GB2407322A - Composite bearing material - Google Patents

Composite bearing material Download PDF

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Publication number
GB2407322A
GB2407322A GB0324779A GB0324779A GB2407322A GB 2407322 A GB2407322 A GB 2407322A GB 0324779 A GB0324779 A GB 0324779A GB 0324779 A GB0324779 A GB 0324779A GB 2407322 A GB2407322 A GB 2407322A
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United Kingdom
Prior art keywords
composite bearing
composite
bearing material
thennosetting
polymeric matrix
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GB0324779A
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GB2407322B (en
GB0324779D0 (en
Inventor
Alexander Richard Willi Barron
Graeme Malcolm Ian Seal
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Railko Ltd
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Railko Ltd
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Priority to GB0324779A priority Critical patent/GB2407322B/en
Publication of GB0324779D0 publication Critical patent/GB0324779D0/en
Publication of GB2407322A publication Critical patent/GB2407322A/en
Application granted granted Critical
Publication of GB2407322B publication Critical patent/GB2407322B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/06—Unsaturated polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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
    • C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/06—Unsaturated polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/10—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18—Homopolymers or copolymers of nitriles
    • C08L33/20—Homopolymers or copolymers of acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A composite bearing material that is suitable for use in an injection moulding process comprises a thermosetting polymeric matrix and a reinforcing material. The thermosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material.

