WO2001017694A2 - Glas- und polycarbonatbeschichtung - Google Patents
Glas- und polycarbonatbeschichtung Download PDFInfo
- Publication number
- WO2001017694A2 WO2001017694A2 PCT/DE2000/002989 DE0002989W WO0117694A2 WO 2001017694 A2 WO2001017694 A2 WO 2001017694A2 DE 0002989 W DE0002989 W DE 0002989W WO 0117694 A2 WO0117694 A2 WO 0117694A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating
- substance
- stochastic
- structured
- structuring
- Prior art date
Links
Classifications
-
- 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
- B05D1/60—Deposition of organic layers from vapour phase
-
- 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
- B05D1/08—Flame spraying
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/002—Thermal treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/002—Provisions for preventing vegetational growth, e.g. fungi, algae or moss
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/31—Pre-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
Definitions
- the present invention relates to the preambles of the independent claims.
- the present invention is concerned with the coating of surfaces.
- surfaces can be coated hydrophobically and / or oleophobically. It has already been proposed to apply a fluorine coating of perfluorinated compounds to the surface of an object. It has also been proposed to provide the surface with fine regular microstructures, to which in turn a hydrophobic and / or oleophobic coating is applied, in particular to the tips of the microstructure. Such a method is described in particular in WO 96/04123.
- a first disadvantage of the method known from it is that the regular structuring of the surface provided there is complicated. Another disadvantage is that the known self-cleaning surfaces are typically matt and in particular it is not possible to achieve transparency to the desired extent. In particular, at the time of registration of the present invention, it was not possible to make window panes transparent in a self-cleaning manner.
- the object of the present invention is to provide something new for commercial use.
- the invention thus first proposes a method for changing the surface property of an object, the surface of which is structured and the structured surface is coated in order to change the surface properties, it being provided that a stochastic surface structure is provided and a coating is applied which has a contact angle of more than 65 ° to water and / or oils and / or a surface energy less than 35 mJ / m 2 .
- the coating described is hydrophobic and / or oleophobic, as the contact angle, ie contact angle with water and / or oils of over 65 ° shows.
- the surface properties change in such a way that a self-cleaning effect occurs, ie any dirt that is applied, as far as it can still stick, is removed with water or the like without mechanical rubbing or the like.
- a first surprising basic knowledge of the present invention thus consists in the fact that a substantial change in the surface properties, in particular self-cleaning, can also be achieved if the surface structures which are coated are not strictly periodic and / or within very narrowly specified tolerance limits - will be maintained, but that positive effects can also be generated with a stochastic surface structure.
- a particular advantage is that a clear, non-matt, in particular transparent and / or colorless coating can be produced in this way, which is also self-cleaning.
- the object can be manufactured with a stochastic surface.
- a first variant consists in applying a UV-crosslinkable substance to an object and creating a partial crosslinking. The areas that have not been UV-hardened can then be etched away and / or removed in another way.
- the surface is exposed to a stream of material in order to produce the structuring.
- the material jet can on the one hand have an abrasive structuring effect, for example like a sandblast or a shot peening.
- the material beam can apply structuring material in a stochastic manner. It is possible and preferred for certain applications to treat the surface to improve adhesion during or before the stochastic application of material. Further it can it is likely to apply material stochastically to an object that has been preheated at least on the surface.
- the object can be treated while still warm during the manufacturing process.
- the stochastic deposition can take place on the one hand by vapor deposition, CVD, PECVD and other vapor deposition methods and / or by sputtering.
- a reactive fluid flow in particular by flame treatment with a reactive gas flame.
- Propane, butane or natural gas is used as the flame gas in preferred processes.
- Formers of organic structures can be added to this flame gas.
- hydrogen can also be used as the flame gas. This allows flame temperatures around 2,000 ° C.
- the use of other flammable gases such as acetylene etc. is also conceivable.
- the inorganic structuring agent before the combustion. This can be done, for example, by bubbling the flame gas through an appropriate solution or by using a gaseous or low-boiling inorganic structuring agent which is mixed with the possibly liquid or liquefied flame gas.
- the inorganic structuring agent m can be mixed into the flame, in particular dusted.
- the inorganic structure former can be processed as a very thin powder, in particular nanopowder.
