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US20050130565A1 - Method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts - Google Patents

Method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts Download PDF

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Publication number
US20050130565A1
US20050130565A1 US10/508,290 US50829004A US2005130565A1 US 20050130565 A1 US20050130565 A1 US 20050130565A1 US 50829004 A US50829004 A US 50829004A US 2005130565 A1 US2005130565 A1 US 2005130565A1
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United States
Prior art keywords
further processing
structural parts
supporting structural
recited
plastic surfaces
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.)
Abandoned
Application number
US10/508,290
Inventor
Jorn Oellerich
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Individual
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Individual
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Publication of US20050130565A1 publication Critical patent/US20050130565A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber

Definitions

  • the invention relates to a method for preparing plastic surfaces, preferably surfaces of carbon fiber reinforced plastics, for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, by means of abrasive removal of the surface.
  • Such prepared surfaces are needed in modern aircraft construction in order to be able to build even lighter structures, by means of processing carbon fiber reinforced plastics.
  • the bond surfaces of the upper and lower shell of supporting surfaces must be pretreated carefully, before they are bonded together to produce the finished wing.
  • frames and stringers must also be laminated in between the shells.
  • a water-break test is performed, which takes advantage of the difference in surface tension of ground and contaminated surfaces, in order to be able to make a statement about the quality of the result of grinding.
  • the bond surface is completely wetted using de-ionized water. Subsequently, the surface is set vertically, so that the water can flow off. In the case of a well-cleaned surface, the water flows off evenly. Water beads form at dirty points. Such points must be additionally ground.
  • the parts must first be dried in an oven, in order to remove the water, i.e. any residual moisture.
  • This task is accomplished, in the case of a method of this type, in that the material removal takes place by means of an abrasive sandblasting agent that is distributed in a gaseous fluid. If the time that is required in order to remove the surface, usually down to the fiber, i.e. to destroy it, is measured, about one-tenth of this time is surprisingly sufficient to achieve a treatment of the surface that is sufficient for the bond. The quality of this surface actually surpasses that of a ground surface. In fracture tests, the components fail not at the bond point, but rather in the basic material, and this significantly increases the ability of the bonded structural parts to withstand stress.
  • Contamination of the mechanically cleaned surface with the fluid is advantageously avoided in that the gaseous fluid is dried air from which oil has been removed.
  • Particularly durable bonds are achieved if a sharp-edged corundum grain, preferably in a grain size range between 0 and 90 ⁇ m, particularly between 17 and 62 ⁇ m, is used as the sandblasting agent.
  • sandblasting agent is applied to the surface to be treated by means of a low-pressure jet, preferably from a pressure boiler at less than 2.5 bar.
  • the same purpose is served by the measure of applying the sandblasting agent to the surface to be treated by means of an eddy jet nozzle.
  • the rotating jet of the eddy jet nozzle prevents the formation of disadvantageous so-called hot spots.
  • An optical inspection of the work result is advantageously sufficient, in order to assure sufficient quality of the surface.
  • the treatment with the sandblasting agent takes place as long as necessary in order to achieve an almost cloud-free, matt, treated surface.
  • This quality is advantageously defined analogous to DIN EN ISO 12944-4 SA 2.5, by way of the work result. Complicated water-break tests with drying steps in large, complicated ovens can therefore be eliminated.
  • the treated surface is blown off with dried and oil-free air, in order to remove the sandblasting agent. Any remaining individual grains of the sandblasting agent that might have penetrated deeper into the surface surprisingly do not have a disadvantageous effect.
  • a quality inspection of the treated surface takes place by means of measuring a surface resistance and/or by means of an optical inspection using a comparison sample.
  • the reproducibility of the work result is additionally improved if the treatment takes place in an air-conditioned, preferably draft-free environment.
  • the surface is vacuum-packed for transport.
  • Such packaging is already sufficient to transfer the work process according to the invention from the dust-sensitive component assembly to outside vendors.
  • the statistical stability of the work result, with its-qualitative improvements, is further improved if the sandblasting agent is not re-circulated.
  • the sandblasting agent that is normally usual in sandblasting technology, it cannot be precluded that removed particles of the basic material remain in the sandblasting agent.
  • Treatment by means of magnetic separators is not possible in the case of the plastics to be treated by means of the method according to the invention, since they are not magnetic. They must therefore be treated by means of wind-sifting or flotation. Eliminating such treatment also eliminates these method steps.
  • the task is also accomplished by a semi-finished product, preferably made of carbon fiber reinforced plastic, having a plastic surface prepared for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, wherein the surface is fashioned by means of a treatment according to one or more of the above method claims, by means of a sandblasting agent distributed in a jet of a gaseous fluid.
  • prepregs are pretreated in a sandblasting method according to the invention, for bonding with stringers, for example, onto outer skins, deep bonding, ribs, reinforcements, etc.
  • the method causes a slight removal of material, without any impairment of the dimensional accuracy of the component. It cleans the surface by means of mechanical removal of the surface, but this removal can be metered precisely, in advantageous manner. There is approximately ten times greater security against damage to fibers of the plastic.
  • the sandblasting method is carried out dry, whereby the effect on the component surface is essentially determined by the selection of the sandblasting agent. The surface roughness is primarily determined by the sandblasting agent and the pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Inorganic Fibers (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Ceramic Products (AREA)

