WO1996001288A2 - Procede d'amelioration de la resistance a l'erosion de composants de moteur - Google Patents

Procede d'amelioration de la resistance a l'erosion de composants de moteur Download PDF

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Publication number
WO1996001288A2
WO1996001288A2 PCT/US1995/008377 US9508377W WO9601288A2 WO 1996001288 A2 WO1996001288 A2 WO 1996001288A2 US 9508377 W US9508377 W US 9508377W WO 9601288 A2 WO9601288 A2 WO 9601288A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
fluoroelastomeric
organic matrix
applying
matrix material
Prior art date
Application number
PCT/US1995/008377
Other languages
English (en)
Other versions
WO1996001288A3 (fr
Inventor
Lisa A. Walla
Susan M. Meier
Jeffrey S. Leshane
Original Assignee
United Technologies Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by United Technologies Corporation filed Critical United Technologies Corporation
Priority to JP8503959A priority Critical patent/JPH10505552A/ja
Priority to EP95926168A priority patent/EP0797616A2/fr
Publication of WO1996001288A2 publication Critical patent/WO1996001288A2/fr
Publication of WO1996001288A3 publication Critical patent/WO1996001288A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/086—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of pure plastics material, e.g. foam layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0087—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/90—Coating; Surface treatment

Definitions

  • the present invention relates to structures having improved resistance to erosion from particulate matter and a method for forming such structures.
  • the present invention has particular utility in the manufacture of structures to be incorporated into jet engines, industrial turbines and the like. Jet engines are expected to operate under a wide variety of environmental conditions. Often, the components of the jet engines are exposed to particulate matter which impinge upon the components and cause them to deteriorate. For example, sand, debris and other particulate matter are ingested by jet engines as planes travel along taxiways and runways. Still further, jet engines encounter airborne sand, rain and particulate matter such as volcanic ash during the normal course of their airborne operations. Since the sand and other particulate matter are impinging against components of the jet engine while traveling at relatively high speeds, they often cause a great deal of erosion damage over time. Thus, efforts have been made to improve the erosion resistance of engine components.
  • the coating system of the present invention which comprises a highly durable fluoroelastomeric material coating applied to surfaces of engine components to be protected.
  • Engine components to which the coating system of the present invention may be applied include spinner caps, strut covers, engine fairings and airfoils.
  • these engine components are formed from an organic matrix material which is fiber reinforced such as an aramid, fiberglass or carbon fiber reinforced epoxy or bismaleimide (BMI) matrix material.
  • the fluoroelastomeric material coating is applied as an overlay with the fluoroelastomeric material being in a cured or uncured state.
  • engine components or structures are produced by: providing a component formed from an organic matrix material in an uncured state; applying a fluoroelastomeric material in a cured or uncured state to said component; and co-curing the component and said fluoroelastomeric material, preferably in a molding device and at a temperature at or above about 340°F. It has been discovered that by co-curing the component and the fluoroelastomeric material a very strong bond forms between the organic matrix material and the fluoroelastomeric material.
  • the method of the present invention provides a substantial cost savings since the erosion protection system is simultaneously incorporated into the component during molding, thus eliminating such post-molding steps as surface cleaning, preparation, and spray coating.
  • Figure 1 is a side view of an engine component provided with the coating system of the present invention
  • Figure 2 is a sectional view of the engine component of Figure 1 showing the manner in which the coating system of the present invention is applied to the engine component;
  • Figure 3 illustrates a sectional view of another engine component to which the coating system of the present invention may be applied
  • Figure 4 is an exploded view of a portion of the engine component of Figure 3; and Figure 5 is a graph illustrating the weight loss of various coating systems during an abrasion test. Best Mode for Carrying Out the Invention
  • Figure 1 illustrates an engine component 10 such as an airfoil to which the coating system of the present invention can be applied.
  • the engine component to be protected may be made from any suitable organic matrix material known in the art.
  • the matrix material may be fiber reinforced.
  • the material forming the component 10 can be an aramid, fiberglass or carbon fiber reinforced matrix material.
  • Suitable matrix materials include epoxy and bismaleimide matrix materials. It is preferred however that the material forming the component 10 be in an uncured state.
  • the component 10 has a leading edge 12 and upper and lower surfaces 14 and 16 which typically are impacted by particulate matter such as sand, debris, and ash during engine operation. Thus, it becomes highly desirable to impart erosion resistance to these portions of the component.
  • a layer 18 of fluoroelastomeric material is laid over or wrapped around a preform of the component 10.
  • the layer 18 covers those portions of the surfaces 14 and 16 and the leading edge 12 which typically encounter impingement by particulate matter.
  • the layer 18 comprises a thin sheet of fluoroelastomeric material which has been cut and trimmed to fit the component being protected.
  • the layer 18 will have a thickness of from about 0.005" to about 0.010"; however, this thickness may vary depending upon the expected erosion rate of the component. For components which are subjected to a relatively high angle of attack or high degree of sand, debris, rain, ash and other particulate matter impingement, the thickness of the layer 18 may be as high as 0.050".
