EP1249281A2 - Surface auto-nettoyante avec une structure hydrophobe et procédé pour sa réalisation - Google Patents

Surface auto-nettoyante avec une structure hydrophobe et procédé pour sa réalisation Download PDF

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Publication number
EP1249281A2
EP1249281A2 EP02004703A EP02004703A EP1249281A2 EP 1249281 A2 EP1249281 A2 EP 1249281A2 EP 02004703 A EP02004703 A EP 02004703A EP 02004703 A EP02004703 A EP 02004703A EP 1249281 A2 EP1249281 A2 EP 1249281A2
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EP
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Prior art keywords
particles
self
cleaning
elevations
depressions
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EP02004703A
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German (de)
English (en)
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EP1249281A3 (fr
EP1249281B1 (fr
Inventor
Markus Dr. Oles
Bernhard Dr. Schleich
Edwin Dr. Nun
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Evonik Operations GmbH
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Creavis Gesellschaft fuer Technologie und Innovation mbH
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    • 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
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • 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
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/2438—Coated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/2438—Coated
    • Y10T428/24388—Silicon containing coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24405—Polymer or resin [e.g., natural or synthetic rubber, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24413—Metal or metal compound
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24421—Silicon containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259—Silicic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension

Definitions

  • the present invention relates to structured particles and the use thereof for self-cleaning surfaces and processes for their manufacture.
  • Objects with extremely difficult to wet surfaces have a number of economical ones significant features.
  • the most economically significant feature is the self-cleaning effect of difficult to wet surfaces, because the cleaning of Surface is time and cost intensive.
  • Self-cleaning surfaces are therefore of the highest quality economic interest.
  • Detention mechanisms are usually through interfacial energy parameters between the two surfaces in contact.
  • the systems try to lower their free interface energy. Lie the free interface energies between two components are inherently very low, So it can generally be assumed that the liability between these two Components is weak.
  • the relative lowering of the free is important Interfacial energy. For pairings with a high and a low interfacial energy the possibilities of interactions are very important.
  • hydrophobic materials such as perfluorinated polymers
  • hydrophobic surfaces are known.
  • a further development of these surfaces is to structure the surfaces in the ⁇ m range to the nm range.
  • US Patent 5,599,489 discloses a Process in which a surface is bombarded with particles of an appropriate size and subsequent perfluorination can be made particularly repellent.
  • Another Methods describe H. Saito et al in "Service Coatings International" 4, 1997, p. 168 ff.
  • particles of fluoropolymers are applied to metal surfaces, with a strong reduced wettability of the surfaces thus produced against water with a considerably reduced tendency to icing was found.
  • US Pat. Nos. 3,354,022 and WO 96/04123 describe further methods for lowering the Wettability of objects due to topological changes in the surfaces described.
  • artificial elevations or depressions with a height of approx. 5 up to 1 000 ⁇ m and a distance of approx. 5 to 500 ⁇ m on hydrophobic or after Structuring applied hydrophobic materials.
  • Surfaces of this type lead to a rapid drop formation, the rolling drops absorbing dirt particles and thus clean the surface.
  • EP 1 040 874 A2 describes the stamping of microstructures and claims them Use of such structures in analysis (microfluidics). A disadvantage of these structures is the insufficient mechanical stability.
  • JP 11171592 describes a water-repellent product and its production, the dirt-repellent surface is produced by a film on the treating surface is applied, the fine particles of metal oxide and the hydrolyzate a metal alkoxide or chelate. To solidify this film, the substrate, to which the film was applied are sintered at temperatures above 400 ° C. The method can therefore only be used for substrates that are also at temperatures above of 400 ° C are stable.
  • the object of the present invention was to provide particularly good self-cleaning Surfaces with structures in the nanometer range, as well as a simple process for Manufacture of such self-cleaning surfaces.
  • the present invention therefore relates to a self-cleaning surface which has a artificial, at least partially hydrophobic surface structure from surveys and Has depressions, the elevations and depressions through on the surface fixed particles are formed, which is characterized in that the particles a have fissured structure with elevations and / or depressions in the nanometer range.
  • the present invention also relates to a method for producing self-cleaning surfaces where a suitable, at least partially hydrophobic Surface structure is created by fixing particles on a surface, which is characterized in that particles, the jagged structures with elevations and / or Have depressions in the nanometer range can be used.
  • Self-cleaning surfaces are accessible through the method according to the invention Particles with a fissured structure. By using particles which have a rugged structure, surfaces are easily accessible that up to are structured in the nanometer range. In contrast to conventional methods that Use the smallest possible particles to achieve the cleaning effect in the The method according to the invention uses particles which themselves have a structure in the nanometer range have, which is why the particle size itself is less critical, since the distance between the surveys is determined not only by the particle size but also by the nanoscale structure.