Abstract

The invention relates to a method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts of aircraft by abrasive removal of the surface. In order to reduce the risk of cutting fibers during grinding while allowing greater strength of the bond so as to decrease the amount of fashioning to be done, the sand-blasting process is carried out by means of an abrasive that is distributed in dried air. A sharp-edged corundum grain which preferably has a grain size ranging between 0 and 90 m is used as an abrasive.

Description

  • The invention relates to a method for preparing plastic surfaces, preferably surfaces of carbon fiber reinforced plastics, for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, by means of abrasive removal of the surface.
  • Such prepared surfaces are needed in modern aircraft construction in order to be able to build even lighter structures, by means of processing carbon fiber reinforced plastics. For example, the bond surfaces of the upper and lower shell of supporting surfaces must be pretreated carefully, before they are bonded together to produce the finished wing. In this connection, frames and stringers must also be laminated in between the shells.
  • The structural parts, which are subject to extreme stress in operation, are not allowed to fail. However, based on experience, bond points are frequently the cause for intolerable weakening of the structural part, because of defect points that have less strength than the basic material.
  • To avoid such defect points, the surfaces that are intended for further processing by means of bonding are first ground, and complicated quality assurance measures are taken, in order to check the result of grinding.
  • When grinding laminated rough surfaces, there is the risk that the fibers that determine the strength are damaged by the grinding process. For this purpose, optical inspections are required, since fibers that are ground through are impermissible. In addition, a measurement of the surface resistance is made.
  • To determine contaminated points, a water-break test is performed, which takes advantage of the difference in surface tension of ground and contaminated surfaces, in order to be able to make a statement about the quality of the result of grinding. In this connection, the bond surface is completely wetted using de-ionized water. Subsequently, the surface is set vertically, so that the water can flow off. In the case of a well-cleaned surface, the water flows off evenly. Water beads form at dirty points. Such points must be additionally ground. The parts must first be dried in an oven, in order to remove the water, i.e. any residual moisture.
  • The space requirement for the grinding machines required for these processing steps must be taken into consideration as early as in the design of the structural parts. In the interior space of the wings, in particular, the ability to reach narrow dead-end-type spaces with the grinding machine exists only with difficulty.
  • It is the task of the invention to propose a method for preparing plastic surfaces, preferably surfaces of carbon fiber reinforced plastics, for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, by means of abrasive removal of the surface, which method reduced the risk of cutting of the fibers but, at the same time, makes greater strength of the bond possible, with less finishing.
  • This task is accomplished, in the case of a method of this type, in that the material removal takes place by means of an abrasive sandblasting agent that is distributed in a gaseous fluid. If the time that is required in order to remove the surface, usually down to the fiber, i.e. to destroy it, is measured, about one-tenth of this time is surprisingly sufficient to achieve a treatment of the surface that is sufficient for the bond. The quality of this surface actually surpasses that of a ground surface. In fracture tests, the components fail not at the bond point, but rather in the basic material, and this significantly increases the ability of the bonded structural parts to withstand stress.
  • Contamination of the mechanically cleaned surface with the fluid is advantageously avoided in that the gaseous fluid is dried air from which oil has been removed.
  • Particularly durable bonds are achieved if a sharp-edged corundum grain, preferably in a grain size range between 0 and 90 μm, particularly between 17 and 62 μm, is used as the sandblasting agent.
