US 11,702,612 B2
Ultra-low friction materials for lubricating surfaces, devices therewith, and methods of manufacture and use thereof
H. Thomas Chung, Powell, TN (US); Fei Fan, Knoxville, TN (US); Sung Ki Cho, Knoxville, TN (US); Sam Lukubira, Knoxville, TN (US); Caleb Michael Spradling, Knoxville, TN (US); and Arturo Valencia, Knoxville, TN (US)
Assigned to Dura-Line LLC, Knoxville, TN (US)
Filed by Dura-Line LLC, Knoxville, TN (US)
Filed on Apr. 5, 2021, as Appl. No. 17/222,245.
Claims priority of provisional application 63/005,948, filed on Apr. 6, 2020.
Prior Publication US 2021/0309931 A1, Oct. 7, 2021
Int. Cl. C10M 169/04 (2006.01); C10M 103/02 (2006.01); C10M 107/38 (2006.01); C10M 107/50 (2006.01); C10M 111/04 (2006.01); C10M 143/02 (2006.01); C10M 147/02 (2006.01); C10M 157/02 (2006.01); A47C 27/00 (2006.01); A47C 31/00 (2006.01); C10N 40/32 (2006.01); C10N 50/08 (2006.01); A47C 27/04 (2006.01); A47C 27/20 (2006.01)
CPC C10M 169/041 (2013.01) [A47C 27/002 (2013.01); A47C 31/001 (2013.01); C10M 103/02 (2013.01); C10M 107/38 (2013.01); C10M 107/50 (2013.01); C10M 111/04 (2013.01); C10M 143/02 (2013.01); C10M 147/02 (2013.01); C10M 157/02 (2013.01); A47C 27/001 (2013.01); A47C 27/04 (2013.01); A47C 27/20 (2013.01); C10M 2201/0413 (2013.01); C10M 2205/022 (2013.01); C10M 2213/02 (2013.01); C10M 2213/0623 (2013.01); C10M 2229/025 (2013.01); C10N 2040/32 (2013.01); C10N 2050/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device comprising:
an object including a surface, wherein the surface includes a polymeric material mixture, wherein the polymeric material mixture includes (a) a fluorine-containing polymer or a graphene, (b) a siloxane polymer, (c) a first polymer processing additive, and (d) a second polymer processing additive, wherein the siloxane polymer is a ultra-high molecular weight siloxane polymer having a viscosity of about 1 million mm2/s to about 100 million mm2/s, wherein the first polymer processing additive is chemically different from the second polymer processing additive, wherein the first polymer processing additive includes a fluoropolymer-based material having a molecular weight of about 1,000,000 to about 5,000,000, wherein the second polymer processing additive is a polyethylene-based material having a molecular weight of about 2,000,000 to about 3,000,000, wherein the first polymer processing additive has a first amount of about 10.0% to about 15.0% (w/w) based on a total weight of the polymeric material mixture and the second polymer processing additive has a second amount of about 10.0% to about 20.0% (w/w) based on the total weight of the polymeric material mixture, wherein the fluorine-containing polymer includes polytetrafluoroethylene (PTFE), wherein an amount of the fluorine-containing polymer is about 10% to about 20% (w/w) based on the total weight of the polymeric material mixture, wherein a particle size distribution of the PTFE has a D50 of about 10 μm to about 50 μm and a D90 of about 100 μm to about 260 μm, wherein D50 is a median value of particle size diameters in the particle size distribution and D90 is a particle size value at which 90% of the particle size distribution has a smaller size particle diameter, wherein an amount of the ultra-high weight siloxane polymer is about 20% to about 40% (w/w) based on the total weight of the polymeric material mixture.