- a preferred material for the inorganic structure Formers are silicon compounds, in particular silanes, in particular alkoxysilanes, siloxanes. It is possible, in turn, to add additives to such structure formers which soften or melt the inorganic structure formers at lower temperatures and / or change the properties of the surface structure, for example increasing the hardness and / or abrasion resistance.
- boron-containing, titanium-containing, alkali-containing and / or zirconium-containing substances are suitable as additional substances for the inorganic structuring agents.
- the material applied in a stochastically structured manner, flamed in the particularly preferred method is compacted after it has been applied, or, in the case of a heated object, is compressed during its application and until it cools, which is achieved in particular thermally by heating to a temperature, in particular below the Melting or softening point can take place.
- the compression or thermal aftertreatment of the structuring material leads in particular to an increase in the abrasion resistance. This is not yet fully understood; however, it is assumed that the thermal aftertreatment leads to a rounding off of the structure tips. This is indicated by the fact that particularly good post-treatment results can be achieved by post-flame treatment with a flame which is mixed with little or no inorganic structuring agent.
- the material can be heated in an oven, but also by irradiation with electromagnetic radiation, in particular by means of infrared and / or UV light or, preferably, pulsed lasers.
- electromagnetic radiation in particular by means of infrared and / or UV light or, preferably, pulsed lasers.
- sufficient porosity can be provided in another way, for example in the case of ceramic bodies by applying a pre-fired, ground ceramic mass to a still green body.
- substances such as wood flour that can be burned out in the manufacture of ceramic bodies, for example, the material that burns out leaving the pores behind.
- suitable porous materials include aerogels.
- the material with the object to which it is applied can be heated together in further object production steps for densification. It is therefore in particular not necessary to carry out the structuring on the finished article.
- a particularly relevant example for the structuring of an object that has not yet been completely completed is, for example, the production of flat glass, in particular of toughened safety glass.
- the structuring material in a hardening and / or adhesion-promoting atmosphere.
- an ammonia, boric acid, Hydrogen fluoride and / or sodium-containing atmosphere can be used.
- the structures are typically formed in stochastic patterns distributed over the surface of the object, and their height will also vary stochastically. However, it is possible to use comparatively low heights, which reduces the necessary flame times. However, it was found that when using commercial flame treatment devices such as the manual flame treatment devices, the flame treatment times given there lead to rather unsatisfactory results. A good result with regard to the flame duration can be achieved with flame durations which are approximately 2 to 4 times longer than those specified by the manufacturer of the manual flame device. The specified by the manual flame device manufacturer SurA GmbH
- Layer data according to which the layer thickness should be approximately 0.15 ⁇ m according to the method recommended there, suggests that layer thicknesses with typical maxima of 0.3-0.6 ⁇ m arise in the present case. Accordingly, these are preferred.
- plastics, metals, in particular aluminum, steel and non-ferrous metals, ceramics and / or ceramic surfaces, clay and / or glazed clay, in particular bricks and / or metal oxides, in particular silicon oxide, can be coated on semiconductors, in particular photovoltaic elements, just like glass, especially flat glass.
- the coating will preferably be selected from fluorine-containing, especially perfluorinated material. This can be applied by dipping into a solution or spraying on a solution.
- the solution is typically chosen to be very highly diluted to match the stochastic microstructure Do not emboss the surface, but also to ensure the presence of a stochastic surface roughness even after coating.
- a coating is selected which has a measurable vapor pressure at elevated temperature and which is applied by exposing the microstructured surface to vapor or vapor.
- the coating substance can, in particular, be evaporated from a heated supply and / or a heated nozzle.
- a fluorinated substance with a measurable vapor pressure to build up the coating is advantageous, irrespective of the type of application, since the measurable vapor pressure leads to a uniformity of the layer that forms during the crosslinking that takes place in the heated state; this seems to avoid that an incomplete and / or perforated coating arises due to autophobic effects.
- the substance is applied in a solvent-free manner at an elevated temperature between 200 ° C. and 300 ° C.
- elevated temperature between 250 ° C and 300 ° C is particularly advantageous.
- Many fluorinated and / or perfluorinated substances which can preferably be used for the production of coatings, start to decompose very slowly at 260 ° C to 270 ° C and therefore gradually, if at all, but a noticeable decomposition of the substance which detracts from the measurability With typical representatives in the named group of substances, the vapor pressure is destroyed only from about 320 ° C to 330 ° C.
