WO2005116148A1 - 耐食性および防錆性に優れた鋼材用塗料 - Google Patents
耐食性および防錆性に優れた鋼材用塗料 Download PDFInfo
- Publication number
- WO2005116148A1 WO2005116148A1 PCT/JP2005/010289 JP2005010289W WO2005116148A1 WO 2005116148 A1 WO2005116148 A1 WO 2005116148A1 JP 2005010289 W JP2005010289 W JP 2005010289W WO 2005116148 A1 WO2005116148 A1 WO 2005116148A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paint
- corrosion resistance
- steel
- alloy
- metal
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K3/08—Metals
Definitions
- the present invention relates to a corrosion-resistant paint, and more particularly to a corrosion-resistant paint and a corrosion-resistant steel exhibiting excellent corrosion resistance and corrosion resistance when applied to the surface of various steel materials.
- Zinc rich paint which is composed of inorganic material as a vehicle (liquid binder component), is mainly used.
- Zinc paint is mainly used as an undercoat for short-term, heavy-duty anti-corrosion paints.
- the feature of the anti-corrosion mechanism is the sacrificial anti-corrosion effect of zinc powder contained in the paint film.
- the anticorrosion performance of the zinc rich paint film is strongly dependent on the sacrificial anticorrosion effect of zinc powder. May not be maintained over time.
- JP-A-59-52645 and JP-A-59-167249 zinc paint containing Zn-Mg alloy powder in addition to zinc powder is disclosed, and in JP-A-59-198142.
- a zinc paint containing zinc powder and Mn powder in addition to zinc powder has been proposed.
- Japanese Patent Application Laid-Open No. 113111178 discloses a long-life anticorrosion performance of a Zn— (5 to 15%) Mg alloy powder in a paint. Also JP-A 2 - 7393 The 2 discloses metal structure showed high life corrosion performance of Zn- M g alloy powder composed Ri good Zn and MgZn 2. On the other hand, JP-A-8 - The 60324 JP Zn- Mg- A1 albeit at molten main Tsu key layer, which metal structure of main Tsu key layer is composed of Zn and Mg 2 Z ni l and the Zn MgZn It was shown that it was more excellent in corrosion resistance than that composed of 2 .
- the composition of the metal powder is more than that of the Zn phase and the Zn-Mg alloy (Zn-Mg eutectic or intermetallic compound) phase.
- a metal powder in which Mg is dissolved in Zn are mixed as particles, and it is found that sufficient corrosion resistance is obtained.
- the Mg content is 0.3 to 6% by mass and the balance is Zn.
- a paint, solid structure of the metallic powder is Zn phase and Zn- Mg alloy phase, and Zn and Mg JP-A-2002-285102 discloses a corrosion-resistant paint characterized in that three kinds of solution phases are the main components, and these are mixed in the paint as powder particles.
- the particulate metal component of the composition comprises a zinc alloy in flake form comprising more than 50% by weight of zinc in the alloy flakes and less than 50% by weight of a non-zinc alloy metal remaining in the alloy flakes.
- a coating composition is disclosed. In particular, a solution to the problem of hydrogen generation due to the reaction with water, which is a problem in these metal compositions, is described, but the process is complicated. Disclosure of the invention
- the prior art paint is a mixture of a metal powder containing 0.3 to 6% by mass of Mg and a balance of Zn as a main component mixed with a vehicle (liquid binder component).
- Zn-Mg alloy powders and the like containing three phases as main components, a Zn phase, a Zn-Mg alloy phase, and a solid solution phase of Zn and Mg, each of which is mixed in powder as powder particles, are Zn powders.
- the corrosion protection is improved, it is necessary to control the mixed state of the metallographic structure in order to ensure sufficient corrosion protection stably. Therefore, there are great restrictions on the manufacturing method and economy, and further improvement is required.
- the present invention aims to provide a paint having sacrificial corrosion protection that exhibits better corrosion protection and corrosion protection than before, and the gist of the invention is as follows. It is on the street.
- the coating material for steel material according to any one of (1) to (3), wherein the coating material comprises: an alloy containing Zn as a main component.
- the present inventors have conducted various studies on various metals and alloy powders having an electric potential lower than that of steel in an aqueous solution in order to solve the above-mentioned problems.
- a flat flake-shaped alloy powder to the coating material and controlling the water content in the coating before coating to 0.8% by mass or less, the self-corrosion of the alloy powder is suppressed, Formed a stable thin corrosion product layer on the surface of the alloy powder due to a small amount of moisture contained in the metal powder, maintaining a metal flake state with moderate stability and reactivity, and excellent as an anticorrosion paint It has been found that anticorrosion properties can be obtained stably.