Description

COMPOSlTF, BEARING MATERIAL The present invention relates to a composite
bearing material comprising a polymeric resin and a fibre reinforcement, which is suitable for use in an injection moulding process. The invention also relates to a bearing components and a method of making bearing components. In another aspect, the invention relates to a composite material for non- bearing applications.
By the term "bearing material" we mean a material that is suitable for use in bearings, which is capable of transmitting a load across a movable joint. Important characteristics of such materials are that they should be strong and rigid, and should not wear rapidly.
Generally, it is preferable that they should have a relatively low coefficient of Fiction (although this will depend on the application). In some bearing materials, the coefficient of friction may be modified by use of a lubricant.
Composite bearing materials comprising a polymeric resin and fibre reinforcement have been available for many years. Traditional products based on phenolic resin and asbestos fibre are no longer manufactured and new products have been developed. These new products have however tended to follow existing processes, owing to the requirement for machine utilization.
In the late 1 970's a new product was developed by Railko Limited, in which the base resin system is polyester (a thennosetting resin, using styrene as the cross-linking monomer) and nylon felt is used as the reinforcement. The technology is based on glass reinforced plastic (GRP) methodology, the resin being impregnated into the nylon felt under compression to produce an impregnated sheet material (known as "pre-preg") . This sheet material can be moulded by compression moulding into sheet, rod, tube and other simple shapes.
Components can then be produced from these shapes by machining.
The process described above is relatively complex and can be wasteful of materials, particularly if extensive machining is necessary. The resulting products therefore tend to be relatively expensive, particularly where these are small, simple components, that are required in large numbers (for example, bushes).
A more cost effective process for producing large numbers of products is by injection moulding. Such products do not require machining and they can be produced with very little waste and/or can cause excessive wear.
Various thennosetting materials are suitable for injection moulding, including phenolics, polyesters and epoxides. Where reinforcement is required, this has tended to be of cotton or glass fibres. However, such materials have not been used extensively in bearings, mainly because they tend to have a relatively high coefficient of friction and also, in the case of glass fibres, because they can cause high wear.
It is an object of the present invention to provide a composite bearing material that is suitable for injection moulding, and which overcomes at least some of the disadvantages associated with previous materials.
According to the present invention there is provided a composite bearing material that is suitable for use in an injection moulding process, the material comprising a thermosetting polymeric matrix and a reinforcing material, wherein the thennosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material.
A composite bearing material according to the invention provides useful bearing properties, including high strength and rigidity, low wear. It can be used either with or without a lubricant and has a relatively low coefficient of friction, both with and without lubrication.
Because the material is suitable for injection moulding, bearing components can be mass produced very quickly and cheaply, with minimal or no post-moulding production processes and very little material waste. By avoiding the use of glass fibres, wear in the counter-face components is minimised.
Advantageously, the thennosetting polymeric matrix comprises 40-95% by weight of the composite material.
Advantageously, the resin comprises 25-90%, preferably 30-40%, by weight ofthe matrix.
Advantageously, the thennosetting polymeric matrix includes polyester resin and a monomer. I he monomer may comprise 4-45%, and preferably 6-1 to, by weight of the matrix. Preferably, the monomer includes diallyl phthalate (DAP).
The thermosetting polymeric matrix may include a friction modifier, to further reduce the coefficecnt of friction. Advantageously, the friction modifier comprises 1-40%, and preferably 3-15%, by weight of the matrix. The friction modifier is preferably selected from a range consisting of polytctrafluoroethylene (I,TFE), graphite and molybdenum disulphide.
T he thennosetting polymeric matrix may include a filler (i.e. an extender). his reduces proportion of resin in the matrix and therefore the cost of the material. Advantageously, the filler comprises 1-60%, and preferably 30-50%, by weight of the matrix. Preferably, the filler includes a carbonaceous mineral or clay, for example Dolomite.
Advantageously, the synthetic polymeric fibre material comprises 5-60% by weight of the composite material.
Advantageously, the synthetic polymeric fibre material is selected from a range that includes polyester fibres, polyamide fibres, aramid fibres and polyacrylonitrile fibres, and combinations thereof. Other fibrcs may also be used, including viscose and polybenzoxazole (PRO).
According to another aspect ofthe invention there is provided a bearing including a bearing component made of a composite bearing material as defiecd by any one of the preceding
statements of invention.
Advantageously, the bearing component is fonned by injection moulding.
According to another aspect of the invention there is provided a method of making a bearing component, the method including forming the component by injection moulding using a composite bearing material as defined by any one of the preceding statements of invention.
According to another aspect ofthe invention there is provided a composite bearing material comprising a thcnnosetting polymeric matrix and a reinforcing material, wherein the thennosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material. The bearing material may be moulded by any suitable process, for example compression moulding.
According to another aspect of the invention there is provided a composite material that is suitable for use in an injection moulding process, the material comprising a thermosetting polymeric matrix and a reinforcing material, wherein the thermosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material. The composite material may be used in various non-bearing applications.
Advantageously, composite material includes the product features defined by one or more
of the preceding statements of invention.
Various embodiments of the invention will now be described by way of the following
1 () examples.
Example I
A composite material having polyamide fibres as the reinforcing material and a polyester- based resin matrix with molybdenum disulphide as the friction modifier was made up according to the following composition: Component Substance Supplier Trade name TO Polymer Polyester resin Scott Bader Crystic Impreg 30 _ _ _. 772N Monomer DAP Laporte Bisomer Dalp 9.5 __. . _ _ __ _ Friction modifier Molybdenum Acheson Molydag 626 5 disulphide
_ _ _
Filler/extender Dolomite Croxton & Garry Microdol 40 Catalyst Dicumyl Akzo Nobel Perkadox BC- 0.5 _ _ peroxide 40B-pd Fibre Polyamide 6,6 15 reinforcement 3 denier _ A thennosetting polymeric matrix material was made first by combining and mixing together the first five components. The polyamide fibres were then opened by being worked mechanically, and the polymeric matrix material was then added to the fibres by spraying. This mixture was then mixed thoroughly in a compounding extruder to produce a composite material in which the fibres were substantially evenly distributed.
The composite material produced by this process is suitable for use in a thennosetting injection moulding process. It is therefore possible to produce bearing components in a substantially finished form by injecting the material into a heated mould, allowing the material to cure, and then ejecting the moulded components from the mould. Very little or no finishing processes are required and the manufacturing process is therefore very fast and el'ficient, and very little waste material is produced. We have found that the material has a coefficient of friction (without lubrication) of approximately 0.2 to 0.3, which compares very favourably with many existing bearing materials (both with and without lubrication).
Example 2
A composite material having polyester fibres as the reinforcing material and a polyester- based resin matrix with graphite as the t'riction modifier was made up according to the following composition:
_ __
Component Substance Supplicr Trade name % _ _. _ _ Polymer Polyester resin Scott Bader Crystic Impreg 30 772N
__
Monomer DA P Laporte Bisomer Dall? 9. 5 Friction modifier Graphite Lonza KS 15 5 liller/extender Dolomite Croxton & Garry Microdol 35 Catalyst Dicumyl Akzo Nobel Perkadox BC- ().5 peroxide 40B-pd
_ _ __
Fibre Polyester fibre 20 reinforcement 3 denier This composite material was made up using the same process as that described above in Example 1. Various bearing products were then made from the material by injection moulding. Products made of the material were found to have a coefficient of friction (without lubrication) of approximately 0.2 to 0.3.
Example 3
A composite material having a mixture of aramid and polyacrylonitrile fibres as the reinforcing material and a polyester-based resin matrix with P'l'FE as the friction modifier was made up according to the following composition: Component Substance Supplier Trade name % Polymer Polyester resin Scott Bader Crystic Impreg 3() _ _ 772N Monomer DAP Laporte Bisomer Dalp 9.5 Friction modifier PTFE Fluoroglide FL1690 5 Filler/extender Dolomite C.roxton & Garry Microdol 35 Catalyst Dicumyl Akzo Nobel Perkadox BC- 0.5 peroxide 40B-pd Fibre Aramid fibre Kevlar 15 reinforcement.
Polyacrylontrle _ _ _ Dralon 5 This composite material was made up using the same process as that described above in I () Example 1. The material is also suitable for injection moulding and products made Tom the material have been found to have a coef'ficicnt of friction (without lubrication) of approximately 0.2 to 0.3.
Various modifications ofthe invention are possible. For example, it may be possible to use other monomers such as styrene or methyl methacrylate. Other reinforcing fibres may also be used, such as acrylic fihres. The material may also be moulded by other moulding processes, such as compression moulding. Further, although the material is intended primarily f'or use in bearings, it may also have other useful applications.

