WO2020233731A1 - Coated surface, use and method - Google Patents

Coated surface, use and method Download PDF

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Publication number
WO2020233731A1
WO2020233731A1 PCT/DE2019/000221 DE2019000221W WO2020233731A1 WO 2020233731 A1 WO2020233731 A1 WO 2020233731A1 DE 2019000221 W DE2019000221 W DE 2019000221W WO 2020233731 A1 WO2020233731 A1 WO 2020233731A1
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WO
WIPO (PCT)
Prior art keywords
coating
acid
ferrous metals
copolyamide
powder
Prior art date
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PCT/DE2019/000221
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German (de)
French (fr)
Inventor
Volker EMGE
Original Assignee
Botzem Emge Pulverbeschichtungen GmbH
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.)
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Publication date
Application filed by Botzem Emge Pulverbeschichtungen GmbH filed Critical Botzem Emge Pulverbeschichtungen GmbH
Priority to EP19782467.5A priority Critical patent/EP3972744A1/en
Priority to DE112019007347.8T priority patent/DE112019007347A5/en
Publication of WO2020233731A1 publication Critical patent/WO2020233731A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
    • 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
    • B05D7/14—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 metal, e.g. car bodies
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • 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
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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
    • C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/305—Polyamides or polyesteramides
    • 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
    • B05D2505/00—Polyamides
    • 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
    • B05D3/10—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 other chemical means
    • B05D3/102—Pretreatment of metallic substrates
    • 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
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/08—Orthophosphates
    • C23C22/12—Orthophosphates containing zinc cations
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides

Definitions

  • the invention relates to a coated surface according to the preamble of claim 1, a use of a surface coating according to the preamble of claim 8 and a method according to the preamble of claim 9.
  • the object of the present invention is to provide a coated surface that is easy to manufacture and can withstand electrical and mechanical loads.
  • the object is achieved by a coated surface, in particular metal material surface, in particular metal comprising aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, the coating being designed with a predetermined composition, comprising, in particular consisting of, polyamide 12 and Polyamide 6 and in particular polyamide 66, in particular obtained by coating, in particular spraying, with copolyamide powder, in particular a predetermined particle distribution, in particular comprising grain sizes 0 to 0.63 mm2, in particular particle size distribution according to D ISO 13322 12, which is in particular designed to be statically chargeable, on an oppositely chargeable surface, in particular heated to a melting temperature of about 80 ° to about 130 °, and / or in particular with subsequent heating to a temperature after coating, in particular spraying, with the copolyamide powder
  • CONFIRMATION COPY from about 80 ° to about 130 °, the coating in particular comprising, in particular consisting of, caprolactam and laurolactam and / or 12-aminodeodecanoic acid, and in particular at least two dicarboxylic acids.
  • the invention forms a very stable, dense and temperature-resistant surface coating, particularly suitable as an insulation coating, in particular for metals.
  • the invention is also good at dissipating heat, so that it has a balancing effect in the event of temperature loads. Depending on the thickness of the application, a closed and homogeneous surface is easily achieved.
  • the coating has a high breakdown resistance to voltage, particularly suitable as an electrotechnical insulation coating for cooling elements and / or heating elements and / or energy storage housings and / or casings and / or separations, for storage media and / or drive systems.
  • Caprolactam as a polyamide 12, 6, 66 mixture with grain sizes between 0-0.63 mm 2 , particle size D Iso 13322 12 my, mv 160 ° C is advantageous as a component.
  • the coating used has a low melting point and very good chemical resistance given.
  • Caprolactam, more precisely e-caprolactam is the starting material for the ring-opening polymerization of polyamide 6 (Perlon). Although no cleavage product is formed in this reaction, it is often referred to as polycondensation.
  • At least two dicarboxylic acids can advantageously be used as components of the polyamide, and some of the common alphatic dicarboxylic acids can also be substituted by aromatic compounds.
  • the proportion of the aromatic diacid (s) should advantageously not be greater than 10 mol% based on the total formulation, since a further increase in the aromatic proportion results in compositions which no longer crystallize and remain completely amorphous.
  • At least two dicarboxylic acids with about 20-50 mol%.
  • an aliphatic ⁇ , w-dicarboxylic acid with 6 to 14 carbon atoms in particular terephthalic acid and / or isophthalic acid and / or 2,6-naphthalenedicarboxylic acid, is provided, the proportion of aromatic dicarboxylic acids being smaller than about 10 mol%, based on the total amount of components making up 100 mol%.
  • an equimolar amount of a diamine mixture is provided in the copolyamide fine powder to the dicarboxylic acids, selected from a group of the following substances: hexamethylenediamine, piperazine and / or 2-methyl-1,5 diaminopentane, the molar proportion being hexamethylenediamine , based on the diamine mixture, is between about 75 and about 95 mol%.
  • the copolyamide powder composition comprises caprolactam / w-aminocarpronic acid and laurolactam / w-aminolauric acid, further w-aminocarboxylic acids and further polyamide formers such as 6-salt, 6,6-salt and 6 12-salt.
  • the components make it possible to obtain a low-melting copolyamide, in particular a setting of a desired melting temperature of approximately 80 ° -130 °.
