Dear Iee Lee,

By considering the constraints imposed by application (lubrication and high temperature stability), my first option it’s to suggest you some lubricating additives based on MoS2 (molybdenum disulfide), graphite, graphene…that are generally recognized & used as solid lubricants.

On the other hand, PTFE powders can be associated with PEEK. For more information, it will be necessary to follow some recent publications from the State of the Art.

Of course, it will be necessary to find the most adapted techniques to incorporate these additives in your composites.

Good luck in your R&D study and best regards,

Marius

Dear Iee,

For eventual help and interest:

Zalaznik, M., Novak, S., Huskić, M., and Kalin, M. ( 2016) Tribological behaviour of a PEEK polymer containing solid MoS2 lubricants. Lubr. Sci., 28: 27– 42. doi: 10.1002/ls.1299.

Leyu Lin, et al., Recycled carbon fibers as reinforcements for hybrid PEEK composites with excellent friction and wear performance, Wear, Volumes 432–433, 15 August 2019, 202928

Xiaotao Qiu, Congli Fu, Aiqun Gu, Yang Gao, Xiuli Wang and Zili Yu, Preparation of high-performance PEEK anti-wear blends with melt-processable PTFE, High Performance Polymers, 10.1177/0954008319893741, (095400831989374), (2019).

Tribological behaviour of PEEK filled with CF/PTFE/Graphite sliding against stainless steel surface under water lubrication

October 2013 ARCHIVE Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology 1994-1996 (vols 208-210) 227(10):1129-1137, DOI: 10.1177/1350650113481416

https://www.researchgate.net/publication/258178361_Tribological_behaviour_of_PEEK_filled_with_CFPTFEGraphite_sliding_against_stainless_steel_surface_under_water_lubrication

TECAPEEK PVX black: PEEK MODIFIED (https://www.ensingerplastics.com/en/shapes/products/peek-tecapeek-pvx-black)

Best regards!

Many thanks for the recommendations and papers Marius. Really appreciate that. Let me go through it and hopefully found something that is workable.

Cheers

Iee Lee