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本文合成了二烷基二硫代磷酸钛（Ⅳ）（Ｔｉ（Ⅳ）ＤＤＰ），比较了它与商用二烷基二硫代磷酸锌（ＺＤＤＰ）的摩擦学性能的差别。结果表明，Ｔｉ（Ⅳ）ＤＤＰ在所试浓度下的最大无卡咬负荷（ＰＢ）比ＺＤＤＰ略高；相同含量时两者的摩擦系数相近，而Ｔｉ（Ⅳ）ＤＤＰ的磨斑直径比ＺＤＤＰ大。试油的红外差示光谱研究表明，Ｔｉ（Ⅳ）ＤＤＰ中的Ｐ—Ｏ—Ｃ吸收在高负荷下明显减弱。铁谱分析表明，该合成的添加剂在摩擦时的机理包括化学磨损、疲劳磨损和剥层磨损。能谱（ＥＤＸ）分析表明，磨斑表面有Ｓ、Ｐ、Ｔｉ等元素，与ＺＤＤＰ相比，用含Ｔｉ（Ⅳ）ＤＤＰ试油后磨斑表面的Ｓ、Ｐ以及添加剂金属元素的含量更少。扫描电镜（ＳＥＭ）观察表明，两添加剂的磨斑的形貌有所不同。
In this paper, Ti (Ⅳ) dialkyldithiophosphate (Ti (Ⅳ) DDP) was synthesized and its tribological properties were compared with those of commercial dialkyldithiophosphates (ZDDP). The results show that the maximum cardless bite loading (PB) of Ti (Ⅳ) DDP is slightly higher than that of ZDDP at the tested concentration. The friction coefficient of Ti (Ⅳ) DDP is similar at the same content, . Infrared differential spectroscopy of oil showed that P-O-C absorption in Ti (Ⅳ) DDP obviously decreased under high load. Iron spectrum analysis showed that the mechanism of the synthetic additives in the friction include chemical wear, fatigue wear and peeling wear. EDX analysis showed that there were S, P, Ti and other elements on the surface of the wear scar. Compared with ZDDP, the content of S, P and the metal elements of the additive on the surface of the plaque after Ti (Ⅳ) . Scanning electron microscopy (SEM) observations showed that the morphology of the two spots was different.