- Pure Zn, pure Al, pure Mn, and pure Mg are metals whose electric potential is lower than that of iron in an aqueous solution. Pure Zn, pure Al, and alloy metals whose electric potential is lower than that of iron in an aqueous solution
- An alloy containing at least two of pure Mn and pure Mg can be used, and unavoidable impurities or elements other than those described above can be contained.
- the composition of the metal powder is a Zn phase, a Zn-Mg alloy (Zn-Mg eutectic or intermetallic compound) phase, and a corrosion-resistant property when a mixture containing a metal phase of a solid solution of Zn and Mg is formed into a paint.
- the Mg content in the metal powder is preferably 0.1 to 10% by mass, more preferably 0.2 to 5% by mass, and the balance is preferably composed of a metal powder mainly composed of Zn.
- the Mg concentration is less than 0.1% by mass, the corrosion resistance is improved by Mg. The effect is reduced, and if it exceeds 10% by mass, the effect is saturated and the economic efficiency is reduced.
- the content of the remaining Zn is not particularly specified, but is usually about 90 to 99.9% by mass.
- A1 it is preferable to add to the metal powder in addition to the above components.
- alloy flakes are formed by the addition of A1
- even more excellent anticorrosion properties can be stably obtained as compared with the conventional one.
- the content is less than 0.1% by mass, no effect is required, and 10% by mass is not obtained. The effect is saturated even if it is added in excess of%.
- Flake-shaped metal or alloy powders are produced by heating and melting a metal or alloy material, which is a general-purpose powder production method such as the volatilization method (evaporation and solidification method) and the atomization method (spray method).
- a metal or alloy material which is a general-purpose powder production method such as the volatilization method (evaporation and solidification method) and the atomization method (spray method).
- volatilization method evaporation and solidification method
- atomization method atomization method
- the metal powder is a Mg-Zn or Mg-Al-Zn alloy
- a metal material with a Mg concentration of 0.1 to 10% by mass (usually used for fine adjustment with Mg-containing Zn ingot) Of pure Zn, pure Mg, etc., and pure A1 as appropriate) are heated and melted and processed by a general-purpose powder manufacturing method such as the volatilization method (evaporation coagulation method) or the atomization method (spray method).
- a metal powder can be produced.
- an atomization method (a nebulization method) that does not need to consider the differences in the boiling points between the Mg solid solution phase, the Zn-Mg intermetallic compound phase, and the Zn phase formed during cooling.
- the primary particles thus obtained can be made into stable alloy flakes by using a method such as roll rolling, ball mill, or bead mill.
- the metal or alloy may be in the form of flakes, but the preferred size is as follows. If the thickness of the metal flake exceeds 5 ⁇ , it will be difficult to obtain a thin film coating for the purpose of short-term protection, so the thickness of the metal flake is preferably 5 ⁇ m or less. However, when more stable corrosion protection and painting workability are desired, it is more preferable to set the thickness to 2 ⁇ or less.
- the lower limit of the thickness of the metal flakes is preferably 0.05 / im from the viewpoint of paintability. If the major axis length (average particle size) of the metal flakes is less than l / zm, the appearance of the coating will be poor.
- the average particle diameter of the long axis exceeds 50 ⁇ m, since unevenness occurs. If the average particle diameter of the major axis exceeds 50 ⁇ m, nozzle closure during spray coating or the like will occur, so that it is preferably 50 ⁇ or less. Nostalgic.
- Such a metal or alloy powder is blended with a vehicle (liquid binder) to form a coating material.
- the vehicle includes an alkyl silicate, an alkali silicate, an epoxy resin, a urethane resin, a phenolic resin, and a polyester.
- Liquid binders used for base resins and other zinc-rich binders can be used.
- the paint type may be either an emulsion type or a solvent type.
- ordinary additives can be added as long as the corrosion resistance is not impaired.
- a third component such as boron may be added to improve the adhesion to the top coat. Good.
- the mixing ratio of the metal or alloy powder and the liquid binder is such that the metal or alloy powder is 60 to 90% by mass, preferably 70 to 80% by mass, and the liquid binder is 10 to It is preferred to uniformly mix 40% by weight, preferably 20-30% by weight.
- an organic binder such as an epoxy resin, urethane resin, phenoxy resin, or polyester resin
- it may be applied directly to a steel sheet or a steel material, but the surface may be blasted in advance or phosphorous may be applied. If the coating is applied after the acid salt treatment and the chromate treatment, a coated steel sheet with better corrosion resistance can be obtained.
- the corrosion resistance increases.However, in order to prevent cracking of the paint film after drying and sagging of the paint at the time of painting, apply the paint to a thickness of 300 ⁇ m or less, preferably 5 to 100 ⁇ m. Is preferred. Corrosion protection is exhibited by the coating film thus formed.
