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WO2011087997A1 - Revêtement de polymère fluoré pour le verre et les articles le comprenant - Google Patents

Revêtement de polymère fluoré pour le verre et les articles le comprenant Download PDF

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Publication number
WO2011087997A1
WO2011087997A1 PCT/US2011/020729 US2011020729W WO2011087997A1 WO 2011087997 A1 WO2011087997 A1 WO 2011087997A1 US 2011020729 W US2011020729 W US 2011020729W WO 2011087997 A1 WO2011087997 A1 WO 2011087997A1
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Prior art keywords
primer composition
colloidal silica
silica particles
primer
particles
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Ceased
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PCT/US2011/020729
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WO2011087997A8 (fr
Inventor
Naiyong Jing
Zhigang Yu
Chaoyu Han
Zhiliang Shen
Lisa P. Chen
Blake E. Chandler
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of WO2011087997A1 publication Critical patent/WO2011087997A1/fr
Publication of WO2011087997A8 publication Critical patent/WO2011087997A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/18—Homopolymers or copolymers of tetrafluoroethene
    • 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
    • B05D5/086—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 having an anchoring layer
    • 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
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
    • 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
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/3405—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of organic materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • 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
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B05D2203/35—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/53—Base coat plus clear coat type
    • B05D7/534—Base coat plus clear coat type the first layer being let to dry at least partially before applying the second layer
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/44—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
    • C03C2217/445—Organic continuous phases
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
    • C03C2217/47—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase consisting of a specific material
    • C03C2217/475—Inorganic materials
    • C03C2217/478—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells

