Method for the production of a self-lubricating polymer...

C - Chemistry – Metallurgy – 10 – M

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C10M 177/00 (2006.01) B01J 13/02 (2006.01) C08G 65/46 (2006.01)

Patent

CA 2471654

The present invention relates to a method for producing a self-lubricating plastics material in which a polymer material is first cooled to cryogenic temperatures with liquid nitrogen to give rise to a crumbly, frozen polymer material which, once crushed, is mixed with microcapsules containing a lubricating fluid before then being compression moulded to yield a plastics material with lubricating microcapsules incorporated into the polymer matrix. The resultant self-lubricating plastics material is suitable for the production of sealing elements for reciprocating compressors.

La présente invention a trait à un procédé de production d'une matière plastique autolubrifiante, dans laquelle une matière polymère est tout d'abord refroidie à des températures cryogéniques avec de l'azote liquide pour produire une matière polymère friable et gelée, laquelle, une fois concassée, est mélangée avec des microcapsules contenant un fluide lubrifiant, avant d'être moulée par compression de façon à produire une matière plastique contenant des microcapsules lubrifiantes intégrées dans la matrice polymérique. La matière plastique autolubrifiante obtenue convient à la production d'éléments d'étanchéité pour compresseurs à piston.

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