- the three phases of Zn phase, Zn-Mg alloy phase and Zn-Mg solid solution phase are unevenly distributed inside and outside the particles by treatment by volatilization method (evaporation solidification method), atomization method (spray method), etc. .
- volatilization method evaporation solidification method
- atomization method atomization method
- Example 1 Representative examples of metals whose electric potential is lower than that of iron in an aqueous solution include pure Zn, pure Al, pure Mn, Zn-5Al, Zn-20A1, Zn-30A1, Zn-40A1, Zn-55A1, and Zn -11A1- 3 Spherical primary metal powder obtained by heating and melting a metal material of Mg-0.2Si and subjecting it to general-purpose powder production methods such as volatilization (evaporation and coagulation) and atomization (spraying). Was manufactured.
- metal flakes or alloy metal flakes having a thickness of 5 ⁇ or less and a long axis average particle diameter of 1 to 50 ⁇ m were prepared by pallet rolling, a ball mill, and a bead mill.
- the water content in the paint was adjusted to be 0.1 to 0.8% by mass and 1.0 to 1.3% by mass, and visual observation and hydrogen gas analysis were performed. The presence or absence of a reaction was investigated. For all metal flakes, when the water content in the paint was 0 :! to 0.8% by mass, no generation of hydrogen was observed, whereas when the water content was 1.0 to 1.3% by mass, the surface of the metal flakes was observed. Hydrogen generation was visually observed. Using a paint with a water content of 0 :! to 0.8% by mass, a sample of 15 ⁇ m in thickness was formed on a shot-blasted steel plate with a width of 50 mm, a length of 150 mm, and a thickness of 4 ⁇ . Created.
- the coated surface and the ground surface of the ingot collected during preparation of the metal flakes were immersed in a 3% by mass solution at room temperature, and the immersion protection potential of the coated film and the ingot was evaluated based on the silver-silver monochloride electrode. .
- Each coating showed a potential of ⁇ 50 mV with respect to the potential of the ingot, and was confirmed to have a good anticorrosion potential.
- the paint of the present invention has a lower potential in an aqueous solution than steel. Flakes with a thickness of 5 ⁇ or less, an average major axis particle diameter of 1 to 50 ⁇ m, and a water content of 0.8 mass before application. %, It was found that a coating film using a steel material coating having excellent corrosion resistance and corrosion resistance of not more than% did not cause self-reaction and had excellent corrosion protection performance.
- Table 1 shows the composition of the prepared alloy flakes when preparing the primary alloy powder, the average flake thickness after flake rolling, and the average flake major axis length.
- Ethyl silicate was used as the paint binder, and various paints were prepared by mixing 75% by mass of the alloy powder shown in Table 1 and 25% by mass of the binder.
- the surface of the coating film was immersed in a 1% solution of 3% by mass at room temperature, and the period (time) during which the potential was maintained below the anticorrosion potential of 0.78 V was evaluated based on the silver-silver monochloride electrode. Table 2 shows the results.
- Example 2 Using the same paint as used in Example 1 above, various samples having a 15 ⁇ m coating film formed on a shot-blasted steel plate having a width of 50 mm, a length of 150 mm, and a thickness of 4 mm were prepared. Created. The surface of each of the prepared samples was subjected to crosscutting, and the anticorrosion performance of each sample was evaluated based on the time until the occurrence of redness in an SST (salt water fog test) environment based on JIS Z 2371. The results are also shown in Table 2.
- SST salt water fog test
- the paint using the alloy flakes of the present invention has a longer reddish emission time compared to other comparative paints, and has anticorrosion and anticorrosion properties. It turns out that it is extremely excellent in sex. Industrial applicability
- the paint of the present invention has a sacrificial corrosion resistance exhibiting excellent corrosion resistance and corrosion resistance. Therefore, it can be suitably used as a paint for anticorrosion measures of steel materials used for ships, industrial machines, vehicles, chemical industrial facilities, buildings, bridges and other structures, and their manufacture.