Definitions

  • the present disclosure broadly relates to fluoropolymer coatings.
  • Fluoropolymers are well known to be an important family of organic materials in industry as they typically provide high thermal stability, excellent chemical resistance, good film strength, low absorption of UV and visible light at a very broad region and low energy surfaces.
  • Fluoropolymers that are perfluorinated and thermoplastic known in the art as fluoroplastics or fluorothermoplastics, are typically inert to nearly all chemicals and solvents, even at elevated temperatures and pressures, reacting only with strong reducing agents such as molten alkali metals.
  • their high crystallinity leads to relatively low gas and moisture permeability, so they act as excellent barrier resins.
  • Their low surface energies and coefficients of friction against other materials lead to the well-known anti-stick applications.
  • Their extremely low refractive indices and optical clarity make them useful in optical applications including antireflective coatings.
  • Fluoroplastic copolymers of monomers comprising tetrafluoroethylene and a perfluoro(propyl vinyl ether) are collectively known in that art by the abbreviation "PFA".
  • PFA includes copolymers of tetrafluoroethylene with a perfluoro(propyl vinyl ether) (e.g., perfluoro(methyl vinyl ether)) as well as copolymers of tetrafluoroethylene with a perfluoro(propyl vinyl ether) and one or more additional perfluorinated monomers (e.g., hexafluoropropy lene) .
  • Fluoropolymers have been used to coat glass substrates such as light bulbs for shattering prevention when light bulbs break, to coat metallic substrates for anti-stick properties (e.g., cookware, bakeware), and also for corrosion protection in industrial applications (chemical tanks, exhaust ducts).
  • anti-stick properties e.g., cookware, bakeware
  • corrosion protection in industrial applications e.g., chemical tanks, exhaust ducts
  • the present disclosure provides a primer composition comprising PFA polymer particles and colloidal silica particles dispersed in a vaporizable aqueous liquid vehicle, wherein the primer composition has a weight ratio of the colloidal silica particles to the PFA polymer particles is less than or equal to 0.6, and wherein the primer composition contains less than one part by weight of: a) non- vaporizable organic compounds having at least one C-H bond; and b) inorganic particles having a mean particle size of greater than one micrometer.
  • the weight ratio of the colloidal silica particles to the PFA polymer particles is greater than or equal to 0.3.
  • the colloidal silica particles have a mean particle size of 4 to 45 nanometers (nm) or 4 to 20 nm.
  • the primer composition consists essentially of the PFA polymer particles, the colloidal silica particles, and the vaporizable aqueous liquid vehicle.
  • the primer composition has a solids content of from one to ten percent.
  • the vaporizable aqueous liquid vehicle is free of vaporizable organic solvent.
  • the present disclosure provides an article comprising a substrate having a glass surface with a primer layer disposed on at least a portion thereof, wherein the primer layer is formed by at least partially drying a primer composition according to the present disclosure.
  • the article further comprises a fluoropolymeric layer coated on the primer layer.
  • the substrate comprises a light bulb.
  • the substrate comprises at least one of a solar cell, a mirror, a window, or a solar thermal collector.
  • the present disclosure provides a method comprising: contacting the primer composition according to the present disclosure with a glass surface of a substrate, and at least partially evaporating the vaporizable aqueous liquid vehicle to provide a primer layer.
  • the method further comprises coating a fluoropolymeric layer on the primer layer.
  • primer compositions according to the present disclosure have good adhesion to glass and good optical transparency, and may provide a suitable surface for further fluoropolymer protective coatings such as, for example, a PFA layer. Further, in typical embodiments the primer compositions are resistant to coloration due to thermal oxidation and/or light (e.g., weathering).
  • aqueous means containing more than an adventitious amount of water (e.g., at least about 1, 5, 10, or even at least about 20 percent by weight of water, or more).
  • inorganic refers to chemical compounds that are not organic; for clarity as used herein it expressly includes all elemental forms of carbon.
  • non-vaporizable means not vaporizable
  • organic refers to chemical compounds having at least one carbon- hydrogen (i.e., C-H) bond.
  • perfluoroplastic means a thermoplastic perfluoropolymer
  • perfluoropolymer means a polymer wherein all hydrogen atoms have been replaced by fluorine atoms.
  • vaporizable means evaporable at a temperature of less than 150°C at a pressure of one atmosphere (0.1 MPa).
  • Fig. 1 is a side view of an exemplary article according to the present disclosure. While the above-identified drawing figures set forth several embodiments of the present disclosure, other embodiments are also contemplated, as noted in the discussion. In all cases, this disclosure presents the disclosure by way of representation and not limitation. It should be understood that numerous other modifications and embodiments can be devised by those skilled in the art, which fall within the scope and spirit of the principles of the disclosure. The figures may not be drawn to scale. DETAILED DESCRIPTION
  • the primer composition comprises PFA particles, typically dispersed in the vaporizable aqueous liquid vehicle in latex form, although other dispersions (e.g., which may be metastable) may also be used.
  • PFA dispersions are well known; for example, as disclosed in U.S. Pat. Nos. 3,132,123 (Harris et al); 4,029,868 (Carlson); 4,078,134 (Kuhls et al); and 4,078,135 (Sulzbach et al).
  • the PFA fluoropolymer comprises 92-99.5 percent, more typically 96-99 percent of
  • Aqueous PFA dispersions are commercially available under the trade designation TEFLON PFA from E. I. du Pont de Nemours and Co. of Wilmington, DE; for example, as TE-7224, 857N-110, 857N-210, 858N-916, and 858N-917. Combinations of two or more PFA particles may be used.
