Lubricating coating composition and compressor including the same

Patent metadata

Field	Value
Publication number	US-2018201869-A1
Application number	US-201815919304-A
Country	US
Kind code	A1
Filing date	Mar 13, 2018
Priority date	Aug 29, 2014
Publication date	Jul 19, 2018
Grant date	—

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 compressor comprising:
a first sliding surface of a first member; a second sliding surface of a second member, the first sliding surface and the second sliding surface move relative to each other; and a lubricating coating composition coated on any one of the first sliding surface and the second sliding surface to form a lubricating layer, wherein the lubricating coating composition further comprises:
a polyimide-based resin;
a solid lubricant;
a filler;
a silane coupling agent; and
a solvent, wherein based on a total weight of the lubricating coating composition, 10-24 wt % of the polyimide-based resin, 6-10 wt % of the solid lubricant, 1-2.5 wt % of the filler, 0.1-2.4 wt % of the silane coupling agent, and 60-80 wt % of the solvent, wherein the polyimide-based resin is polyamide imide, wherein the solid lubricant is polytetrafluoroethylene (PTFE), wherein the filler is alumina (Al 2 O 3 ), and wherein the solvent is consisting of N-methyl-2-pyrrolidone (NMP), xylene, dimethylacetamide (DMAC), and methyl ethyl ketone (MEK), wherein the lubricating coating composition has a viscosity of 30-40 cP.

2 . The compressor of claim 1 , wherein the polyimide-based resin and the solid lubricant are present at a weight ratio of 1.6:1 to 3:1.

3 . The compressor of claim 1 , wherein the polytetrafluoroethylene (PTFE) has an average particle diameter of 0.1-1 μm.

4 . The compressor of claim 1 , wherein the filler has an average particle diameter of more than 0 and 2 μm or less.

5 . The compressor of claim 1 , wherein the silane coupling agent is selected from a group consisting of aminophenyltrimethoxysilane (C 9 H 15 NO 3 Si), N-(2-aminoethyl)-3-aminopropyl trimethoxysilane (C 8 H 22 N 2 O 3 Si), bis(triethoxypropyl)amine (C 18 H 43 NO 6 Si 2 ), (chloromethyl)phenylethyl trimethoxysilane (C 12 H 19 ClO 3 Si), and Pt(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane.

6 . The compressor of claim 1 , wherein the solvent comprises N-methyl-2-pyrrolidone (NMP) and dimethylacetamide (DMAC) at a weight ratio of 2.5:1 to 4:1.

Assignees

• 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

• C10N2040/30

  Refrigerators lubricants {or compressors lubricants} · CPC title

• C10N2030/06

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

• C10M2201/061

  Carbides; Hydrides; Nitrides · CPC title

• B05D5/083

  involving the use of fluoropolymers · CPC title