  • the object is also achieved by using a coated surface according to one of claims 1 to 7 for electrotechnical insulating coatings for metals, in particular for metal battery boxes as a coating with high breakdown resistance to voltage and / or electrotechnical insulating coating for cooling elements and / or heating elements and / or energy storage housings and / or casings and / or partitions for storage media and drive systems.
  • the object is also achieved by a method for producing a surface coating for an electrotechnical insulation coating on a metal surface, in particular aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, according to one of claims 1 to 7, in particular for ver - Use for electrotechnical insulating coatings, in particular according to claim 8, wherein initially
  • a) surface treatment is carried out by blasting, in particular by means of glass beads,
  • the resulting surface is then degreased using iron phosphate in the case of ferrous metals and / or subsequently a treatment with zirconium solution in the case of non-ferrous metals,
  • copolyamide fine powder comprising polyamide 12.
  • the surface is therefore advantageously blasted for pretreatment, with glass beads being advantageously suitable as blasting media, in particular glass beads with soda glass, in particular according to DIN 52 900, do not cause any foreign deposits or corrosion on the treated surface during blasting. It consists of microscopic round glass beads made of hard-elastic soda glass. The grain size of the glass beads is matched to the respective substrate.
  • a cleaning is then advantageously carried out with iron phosphating, the phosphating with a solution of phosphoric acid ester and for the Applications suitable additives is treated.
  • iron phosphating the workpiece is degreased; when used on steel and iron parts, a conversion layer is formed, which represents an optimal primer for the subsequent coating.
  • This passivation layer serves to improve the adhesion to non-ferrous and ferrous metals, components: hexafluorozirconic acid 45%.
  • the subsequent coating can be carried out by heating the workpiece to a powder melting temperature and then applied using the manual electrostatic spraying process. This method is suitable for components with a low material thickness.
  • the workpiece is heated up until the melting point of the powder coating is reached and a closed, homogeneous surface is achieved.
  • the aim of both methods is to achieve a closed and homogeneous surface; a minimum layer thickness should be applied.
  • fine copolyamide powder is applied statically charged, to an oppositely charged metal surface, in particular with prior and / or subsequent temperature treatment.
  • Copolyamide fine powder is advantageously statically charged and applied to the oppositely charged surface. This is more evenly distributed and, as a fine powder, can be melted better than a coarse powder. A polyester coating can then be applied to cover the surface or create a decorative finish. In addition, this overcoating serves to protect the insulation layer and is used to color or mark the workpieces.
  • the overcoating of the copolyamide coating is advantageously carried out by means of the electrical static application of polyester or epoxy-polyester powder; it is applied after the insulation layer has fused and cooled down and solidified by baking.
  • the melting range of a coating advantageously provided according to the invention with copolyamides according to ISO 11537 DSC, 20 K / min is approximately 120-130 ° C.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a coated surface, particularly a metal material surface, particularly a metal comprising aluminium and/or steel and/or non-ferrous metals and/or ferrous metals, wherein the coating is formed with a predetermined composition, comprising, particularly consisting of, polyamide 12 and polyamide 6 and particularly polyamide 66, particularly obtained by coating, particularly spraying, with copolyamide powder, particularly of a predetermined particle distribution, particularly comprising grain sizes of 0 to 0.63 mm2, particularly a particle size distribution according to ISO 13322, which is designed in particular to be statically chargeable, on an opposing chargeable surface, particularly one heated to a fusion temperature of around 80° to around 130°.

Description

Beschichtete Oberfläche, Verwendung und Verfahren Coated surface, use and process
Die Erfindung betrifft eine beschichtete Oberfläche nach dem Oberbegriff von An- spruch 1 , eine Verwendung einer Oberflächenbeschichtung nach dem Oberbegriff von Anspruch 8 und ein Verfahren nach dem Oberbegriff von Anspruch 9. The invention relates to a coated surface according to the preamble of claim 1, a use of a surface coating according to the preamble of claim 8 and a method according to the preamble of claim 9.
Bekannt ist es, dass beispielsweise Oberflächen von metallischen Gegenständen, Boxen, Akkumulatorbehältern mit Kunststoffbeschichtungen überzogen werden, die häufig empfindlich gegenüber einem Abrieb oder starker mechanischer sowie chemi- scher Belastung reagieren und somit bereits nach kurzer Zeit ihre Wirkung verlieren. It is known that, for example, surfaces of metallic objects, boxes, accumulator containers are coated with plastic coatings that are often sensitive to abrasion or strong mechanical and chemical stress and thus lose their effect after a short time.
Aufgabe der vorliegenden Erfindung ist es, eine beschichtete Oberfläche bereitzu- stellen, die einfach herzustellen und belastbar gegenüber elektrischen und mechani- schen Beanspruchungen ist. The object of the present invention is to provide a coated surface that is easy to manufacture and can withstand electrical and mechanical loads.