  • PFA dispersions are stable over a pH range of from 1 to 11 , although other pH values may also be used.
  • the primer composition has a total PFA content of from 0.1 to 40 percent by weight, more typically 2 to 25 percent by weight based on the total weight of the primer composition, although other amounts can be used.
  • the primer composition may contain one or more additional perfluoropolymer particles.
  • additional perfluoropolymer particles include polytetrafluoroethylene particles, polyhexafluoropropylene particles, and poly(hexafluoropropylene-co-tetrafluoroethylene) (FEP) particles.
  • FEP poly(hexafluoropropylene-co-tetrafluoroethylene)
  • the optional additional perfluoropolymer particles may be provided as a latex or other type of dispersion; for example, prepared according to known methods or obtained from commercial sources.
  • the optional perfluoropolymer particles are present in a weight ratio of PFA:optional perfluoropolymer particles in a range of from 1 :4 to 4: 1 , more typically in a weight ratio of from 3:7 to 7:3.
  • the silica particles typically have a mean particle size of less than about 150 nm, although larger mean particle sizes may be used if they can be suspended in the primer composition. Typically, the silica particles have a mean particle size in a range of from 4 to 45 nm, more typically in a range of from 4 to 20 nm.
  • the term "silica particle” refers to silica particles that do not have any covalently bound organic surface group(s).
  • the silica particles are typically provided in a colloidal dispersion (e.g., as a sol), although this is not a requirement. Colloidal silica particles are available in acidic or basic forms, and either form may be utilized.
  • colloidal silica particles include, for example, partially neutralization of an alkali-silicate solution. More typically, colloidal silica dispersions are provided from commercial suppliers; for example, under the trade designation LUDOX from W.R. Grace of Columbia, MD; or as NALCO 1034A colloidal silica (NALCO 1034A), NALCO 1129 colloidal silica (NALCO 1129), NALCO 2327 colloidal silica (NALCO 2327), NALCO 2326 colloidal silica (NALCO 2326), and NALCO 1140 colloidal silica (NALCO 1140), all available from Nalco Chemical Company of Naperville, IL.
  • NALCO 1034A colloidal silica
  • NALCO 1129 colloidal silica
  • NALCO 2327 colloidal silica
  • NALCO 2326 NALCO 2326
  • NALCO 1140 colloidal silica
  • NALCO 1034A has a mean particle size of 20 nm and a silica content of approximately 34 percent by weight in water with a pH of approximately 3.1.
  • NALCO 1129 has a mean particle size of 20 nm and an Si0 2 content of approximately 30 percent by weight in a solution of 40 percent isopropanol and 30 percent water.
  • NALCO 2327 has a mean particle size of 20 nm and a silica content of approximately 40 percent by weight in water with a pH of approximately 9.3, and ammonium as the stabilizing ion.
  • NALCO 2326 has a mean particle size of 5 nm and a silica content of approximately 14.5 percent by weight in water with a pH of approximately 9.0, and ammonium as the stabilizing ion.
  • NALCO 1140 has a mean particle size of 15 nm and a silica content of approximately 40 percent by weight in water with a pH of approximately 9.7, and sodium as the stabilizing ion.
  • the vaporizable aqueous liquid vehicle comprises water and optionally one or more organic solvents, typically volatile organic solvents, in amounts such that the vaporizable aqueous liquid vehicle forms a single phase.
  • organic solvents include methanol, ethanol, isopropanol, acetone, 2-methoxyethanol, glyme, and tetrahydrofuran.
  • the vaporizable aqueous liquid phase is essentially free of (e.g., contains less than one percent by weight) volatile organic solvents.
  • the concentration of organic solvent ranges from 0 to 40 percent by weight based on the weight of the vaporizable aqueous liquid vehicle.
  • the primer composition may have any pH that renders the composition stable enough for its intended use as a primer composition. Typically, the pH is in a range of from about 9 to about 11, although other pH values may also be useful.
  • the primer composition may have any solids content; for example, from about 2 percent to about 20 percent by weight based on the total weight of the primer composition, although other amounts may also be used.
  • a surfactant may be added to the primer composition.
  • useful surfactants include ionic surfactants such as, for example, sodium
  • the primer composition is typically made by combining with mixing the PFA particles and silica particles as aqueous dispersions, although other methods may be used.
  • pH for the primer composition is kept at 9 or higher, however this may vary depending on the dispersions used.
  • Primer compositions according to the present disclosure are typically applied to a glass surface of a substrate and at least partially dried to form a primer layer, more typically essentially completely dried.
  • the term “dried” refers to removal of the vaporizable aqueous liquid vehicle as a whole, not just water.
  • the primer composition may be disposed on the glass surface by any suitable method, such as for example, dip coating, spray coating, brushing, curtain coating, knife coating, squeegee, bar coating, or wiping.
  • the primer composition is at least partially dried to remove at least some, typically essentially all, of the vaporizable aqueous liquid vehicle. Drying may be facilitated, for example, by air flow assisted evaporation, heating, and/or reduced pressure.
  • a fluoropolymeric layer is then disposed on the primer layer.
  • exemplary article 100 comprises substrate 110 having glass surface 115, primer layer 120 disposed on glass surface 115, and fluoropolymeric layer 130 disposed on primer layer 120.
  • the substrate has a glass surface on which the primer composition is disposed, although not all surfaces of the substrate need be glass.
  • the primer composition may be disposed on a portion of the glass surface or the entire glass surface.