  • An advantageously uniform working result can be achieved in that the sandblasting agent is applied to the surface to be treated by means of a low-pressure jet, preferably from a pressure boiler at less than 2.5 bar.
  • The same purpose is served by the measure of applying the sandblasting agent to the surface to be treated by means of an eddy jet nozzle. The rotating jet of the eddy jet nozzle prevents the formation of disadvantageous so-called hot spots.
  • An optical inspection of the work result is advantageously sufficient, in order to assure sufficient quality of the surface. The treatment with the sandblasting agent takes place as long as necessary in order to achieve an almost cloud-free, matt, treated surface. This quality is advantageously defined analogous to DIN EN ISO 12944-4 SA 2.5, by way of the work result. Complicated water-break tests with drying steps in large, complicated ovens can therefore be eliminated.
  • For finishing the treated surface, it is surprisingly sufficient if the treated surface is blown off with dried and oil-free air, in order to remove the sandblasting agent. Any remaining individual grains of the sandblasting agent that might have penetrated deeper into the surface surprisingly do not have a disadvantageous effect.
  • For quality assurance, it is sufficient that a quality inspection of the treated surface takes place by means of measuring a surface resistance and/or by means of an optical inspection using a comparison sample.
  • The reproducibility of the work result is additionally improved if the treatment takes place in an air-conditioned, preferably draft-free environment.
  • Before transport of the treated parts to further processing, it is provided that the surface is vacuum-packed for transport. Such packaging is already sufficient to transfer the work process according to the invention from the dust-sensitive component assembly to outside vendors.
  • The statistical stability of the work result, with its-qualitative improvements, is further improved if the sandblasting agent is not re-circulated. In the treatment of the sandblasting agent that is normally usual in sandblasting technology, it cannot be precluded that removed particles of the basic material remain in the sandblasting agent. Treatment by means of magnetic separators is not possible in the case of the plastics to be treated by means of the method according to the invention, since they are not magnetic. They must therefore be treated by means of wind-sifting or flotation. Eliminating such treatment also eliminates these method steps.
  • The task is also accomplished by a semi-finished product, preferably made of carbon fiber reinforced plastic, having a plastic surface prepared for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, wherein the surface is fashioned by means of a treatment according to one or more of the above method claims, by means of a sandblasting agent distributed in a jet of a gaseous fluid.
  • For example, prepregs are pretreated in a sandblasting method according to the invention, for bonding with stringers, for example, onto outer skins, deep bonding, ribs, reinforcements, etc. The method causes a slight removal of material, without any impairment of the dimensional accuracy of the component. It cleans the surface by means of mechanical removal of the surface, but this removal can be metered precisely, in advantageous manner. There is approximately ten times greater security against damage to fibers of the plastic. The sandblasting method is carried out dry, whereby the effect on the component surface is essentially determined by the selection of the sandblasting agent. The surface roughness is primarily determined by the sandblasting agent and the pressure. Particularly good results were achieved when using an eddy jet nozzle having the type designation Roto Soft Blast Mate Etc Roto Soft jet nozzles DK 8.5/M, in which the feed of sandblasting agent was set in the scale 2 cm metering valve. The supply of compressed air was provided at 2.5 bar, using a pressure jet boiler from the Blast Mate company. The sandblasting agent used was high-quality corundum, white, 0.07 to 0 mm. After an almost cloud-free blasting image was achieved, in analogy to DIN EN ISO 12944-4 SA 2.5, the only thing that took place was dust removal from the surface by means of purified compressed air.
  • In the final analysis, the quality of the surface produced in this manner far surpassed the quality previously achieved by means of grinding.

Claims (12)

