Lubricating Materials for Mechanisms Operating in Space

Prozhega, M. V.; Albagachiev, A. Yu.; Smirnov, N. I.

doi:10.3103/s106836661804013x

Cited by 11 publications

(2 citation statements)

References 5 publications

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“…Fluorine-containing compounds have found a wide application in many fields of human activity. Despite a lack of natural organofluorines [1], industrial fluoroorganic derivatives are applied as specific medicines [2][3][4], agrochemicals [5], refrigerants [6], in the aerospace industry as materials with low densification temperature and high thermal stability (>300 • C) (oligomeric and polymeric perfluoroalkylene ethers) [7,8], etc. Huge attention is also paid to fluorine-containing and perfluorinated polymers [9].…”

Section: Introductionmentioning

confidence: 99%

Direct Fluorination as Method of Improvement of Operational Properties of Polymeric Materials

et al. 2020

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Direct fluorination of polymers is a widely utilized technique for chemical modification. Such introduction of fluorine into the chemical structure of polymeric materials leads to laminates with highly fluorinated surface layer. The physicochemical properties of this layer are similar to those of perfluorinated polymers that differ by a unique combination of chemical resistance, weak adhesion, low cohesion, and permittivity, often barrier properties, etc. Surface modification by elemental fluorine allows one to avoid laborious synthesis of perfluoropolymers and impart such properties to industrial polymeric materials. The current review is devoted to a detailed consideration of wetting by water, energy characteristics of surfaces, adhesion, mechanical and electrical properties of the polymers, and composites after the direct fluorination.

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Section: Introductionmentioning

confidence: 99%

Direct Fluorination as Method of Improvement of Operational Properties of Polymeric Materials

et al. 2020

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“…In grease lubrication, auxiliary units are not required unlike the liquid lubrication which adds the weight and volume to lubrication units, for e.g. pumps, oil filters, etc Owing to these advantages several researchers [57] have been attracted towards the grease as lubricant in space, Ueura et al (2008) conducted the life test on strain wave gearing system, under the MAC based grease lubrication in air and vacuum. It was observed that life of strain wave gearing system is short in vacuum as compared in air [58].…”

Section: Low Temperature Workabilitymentioning

confidence: 99%

The state of art on lubrication methods in space environment

Nautiyal,

Singh,

Gautam

et al. 2024

Phys. Scr.

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Space tribology is a very big aspect of space exploration, despite of this fact, there is a dearth of coherent and concise literature available in the field of space tribology. It becomes difficult to understand the tribological behaviour of mating bodies under the extreme environmental circumstances in space due to their potential chemical and physical interactions. The radiation, vacuum, environmental conditions and temperature, are the factors which affects the friction and wear behaviour of mating surfaces and may alter the chemical structure of solid or liquid lubricant. The combination of tribo-physical and tribo-chemical interactions makes the tribological analysis very difficult to understand. The lack of understanding and ignorance might be the reason for not addressing this issue in the past. This review contains the qualitative and quantitative information on the tribological behaviour of different types of liquid lubricants, greases, soft and hard coatings, combined lubrication systems, testing equipment, composites, solid lubricants and alloys developed for space applications.

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Two approaches for bio-lubricant production from soybean oil with organosilicon

Zhu

Chen

et al. 2023

Sustainable Chemistry and Pharmacy

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Lubricating Materials for Mechanisms Operating in Space

Cited by 11 publications

References 5 publications

Direct Fluorination as Method of Improvement of Operational Properties of Polymeric Materials

Direct Fluorination as Method of Improvement of Operational Properties of Polymeric Materials

The state of art on lubrication methods in space environment

Two approaches for bio-lubricant production from soybean oil with organosilicon

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