  • the primer composition may be deployed on at least a portion of one or more additional surface(s) of the substrate in addition to the glass surface.
  • glass refers to a non-crystalline transparent or translucent material formable by fusing silica, optionally with additional compounds (e.g., soda and lime, lead compounds, boron compounds, barium compounds, rare earth compounds, iron compounds, and cerium compounds) followed by rapid cooling.
  • additional compounds e.g., soda and lime, lead compounds, boron compounds, barium compounds, rare earth compounds, iron compounds, and cerium compounds
  • Exemplary glasses include soda-lime glasses and borosilicate glasses.
  • Exemplary substrates having glass surfaces include light bulbs, windows, cookware (e.g., saucepans, skillets), bakeware (e.g., PYREX baking dishes), solar cells, thermal solar collectors, windshields, and mirrors (e.g., solar reflectors).
  • cookware e.g., saucepans, skillets
  • bakeware e.g., PYREX baking dishes
  • solar cells thermal solar collectors
  • windshields e.g., solar reflectors
  • mirrors e.g., solar reflectors.
  • application of a PFA layer to the primer layer may provide shatter resistance.
  • the PFA layer may serve to contain the glass shards, and mercury in the case of fluorescent tubes or compact fluorescent light bulbs.
  • the perfluoropolymeric layer comprises at least one perfluoropolymer.
  • the fluoropolymeric layer is essentially free of (e.g., contains less than one percent by weight) of polymers having C-H bonds, although this is not a requirement.
  • the perfluoropolymeric layer may include additional components such as, for example, fillers, light stabilizers, antioxidants, surfactants, and colorants. Examples of suitable fillers, light stabilizers, antioxidants, surfactants, and colorants. Examples of suitable
  • perfluoropolymers include FEP and PFA.
  • the polymeric layer may be applied to the primer layer, for example, as a dispersion or extruded directly onto the primer layer.
  • primer compositions, articles, and methods according to the present disclosure can solve problems such as a lack of high transmission of light of existing PFA bonding primers, improve mechanical properties PFA coatings, and improve adhesion strength of perfluoroplastics to glass surfaces.
  • NALCO 1115 (15 weight percent solids, 4 nanometer average particle size colloidal silica), NALCO 2326 (14.5 weight percent silica, 5 nm average particle size colloidal silica), and NALCO 2327 (40 weight percent silica, 20 nm average particle size) were obtained from the Nalco Chemical Company of Naperville, IL.
  • DYNEON PFA 6900 N PFA dispersion 120 nm mean particle size, 50 weight percent solids was obtained from 3M Dyneon of Oakdale, MN.
  • Soda lime glass slides were obtained from VWR International of West Chester, PA, and were pretreated by gentle scrubbing with BAB-0 powdered cleanser from Fitzpatrick Bros., Inc. of Chicago, IL, and subsequently washed thoroughly with deionized water before use.
  • NALCO 1115 silica dispersion (1.0 grams (g), 4 nm mean particle size, 15 weight percent solids) was diluted with 9 g of water. To the diluted dispersion was added
  • a commercially available light bulb (General Electric 40 watt tungsten filament) was rinsed with water and dried by air. To the surface was applied (by dip coating) the aqueous liquid primer described above except the neck area of the light bulb. This provided an area where the PFA coating would not adhere to the glass in order to create a tab for the peel test.
  • the coated light bulb was dried in an oven at 100°C for an hour.
  • the light bulb was then electrostatically powder coated with Dyneon PFA 6503B EPC powder (PFA powder from Dyneon LLC) using a Nordson SURECOAT manual powder coating system (from Nordson Corp. of Westlake, OH) at 70 volts, 150 kPa airflow until no bare glass was visible.
  • the light bulb was then baked in an air circulating oven at 750°F (400°C) for 10 minutes. Upon removal from the oven, the light bulb sample was cooled to room temperature. The resulting PFA-coated light bulb was clear, the interfacial adhesion between PFA layer and primed glass surface exhibited excellent adhesion compared with the interface between PFA layer and unprimed neck area where no adhesion was observed.
  • a commercially available light bulb (General Electric 40 watt tungsten filament) was rinsed with water and dried by air.
  • PRIMER COMPOSITION 1 was applied to the light bulb as before, except that the entire surface of the bulb was coated.
  • the primed light bulb was dried in an oven at 100°C for an hour. The light bulb was then
  • PFA 6503B EPC powder Dyneon PFA 6503B EPC powder (PFA powder from Dyneon LLC) using a Nordson SURECOAT manual powder coating system, at 70 volts, 150 kPa airflow until no bare glass was visible.
  • the powder- coated light bulb was then baked in an air circulating oven at 750°F (400°C.) for 10 minutes. Upon removal from the oven, the light bulb was cooled. The resulting PFA coated light bulb was just like the one obtained in the previous experiment.
  • the PFA coated light bulb was thrown at least 3 meters high above the floor. Upon impact the light bulb was completely broken, but all the broken pieces were retained by the coated PFA layer while the PFA coating remained intact.
  • the strips were then electrostatically powder coated with PFA 6503B EPC powder Dyneon PFA 6503B EPC powder (PFA powder from Dyneon LLC) using a Nordson SURECOAT manual powder coating system, at 70 volts, 150 kPa airflow until no bare glass was visible.
  • the strips were then baked in an air circulating oven at 750°F (400°C.) for 10 minutes. Upon removal of the strips from the oven, the strips were cooled and the edges of each strip were scraped with a sharp blade to remove any coating that may have accumulated at the edges of the specimen.
  • the peel strength was measured by testing the samples using an Instron tensile testing apparatus equipped with a floating roller peel test fixture at a crosshead speed of 6 in/min (15 cm/min) and peeling to 3.75 inches (9.5 cm) extension generally according to test method ASTM D3167-03a (2004), "Standard Test Method for Floating Roller Peel Resistance of