- the temperature of the coating substance higher than that of the object. This has the advantage that the substance condenses or deposits on the colder object and thus causes the layer to build up. It is preferred if the temperature of the substance is higher than that of the object, but the temperature of the object is still so high that the substance still readily crosslinks on the object.
- Fluorosilicon compounds are preferably chosen as substances. Monomers as well as dimers or other oligomers can be used.
- Perfluoroalkylsilanes in the sense of the present application are, in particular, silanes having a group which is fluorinated several times, but not necessarily completely, and which are spaced from the Si atom via a spacer which is typically two CH 2 groups long. Attention is drawn to the compounds according to EP 0 587 667 (WO 92/21729). Oligomeric condensates of perfluoroalkylsilane monomers can be used for the substance, which are oligomerized in particular to the extent that a still measurable vapor pressure is present.
- the oligomerization is advantageous because these oligomer substances are easier to handle than monomers and still a measurable one Have vapor pressure, i.e. neither decompose due to high temperatures, nor cross-link at lower temperatures.
- the degree of oligomerization is preferably selected such that between 3 and 25, preferably between 15 and 20, monomers are oligomerized. These can still network well.
- reactive monomers can also be used. These can have their reactivity, in particular due to the presence of reactive OH groups.
- the cross-linking on the stochastic structures leads to a permanent coating, especially if they are rounded.
- hydrofluoroether as the solvent. It should be mentioned that when producing the objects from glass, where the clarity and / or the transparency and / or the gloss of the coating is particularly advantageous, other reflection properties also occur to a limited extent. In heat collectors and photovoltaic cells, this not only leads to advantages due to the high level of cleanliness, but also improves the efficiency of the device per se.Treatable, for example, are plastic foils, such as those used for traffic signs, which should remain clean despite negative influences and also should be easily recognizable and true to color despite coatings.
- Example 1 The invention is described below only by way of example using various exemplary embodiments.
- Example 1 The invention is described below only by way of example using various exemplary embodiments.
- Example 1 Example 1:
- the glass plate treated in this way is post-annealed at 500 ° C. for 8 h. With this post-tempering, the material stochastically applied by reactive gas flame is presumably compressed, which later increases the abrasion resistance.
- the glass plate is then tempered for 2 hours in a forced-air oven at 260 ° C. together with an oligomer of fluoroalkyltriethoxysilane and dimethyldiethoxysilane located in an open shell. Oligomer evaporates and strikes also on the structured surface. The vapor pressures and steaming times are chosen so that the previously selected microstructure is not completely leveled.
- Example 2 After cooling, a visually imperceptible surface coating was created, which forms contact angles of up to 165 ° against water.
- the glass plate coated in this way is used as a cover plate for a solar module and significantly reduces pollution due to the self-cleaning effect when it rains.
- Example 2
- a glass pane made of conventional window glass is flamed as in the example described above and then subjected to an ESG process (single-pane safety glass) in an industrial tempering furnace. After cooling, it is vaporized or vaporized in the manner described above with an oligomer of fluoroalkyltriethoxysilane and dimethyldiethoxysilane.
- the glass pane is visually not of an untreated one
- a polycarbonate pane is flamed with the burner flame, as described in Example 1, in such a way that the surface is not visually degraded and is provided with an invisible SiO 2 layer.
- the flamed polycarbonate pane is then immersed for 5 seconds in a dip tank which contains a 1% solution of 1H, 1H, 2H, 2H-tridecafluorooctyltrichlorosilane in gasoline.
- This is a perfluorinated compound in which a non-fluorinated spacer is present between the perfluorinated group and the Si atom.
- Such a molecular structure is particularly preferred for purposes of the invention.
