Lubricating coating composition and compressor including the same

Patent metadata

Field	Value
Publication number	US-9944884-B2
Application number	US-201514753070-A
Country	US
Kind code	B2
Filing date	Jun 29, 2015
Priority date	Aug 29, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A lubricating coating composition and a compressor including a sliding member coated with the lubricating coating composition. The lubricating coating composition includes a thermosetting or thermoplastic polyimide-based resin as a binder, a solid lubricant, various solvents, and other additives at a controlled ratio. The compressor includes a first member including a first sliding surface and a second member moving relative to the first member including a second sliding surface. The lubricating coating composition is applied to the first sliding surface or the second sliding surface.

First claim

What is claimed is:

1. A lubricating coating composition for a surface of an iron based or an aluminum based swash plate, the lubricating coating composition comprising a polyimide-based resin, a solid lubricant, a filler, a silane coupling agent, and a solvent,
wherein based on a total weight of the composition the composition includes about 10 wt % to about 24 wt % of the polyimide-based resin, about 6 wt % to about 10 wt % of the solid lubricant, about 1 wt % to about 2.5 wt % of the filler, about 0.1 wt % to about 2.4 wt % of the coupling agent, and about 60 wt % to about 80 wt % of the solvent, wherein the polyimide-based resin is polyamide imide, the solid lubricant is polytetrafluoroethylene (PTFE), the filler is alumina (Al 2 O 3 ), the coupling agent is Pt(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane, the solvent comprises N-methyl-2-pyrrolidone (NMP), xylene, dimethylacetamide (DMAC), and methyl ethyl ketone (MEK), and the lubricating coating composition has a viscosity of about 30 cP to about 40 cP.

2. The lubricating coating composition of claim 1 , wherein the composition comprises the polyimide-based resin and the solid lubricant in a weight ratio of about 1.6:1 to about 3:1.

3. The lubricating coating composition of claim 1 , wherein the solid lubricant has an average particle diameter of about 0.1 to about 1 μm.

4. The lubricating coating composition of claim 1 , wherein the filler has an average particle diameter of about 0 to about 2 μm.

5. The lubricating coating composition of claim 1 , wherein the solvent comprises N-methyl-2-pyrrolidone (NMP) and dimethylacetamide (DMAC) in a weight ratio of about 2.5:1 to about 4:1.

Assignees

• Halla Visteon Climate Control
• Hanon Systems

Inventors

• Hwang Seung Yong
• Moon Joon Hee
• Son Eun Gi
• Joo Jae Wook
• Hur Jae Hyun
• Lee Kye Young

Classifications

• C10N2050/02

  dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C10N2040/30

  Refrigerators lubricants {or compressors lubricants} · CPC title

• C10M2201/061

  Carbides; Hydrides; Nitrides · CPC title

• C10M2201/062

  Oxides; Hydroxides; Carbonates or bicarbonates · CPC title