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004161128A JP2005336431A (ja) | 2004-05-31 | 2004-05-31 | 耐食性および防錆性に優れた鋼材用塗料 |
JP2004-161128 | 2004-05-31 | ||
JP2004-161129 | 2004-05-31 | ||
JP2004161129A JP2005336432A (ja) | 2004-05-31 | 2004-05-31 | 耐食性および防錆性に優れた鋼材用塗料及び鉄鋼材料 |
Publications (1)
Publication Number | Publication Date |
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WO2005116148A1 true WO2005116148A1 (ja) | 2005-12-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/010289 WO2005116148A1 (ja) | 2004-05-31 | 2005-05-30 | 耐食性および防錆性に優れた鋼材用塗料 |
Country Status (2)
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TW (1) | TW200617120A (ja) |
WO (1) | WO2005116148A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2499205B1 (de) * | 2009-11-10 | 2018-03-14 | ECKART GmbH | Korrosionsschutzbeschichtungen, insbesondere für metalle ausgewählt aus der gruppe bestehend aus aluminium, aluminiumlegierungen, stahl und mit einem zinkhaltigen überzug versehenem stahl, und mischungen zu ihrer herstellung |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59176361A (ja) * | 1983-03-28 | 1984-10-05 | Dainippon Toryo Co Ltd | 防食ライニング組成物 |
JPS6065075A (ja) * | 1983-09-20 | 1985-04-13 | Dainippon Toryo Co Ltd | 防錆塗料組成物 |
JPS61101561A (ja) * | 1984-10-19 | 1986-05-20 | ユニオン、カーバイド、コーポレーシヨン | 一液系耐溶剤性ジンクリツチ熱可塑性ポリヒドロキシエーテル塗料 |
JPS61228949A (ja) * | 1985-04-03 | 1986-10-13 | 新日本製鐵株式会社 | 高耐食性燃料タンク用鋼板 |
JPH04504584A (ja) * | 1987-02-13 | 1992-08-13 | フイナ・リサーチ・ソシエテ・アノニム | 改良されたシヨツプ・プライマー組成物の製造方法 |
JPH09268264A (ja) * | 1996-03-29 | 1997-10-14 | Nippon Light Metal Co Ltd | ノンクロム型金属防食用被覆組成物 |
JPH10219473A (ja) * | 1997-02-05 | 1998-08-18 | Matsufumi Takatani | マグネシウムベース金属成形体の表面処理方法 |
JPH11343422A (ja) * | 1998-06-01 | 1999-12-14 | Mitsui Mining & Smelting Co Ltd | 有機防錆塗料用防錆顔料 |
JP2002285102A (ja) * | 2001-02-14 | 2002-10-03 | Metal Coatings Internatl Inc | 腐蝕保護を与えるための粒状金属合金被覆 |
-
2005
- 2005-05-30 WO PCT/JP2005/010289 patent/WO2005116148A1/ja active Application Filing
- 2005-05-30 TW TW094117654A patent/TW200617120A/zh unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59176361A (ja) * | 1983-03-28 | 1984-10-05 | Dainippon Toryo Co Ltd | 防食ライニング組成物 |
JPS6065075A (ja) * | 1983-09-20 | 1985-04-13 | Dainippon Toryo Co Ltd | 防錆塗料組成物 |
JPS61101561A (ja) * | 1984-10-19 | 1986-05-20 | ユニオン、カーバイド、コーポレーシヨン | 一液系耐溶剤性ジンクリツチ熱可塑性ポリヒドロキシエーテル塗料 |
JPS61228949A (ja) * | 1985-04-03 | 1986-10-13 | 新日本製鐵株式会社 | 高耐食性燃料タンク用鋼板 |
JPH04504584A (ja) * | 1987-02-13 | 1992-08-13 | フイナ・リサーチ・ソシエテ・アノニム | 改良されたシヨツプ・プライマー組成物の製造方法 |
JPH09268264A (ja) * | 1996-03-29 | 1997-10-14 | Nippon Light Metal Co Ltd | ノンクロム型金属防食用被覆組成物 |
JPH10219473A (ja) * | 1997-02-05 | 1998-08-18 | Matsufumi Takatani | マグネシウムベース金属成形体の表面処理方法 |
JPH11343422A (ja) * | 1998-06-01 | 1999-12-14 | Mitsui Mining & Smelting Co Ltd | 有機防錆塗料用防錆顔料 |
JP2002285102A (ja) * | 2001-02-14 | 2002-10-03 | Metal Coatings Internatl Inc | 腐蝕保護を与えるための粒状金属合金被覆 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2499205B1 (de) * | 2009-11-10 | 2018-03-14 | ECKART GmbH | Korrosionsschutzbeschichtungen, insbesondere für metalle ausgewählt aus der gruppe bestehend aus aluminium, aluminiumlegierungen, stahl und mit einem zinkhaltigen überzug versehenem stahl, und mischungen zu ihrer herstellung |
EP3381987A1 (de) * | 2009-11-10 | 2018-10-03 | ECKART GmbH | Grundkörper mit korrosionsschutzbeschichtung und verfahren zur herstellung einer korrosionsschutzbeschichtung |
Also Published As
Publication number | Publication date |
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TW200617120A (en) | 2006-06-01 |
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