additives of Zinc dialkyldithiophosphate (T203),tricresoll phosphate (T306),molybdenum dialkyldithiocarbamate (S-525),molybdenum amine complex (MOLYVAN 855),thiophosphate complex (T307),isobutene sulfide (T321) and synthetic ester (VANLUBE 7723) were mixed with GTL base oil respectively,and the maximum non-seizure load,wear scar diameter and friction coefficient of oil samples after single additive and compound additives were investigated by four-ball test rig.The results show that T307 and MOLYVAN 855 have the best extreme-pressure and anti-wear properties in GTL base oils.The combination of T203 and VANLUBE 7723 and T203 and MOLYVAN 855 significantly improves the extreme-pressure and anti-wear properties of GTL base oil,while the combination of T203 and S-525 has the best friction reduction effect.When T306 blends with S-525,T307 and T321 respectively,the extreme-pressure performance is similar.While the blending of T306 and T307 show good extreme pressure performance and good friction reduction and anti-wear effect.