Claims (18)

1. A composite bearing material that is suitable for use in an injection moulding process, the material comprising a thennosetting polymeric matrix and a reinforcing material, wherein the thennosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material.
2. A composite bearing material according to claim 1, wherein the thennosetting polymeric matrix comprises 40-95% by weight of the composite material.
3. A composite bearing material according to claim I or claim 2, wherein the resin comprises 25-90%, preferably 30-40%, by weight of the matrix.
4. A composite bearing material according to any one of the preceding claims, wherein the thennosetting polymeric matrix includes polyester resin and a monomer.
5. A composite bearing material according to claim 4, wherein the monomer comprises 4-45%, preferably 6-15%, by weight of the matrix.
6. A composite bearing material according to claim 5, wherein the monomer includes diallyl phthalate.
7. A composite bearing material according to any one of the preceding claims, wherein the thennosetting polymeric matrix includes a friction modifier.
8. A composite bearing material according to claim 7, wherein the friction modifier comprises 1-40%, preferably 3-15%, by weight of the matrix.
9. A composite bearing material according to claim 7 or claim 8, wherein the friction modifier is selected from a range consisting of PTFE, graphite and molybdenum disulphide.
10. A composite bearing material according to any one of the preceding claims, wherein the themosetting polymeric matrix includes a filler.
A composite bearing material according to claim 10, wherein the filler comprises 1-60Xo, preferably 3()-50%, by weight ol'the matrix.
12. A composite bearing material according to claim 10 or claim I 1, wherein the filler includes a carbonaceous mineral or clay.
13. A composite bearing material according to any one of the preceding claims, wherein the synthetic polymeric fibre material comprises 5-60% by weight of the composite material.
14. A composite bearing material according to any one of the preceding claims, wherein the synthetic polymeric fibre material is selected from a range that includes polyester fibres, polyamide fibres, aramid fibres and polyacrylonitrile fibres, and combinations thereof.
15. A bearing including a bearing component made of a composite bearing material as defined by any one of the preceding claims.
16. A bearing according to claim 15, wherein the bearing component is formed by injection moulding.
17. A method of making a bearing component, the method including Conning the component by injection moulding using a composite bearing material as defined by any one ofclaims 1 to 14.
18. A composite bearing material comprising a thennosettmg polymeric matrix and a reinforcing material, wherein the thennosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material.
] 9. A composite material that is suitable for use in an injection moulding process, the material comprising a thennosetting polymeric matrix and a reinforcing material, wherein the thennosetting polymeric matrix includes polyester or epoxy resin and the reinforcing material includes a synthetic polymeric fibre material.
GB0324779A 2003-10-23 2003-10-23 Composite bearing material Expired - Fee Related GB2407322B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100316315A1 (en) * 2008-02-22 2010-12-16 Ntn Corporation Member for rolling bearing and rolling bearing
CN103497462A (en) * 2013-10-12 2014-01-08 天津市天塑科技集团有限公司技术中心 Lubricating wear-resistant vertical line dedicated Venturi inner tube
US10307991B2 (en) 2013-09-30 2019-06-04 Saint-Gobain Performance Plastics Pampus Gmbh Laminates with fluoropolymer cloth

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689929A (en) * 1979-12-24 1981-07-21 Hitachi Chem Co Ltd Resin injection molding method
GB2092684A (en) * 1981-02-11 1982-08-18 Valeo Clutch release bearing
EP0232503A2 (en) * 1985-12-23 1987-08-19 Allied Corporation Reinforcement thermoset composites
JPH0578687A (en) * 1991-09-17 1993-03-30 Sutaaraito Kogyo Kk Composition for sliding member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689929A (en) * 1979-12-24 1981-07-21 Hitachi Chem Co Ltd Resin injection molding method
GB2092684A (en) * 1981-02-11 1982-08-18 Valeo Clutch release bearing
EP0232503A2 (en) * 1985-12-23 1987-08-19 Allied Corporation Reinforcement thermoset composites
JPH0578687A (en) * 1991-09-17 1993-03-30 Sutaaraito Kogyo Kk Composition for sliding member

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WPI Abstract AN 1981-68575D [38] & JP 56089929 A (HITACHI), see Abstract. *
WPI Abstract AN 1993-140538 [17] & JP 05078687 A (STARLITE), see Abstract. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100316315A1 (en) * 2008-02-22 2010-12-16 Ntn Corporation Member for rolling bearing and rolling bearing
US8821024B2 (en) * 2008-02-22 2014-09-02 Ntn Corporation Member for rolling bearing and rolling bearing
US10307991B2 (en) 2013-09-30 2019-06-04 Saint-Gobain Performance Plastics Pampus Gmbh Laminates with fluoropolymer cloth
CN103497462A (en) * 2013-10-12 2014-01-08 天津市天塑科技集团有限公司技术中心 Lubricating wear-resistant vertical line dedicated Venturi inner tube

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GB2407322B (en) 2007-07-25
GB0324779D0 (en) 2003-11-26

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