  • the material forming the layer 18 is in a cured or uncured state.
  • a particularly suitable material which may be used for the layer 18 is a fluoroelastomeric material sold under the trademark EE 4515 by Eagle Elastomers.
  • Another material which may be used is VITON fluoroelastomeric material sold by duPont.
  • a compatible adhesive may be placed between the fluoroelastomeric material layer 18 and the portions of the component 10 being protected. However, for most applications, an intermediate adhesive layer is not necessary.
  • a suitable molding device such as an autoclave molding device, a compression molding device, a resin transfer molding device, and the like.
  • the particular molding device which is used depends upon the component being processed and the material forming that component.
  • heat, with or without pressure is applied to the component 10 and the surrounding fluoroelastomeric material for a time sufficient to effect co-curing or bonding of the two. It has been found that at temperatures at or above about 340°F, a strong bond will develop between the fluoroelastomeric material and the material forming the component 10. The bond is so strong that the fluoroelastomeric material can not be manually peeled from the surfaces of the component 10.
  • the manner in which the coating system of the present invention is applied to the engine component is advantageous from a number of standpoints.
  • post molding steps such as composite surface cleaning/preparation and spraying of a protective coating can be omitted. This eliminates a substantial amount of waste.
  • the coating system of the present invention is further advantageous in that it is environmentally friendly. That is, it does not include any spraying operation which involves the release of hazardous volatile material during application.
  • Figure 3 illustrates yet another application for the coating system of the present invention.
  • Figure 3 illustrates a spinner cap 20 for a jet engine.
  • the exterior surfaces of the spinner cap come into contact with particulate matter such as sand, debris, and ash and are therefore subject to a great deal of erosion.
  • a layer 18 of fluoroelastomeric material is applied to portions of the exterior surface of the spinner cap which encounter the most particulate matter.
  • the spinner cap 20 is formed from an epoxy resin material 19 having layers 22 and 24 of fiberglass and aramid or carbon reinforcement fibers.
  • a sheet of fluoroelastomeric material in a cured or uncured state is cut, cleaned, trimmed and placed over the preform for the spinner cap while the matrix resin material is in an uncured state.
  • the spinner cap preform with the fluoroelastomeric layer material is placed within a mold and heated to a temperature at or above about 340°F for a time sufficient to effect co- curing or bonding of the matrix resin material forming the spinning cap preform and the fluoroelastomeric material.
  • spinner caps with the coating system of the present invention exhibit superior erosion protection as compared with spinner caps having painted polyurethane erosion coatings.
  • Fiberglass/Kevlar epoxy laminate nose cap with a co-cured, 0.020" thick Viton (fluoroelastomeric material) coating (4) a Fiberglass/Kevlar epoxy laminate nose cap with a hard epoxy coating (a mineral filled epoxy coating); and (5) a Fiberglass/Kevlar epoxy laminate nose cap with a toughened epoxy material coating.
  • Each of the nose caps was mounted to a motor which was rotated at 1745 RPM.
  • a nozzle was set at a distance of 42 inches from the nose cap leading edge. Thereafter, the nozzle was moved to a distance of 84 inches.
  • the nozzle generated a spray pattern which matched the diameter of the cap.
  • Washed beach sand was sprayed through the nozzle at a constant pressure of 50 psi and a temperature of 70°F.
  • the impingement angle of the sand on the nose cap was 90°.
  • the test measurement intervals were thirty seconds, three minutes, 6 minutes and 12 minutes. The weight loss in grams of the coating was measured at each interval.
  • Figure 5 illustrates the weight loss vs. blasting time for each coating system. As can be seen from this figure, the VITON coating performance was far superior to the performance of the other coating systems.
  • the coating system of the present invention can be used on other engine components.
  • it could be used on fan exit strut covers, bifurcation doors and covers, liners, blades and vanes.
  • the coating system of the present invention could also be used in other environments. For example, it can be used to protect components used in industrial turbines and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un système de revêtement pour composants de moteur qui présente une résistance à l'érosion accrue, ainsi qu'un procédé de formation dudit système sur les composants du moteur. On forme le système de revêtement à l'aide d'un matériau fluoroélastomère qui est co-durci ou lié avec le matériau matriciel organique formant le composant du moteur. On applique le système de revêtement sur le composant du moteur en recouvrant une préforme du composant de moteur d'une fine pellicule du matériau fluoroélastomère à l'état durci ou non durci, en plaçant la préforme et le matériau fluoroélastomère dans un dispositif de moulage, et en portant la préforme du composant de moteur et le matériau élastomère à une température d'au moins environ 340 °F de manière à obtenir le co-durcissement et/ou la liaison.
PCT/US1995/008377 1994-07-01 1995-07-03 Procede d'amelioration de la resistance a l'erosion de composants de moteur WO1996001288A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8503959A JPH10505552A (ja) 1994-07-01 1995-07-03 エンジン部品の耐浸食特性改善方法
EP95926168A EP0797616A2 (fr) 1994-07-01 1995-07-03 Procede d'amelioration de la resistance a l'erosion de composants de moteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27007994A 1994-07-01 1994-07-01
US08/270,079 1994-07-01