  • the self-cleaning surface according to the invention which is an artificial, at least partially Has hydrophobic surface structure of elevations and depressions, the Elevations and depressions are formed by particles fixed on the surface, is characterized in that the particles have a jagged structure with elevations and / or Have depressions in the nanometer range.
  • the elevations and / or preferably have Wells on average a height of 20 to 500 nm, particularly preferably from 20 to 200 nm on.
  • the distance between the elevations or depressions on the particles is preferably less than 500 nm, very particularly preferably less than 200 nm.
  • the jagged structures with elevations and / or depressions in the nanometer range can e.g. over cavities, pores, grooves, tips and / or peaks are formed.
  • the Particles themselves have an average size of less than 50 ⁇ m, preferably of smaller size 30 ⁇ m and very particularly preferably from less than 20 ⁇ m.
  • the particles on the surface preferably have distances of 0-10 particle diameters, in particular 2-3 Particle diameter.
  • the particles can be particles in the sense of DIN 53 206.
  • the structure of such Particles can be spherical, strictly spherical, moderately aggregated, almost spherical, extremely strong be agglomerated or porous agglomerated.
  • the preferred size of the agglomerates or Aggregate is between 20 nm and 100 ⁇ m, particularly preferably between 0.2 and 30 ⁇ m.
  • the particles preferably have a BET surface area of 20 to 1000 square meters per gram.
  • the particles very particularly preferably have a BET surface area of 50 to 200 m 2 / g.
  • the particles preferably have at least one material selected from silicates, doped silicates, minerals, metal oxides, silicas, polymers and metal powders coated with silicic acid.
  • the particles very particularly preferably have pyrogenic silicas or precipitated silicas, in particular aerosils, Al 2 O 3 , SiO 2 , TiO 2 , ZrO 2, zinc powder coated with Aerosil R974, preferably with a particle size of 0.2 to 30 ⁇ m or powdery polymers such as eg cryogenically ground or spray-dried polytetrafluoroethylene (PTFE) or perfluorinated copolymers or copolymers with tetrafluoroethylene.
  • PTFE polytetrafluoroethylene
  • the particles for generating the self-cleaning surfaces preferably have in addition to the rugged structures also have hydrophobic properties.
  • the particles can themselves be hydrophobic, e.g. Particles containing PTFE, or the particles used can have been made hydrophobic.
  • the hydrophobicization of the particles can be done by a person skilled in the art known way.
  • Typical hydrophobized particles are e.g. Very fine powder like Aerosil-R 8200 (Degussa AG), which can be purchased.
  • the preferably used silicas preferably have a dibutyl phthalate adsorbtion, based on DIN 53 601, of between 100 and 350 ml / 100 g, preferably values between 250 and 350 ml / 100 g.
  • the particles are fixed on the surface.
  • the fixing can be done by a person skilled in the art known manner in a chemical or physical (mechanical).
  • the self-cleaning can Generate surface.
  • the self-cleaning surfaces according to the invention have a roll angle of less than 20 °, particularly preferably less than 10 °, the roll angle being defined such that one of the first cm height on a flat surface resting on an inclined plane Water drops roll off.
  • the progression angle and the retreat angle are above 140 °, preferably above 150 ° and have a hysteresis of less than 15 °, preferably less 10 ° on that the surfaces according to the invention have a progressive and Have retraction angles above at least 140 °, preferably above 150 °, particularly good self-cleaning surfaces become accessible.
  • the self-cleaning surfaces are semi-transparent.
  • the surfaces according to the invention can be contact-transparent, that is to say after Creating a surface according to the invention on a labeled object Lettering, depending on the size of the font, is still legible.
  • the self-cleaning surfaces according to the invention are preferably by Method according to the invention according to one of claims 9 to 16 for the production of this Surfaces.
  • This inventive method for producing self-cleaning surfaces where a suitable, at least partially hydrophobic Surface structure is created by fixing particles on the surface is characterized by the fact that, as described above, particles with fissured structures Have elevations and / or depressions in the nanometer range can be used.
  • particles which have at least one material selected from silicates or doped silicates, minerals, metal oxides, pyrogenic silicas or precipitated silicas or polymers are preferably used.
  • the particles very particularly preferably comprise silicates, pyrogenic silicas or precipitated silicas, in particular aerosils, minerals such as magadiite Al 2 O 3 , SiO 2 , TiO 2 , ZrO 2 Zn powder coated with Aerosil R 974 or powdery polymers, such as cryogenically ground or spray-dried Polytetrafluoroethylene (PTFE).
  • PTFE Polytetrafluoroethylene
  • Particles with a BET surface area of 50 to 600 m 2 / g are particularly preferably used. Particles which have a BET surface area of 50 to 200 m 2 / g are very particularly preferably used.
  • the particles for generating the self-cleaning surfaces preferably have in addition to the rugged structures also have hydrophobic properties.
  • the particles can themselves be hydrophobic, e.g. Particles containing PTFE, or the particles used can have been made hydrophobic.
  • the hydrophobicization of the particles can be done by a person skilled in the art known way.
  • Typical hydrophobized particles are e.g. Very fine powder like Aerosil R 974 or Aerosil-R 8200 (Degussa AG), which can be purchased.
  • the particles can be fixed on the surface in a manner known to those skilled in the art Done chemically or physically.
  • a chemical method of fixation e.g. the Use of a fixative can be used.
  • fixatives Adhesives, adhesion promoters or paints in question. The person skilled in the art will find more Fixing agents or chemical fixing methods.
  • particles to use which have hydrophobic properties and / or by treatment with at least one compound from the group of alkylsilanes, alkyldisilazanes, paraffins, waxes, Fluoroalkylsilanes, fatty acid esters, functionalized long chain alkane derivatives or Perfluoroalkylsilanes have hydrophobic properties.
  • the hydrophobization of particles is well known and can e.g. in the series Pigments, number 18, Degussa AG can be read.
