T/LZBX 011-2020 Engineering machinery-based graphene-enhanced hydraulic transmission oil

Scope

Main technical content: Graphene, due to its ultra-thin nanoflake structure, excellent thermal conductivity, self-lubricating properties, mechanical properties, and good chemical stability, has shown great application value in the field of high-performance transmission oils. As an additive for transmission oils, it easily enters the friction interface to form a stable physical isolation film, preventing direct contact between the friction surfaces. Due to the above characteristics of graphene, the bearing capacity and extreme pressure anti-wear performance of transmission oils containing graphene as an additive are enhanced. However, due to the large specific surface area of graphene and the strong interaction between carbon layers, its interaction with the base oil is poor, and it is prone to agglomeration, making it difficult to be stably dispersed in transmission oils for a long time, which brings great disadvantages to its application. Existing hydraulic transmission oil standards cannot reflect the performance advantages of graphene and cannot control the possible dispersion problems caused by the application of graphene, so it is necessary to formulate new standards. On the one hand, to measure the dispersion stability of graphene in transmission oils, this standard controls its quality by simulating the high-low temperature alternating stability and high-temperature stability of graphene lubricating oils under actual working conditions; on the other hand, to measure the friction characteristics of graphene, this standard controls its quality by simulating the difference between the dynamic and static friction coefficients of graphene transmission oils and reference lubricating oils during gear shifting; finally, to match the advantage of graphene transmission oils in extending the oil change cycle, this standard specifically raises the oxidation stability index.

Development Information

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