EP0401335A1 - Self-lubricating materials - Google Patents
Self-lubricating materialsInfo
- Publication number
- EP0401335A1 EP0401335A1 EP19900900281 EP90900281A EP0401335A1 EP 0401335 A1 EP0401335 A1 EP 0401335A1 EP 19900900281 EP19900900281 EP 19900900281 EP 90900281 A EP90900281 A EP 90900281A EP 0401335 A1 EP0401335 A1 EP 0401335A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- lubricant
- base material
- microporous
- microporous carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
Definitions
- This invention relates to self-lubricating materials.
- a method of producing a self-lubricating material comprising absorbing a lubricant (such as oil or wax) into a microporous carrier, and incorporating the lubricant-bearing carrier into a base material.
- a lubricant such as oil or wax
- the resultant mixture is used to mould, cast or extrude a desired component directly in its finished form.
- a method of producing a self-lubricating article such as a bearing or gear, comprising absorbing a lubricant (such as oil or wax) into a microporous carrier, mixing the carrier with a base material such as metal or plastics, and moulding, casting or extruding the bearing or gear in its finished form directly from the resultant mixture.
- a lubricant such as oil or wax
- the microporous carrier has a structure comprising a plurality of substantially spherical microcells distributed substantially uniformly through the structure, adjacent cells being interconnected by pores smaller in diameter than the microcells.
- the microcells conveniently have an average diameter of between 0.5 and 100 microns.
- the microporous carrier is a substance as defined in the claims of UK Patent No. 1576228.
- the microporous carrier can be made of plastics material, and is preferably a polymer or copolymer of an ethylenically unsaturated monomer, a condensation polymer, a polyphenylene oxide or a blend thereof. More particularly, the plastics material can be polypropylene, polyethylene or a polyamide (e.g. nylon). Alternatively, the microporous carrier can be made of a metal or metal alloy, such as aluminium or aluminium alloy.
- the microporous carrier is made of the same material as the base material .
- the microporous carrier has a density within the approximate range of 0.9 to 0.945 gm/cc 3 , a void volume of substantially 75%, a cell size within the approximate range of 0.5 to 6.0 microns, and/or a pore size within the approximate range of 0.05 to 5.0 microns.
- the carrier incorporating the lubricant can be mixed with the base material in solid form, with the resultant mixture then being subjected to a melting operation.
- the carrier incorporating the lubricant can be incorporated into the base material when the latter is in a molten state.
- a lubricant such as oil or wax is absorbed into a microporous carrier. Particles of the lubricant-bearing carrier are then mixed with granules of a base material (such as plastics), for example using one part of carrier to ten parts of base material, and the resultant mixture is employed as a raw material for e.g. a moulding, casting or extrusion process.
- a base material such as plastics
- the lubricant is dispersed in minute pockets throughout the finished component. Accordingly, as the surface of the component wears, fresh pockets are exposed thereby maintaining the lubricating function in an effective manner.
- a suitable form of carrier for use in the above-described process is that described and claimed in UK patent no. 1576228 and sold by Azko Chemicals under the trade name ACCUREL. This substance is capable of absorbing approximately two-thirds of its own weight of the lubricant.
- microporous carriers can be used according to the nature of the base material, and carriers having the following properties are preferred, respectively, where the base material is a polyamide plastics (e.g. nylon), polyethylene or polypropylene:
- the base material is a polyamide plastics (e.g. nylon), polyethylene or polypropylene:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Lubricants (AREA)
Abstract
Matériau auto-lubrifiant, dans lequel un porteur microporeux regorgeant de la substance lubrifiante (telle que de l'huile ou de la cire) est incorporé dans un matériau de base. Le mélange ainsi obtenu peut servir à mouler, couler ou extruder directement dans sa forme finale un objet ou composant voulu, sans devoir recourir par exemple à la finition par machine pour lui donner une dimension donnée. Le porteur peut être fait de matières plastiques, de métal ou d'un alliage métallique, et est, de préférence, fait du même matériau que le matériau de base.Self-lubricating material, in which a microporous carrier filled with lubricating substance (such as oil or wax) is incorporated into a base material. The mixture thus obtained can be used to mold, cast or extrude directly into its final form a desired object or component, without having to resort, for example, to machine finishing to give it a given dimension. The carrier can be made of plastics, metal or a metal alloy, and is preferably made of the same material as the base material.
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8829095 | 1988-12-14 | ||
GB888829095A GB8829095D0 (en) | 1988-12-14 | 1988-12-14 | Application for self lubricated bearings |
GB898911557A GB8911557D0 (en) | 1989-05-19 | 1989-05-19 | Self-lubricating materials |
GB8911557 | 1989-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0401335A1 true EP0401335A1 (en) | 1990-12-12 |
Family
ID=26294724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900900281 Withdrawn EP0401335A1 (en) | 1988-12-14 | 1989-12-11 | Self-lubricating materials |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0401335A1 (en) |
JP (1) | JPH03502470A (en) |
WO (1) | WO1990006967A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992013205A1 (en) * | 1991-01-28 | 1992-08-06 | W.L. Gore & Associates, Inc. | A bushing liner |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2274911A1 (en) * | 1974-06-13 | 1976-01-09 | Metafram | PROCEDURE FOR VERIFYING THE QUALITIES OF A PRODUCT AND SELF-LUBRICATING SUPPORT UNIT CONSTITUTED OF THIS PRODUCT |
DE3030870A1 (en) * | 1979-08-29 | 1981-03-26 | Bando Chemical Industries Ltd., Kobe, Hyogo | SELF LUBRICATING BEARING |
-
1989
- 1989-12-11 JP JP50111989A patent/JPH03502470A/en active Pending
- 1989-12-11 EP EP19900900281 patent/EP0401335A1/en not_active Withdrawn
- 1989-12-11 WO PCT/GB1989/001474 patent/WO1990006967A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9006967A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH03502470A (en) | 1991-06-06 |
WO1990006967A1 (en) | 1990-06-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900817 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19910919 |