Die Aufgabe wird gelöst durch Beschichtete Oberfläche, insbesondere Metallmateri- aloberfläche, insbesondere Metall umfassend Aluminium und/oder Stahl und/oder Nichteisenmetalle und/oder Eisenmetalle, wobei die Beschichtung mit vorbestimmter Zusammensetzung ausgebildet ist, umfassend, insbesondere bestehend aus, Poly- amid 12 und Polyamid 6 und insbesondere Polyamid 66, insbesondere erhalten durch Beschichten, insbesondere Besprühen, mit Copolyamidpulver, insbesondere einer vorbestimmten Partikelverteilung, insbesondere umfassend Korngrößen 0 bis 0,63 mm2, insbesondere Partikelgrößenverteilung nach D Iso 13322 12, das insbe- sondere statisch aufladbar ausgebildet ist, auf einer gegengesetzt aufladbaren, ins- besondere auf eine Schmelztemperatur von etwa 80° bis etwa 130° erwärmten Ober- fläche und/oder insbesondere mit einem nach dem Beschichten, insbesondere Be- sprühen, mit dem Copolyamidpulver nachträglichem Erwärmen auf eine Temperatur The object is achieved by a coated surface, in particular metal material surface, in particular metal comprising aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, the coating being designed with a predetermined composition, comprising, in particular consisting of, polyamide 12 and Polyamide 6 and in particular polyamide 66, in particular obtained by coating, in particular spraying, with copolyamide powder, in particular a predetermined particle distribution, in particular comprising grain sizes 0 to 0.63 mm2, in particular particle size distribution according to D ISO 13322 12, which is in particular designed to be statically chargeable, on an oppositely chargeable surface, in particular heated to a melting temperature of about 80 ° to about 130 °, and / or in particular with subsequent heating to a temperature after coating, in particular spraying, with the copolyamide powder
BESTATIGUNGSKOPIE von etwa 80° bis etwa 130°, wobei die Beschichtung insbesondere umfasst, insbe- sondere besteht aus, Caprolactam und Laurinlactam und/oder 12- Aminodeodecansäure, und insbesondere mindestens zwei Dicarbonsäuren. CONFIRMATION COPY from about 80 ° to about 130 °, the coating in particular comprising, in particular consisting of, caprolactam and laurolactam and / or 12-aminodeodecanoic acid, and in particular at least two dicarboxylic acids.
Die Erfindung bildet eine sehr stabile, dichte und temperaturbeständige Oberflächen- beschichtung, besonders geeignet als Isolationsbeschichtung, insbesondere für Me- talle. Die Erfindung ist weiterhin gut wärmeableitend, so dass es bei Temperaturbe- lastungen ausgleichend wirkt. Je nach Auftragsdicke wird leicht eine geschlossene und homogene Oberfläche erreicht. Die Beschichtung weist einen hohen Durch- schlagswiderstand gegen Spannung auf, insbesondere geeignet als elektrotechni- sche Isolationsbeschichtung für Kühlelemente und/oder Wärmeelemente und/oder Energiespeichergehäuse und/oder Ummantelungen und/oder Trennungen, für Spei- chermedien und/oder Antriebssysteme. The invention forms a very stable, dense and temperature-resistant surface coating, particularly suitable as an insulation coating, in particular for metals. The invention is also good at dissipating heat, so that it has a balancing effect in the event of temperature loads. Depending on the thickness of the application, a closed and homogeneous surface is easily achieved. The coating has a high breakdown resistance to voltage, particularly suitable as an electrotechnical insulation coating for cooling elements and / or heating elements and / or energy storage housings and / or casings and / or separations, for storage media and / or drive systems.
Als Bestandteile ist vorteilhaft Caprolactam als Polyamid 12, 6, 66-Gemisch mit Korngrößen zwischen 0-0,63 mm2, Partikelgröße D Iso 13322 12 my, mv 160°C Durch die verwendete Beschichtung ist ein tiefer Schmelzpunkt und eine sehr gute chemische Beständigkeit gegeben. Caprolactam, genauer e-Caprolactam, ist der Ausgangsstoff für die ringöffnende Polymerisation von Polyamid 6 (Perlon). Obwohl bei dieser Reaktion kein Spaltprodukt entsteht, wird sie häufig oft als Polykondensa- tion bezeichnet. Caprolactam as a polyamide 12, 6, 66 mixture with grain sizes between 0-0.63 mm 2 , particle size D Iso 13322 12 my, mv 160 ° C is advantageous as a component. The coating used has a low melting point and very good chemical resistance given. Caprolactam, more precisely e-caprolactam, is the starting material for the ring-opening polymerization of polyamide 6 (Perlon). Although no cleavage product is formed in this reaction, it is often referred to as polycondensation.
Für das Erreichen des tiefen Schmelzpunktes können vorteilhaft mindestens zwei Dicarbonsäuren als Komponenten des Polyamides eingesetzt werden, wobei auch ein Teil der gängigen alphatischen Dicarbonsäuren durch aromatische Verbindungen substituiert werden kann. Allerdings sollte der Anteil der aromatischen Disäure(n) vorteilhaft nicht größer als 10 Mol-% bezogen auf die Gesamtrezeptur sein, da bei einer weiteren Erhöhung des aromatischen Anteils Zusammensetzungen entstehen, die nicht mehr kristallisieren und vollständig amorph bleiben. To achieve the low melting point, at least two dicarboxylic acids can advantageously be used as components of the polyamide, and some of the common alphatic dicarboxylic acids can also be substituted by aromatic compounds. However, the proportion of the aromatic diacid (s) should advantageously not be greater than 10 mol% based on the total formulation, since a further increase in the aromatic proportion results in compositions which no longer crystallize and remain completely amorphous.
