TFE/P Based Elastomers Expand Seal/Lubricant Compatibility

Hull, D. E.; Eggers, R.; Wellner, Steven J.

doi:10.4271/920709

Cited by 1 publication

(1 citation statement)

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“…Fluorosilicone is utilized in aerospace for applications such as propellant binders, liquid propellant system bladders, and high-speed aircraft fuel tank sealants [137]. TFE/P, recognized as a high-performance material, is used in various lubrication systems with different engine oils, transmission fluids, and gear lubricants [138], and recently in Lithium-ion batteries as binders for electrode materials [139]. FKM is notable for its widespread usage, owing to its environmental stability, even in extreme conditions, to the high bond energy and chemical structure of the C-F bond.…”

Section: Pfas In Seals and O-ringsmentioning

confidence: 99%

Forever Chemicals, Per-and Polyfluoroalkyl Substances (PFAS), in Lubrication

Dias,

Bons,

Kumar

et al. 2024

Lubricants

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Per- and polyfluoroalkyl substances (PFAS), also known as forever chemicals, exhibit exceptional chemical stability and resistance to environmental degradation thanks to their strong C-F bonds and nonpolar nature. However, their widespread use and persistence have a devastating impact on the environment. This review examines the roles of PFAS in tribological applications, specifically in lubricants and lubricating systems. This article focuses on conventional and advanced lubricants, including ionic liquids (ILs) and their use in modern automotive vehicles. The objective of this paper is to provide a comprehensive overview of the adverse impacts of PFAS whilst acknowledging their outstanding performance in surface coatings, composite materials, and as additives in oils and greases. The pathways through which PFAS are introduced into the environment via lubricating systems such as in seals and O-rings are identified, alongside their subsequent dispersion routes and the interfaces across which they interact. Furthermore, we examine the toxicological implications of PFAS exposure on terrestrial and aquatic life forms, including plants, animals, and humans, along with the ecological consequences of bioaccumulation and biomagnification across trophic levels and ecosystems. This article ends with potential remediation strategies for PFAS use, including advanced treatment technologies, biodegradation, recovery and recycling methods, and the search for more environmentally benign alternatives.

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Section: Pfas In Seals and O-ringsmentioning

confidence: 99%