Slide bearing comprising a primer system as adhesion promoter

• US 10,113,588 B2
• Filed: 04/22/2016
• Issued: 10/30/2018
• Est. Priority Date: 06/29/2012
• Status: Active Grant

• Current Assignee: Saint-Gobain Performance Plastics Pampus GmbH (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint-Gobain Performance Plastics Pampus GmbH (Compagnie de Saint-Gobain SA)
• Inventors: Schmitjes, Olaf
• Primary Examiner(s): Oladapo, Taiwo
• Application Number:
  US15/136,207
• Publication Number:
  US 20160238072A1
• Time in Patent Office: 921 Days
• CPC Class Codes: B05D 7/14 to metal, e.g. car bodies involving a chemical reaction between the metal and the coating C23
• CPC Class Codes: B05D 7/584 at least some layers being let to dry, at least partially, before applying the next layer B05D7/587 takes precedence
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: C09D 5/002 Priming paints C09D5/08 takes precedence
• CPC Class Codes: C09J 123/0892 containing monomers with other atoms than carbon, hydrogen or oxygen atoms
• CPC Class Codes: C09J 127/18 Homopolymers or copolymers of tetrafluoroethene
• CPC Class Codes: C09J 2400/163 in the substrate
• CPC Class Codes: C09J 2427/00 Presence of halogenated polymer
• CPC Class Codes: C09J 7/28 Metal sheet metallised plastics C09J7/22
• CPC Class Codes: F16C 2204/60 Ferrous alloys, e.g. steel alloys
• CPC Class Codes: F16C 2206/00 Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
• CPC Class Codes: F16C 2208/00 Plastics; Synthetic resins, e.g. rubbers
• CPC Class Codes: F16C 2208/02 comprising fillers, fibres
• CPC Class Codes: F16C 2208/30 Fluoropolymers F16C2208/58 takes precedence
• CPC Class Codes: F16C 2208/32 Polytetrafluorethylene [PTFE] F16C2208/58 takes precedence
• CPC Class Codes: F16C 2208/58 Several materials as provided for in F16C2208/30 - F16C2208/54 mentioned as option
• CPC Class Codes: F16C 2223/30 Coating surfaces in general B05C, C23C
• CPC Class Codes: F16C 2226/40 with adhesive
• CPC Class Codes: F16C 2240/40 Linear dimensions, e.g. length, radius, thickness, gap
• CPC Class Codes: F16C 2240/60 Thickness, e.g. thickness of coatings
• CPC Class Codes: F16C 2240/94 : Volume
• CPC Class Codes: F16C 2300/02 : General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
• CPC Class Codes: F16C 33/04 : Brasses; Bushes; Linings
• CPC Class Codes: F16C 33/201 : Composition of the plastic
• CPC Class Codes: F16C 33/206 : with three layers
• CPC Class Codes: F16C 33/208 : Methods of manufacture, e.g. shaping, applying coatings
• CPC Class Codes: Y10T 156/10 : Methods of surface bonding and/or assembly therefor

Abstract

A slide bearing can include a metal support, a primer layer, an adhesive layer applied directly thereto, and a sliding layer applied to the adhesive layer. The primer layer can include an oligomeric condensate of at least one silanol selected from the group having the formula:

• • wherein x is 1 or 2, y is 0 or 1.
    The moieties R¹ and R² can be the same or different. The moieties R¹ and R² can be selected from the group consisting of methyl, ethyl, n-propyl, i-propyl, and a functionalized alkyl group R′—(CH₂)_z—, wherein z is at least 1. Slide bearings comprising a primer system based on silanol oligomeric condensates show improved peel strength than their analogous slide bearings lacking the primer system.

Claims

1. A slide bearing comprising,

a metal support;

a primer layer, wherein the primer layer consists of at least one silanol, an oligomeric condensate of at least one silanol, or combination thereof, wherein the at least one silanol is selected from the group having the formula

2. The slide bearing according to claim 1, wherein R′

is selected from the group consisting of vinyl, difluorovinyl, trifluoromethyl, pentafluoroethyl, methoxy, ethoxy, trifluoromethoxy, pentafluoroethoxy, dimethyl amino, diethlyamino, di(trifluoromethyl)amino, and di(pentafluoroethyl)amino.

3. The slide bearing according to claim 1, wherein two silanols are selected in a weight ratio of at least about 1:

1.

4. The slide bearing according to claim 1, wherein the primer layer has a thickness of at least about 0.2 microns.

5. The slide bearing according to claim 4, wherein the thickness is not greater than about 5 microns.

6. The slide bearing according to claim 1, wherein the primer layer and the adhesive layer have a combined thickness of at least about 2 microns.

7. The slide bearing according to claim 1, wherein the primer layer and the adhesive layer have a combined bonding strength after T-peel force according to DIN EN 1895 of at least about 100 N/cm.

8. The slide bearing to claim 1, wherein the primer layer, the adhesive layer and the sliding layer have a combined bonding strength after T-peel force according to DIN EN 1895 of at least about 70 N/cm.

9. The slide bearing according to claim 1, wherein the sliding layer comprises polytetrafluoroethylene, polyamide, polyimide, polyether ether ketone, or a mixture thereof.

10. The slide bearing according to claim 1, wherein the sliding layer comprises at least one filler.

11. The slide bearing according to claim 10, wherein the at least one filler comprises fiber, glass fiber, carbon fiber, aramid, inorganic material, ceramic material, carbon, glass, graphite, aluminum oxide, molybdenum sulfide, tungsten disulfide, bronze, silicon carbide, woven fabric, powder, sphere, thermoplastic material, polyimide (PI), polyamidimide (PAI), polyphenylene sulfide (PPS), polyphenylene sulfone (PPSO2), liquid crystal polymer (LCP), polyether ether ketone (PEEK), aromatic polyester (Ekonol), mineral material, wollastonite, barium sulfate, or any combination thereof.

12. The slide bearing according to claim 1, wherein the metal support comprises steel, cold-rolled steel, material No. 1.0338 or 1.0347, matt zinc-plated steel, stainless steel, material No. 1.4512 or 1.4720, aluminum, bronze, alloys, or any combination thereof.