Vorteilhaft ist es, wenn das Copolyamidpulver umfasst: It is advantageous if the copolyamide powder comprises:
- Caprolactam/w -Aminocarpronsäure mit etwa 10-45 Mol-%, - Laurinlactann/w -Aminolaurinsäure, und/oder 12-Aminodeodecansäure mit etwa 30- 55 Mol-% - Caprolactam / w -aminocarpronic acid with about 10-45 mol%, - Laurolactann / w -aminolauric acid, and / or 12-aminodeodecanoic acid with about 30-55 mol%
- mindestens zwei Dicarbonsäuren mit etwa 20-50 Mol-%. - At least two dicarboxylic acids with about 20-50 mol%.
Vorteilhaft ist es, wenn weiterhin eine aliphatische a,w-Dicarbonsäure mit 6 bis ein- schließlich 14 C-Atomen, insbesondere Terephthalsäure und/oder Isophtalsäure und/oder 2,6-Nnaphthalindicarbonsäure vorgesehen ist, wobei der Anteil an aromati- schen Dicarbonsäuren kleiner als etwa 10-Mol% ist, bezogen auf die Gesamtmenge der Komponenten, die sich auf 100 Mol-% ergänzen. It is advantageous if an aliphatic α, w-dicarboxylic acid with 6 to 14 carbon atoms, in particular terephthalic acid and / or isophthalic acid and / or 2,6-naphthalenedicarboxylic acid, is provided, the proportion of aromatic dicarboxylic acids being smaller than about 10 mol%, based on the total amount of components making up 100 mol%.
Vorteilhaft ist es, wenn im Copolyamidfeinpulver zu den Dicarbonsäuren eine äqui- molare Menge eines Diamingemisches vorgesehen ist, ausgewählt aus einer Gruppe aus den folgenden Substanzen: Hexamethylendiamin, Piperazin und/oder 2-Methyl- 1 ,5 diaminopentan, wobei der molare Anteil an Hexamethylendiamin, bezogen auf das Diamingemisch, zwischen etwa 75 und etwa 95 Mol-% beträgt. It is advantageous if an equimolar amount of a diamine mixture is provided in the copolyamide fine powder to the dicarboxylic acids, selected from a group of the following substances: hexamethylenediamine, piperazine and / or 2-methyl-1,5 diaminopentane, the molar proportion being hexamethylenediamine , based on the diamine mixture, is between about 75 and about 95 mol%.
Vorteilhaft ist es, wenn die Copoiyamidpulverzusammensetzung umfasst It is advantageous if the copolyamide powder composition comprises
Caprolactam mit etwa 12.5-35wt.%, Laurinlactam mit etwa 40-65wt.%, Adipinsäure mit etwa 0-20wt%, Hexamethylendiamin mit etwa 0-20 wt%. Caprolactam with about 12.5-35% by weight, laurolactam with about 40-65% by weight, adipic acid with about 0-20% by weight, hexamethylenediamine with about 0-20% by weight.
Vorteilhaft ist es, wenn die Copolyamidpulverzusammensetzung umfasst Capro- lactam/w -Aminocarpronsäure und Laurinlactam/w -Aminolaurinsäure weitere w- Aminocarbonsäuren und weitere Polyamidbildner wie 6-Salz, 6.6-Salz und 6 12-Salz. Durch die Komponenten ist ein niedrig schmelzendes Copolyamide erhältlich, insbe- sondere eine Einstellung einer erwünschtenSchmelztemperatur von etwa 80°-130°. It is advantageous if the copolyamide powder composition comprises caprolactam / w-aminocarpronic acid and laurolactam / w-aminolauric acid, further w-aminocarboxylic acids and further polyamide formers such as 6-salt, 6,6-salt and 6 12-salt. The components make it possible to obtain a low-melting copolyamide, in particular a setting of a desired melting temperature of approximately 80 ° -130 °.
Vorteilhaft ist es, wenn vor der Beschichtung mit Copolyamidpulver vorzunehmen ist a) Oberflächenbearbeiten durch mechanisches Bestrahlen, insbesondere mit Glasperlen, It is advantageous if, before coating with copolyamide powder, a) surface treatment by mechanical irradiation, in particular with glass beads,
b) Entfetten mit Eisenphosphatlösung bei Eisenmetallen und/oder b) Degreasing with iron phosphate solution for ferrous metals and / or
Behandeln mit Zirkoniumlösung bei NE-Metallen, Treatment with zirconium solution for non-ferrous metals,
c) weiterhin anschließend an die Beschichtung mit Copolyamidpulver insbesondere eine weitere Überbeschichtung mit Polyester- oder Epoxy-Polyesterpulver. Die Aufgabe wird ebenfalls gelöst durch eine Verwendung einer beschichteten Ober- fläche nach einem der Ansprüche 1 bis 7 für elektrotechnische Isoiierbeschichtungen für Metalle, insbesondere für metallische Akkumulatorenkästen als Beschichtung mit hohem Durchschlagswiderstand gegen Spannung und/oder elektrotechnische Isola- tionsbeschichtung für Kühlelemente und/oder Wärmeelemente und/oder Energie- speichergehäuse und/oder Ummantelungen und/oder Trennungen, für Speicherme- dien und Antriebssysteme. c) furthermore, following the coating with copolyamide powder, in particular a further overcoating with polyester or epoxy polyester powder. The object is also achieved by using a coated surface according to one of claims 1 to 7 for electrotechnical insulating coatings for metals, in particular for metal battery boxes as a coating with high breakdown resistance to voltage and / or electrotechnical insulating coating for cooling elements and / or heating elements and / or energy storage housings and / or casings and / or partitions for storage media and drive systems.