1. Method for preparing plastic surfaces, preferably surfaces of carbon fiber reinforced plastics, for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, by means of abrasive removal of the surface, wherein the material removal takes place by means of an abrasive sandblasting agent that is distributed in a gaseous fluid.
2. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the gaseous fluid is dried air from which oil has been removed.
3. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein a sharp-edged corundum grain, preferably in a grain size range between 0 and 90 μm, particularly between 17 and 62 μm, is used as the sandblasting agent.
4. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the sandblasting agent is applied to the surface to be treated by means of a low-pressure jet, preferably from a pressure boiler at less than 2.5 bar.
5. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the sandblasting agent is applied to the surface to be treated by means of an eddy jet nozzle.
6. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein a treatment with the sandblasting agent takes place as long as necessary in order to achieve an almost cloud-free, matt, treated surface.
7. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the treated surface is blown off with dried and oil-free air, in order to remove the sandblasting agent.
8. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein a quality inspection of the treated surface takes place by means of measuring a surface resistance and/or by means of an optical inspection using a comparison sample.
9. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the treatment takes place in an air-conditioned, preferably draft-free environment.
10. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the surface is vacuum-packed for transport.
11. Method for preparing plastic surfaces for further processing to produce supporting structural parts, as recited in claim 1, wherein the sandblasting agent is not re-circulated.
12. Semi-finished product, preferably made of carbon fiber reinforced plastic, having a plastic surface prepared for further processing to produce supporting structural parts, particularly supporting surfaces of aircraft, wherein the surface is fashioned by means of a treatment according to claim 1, by means of a sandblasting agent distributed in a jet of a gaseous fluid.
US10/508,290 2003-01-22 2003-11-05 Method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts Abandoned US20050130565A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10302594A DE10302594A1 (en) 2003-01-22 2003-01-22 Surface preparation of plastic, in particular carbon fiber reinforced plastic, surfaces, involves use of a gas jet containing abrasive
DE10302594.4 2003-01-22
PCT/DE2003/003675 WO2004067229A1 (en) 2003-01-22 2003-11-05 Method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts

Publications (1)

Publication Number Publication Date
US20050130565A1 true US20050130565A1 (en) 2005-06-16

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US10/508,290 Abandoned US20050130565A1 (en) 2003-01-22 2003-11-05 Method for preparing surfaces of carbon fiber-reinforced plastics for further processing into supporting structural parts

Country Status (9)

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US (1) US20050130565A1 (en)
EP (1) EP1592535B1 (en)
AT (1) ATE482054T1 (en)
DE (2) DE10302594A1 (en)
DK (1) DK1592535T3 (en)
ES (1) ES2348707T3 (en)
PT (1) PT1592535E (en)
SI (1) SI1592535T1 (en)
WO (1) WO2004067229A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110133358A1 (en) * 2008-05-07 2011-06-09 Carsten Barlag Method and device for treating a surface of a fibre composite material
CN111390654A (en) * 2020-03-30 2020-07-10 中国科学院宁波材料技术与工程研究所 A kind of treatment method of carbon fiber resin matrix composite material surface
US11541508B2 (en) * 2017-11-10 2023-01-03 Premium Aerotec Gmbh Method for treating a surface of a fibre composite component

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Publication number Priority date Publication date Assignee Title
RU2457933C2 (en) * 2010-10-28 2012-08-10 Государственное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" Abrasive-jet cleaning of surfaces from organic dirt

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US3691000A (en) * 1971-03-10 1972-09-12 Celanese Corp Glass fiber reinforced composite article exhibiting enhanced longitudinal tensile and compressive moduli
US3828520A (en) * 1973-04-04 1974-08-13 Substrate Inc Vacuum packaging method and platen therefor
US4731125A (en) * 1984-04-19 1988-03-15 Carr Lawrence S Media blast paint removal system
US4787179A (en) * 1987-08-10 1988-11-29 Lewis Richard E Abrasive blasting containment system
US5024711A (en) * 1988-01-25 1991-06-18 Thera Method for preparing a substrate surface for bonding with a synthetic resin by applying a layer by sand blasting
US5063015A (en) * 1989-03-13 1991-11-05 Cold Jet, Inc. Method for deflashing articles
US5092084A (en) * 1988-04-27 1992-03-03 Schlick-Roto-Jet Maschinenbau Gmbh Method and apparatus for removing coatings from plastic laminates
US5261191A (en) * 1990-09-15 1993-11-16 Waltom Services, Inc. Method of surface preparation
US5387172A (en) * 1992-08-13 1995-02-07 Sigri Great Lakes Carbon Gmbh Fiber-reinforced plastic cylinder with an outer wear-resistant layer of filler-containing plastic and a method for producing the same
US5431958A (en) * 1992-03-09 1995-07-11 Sharp Kabushiki Kaisha Metalorganic chemical vapor deposition of ferroelectric thin films
US5536200A (en) * 1993-02-03 1996-07-16 Kiess; Karl H. Nozzle of a sand blaster for dust-free blasting of planar surfaces
US5763028A (en) * 1993-06-08 1998-06-09 Ajinomoto Co., Inc. Doubly-packaged easily oxidizable article
US6095903A (en) * 1996-10-04 2000-08-01 U.S. Philips Corporation Method and device for the mechanical removal of a layer of alien material from a basic material
US6431958B1 (en) * 1998-03-13 2002-08-13 Virsol Method for mechanochemical treatment of a material