  • the particles of the treated Surface by treatment with at least one compound from the group of Alkylsilanes e.g. are available from Sivento GmbH, alkyl disilazanes, paraffins, Waxes, fluoroalkylsilanes, fatty acid esters, functionalized long-chain alkane derivatives or Perfluoroalkylsilanes, with hydrophobic properties.
  • the treatment in that the particle-containing surface that is hydrophobized in a solution containing a water repellent such as e.g.
  • the maximum Applicable temperature is due to the softening temperatures of the substrate or substrate limited.
  • the inventive method according to at least one of claims 9 to 16 can excellent for producing self-cleaning surfaces on planar or non-planar Objects, especially on non-planar objects. This is with the conventional methods only possible to a limited extent. In particular about procedures at where prefabricated films are applied to a surface or in processes in which a structure to be created by embossing are non-planar objects, such as Sculptures, not or only partially accessible.
  • the invention can Process for the production of self-cleaning surfaces on objects with planar surfaces, e.g. Greenhouses or public transport become.
  • the use of the method according to the invention for the production of Self-cleaning surfaces on greenhouses have advantages because of the process self-cleaning surfaces e.g.
  • the method according to the invention can also be used to produce self-cleaning Surfaces on non-rigid surfaces of objects, such as e.g. Umbrellas or other surfaces that are kept flexible.
  • objects such as e.g. Umbrellas or other surfaces that are kept flexible.
  • inventive method according to at least one of claims 9 to 16 for Production of self-cleaning surfaces on flexible or inflexible walls in the Sanitary area can be used.
  • Such walls can e.g. Partitions in public Toilets, walls of shower cubicles, swimming pools or saunas, but also shower curtains (flexible wall).
  • the present invention also relates to particles which have a fissured structure with elevations and / or depressions in the nanometer range, and for Production of surfaces according to one of claims 1 to 8 are suitable.
  • these particles Preferably have elevations and / or depressions with an average height of 20 to 500 nm, preferably from 20 to 200 nm.
  • the distance is preferably Elevations and / or depressions on the particle less than 500 nm, preferably less than 200 nm.
  • the particles according to the invention can e.g. from at least one material selected from silicates, doped silicates, minerals, metal oxides, pyrogenic or Precipitated silicas, polymers and metal powders can be selected.
  • the particles can be particles in the sense of DIN 53 206.
  • the structure of such Particles can be spherical, strictly spherical, moderately aggregated, almost spherical, extremely strong be agglomerated or porous agglomerated.
  • the preferred size of the agglomerates or Aggregate is between 20 nm and 100 ⁇ m, particularly preferably between 0.2 and 30 ⁇ m.
  • the support was at a wavelength of 308 nm under nitrogen hardened. After the carrier had hardened, excess Aerosil VPR 411 was brushed off. The surface was initially characterized visually and is logged with +++. +++ means that water drops form almost completely. The roll angle was 2.4 °. The advancing and retreating angles were measured to be greater than 150 ° each. The associated Hysteresis is below 10 °.
  • Example 2 The experiment from Example 1 was repeated, particles of aluminum oxide C (Degussa AG), an aluminum oxide with a BET surface area of 100 m 2 / g, being sprayed on electrostatically.
  • the carrier had cured in accordance with Example 1 and excess particles had been brushed off
  • the hardened, brushed plate was immersed in a formulation of tridecafluorooctyltriethoxysilane in ethanol (Dynasilan 8262, Sivento GmbH) to make it hydrophobic.
  • the plate After draining excess Dynasilan 8262, the plate was annealed at a temperature of 80 ° C. The surface is classified with ++, which means that the shape of the water drops is not ideal, the roll angle is below 20 °.
  • Silica Sipernat 350 is added to the plate from Example 1 treated with the support Degussa AG spread. After 5 minutes of penetration, the treated plate under nitrogen in UV light hardened at 308 nm. Excess particles are brushed off and the The plate is then again immersed in Dynasilan 8262 and then at 80 ° C annealed. The surface is rated +++.
  • Aerosil VPR 411 Aerosil R 8200 (Degussa AG) is used, which has a BET surface area of 200 ⁇ 25 m 2 / g.
  • the evaluation of the surface is +++.
  • the roll angle has been determined to be 1.3 °.
  • Progress and retreat angles were also measured, each of which was greater than 150 °.
  • the associated hysteresis is below 10 °.
  • Example 2 The varnish from Example 1, which had already been mixed with the UV hardener, was added 10 wt .-% (based on the total weight of the paint mixture) 2- (N-ethylperfluorooctanesulfonamido) ethyl acrylate added. This mixture was again stirred for at least 60 min. This mixture was supported on a 2 mm thick PMMA plate applied in a thickness of 50 microns. The layer was left for 5 min dry. Then hydrophobicized, pyrogenic silica Aerosil as particles VPR 411 (Degussa AG) sprayed on using an electrostatic spray gun. After 3 min the carrier was cured at 308 nm wavelength under nitrogen.
  • VPR 411 Degussa AG
  • Aerosil VPR 411 After hardening excess Aerosil VPR 411 was brushed off the carrier. The characterization of the The surface was initially visual and is logged with +++. +++ means Drops of water form almost completely. The roll angle was 0.5 °. Measured progression and retreat angles were each greater than 150 °. The associated hysteresis is below 10 °.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Detergent Compositions (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silicon Compounds (AREA)
  • Catalysts (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Developing Agents For Electrophotography (AREA)
EP02004703A 2001-04-12 2002-03-01 Surface auto-nettoyante avec une structure hydrophobe et procédé pour sa réalisation Revoked EP1249281B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118345A DE10118345A1 (de) 2001-04-12 2001-04-12 Eigenschaften von Strukturbildnern für selbstreinigende Oberflächen und die Herstellung selbiger
DE10118345 2001-04-12