- the excess gasoline is rinsed off with water. An extremely water-repellent coating is obtained.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10082633T DE10082633D2 (de) | 1999-09-02 | 2000-09-01 | Aluminiumbeschichtung |
AU76434/00A AU7643400A (en) | 1999-09-02 | 2000-09-01 | Aluminum coating |
EP00965807A EP1227894A2 (de) | 1999-09-02 | 2000-09-01 | Glas- und polycarbonatbeschichtung |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19941753A DE19941753A1 (de) | 1999-09-02 | 1999-09-02 | Verfahren und Stoffe |
DE19941753.9 | 1999-09-02 | ||
DE19945513 | 1999-09-23 | ||
DE19945513.9 | 1999-09-23 | ||
DE19946280.1 | 1999-09-27 | ||
DE19946280 | 1999-09-27 | ||
DE10018223A DE10018223A1 (de) | 1999-09-23 | 2000-04-12 | Aluminiumbeschichtung |
DE10018223.2 | 2000-04-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001017694A2 true WO2001017694A2 (de) | 2001-03-15 |
WO2001017694A3 WO2001017694A3 (de) | 2001-10-25 |
Family
ID=27437802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/002989 WO2001017694A2 (de) | 1999-09-02 | 2000-09-01 | Glas- und polycarbonatbeschichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1227894A2 (de) |
AU (1) | AU7643400A (de) |
DE (1) | DE10082633D2 (de) |
WO (1) | WO2001017694A2 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001070416A2 (de) * | 2000-03-20 | 2001-09-27 | Induflex Sondermaschinenbau | Oberfläche, verfahren zu ihrer herstellung sowie gegenstand mit der oberfläche |
US6800354B2 (en) | 2000-12-21 | 2004-10-05 | Ferro Gmbh | Substrates with a self-cleaning surface, a process for their production and their use |
US7141233B2 (en) | 1995-11-13 | 2006-11-28 | Mayo Foundation For Medical Education And Research | Radionuclide labeling of vitamin B12 and coenzymes thereof |
US7544411B2 (en) | 2001-02-10 | 2009-06-09 | Ferro Gmbh | Self-cleaning paint coating and a method and agent for producing the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4836136A (en) * | 1987-03-05 | 1989-06-06 | Minolta Camera Kabushiki Kaisha | Developer supplying member |
EP0866037B1 (de) * | 1993-11-10 | 2002-04-10 | Central Glass Company, Limited | Mehrlagiger, wasserabweisender Film und Verfahren zu dessen Herstellung auf einem Glassubstrat |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03153859A (ja) * | 1989-11-08 | 1991-07-01 | Sekisui Chem Co Ltd | 表面改質プラスチック |
-
2000
- 2000-09-01 EP EP00965807A patent/EP1227894A2/de not_active Withdrawn
- 2000-09-01 WO PCT/DE2000/002989 patent/WO2001017694A2/de not_active Application Discontinuation
- 2000-09-01 DE DE10082633T patent/DE10082633D2/de not_active Ceased
- 2000-09-01 AU AU76434/00A patent/AU7643400A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4836136A (en) * | 1987-03-05 | 1989-06-06 | Minolta Camera Kabushiki Kaisha | Developer supplying member |
EP0866037B1 (de) * | 1993-11-10 | 2002-04-10 | Central Glass Company, Limited | Mehrlagiger, wasserabweisender Film und Verfahren zu dessen Herstellung auf einem Glassubstrat |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 385 (C-0871), 27. September 1991 (1991-09-27) & JP 03 153859 A (SEKISUI CHEM CO LTD), 1. Juli 1991 (1991-07-01) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7141233B2 (en) | 1995-11-13 | 2006-11-28 | Mayo Foundation For Medical Education And Research | Radionuclide labeling of vitamin B12 and coenzymes thereof |
WO2001070416A2 (de) * | 2000-03-20 | 2001-09-27 | Induflex Sondermaschinenbau | Oberfläche, verfahren zu ihrer herstellung sowie gegenstand mit der oberfläche |
WO2001070416A3 (de) * | 2000-03-20 | 2002-03-07 | Induflex Sondermaschb | Oberfläche, verfahren zu ihrer herstellung sowie gegenstand mit der oberfläche |
US6800354B2 (en) | 2000-12-21 | 2004-10-05 | Ferro Gmbh | Substrates with a self-cleaning surface, a process for their production and their use |
US7544411B2 (en) | 2001-02-10 | 2009-06-09 | Ferro Gmbh | Self-cleaning paint coating and a method and agent for producing the same |
Also Published As
Publication number | Publication date |
---|---|
WO2001017694A3 (de) | 2001-10-25 |
AU7643400A (en) | 2001-04-10 |
EP1227894A2 (de) | 2002-08-07 |
DE10082633D2 (de) | 2001-12-13 |
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