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DE3026650A1 (en) * 1980-07-14 1982-04-08 Manfred Meyer GmbH, 7000 Stuttgart Pretreating plastics surfaces before coating - by bombardment with accelerated metal or mineral particles to improve bond
DE19517570A1 (en) * 1995-05-12 1996-11-14 Guenter Ott Surface preparation method using jet for visual effect on e.g. plywood
CN1195272A (en) * 1996-06-13 1998-10-07 斯特里克斯有限公司 Liquid Electric Heating Container
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JPH11198034A (en) * 1998-01-16 1999-07-27 Nippei Toyama Corp Grinding method and grinding machine
DE29820577U1 (en) * 1998-11-18 1999-01-28 Zander Umwelt GmbH, 91080 Spardorf Grinding cabin arrangement for installation in buildings
DE19943005A1 (en) * 1999-09-09 2001-05-23 Heinrich Gruber Process for cleaning the surface of a plastic object

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691000A (en) * 1971-03-10 1972-09-12 Celanese Corp Glass fiber reinforced composite article exhibiting enhanced longitudinal tensile and compressive moduli
US3828520A (en) * 1973-04-04 1974-08-13 Substrate Inc Vacuum packaging method and platen therefor
US4731125A (en) * 1984-04-19 1988-03-15 Carr Lawrence S Media blast paint removal system
US4787179A (en) * 1987-08-10 1988-11-29 Lewis Richard E Abrasive blasting containment system
US5024711A (en) * 1988-01-25 1991-06-18 Thera Method for preparing a substrate surface for bonding with a synthetic resin by applying a layer by sand blasting
US5092084A (en) * 1988-04-27 1992-03-03 Schlick-Roto-Jet Maschinenbau Gmbh Method and apparatus for removing coatings from plastic laminates
US5063015A (en) * 1989-03-13 1991-11-05 Cold Jet, Inc. Method for deflashing articles
US5261191A (en) * 1990-09-15 1993-11-16 Waltom Services, Inc. Method of surface preparation
US5431958A (en) * 1992-03-09 1995-07-11 Sharp Kabushiki Kaisha Metalorganic chemical vapor deposition of ferroelectric thin films
US5387172A (en) * 1992-08-13 1995-02-07 Sigri Great Lakes Carbon Gmbh Fiber-reinforced plastic cylinder with an outer wear-resistant layer of filler-containing plastic and a method for producing the same
US5536200A (en) * 1993-02-03 1996-07-16 Kiess; Karl H. Nozzle of a sand blaster for dust-free blasting of planar surfaces
US5763028A (en) * 1993-06-08 1998-06-09 Ajinomoto Co., Inc. Doubly-packaged easily oxidizable article
US6095903A (en) * 1996-10-04 2000-08-01 U.S. Philips Corporation Method and device for the mechanical removal of a layer of alien material from a basic material
US6431958B1 (en) * 1998-03-13 2002-08-13 Virsol Method for mechanochemical treatment of a material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110133358A1 (en) * 2008-05-07 2011-06-09 Carsten Barlag Method and device for treating a surface of a fibre composite material
US8715553B2 (en) * 2008-05-07 2014-05-06 Airbus Operations Gmbh Method and device for treating a surface of a fibre composite material
US11541508B2 (en) * 2017-11-10 2023-01-03 Premium Aerotec Gmbh Method for treating a surface of a fibre composite component
CN111390654A (en) * 2020-03-30 2020-07-10 中国科学院宁波材料技术与工程研究所 A kind of treatment method of carbon fiber resin matrix composite material surface

Also Published As

Publication number Publication date
ES2348707T3 (en) 2010-12-13
DK1592535T3 (en) 2010-12-13
DE10302594A1 (en) 2004-07-29
SI1592535T1 (en) 2010-11-30
PT1592535E (en) 2010-10-12
EP1592535B1 (en) 2010-09-22
EP1592535A1 (en) 2005-11-09
DE50313119D1 (en) 2010-11-04
WO2004067229A1 (en) 2004-08-12
ATE482054T1 (en) 2010-10-15

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