Publications (3)

Publication Number Publication Date
EP1249281A2 true EP1249281A2 (fr) 2002-10-16
EP1249281A3 EP1249281A3 (fr) 2003-01-02
EP1249281B1 EP1249281B1 (fr) 2007-05-16

Family

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Application Number Title Priority Date Filing Date
EP02004703A Revoked EP1249281B1 (fr) 2001-04-12 2002-03-01 Surface auto-nettoyante avec une structure hydrophobe et procédé pour sa réalisation

Country Status (8)

Country Link
US (1) US6811856B2 (fr)
EP (1) EP1249281B1 (fr)
JP (1) JP4102583B2 (fr)
AT (1) ATE362404T1 (fr)
CA (1) CA2381747C (fr)
DE (2) DE10118345A1 (fr)
DK (1) DK1249281T3 (fr)
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WO2005105324A1 (fr) * 2004-04-02 2005-11-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif muni d'une surface technique resistant aux rayures et presentant des proprietes de mouillage optimisees et procede de production dudit dispositif
DE102005037338A1 (de) * 2005-08-04 2007-02-08 Starnberger Beschichtungen Gmbh Antihaftbeschichtung, Verfahren zu dessen Herstellung und antihaftbeschichtete Substratmaterialien
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JP4102583B2 (ja) 2008-06-18
US20020150726A1 (en) 2002-10-17
DE50210148D1 (de) 2007-06-28
CA2381747C (fr) 2012-01-24
DE10118345A1 (de) 2002-10-17
EP1249281B1 (fr) 2007-05-16
CA2381747A1 (fr) 2002-10-12
US6811856B2 (en) 2004-11-02
JP2002346470A (ja) 2002-12-03
ES2286169T3 (es) 2007-12-01
DK1249281T3 (da) 2007-09-10
ATE362404T1 (de) 2007-06-15

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