Publications (2)

Publication Number Publication Date
WO1996001288A2 true WO1996001288A2 (fr) 1996-01-18
WO1996001288A3 WO1996001288A3 (fr) 1996-02-15

Family

ID=23029821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/008377 WO1996001288A2 (fr) 1994-07-01 1995-07-03 Procede d'amelioration de la resistance a l'erosion de composants de moteur

Country Status (3)

Country Link
EP (1) EP0797616A2 (fr)
JP (1) JPH10505552A (fr)
WO (1) WO1996001288A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117262A1 (fr) 2009-04-10 2010-10-14 Xemc Darwind B.V. Pale protégée d'éolienne, procédé pour la fabriquer et éolienne
NL1036968C2 (en) * 2009-05-19 2010-11-22 Darwind Holding B V A protected wind turbine blade, a method of manufacturing it and a wind turbine.
FR2973845A1 (fr) * 2011-04-08 2012-10-12 Snecma Carter de soufflante pourvu d'un equipement de protection anti-impact
WO2020078707A1 (fr) * 2018-10-17 2020-04-23 Rolls-Royce Plc Protection de composant
US11408371B1 (en) 2021-04-15 2022-08-09 Raytheon Technologies Corporation Fluoroelastomer erosion coating repair

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229589A (en) * 1975-08-29 1977-03-05 Fuji Electric Co Ltd Sequence control device
WO1982000606A1 (en) * 1980-08-18 1982-03-04 Hudson Inc D Novel fluoroelastomer film compositions containing silane compounds and method for the preparation thereof
JPS57200475A (en) * 1981-06-04 1982-12-08 Daikin Ind Ltd Sliding seal ring for vacuum equipment
EP0089162A1 (fr) * 1982-03-12 1983-09-21 Polysar Limited Assemblage d'élastomères
EP0106423A2 (fr) * 1982-09-13 1984-04-25 Dow Corning Corporation Caoutchouc en silicone revêtu d'un fluoroélastomère

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229589A (en) * 1975-08-29 1977-03-05 Fuji Electric Co Ltd Sequence control device
WO1982000606A1 (en) * 1980-08-18 1982-03-04 Hudson Inc D Novel fluoroelastomer film compositions containing silane compounds and method for the preparation thereof
JPS57200475A (en) * 1981-06-04 1982-12-08 Daikin Ind Ltd Sliding seal ring for vacuum equipment
EP0089162A1 (fr) * 1982-03-12 1983-09-21 Polysar Limited Assemblage d'élastomères
EP0106423A2 (fr) * 1982-09-13 1984-04-25 Dow Corning Corporation Caoutchouc en silicone revêtu d'un fluoroélastomère

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent Publications Ltd., London, GB; AN 83-08131K[04] & JP,A,57 200 475 (DAIKIN KOGYO KK) 4 June 1981 *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 682 (M-1528) 14 December 1993 & JP,A,52 029 589 (ASK:KK) 7 September 1993 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117262A1 (fr) 2009-04-10 2010-10-14 Xemc Darwind B.V. Pale protégée d'éolienne, procédé pour la fabriquer et éolienne
US8961142B2 (en) 2009-04-10 2015-02-24 Xemc Darwind B.V. Protected wind turbine blade, a method of manufacturing it and a wind turbine
NL1036968C2 (en) * 2009-05-19 2010-11-22 Darwind Holding B V A protected wind turbine blade, a method of manufacturing it and a wind turbine.
FR2973845A1 (fr) * 2011-04-08 2012-10-12 Snecma Carter de soufflante pourvu d'un equipement de protection anti-impact
WO2020078707A1 (fr) * 2018-10-17 2020-04-23 Rolls-Royce Plc Protection de composant
US11560798B2 (en) 2018-10-17 2023-01-24 Rolls-Royce Plc Component shielding
US11408371B1 (en) 2021-04-15 2022-08-09 Raytheon Technologies Corporation Fluoroelastomer erosion coating repair
US11739713B2 (en) 2021-04-15 2023-08-29 Raytheon Technologies Coporation Fluoroelastomer erosion coating repair

Also Published As

Publication number Publication date
WO1996001288A3 (fr) 1996-02-15
EP0797616A2 (fr) 1997-10-01
JPH10505552A (ja) 1998-06-02

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