Die Aufgabe wird ebenfalls gelöst durch ein Verfahren zum Herstellen einer Oberflä- chenbeschichtung für eine elektrotechnischen Isolationsbeschichtung auf eine Me- talloberfläche, insbesondere Aluminium und/oder Stahl und/oder Nichteisenmetalle und/oder Eisenmetalle, nach einem der Ansprüche 1 bis 7, insbesondere zur Ver- wendung für elektrotechnische Isoiierbeschichtungen, insbesondere nach Anspruch 8, wobei zunächst The object is also achieved by a method for producing a surface coating for an electrotechnical insulation coating on a metal surface, in particular aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, according to one of claims 1 to 7, in particular for ver - Use for electrotechnical insulating coatings, in particular according to claim 8, wherein initially
a) eine Oberflächenbearbeitung durch Strahlen, insbesondere mittels Glasperlen vorgenommen wird, a) surface treatment is carried out by blasting, in particular by means of glass beads,
b) anschließend ein Entfetten der entstandenen Oberfläche mittels Eisenphos- phat bei Eisenmetallen und/oder anschließend eine Behandlung mit Zirkoniumlösung bei NE Metallen erfolgt, b) the resulting surface is then degreased using iron phosphate in the case of ferrous metals and / or subsequently a treatment with zirconium solution in the case of non-ferrous metals,
c) anschließend ein Aufbringen von Copolyamidfeinpulver, umfassend Poly- amid 12. c) then an application of copolyamide fine powder, comprising polyamide 12.
Zur Vorbehandlung erfolgt somit vorteilhaft ein Strahlen der Oberfläche, wobei als Strahlmittel Glasperlen vorteilhaft geeignet sind, insbesondere Glasperlen mit Nat- ronglas, insbesondere nach DIN 52 900, verursachen beim Strahlen keine Fremdab- lagerung und keine Korrosion auf der behandelten Oberfläche. Es besteht aus mik- roskopisch kleinen runden Glasperlen aus hartelastischem Natronglas. Die Korngrö- ße der Glasperlen wird auf die jeweiligen Untergründe abgestimmt. The surface is therefore advantageously blasted for pretreatment, with glass beads being advantageously suitable as blasting media, in particular glass beads with soda glass, in particular according to DIN 52 900, do not cause any foreign deposits or corrosion on the treated surface during blasting. It consists of microscopic round glass beads made of hard-elastic soda glass. The grain size of the glass beads is matched to the respective substrate.
Eine Reinigung erfolgt vorteilhaft anschließend mit einer Eisenphosphatierung, wobei bei der Phosphatierung mit einer Lösung aus Phosphorsäureester und für die zur Anwendungen passenden Zusatzstoffen behandelt wird. Durch den Einsatz der Ei- senphosphatierung wird das Werkstück entfettet, beim Einsatz auf Stahl- und Eisent- eilen bildet sich eine Konversionsschicht aus, die ein Optimum an Haftgrund für die anschließende Beschichtung darstellt. A cleaning is then advantageously carried out with iron phosphating, the phosphating with a solution of phosphoric acid ester and for the Applications suitable additives is treated. By using iron phosphating, the workpiece is degreased; when used on steel and iron parts, a conversion layer is formed, which represents an optimal primer for the subsequent coating.
Anschließend erfolgt vorteilhaft eine zirkoniumbasierte Passivierung, bei der auf Zir- koniumbasis eine Zirkoniumoxydschicht aufgebaut: Diese Passivierungsschicht dient einer Haftungsverbesserung auf NE- und FE-Metallen, Bestandteile: Hexafluorozir- koniumsäure 45%. This is followed by a zirconium-based passivation, in which a zirconium oxide layer is built up on the zirconium basis: This passivation layer serves to improve the adhesion to non-ferrous and ferrous metals, components: hexafluorozirconic acid 45%.
Die nachfolgende Beschichtung kann mittels Aufheizen des Werkstücks auf eine Pul- verschmelztemperatur erfolgen und anschließend im manuellen elektrostatischen Sprühverfahren aufgebracht werden. Dieses Verfahren eignet sich bei Bauteilen mit geringer Materialstärke. The subsequent coating can be carried out by heating the workpiece to a powder melting temperature and then applied using the manual electrostatic spraying process. This method is suitable for components with a low material thickness.
