CN112011259A - Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof - Google Patents
Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof Download PDFInfo
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- CN112011259A CN112011259A CN202010932204.4A CN202010932204A CN112011259A CN 112011259 A CN112011259 A CN 112011259A CN 202010932204 A CN202010932204 A CN 202010932204A CN 112011259 A CN112011259 A CN 112011259A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- 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
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3642—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating containing a metal layer
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- 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
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3644—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the metal being silver
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- 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
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/38—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal at least one coating being a coating of an organic material
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- 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
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/25—Metals
- C03C2217/251—Al, Cu, Mg or noble metals
- C03C2217/254—Noble metals
- C03C2217/256—Ag
-
- 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
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/29—Mixtures
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- 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
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
-
- 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
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/114—Deposition methods from solutions or suspensions by brushing, pouring or doctorblading
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- 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
- C03C2218/32—After-treatment
-
- 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
- C03C2218/32—After-treatment
- C03C2218/328—Partly or completely removing a coating
-
- 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
- C03C2218/355—Temporary coating
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Surface Treatment Of Glass (AREA)
Abstract
The invention discloses a temporary protective film capable of reducing glass heat treatment cost and a heat treatment method thereof, wherein the temporary protective film comprises a glass substrate, wherein a functional coating layer is sprayed on the surface of the glass substrate; a temporary protective film is coated on the surface of the functional coating layer, the temporary protective film can be heated and dried through IR, and then hardened through UV irradiation, the wavelength range of the UV irradiation is 245-395 nm, and the optimal range is 280-350 nm; the temporary protective film may be removed by thermal decomposition or combustion. The temporary protective film capable of reducing the glass heat treatment cost and the heat treatment method thereof provided by the invention have good heat absorption performance, can reduce the glass heat treatment cost, improve the production efficiency, and have the function of protecting a coating layer on coated glass from being damaged (corrosion, oxidation or scratch resistance) due to the influence of the outside.
Description
Technical Field
The invention relates to the field of glass production and processing, in particular to the field of temporary protective films capable of reducing glass heat treatment cost.
Background
The improper temperature control of the glass in the toughening process can cause the temperature difference between different positions of the glass surface, so that the glass is bent; the heating process is a main process of the toughening furnace and is also the most important process influencing the final toughening quality of the glass; because the low-emissivity coated glass containing the silver film layer has low mechanical strength of the coated layer, is easy to scratch and is not wear-resistant; it would be extremely important to be able to reduce the cost of glass production and to provide protection to the glass.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the temporary protective film capable of reducing the glass heat treatment cost and the heat treatment method thereof, which have good heat absorption performance, can reduce the glass heat treatment cost, improve the production efficiency and simultaneously have the function of protecting the coating layer on the coated glass from being damaged (corrosion, oxidation or scratch resistance) caused by the influence of the outside.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
the temporary protective film capable of reducing the glass heat treatment cost comprises a glass substrate, wherein a functional coating layer is sprayed on the surface of the glass substrate; a protective film is coated on the surface of the functional coating layer, the protective film can be heated and dried through IR, and then hardened through UV irradiation, the wavelength range used by the UV irradiation is 245-395 nm, and the optimal range is 280-350 nm; the protective film can be removed by thermal decomposition or combustion.
Further, the protective film liquid composition comprises:
(1) at least one polyester acrylate or epoxy acrylate prepolymer;
(2) at least one acrylate monomer, prepolymer or polymer selected from mono-, di-or tri-functional acrylate monomers;
(3) at least one polymerization initiator;
(4) at least 1 infrared absorber.
Further, the total weight of the protective film accounts for the ratio:
(1) 30% to 80% by weight of at least one polyester acrylate or epoxy acrylate prepolymer;
(2) from 20% to 70% by weight of at least one acrylate monomer selected from mono-, di-or trifunctional acrylates;
(3) the polymerization initiator accounts for 3 to 15 percent of the total weight of the acrylate compound;
(4) the infrared absorber accounts for 0.5 to 5 percent of the total weight of the acrylate compound.
Further, the infrared ray absorber may be selected from at least one of: metal oxides such as magnesium oxide, calcium oxide, aluminum oxide, silicon oxide, and titanium oxide, hydroxides such as lithium hydroxide, aluminum hydroxide, magnesium hydroxide, and calcium hydroxide, carbonates such as magnesium carbonate and calcium carbonate, sulfates such as potassium sulfate, magnesium sulfate, and calcium sulfate, phosphates such as lithium phosphate, potassium phosphate, and sodium phosphate, and silicates such as magnesium silicate, calcium silicate, and aluminum silicate. The heating is more uniform, and the cost is reduced.
