Self-lubricating plastics material for sealing elements

Details Self-lubricating plastics material for sealing elements Self-lubricating plastics material for sealing elements

C - Chemistry, Metallurgy

09

K

C09K 3/10 (2006.01) C08K 7/22 (2006.01) C08L 25/10 (2006.01) C08L 27/18 (2006.01) C08L 71/08 (2006.01) F04B 39/00 (2006.01) F04B 53/02 (2006.01)

Patent

CA 2470161

The present invention relates to a plastics material with self-lubricating action which is particularly suitable for the production of sealing elements for reciprocating compressors, said material comprising a wear-resistant polymer matrix, preferably made from polyketone, within which are dispersed microcapsules containing a lubricating fluid. The microcapsules incorporated into the polymer matrix break up as a result of friction with the contact surface of the sliding partner, resulting in the escape of the lubricating fluid and a consequent reduction in friction.

L'invention concerne une matière plastique dotée d'une action autolubrifiante et convenant particulièrement pour la production d'éléments d'étanchéité destinés à des compresseurs alternatifs. Ladite matière comprend une matrice polymère résistant à l'usure, de préférence à base de polycétone, au sein de laquelle sont dispersées des microcapsules contenant un fluide lubrifiant. Ces microcapsules, incorporées dans la matrice polymère, se brisent par suite du frottement avec la surface de contact de l'élément glissant associé, le fluide lubrifiant s'échappant alors entraînant une réduction du frottement.

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