In einem anderen Verfahren wird das Werkstück so lange aufgeheizt, bis der Schmelzpunkt der Pulverbeschichtung erreicht wird und eine geschlossene, homo- gene Oberfläche erreicht wird. Bei beiden Verfahren ist das Ziel, eine geschlossene und homogene Oberfläche zu erreichen, es sollte eine Mindestschichtstärke aufge- bracht werden. In another process, the workpiece is heated up until the melting point of the powder coating is reached and a closed, homogeneous surface is achieved. The aim of both methods is to achieve a closed and homogeneous surface; a minimum layer thickness should be applied.
Vorteilhaft ist es, wenn das Copolyamidfeinpulver statisch aufgeladen aufgebracht wird, auf eine gegengesetzt aufgeladene Metalloberfläche insbesondere mit vorheri- ger und/oder anschließender Temperaturbehandlung. It is advantageous if the fine copolyamide powder is applied statically charged, to an oppositely charged metal surface, in particular with prior and / or subsequent temperature treatment.
Copolyamidfeinpulver wird vorteilhaft statisch aufgeladen und auf der gegengesetzt aufgeladenen Oberfläche aufgebracht. Dieses ist gleichmäßiger verteilt und als fei- nes Pulver besser schmelzbar als gröberes Pulver. AnschlueOend kann zur Oberflä- chenabdeckung oder dekorativem Finish noch eine Polyesterbeschichtung aufge- bracht werden. Außerdem dient diese Überbeschichtung dem Schutz der Isolations- schicht und dient der farblichen Gestaltung bzw. Kennzeichnung der Werkstücke. Die Überbeschichtung der Copolyamidbeschichtung erfolgt vorteilhaft mittels der elektro- statischen Applikation von Polyester- oder Epoxy-Polyesterpulver, sie wird nach dem Verschmelzen und Erkalten der Isolationsschicht aufgebracht und durch das Ein- brennen verfestigt. Copolyamide fine powder is advantageously statically charged and applied to the oppositely charged surface. This is more evenly distributed and, as a fine powder, can be melted better than a coarse powder. A polyester coating can then be applied to cover the surface or create a decorative finish. In addition, this overcoating serves to protect the insulation layer and is used to color or mark the workpieces. The overcoating of the copolyamide coating is advantageously carried out by means of the electrical static application of polyester or epoxy-polyester powder; it is applied after the insulation layer has fused and cooled down and solidified by baking.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachstehenden Beschreibung, in der Ausführungsbeispiele des Gegenstands der Erfindung näher erläutert sind. Further features and advantages of the invention emerge from the claims and the following description, in which exemplary embodiments of the subject matter of the invention are explained in more detail.
Der Schmelzbereich einer vorteilhaft erfindungsgemäß vorgesehenen Beschichtung mit Copolyamiden nach ISO 11537 DSC, 20 K/min liegt etwa bei 120-130 °C. The melting range of a coating advantageously provided according to the invention with copolyamides according to ISO 11537 DSC, 20 K / min is approximately 120-130 ° C.
Die sich ergebenden Eigenschaften sind insbesondere: The resulting properties are in particular:
Glasumwandlungstemperatur (ISO 11537 DSC, 20 K/min ) [°C] 17Glass transition temperature (ISO 11537 DSC, 20 K / min) [° C] 17
Relative Viskosität in 0,5% m-cresol 1.45-1.49Relative viscosity in 0.5% m-cresol 1.45-1.49
Dichte ISO 1183 [g/cm3] 1.05Density ISO 1183 [g / cm 3 ] 1.05
Chemische Reinigungsbeständigkeit sehr gut Chemical cleaning resistance very good
Waschbeständigkeit [°C] 95 Wash resistance [° C] 95
Analyse: Analysis:
Wasser % 0.08 Water% 0.08
Die Feinpulverzusammensetzung des Copolyamidpulvers in der Beschichtung ist vorteilhaft: The fine powder composition of the copolyamide powder in the coating is advantageous:
Partikelgrösse D 10 ISO 13322 mm 12 Partikelgrösse D 50 ISO 13322 mm 34 Partikelgrösse D 95 ISO 13322 mm 58 MVR (160°C / 2,16kg) ISO 1133 ml/10 min 23 Schmelzviskosität ISO 1133 Pa*s 460 Particle size D 10 ISO 13322 mm 12 Particle size D 50 ISO 13322 mm 34 Particle size D 95 ISO 13322 mm 58 MVR (160 ° C / 2.16kg) ISO 1133 ml / 10 min 23 Melt viscosity ISO 1133 Pa * s 460

Claims

ANSPRÜCHE EXPECTATIONS
1. Beschichtete Oberfläche, insbesondere Metallmaterialoberfläche, insbesonde- re Metall umfassend Aluminium und/oder Stahl und/oder Nichteisenmetalle und/oder Eisenmetalle, wobei die Beschichtung mit vorbestimmter Zusammensetzung ausge- bildet ist, umfassend, insbesondere bestehend aus, 1. Coated surface, in particular metal material surface, in particular metal comprising aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, the coating being formed with a predetermined composition, comprising, in particular consisting of,
- Polyamid 12 und - polyamide 12 and
- Polyamid 6 und - polyamide 6 and
insbesondere Polyamid 66, especially polyamide 66,
insbesondere erhalten durch Beschichten, insbesondere Besprühen, mit Copoly- amidpulver, insbesondere einer vorbestimmten Partikelverteilung, insbesondere um- fassend Korngrößen 0 bis 0,63 mm2, insbesondere Partikelgrößenverteilung nach D Iso 13322 12, das insbesondere statisch aufladbar ausgebildet ist, auf einer gegen- gesetzt aufladbaren, insbesondere auf eine Schmelztemperatur von etwa 80° bis etwa 130° erwärmten Oberfläche und/oder insbesondere mit einem nach dem Be- schichten, insbesondere Besprühen, mit dem Copolyamidpulver nachträglichem Er- wärmen auf eine Temperatur von etwa 80° bis etwa 130°, in particular obtained by coating, in particular spraying, with copolyamide powder, in particular a predetermined particle distribution, in particular comprising grain sizes 0 to 0.63 mm 2, in particular particle size distribution according to D ISO 13322 12, which is in particular designed to be statically chargeable, on a counter chargeable surface, in particular heated to a melting temperature of approximately 80 ° to approximately 130 ° and / or in particular with subsequent heating to a temperature of approximately 80 ° to approximately 130 ° with the copolyamide powder after coating, in particular spraying,
wobei die Beschichtung insbesondere umfasst, insbesondere besteht aus, wherein the coating in particular comprises, in particular consists of,
- Caprolactam und - caprolactam and
- Laurinlactam und/oder 12-Aminodeodecansäure, - laurolactam and / or 12-aminodeodecanoic acid,
- und insbesondere mindestens zwei Dicarbonsäuren. - and in particular at least two dicarboxylic acids.