Further, the thickness of the protective film is at least 5 μm.
Further, the protective film is insoluble in water; moisture resistance and corrosion resistance.
Further, the proportion of the protective film in the embodiment is as follows:
(1) polyester acrylate: 55 percent of amine modified polyester acrylate;
(2) acrylate ester monomer: 1, 6-hexanediol dimethacrylate accounting for 40 percent;
(3) infrared absorber: titanium dioxide, accounting for 1%;
(4) polymerization initiator: 1-Hydroxycyclohexylketone, accounting for 4%.
Further, the protective film coating structure is also included; the protective film coating structure comprises a first conveying belt and a coating box structure; a protective solution recovery tank is arranged below the first conveying belt; a chemical adding device is arranged in the protective liquid recovery tank; the coating box body structure is arranged right above the first conveying belt at intervals, and the output end of the dosing device is communicated with the coating box body structure; a dose adjusting valve is arranged in the coating box body structure; the output end of the dosage regulating valve corresponds to the surface of the glass substrate sprayed with the functional coating layer on the first conveying belt; and (5) uniformly coating a protective film.
Further, a second conveying belt is connected to the tail end of the first conveying belt; a drying device is arranged on the side edge of the second conveying belt; the drying device comprises an infrared heater; the output end of the infrared heater faces the surface of the protective film; the infrared heaters are arranged at intervals, and the gas transmission pipes of the infrared heaters are converged and communicated with the evacuation pipeline; the input end of the air pump is communicated with the evacuation pipeline; drying and hardening the mixture and pumping out pungent gas.
Further, the first step: when the glass is toughened, selecting various glass types to carry out a comparison experiment, and determining the optimal glass type with better toughening performance according to toughening performance parameters obtained from different types; the types of glass are: common white glass, single silver can steel, double silver can steel and triple silver can steel;
the second step is that: testing the quality of the toughened glass by changing the thickness of the protective film, the bare oxidation resisting time, the pencil hardness and the edging operation;
the third step: when the glass is toughened, toughening heat treatment parameters are changed to toughen the glass, and then the toughened glass is tested to obtain toughening indexes to judge the toughened quality; the toughening heat treatment parameters comprise preheating time, heating time, preheating temperature and heating temperature.
Has the advantages that: the invention has good heat absorption, reduces the heat treatment cost of the glass and improves the production efficiency; the protection of physical wiping, scratching and the like of the coated glass can be provided, excellent storage protection can be provided, and the silver-containing coating layer is prevented from being oxidized; thus, the infrared absorbent is coated and heated more uniformly during tempering heat treatment, and the heat treatment cost of the glass can be effectively reduced; the product quality is improved.
Drawings
FIG. 1 is a view showing a structure of a coating of a protective film;
FIG. 2 is a view of the structure of the drying apparatus;
FIG. 3 is a view showing a structure of a glass coating film.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figures 1-3: the temporary protective film capable of reducing the glass heat treatment cost comprises a glass substrate a, wherein a functional coating layer b is sprayed on the surface of the glass substrate; a protective film c is coated on the surface of the functional coating layer b, the protective film c can be heated and dried through IR, and then hardened through UV irradiation, the wavelength range used by the UV irradiation is 245-395 nm, and the optimal range is 280-350 nm; the protective film c may be removed by thermal decomposition or combustion. The invention provides a protective film which can provide protection of coated glass such as physical rubbing, scratching and the like, can provide excellent storage protection to avoid oxidation of a silver-containing coating layer, can be removed through thermal decomposition or combustion, and solves the defects of other forms of protective films.
The protective film c liquid combination comprises:
(1) at least one polyester acrylate or epoxy acrylate prepolymer; this protective film c essentially comprises an organic material of the (meth) acrylate polymer type, whose chemical formulation enables a rapid and complete combustion during thermal treatment; while it produces only volatile molecules that are easily removed during decomposition.
(2) At least one acrylate monomer, prepolymer or polymer selected from mono-, di-or tri-functional acrylate monomers; the acrylate compound may be selected from monofunctional and multifunctional acrylate monomers such as:
monofunctional acrylates such as methyl methacrylate, ethyl methacrylate, hexyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl methacrylate, 2-ethoxyethyl methacrylate, phenoxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl methacrylate, vinyl methacrylate, caprolactone acrylate, isobornyl methacrylate, lauryl methacrylate, polypropylene glycol monomethacrylate and the like.
