Thermoplastic composition with improved wear properties

Details Thermoplastic composition with improved wear properties Thermoplastic composition with improved wear properties

C - Chemistry, Metallurgy

08

K

C08K 13/02 (2006.01) C08K 3/26 (2006.01) C08K 5/103 (2006.01) C08L 59/00 (2006.01) C08L 101/00 (2006.01) C08L 23/00 (2006.01)

Patent

CA 2226388

A self-lubricating polymeric composition, characterized as a melt blend of a thermoplastic polymer and a lubricating system containing ultra high molecular weight polyethylenes, a polyester, acid metal salts, calcium salts, antioxidants and stabilizers. The composition may be prepared into shaped articles which exhibit improved surface wear resistance and coefficients of friction.

L'invention porte sur une composition polymère auto-lubrifiante ayant pour caractéristique d'être constituée d'un mélange fondu d'un polymère thermoplastique et d'un système lubrifiant contenant des polyéthylènes de poids moléculaire extrêmement élevé, un polyester, des sels acides de métal, des sels de calcium, des antioxydants et des agents de stabilisation. La composition peut se présenter, une fois élaborée, sous l'aspect d'articles façonnés, témoignant de propriétés améliorées en matière de résistance à l'usure en surface et dotés de coefficients de frottement accrus.

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