2. Oberfläche nach Anspruch 1 , dadurch gekennzeichnet, dass das Copoly- amidpulver umfasst: 2 . Surface according to claim 1, characterized in that the copolyamide powder comprises:
- Caprolactam/w -Aminocarpronsäure mit etwa 10-45 Mol-%, - Caprolactam / w -aminocarpronic acid with about 10-45 mol%,
- Laurinlactam/w -Aminolaurinsäure, und/oder 12-Aminodeodecansäure mit etwa 30- 55 Mol-% - Laurolactam / w -aminolauric acid, and / or 12-aminodeodecanoic acid with about 30-55 mol%
- mindestens zwei Dicarbonsäuren mit etwa 20-50 Mol-%. - At least two dicarboxylic acids with about 20-50 mol%.
3. Oberfläche nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass weiterhin eine aliphatische a,w-Dicarbonsäure mit 6 bis einschließlich 14 C-Atomen, insbeson- dere Terephthalsäure und/oder Isophtalsäure und/oder 2,6-Nnaphthalindicarbon- säure vorgesehen ist, wobei der Anteil an aromatischen Dicarbonsäuren kleiner als etwa 10-Mol% ist, bezogen auf die Gesamtmenge der Komponenten, die sich auf 100 Mol-% ergänzen. 3. Surface according to claim 1 or 2, characterized in that an aliphatic α, w-dicarboxylic acid with 6 to 14 C atoms inclusive, in particular terephthalic acid and / or isophthalic acid and / or 2,6-naphthalenedicarboxylic acid, is provided , the proportion of aromatic dicarboxylic acids being less than about 10 mol%, based on the total amount of the components, which make up 100 mol%.
4. Oberfläche nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass im Copolyamidfeinpulver zu den Dicarbonsäuren eine äquimolare Menge eines Dia- mingemisches vorgesehen ist, ausgewählt aus einer Gruppe aus den folgenden Substanzen: Hexamethylendiamin, Piperazin und/oder 2-Methyl-1 ,5 diaminopentan, wobei der molare Anteil an Hexamethylendiamin, bezogen auf das Diamingemisch, zwischen etwa 75 und etwa 95 Mol-% beträgt. 4. Surface according to one of claims 1 to 3, characterized in that an equimolar amount of a diamine mixture is provided in the fine copolyamide powder to the dicarboxylic acids, selected from a group of the following substances: hexamethylenediamine, piperazine and / or 2-methyl-1 , 5 diaminopentane, the molar proportion of hexamethylenediamine, based on the diamine mixture, being between about 75 and about 95 mol%.
5. Oberfläche nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass die Copoly- amidpulverzusammensetzung umfasst 5. Surface according to claim 1 to 4, characterized in that the copolyamide powder composition comprises
- Caprolactam mit etwa 12.5-35wt.%, - Caprolactam with about 12.5-35 wt.%,
- Laurinlactam mit etwa 40-65wt.%, - Laurinlactam with about 40-65wt.%,
- Adipinsäuremit etwa 0-20wt%, - adipic acid with about 0-20% by weight,
- Hexamethylendiamin mit etwa 0-20 - Hexamethylenediamine with about 0-20
wt%. wt%.
6. Oberfläche nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass die Copoly- amidpulverzusammensetzung umfasst 6. Surface according to claim 1 to 5, characterized in that the copolyamide powder composition comprises
- Caprolactam/w)-Aminocarpronsäure und - Caprolactam / w) aminocarpronic acid and
- Laurinlactam/w)-Aminolaurinsäure - Laurolactam / w) -aminolauric acid
- weitere w-Aminocarbonsäuren und - Other w-aminocarboxylic acids and
- weitere Polyamidbildner wie 6-Salz, - other polyamide formers such as 6-salt,
6.6-Salz und 6.12-Salz. 6.6 salt and 6.12 salt.
