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降低发动机油的磷含量,提高燃料经济性,延长使用寿命,已是润滑油升级换代大势所趋。为了降低磷的含量,必须减少二烷基二硫代磷酸锌(ZnDDP)的使用,而二烷基二硫代氨基甲酸锌(ZnDDC)是ZnDDP最理想的替代物。为了提高油品的燃料经济性,需要加入有机钼摩擦改进剂,其中,不含硫磷的钼酸酯添加剂,因其良好的减摩保持性,其应用更为突出。为了满足更苛刻的油品高温性能要求,还必须加入烷基化二苯胺类抗氧剂(AD-PA)。因此有必要对非活性钼、ZnDDC和ADPA之间相互作用进行考察。研究表明,在非活性有机钼、ZnDDC、ADPA的三元添加剂体系中,存在着三种相互配合的协同作用:ZnDDC与非活性有机钼的抗磨协同,非活性有机钼与ADPA的抗氧化协同,以及ZnDDC与ADPA的抗氧化协同。利用非活性有机钼、ZnDDC、ADPA的三元非磷协同复合体系(OD 0401),可以大幅度提高油品的抗氧化性能、减摩性能和抗磨性能,这对发展低磷含量的GF-4和GF-5发动机润滑油具有十分积极的意义。利用该协同复合添加剂OD 0401,还可以有效地提高低档发动机油的抗氧化和抗磨性能。
Reduce the phosphorus content of engine oil, improve fuel economy and extend the service life, it is the general trend of upgrading and upgrading of lube oil. In order to reduce the phosphorus content, the use of zinc dialkyldithiophosphate (ZnDDP) must be reduced, while zinc dialkyldithiocarbamate (ZnDDC) is the most desirable alternative to ZnDDP. In order to improve the fuel economy of the oil, organic molybdenum friction modifiers need to be added. Among them, the molybdate-free phosphorous-containing additives are more prominent because of their good friction-reducing retentivity. In order to meet the more demanding high-temperature oil performance requirements, you must also add alkylated diphenylamine antioxidant (AD-PA). It is therefore necessary to investigate the interaction between inactive molybdenum, ZnDDC and ADPA. The results show that there are three synergistic synergistic effects in the system of ternary additives of inactive organic molybdenum, ZnDDC and ADPA: anti-wear synergy between ZnDDC and non-active organic molybdenum and synergistic antioxidant activity between inactive organic molybdenum and ADPA , And the antioxidant synergy of ZnDDC with ADPA. The use of non-reactive organic molybdenum, ZnDDC, ADPA ternary non-phosphorus synergetic composite system (OD 0401), can greatly improve the oil antioxidant properties, anti-friction properties and anti-wear properties, which is the development of low-phosphorus content of GF- 4 and GF-5 engine lubricating oil has a very positive significance. The use of the synergistic composite additive OD 0401, but also can effectively improve the low-grade engine oil oxidation and anti-wear properties.