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  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Nanotechnology (AREA)
  • Dispersion Chemistry (AREA)
  • Composite Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne une composition de primaire qui comprend des particules de polymère PFA et des particules de silice colloïdale dispersées dans un véhicule liquide aqueux vaporisable. Le rapport en poids des particules de silice colloïdale aux particules de polymère PFA est inférieur ou égal à 0,6. La composition de primaire contient moins d'une partie en poids de : a) des composés organiques non vaporisables ayant au moins une liaison C-H ; b) des particules inorganiques ayant une dimension moyenne de particule de plus d'un micromètre. L'invention porte également sur des procédés d'application du primaire en revêtement sur du verre et des articles le comprenant.
PCT/US2011/020729 2010-01-14 2011-01-11 Revêtement de polymère fluoré pour le verre et les articles le comprenant Ceased WO2011087997A1 (fr)

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CN201010004005.3 2010-01-14
CN2010100040053A CN102127347A (zh) 2010-01-14 2010-01-14 用于玻璃的含氟聚合物涂料以及包含它的制品

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WO2011087997A1 true WO2011087997A1 (fr) 2011-07-21
WO2011087997A8 WO2011087997A8 (fr) 2012-02-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9221990B2 (en) 2012-11-14 2015-12-29 3M Innovative Properties Company Fluoropolymer coatings suitable for films of photovoltaic modules
WO2019097469A3 (fr) * 2017-11-17 2019-07-18 3M Innovative Properties Company Couches réceptrices d'encre pour étiquettes durables
US10400109B2 (en) 2013-10-04 2019-09-03 3M Innovative Properties Company Coatable composition, antistatic composition, antistatic articles, and methods of making the same
US12331213B2 (en) 2018-06-29 2025-06-17 3M Innovative Properties Company Ink-receptive layers for durable labels

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9221990B2 (en) 2012-11-14 2015-12-29 3M Innovative Properties Company Fluoropolymer coatings suitable for films of photovoltaic modules
US9562168B2 (en) 2012-11-14 2017-02-07 3M Innovative Properties Company Fluoropolymer coatings suitable for films of photovoltaic modules
US10400109B2 (en) 2013-10-04 2019-09-03 3M Innovative Properties Company Coatable composition, antistatic composition, antistatic articles, and methods of making the same
WO2019097469A3 (fr) * 2017-11-17 2019-07-18 3M Innovative Properties Company Couches réceptrices d'encre pour étiquettes durables
US11905429B2 (en) 2017-11-17 2024-02-20 3M Innovative Properties Company Ink-receptive layers for durable labels
US12331213B2 (en) 2018-06-29 2025-06-17 3M Innovative Properties Company Ink-receptive layers for durable labels

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