7. Oberfläche nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass vor der Be- schichtung mit Copolyamidpulver vorzunehmen ist a) Oberflächenbearbeiten durch mechanisches Bestrahlen, insbesondere mit Glasperlen, 7. Surface according to claim 1 to 6, characterized in that it is to be carried out with copolyamide powder prior to coating a) Surface treatment by mechanical radiation, especially with glass beads,
b) Entfetten mit Eisenphosphatlösung bei Eisenmetallen und/oder b) Degreasing with iron phosphate solution for ferrous metals and / or
Behandeln mit Zirkoniumlösung bei NE-Metallen, Treatment with zirconium solution for non-ferrous metals,
c) weiterhin anschließend an die Beschichtung mit Copolyamidpulver c) continue to be coated with copolyamide powder
insbesondere eine weitere Überbeschichtung mit Polyester- oder Epoxy- Polyesterpulver. especially a further overcoating with polyester or epoxy polyester powder.
8. Verwendung einer beschichteten Oberfläche nach einem der Ansprüche 1 bis 7 für elektrotechnische Isolierbeschichtungen für Metalle, insbesondere für metalli- sche Akkumulatorenkästen als Beschichtung mit hohem Durchschlagswiderstand gegen Spannung und/oder elektrotechnische Isolationsbeschichtung für Kühlelemen- te und/oder Wärmeelemente und/oder Energiespeichergehäuse und/oder Ummante- lungen und/oder Trennungen, für Speichermedien und Antriebssysteme. 8. Use of a coated surface according to one of claims 1 to 7 for electrotechnical insulating coatings for metals, in particular for metallic accumulator boxes as a coating with high breakdown resistance to voltage and / or electrotechnical insulating coating for cooling elements and / or heating elements and / or energy storage housings and / or sheathing and / or partitions for storage media and drive systems.
9. Verfahren zum Herstellen einer Oberflächenbeschichtung für eine elektrotech- nischen Isoiationsbeschichtung auf eine Metalloberfläche, insbesondere Aluminium und/oder Stahl und/oder Nichteisenmetalle und/oder Eisenmetalle, nach einem der Ansprüche 1 bis 7, insbesondere zur Verwendung für elektrotechnische Isolierbe- schichtungen, insbesondere nach Anspruch 8, wobei zunächst 9. A method for producing a surface coating for an electrotechnical insulation coating on a metal surface, in particular aluminum and / or steel and / or non-ferrous metals and / or ferrous metals, according to one of claims 1 to 7, in particular for use for electrotechnical insulating coatings, in particular according to claim 8, wherein initially
a) eine Oberflächenbearbeitung durch Strahlen, insbesondere mittels Glasperlen vorgenommen wird, a) surface treatment is carried out by blasting, in particular by means of glass beads,
b) anschließend ein Entfetten der entstandenen Oberfläche mittels Eisenphos- phat bei Eisenmetallen und/oder anschließend eine Behandlung mit Zirkoniumiösung bei NE Metallen erfolgt, b) the resulting surface is then degreased using iron phosphate for ferrous metals and / or then a treatment with zirconium solution for non-ferrous metals,
c) anschließend ein Aufbringen von Copolyamidfeinpulver, umfassend Poly- amid12. c) then an application of copolyamide fine powder, comprising polyamide12.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass das Copolyamid- feinpulver statisch aufgeladen aufgebracht wird, auf eine gegengesetzt aufgeladene Metalloberfläche insbesondere mit vorheriger und/oder anschließender Temperatur- behandlung. 10. The method according to claim 9, characterized in that the copolyamide fine powder is applied statically charged, to an oppositely charged metal surface, in particular with prior and / or subsequent temperature treatment.
PCT/DE2019/000221 2019-05-22 2019-08-14 Coated surface, use and method WO2020233731A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2324159A1 (en) * 1973-05-12 1974-11-28 Plate Bonn Gmbh COPOLYAMIDE CONTAINING CAPROLACTAM, LAURINLACTAM AND ADIPIC HEXAMETHYLENEDIAMINE
EP0030589A2 (en) * 1979-12-06 1981-06-24 Chemische Werke Hüls Ag Use of copolyether-ester amides as melt adhesives for the hot-bonding of textiles
DE3730504C1 (en) * 1987-09-11 1989-03-16 Atochem Werke Gmbh Copolyamides containing caprolactam and laurolactam, process for the preparation thereof and use thereof for heat-sealing textiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2324159A1 (en) * 1973-05-12 1974-11-28 Plate Bonn Gmbh COPOLYAMIDE CONTAINING CAPROLACTAM, LAURINLACTAM AND ADIPIC HEXAMETHYLENEDIAMINE
EP0030589A2 (en) * 1979-12-06 1981-06-24 Chemische Werke Hüls Ag Use of copolyether-ester amides as melt adhesives for the hot-bonding of textiles
DE3730504C1 (en) * 1987-09-11 1989-03-16 Atochem Werke Gmbh Copolyamides containing caprolactam and laurolactam, process for the preparation thereof and use thereof for heat-sealing textiles

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