US 12,173,250 B2
PTFE polymer-based sliding material having fillers which improve the tribological properties
Mario Witt, Heidelberg (DE); Rolf Reinicke, Bad Schoenborn (DE); and Riitta Taipalus, Limburgerhof (DE)
Assigned to KS GLEITLAGER GMBH, St. Leon-Rot (DE)
Appl. No. 16/604,670
Filed by KS Gleitlager GmbH, St. Leon-Rot (DE)
PCT Filed Apr. 12, 2018, PCT No. PCT/EP2018/059437
§ 371(c)(1), (2) Date Oct. 11, 2019,
PCT Pub. No. WO2018/189318, PCT Pub. Date Oct. 18, 2018.
Claims priority of application No. 10 2017 107 959.9 (DE), filed on Apr. 12, 2017.
Prior Publication US 2023/0257676 A1, Aug. 17, 2023
Int. Cl. C10M 169/04 (2006.01); B32B 15/18 (2006.01); C10M 107/38 (2006.01); C10M 125/22 (2006.01); C10M 125/24 (2006.01); F16C 33/20 (2006.01); B32B 5/16 (2006.01); B32B 15/16 (2006.01); C10N 10/14 (2006.01); C10N 10/16 (2006.01); C10N 40/02 (2006.01)
CPC C10M 169/04 (2013.01) [B32B 15/18 (2013.01); C10M 107/38 (2013.01); C10M 125/22 (2013.01); C10M 125/24 (2013.01); F16C 33/205 (2013.01); B32B 5/16 (2013.01); B32B 15/16 (2013.01); B32B 2260/02 (2013.01); B32B 2260/046 (2013.01); B32B 2264/105 (2013.01); B32B 2307/554 (2013.01); B32B 2307/744 (2013.01); C10M 2201/084 (2013.01); C10M 2201/085 (2013.01); C10M 2213/0623 (2013.01); C10N 2010/14 (2013.01); C10N 2010/16 (2013.01); C10N 2040/02 (2013.01); F16C 2208/32 (2013.01)] 18 Claims
OG exemplary drawing
 
1. Polytetrafluoroethylene (PTFE) polymer-based sliding material having fillers for improving tribological properties, characterised in that
the fillers comprise a primary filler having calcium phosphate and at least one metal sulphide;
the at least one metal sulphide is at least >2% by volume;
contents of the fillers by volume are determined by weight and density;
the at least one metal sulphide comprises Tin(IV) sulphide (SnS2), Bismuth (III) sulfide (Bi2S3), Tungsten disulfide (WS2), Zinc sulfide (ZnS), Copper (II) sulfide (CuS) or a combination thereof;
the PTFE polymer-based sliding material having a PTFE polymer-base that comprises at least 70% by volume of PTFE; and
the PTFE polymer-based sliding material comprises secondary fillers having solid lubricants with Barium sulfate (BaSO4).