Difunctional acrylates, such as 1, 4-butanediol dimethacrylate, ethylene dimethacrylate, 1, 6-hexanediol dimethacrylate, bisphenol A dimethacrylate, trimethylolpropane diacrylate, triethylene glycol diacrylate, ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, tricyclodecane dimethylol diacrylate and the like.
Trifunctional acrylates such as trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, ethoxylated trimethylolpropane triacrylate, tripropylene glycol triacrylate, and the like.
(3) At least one polymerization initiator; the polymerization initiator depends on the form chosen for hardening. For example, in the case of thermal hardening, benzoyl peroxide type initiators are used. In the hardened form by ultraviolet radiation, a photoinitiator is used. The photoinitiator may be selected from at least one of: 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropiophenone, 1-hydroxycyclohexylphenylketone, 2-dimethoxy-2-phenylacetophenone, diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide.
(4) At least 1 infrared absorbent, which can be heated more uniformly during tempering heat treatment, can effectively reduce the heat treatment cost of the glass.
The total weight of the protective film c is as follows:
(1) 30% to 80% by weight of at least one polyester acrylate or epoxy acrylate prepolymer;
(2) from 20% to 70% by weight of at least one acrylate monomer selected from mono-, di-or trifunctional acrylates;
(3) the polymerization initiator accounts for 3 to 15 percent of the total weight of the acrylate compound;
(4) the infrared absorber accounts for 0.5 to 5 percent of the total weight of the acrylate compound.
The infrared absorber may be selected from at least one of: metal oxides such as magnesium oxide, calcium oxide, aluminum oxide, silicon oxide, and titanium oxide, hydroxides such as lithium hydroxide, aluminum hydroxide, magnesium hydroxide, and calcium hydroxide, carbonates such as magnesium carbonate and calcium carbonate, sulfates such as potassium sulfate, magnesium sulfate, and calcium sulfate, phosphates such as lithium phosphate, potassium phosphate, and sodium phosphate, and silicates such as magnesium silicate, calcium silicate, and aluminum silicate.
The thickness of the protective film c is at least 5 μm.
The protective film c is insoluble in water. This water-insoluble protective film c allows an effective protection during the film-processing step and is resistant to moisture and corrosion.
The proportion of the protective film c in the embodiment is as follows:
(1) polyester acrylate: 55 percent of amine modified polyester acrylate;
(2) acrylate ester monomer: 1, 6-hexanediol dimethacrylate accounting for 40 percent;
(3) infrared absorber: titanium dioxide, accounting for 1%;
(4) polymerization initiator: 1-Hydroxycyclohexylketone, accounting for 4%.
The protective film of the invention is particularly directed to strengthened glass which allows it to be removed by thermal decomposition during heat treatment. Its chemical formula enables the protective film to burn rapidly and completely during the heat treatment and only produces volatile molecules during its decomposition which are easy to remove, and the temperature of the tempered glass process can be reduced moderately to save energy.
Further comprising a protective film coating structure d; the protective film coating structure d comprises a first conveying belt d1 and a coating box body structure d 2; a protective liquid recovery tank d3 is arranged below the first conveying belt d 1; a dosing device d4 is arranged in the protective liquid recovery tank d 3; the coating box body structure d2 is arranged right above the first conveying belt d1 at an interval, and the output end of the medicine feeding device d4 is communicated with the coating box body structure d 2; in the process of coating the protective liquid, a part of the protective liquid falls into the protective liquid recovery tank d3 and is pumped back and supplemented into the coating tank structure d2 through the dosing device d4, so that the utilization rate is improved; a dose regulating valve d5 is arranged in the coating box structure d 2; the output end of the medicine quantity regulating valve d5 corresponds to the surface of the glass substrate a sprayed with the functional coating layer b on the first conveyer belt d 1; the amount of the protective liquid in the coating box structure d2 is controlled by the dosage regulating valve d5, and then the protective liquid is uniformly coated on the surface of the glass substrate a sprayed with the functional coating layer b to form a protective film, so that the temporary protection effect is achieved; the width of the protective liquid recovery groove d3 is greater than that of the first conveyor belt d1, the shadow area of the coating box structure d2 is projected right above the protective liquid recovery groove d3, and the shadow area of the coating box structure d2 is smaller than the notch area of the protective liquid recovery groove d 3; thus, in the coating process, most of the protective liquid coming out of the coating box structure d2 is coated on the glass substrate 4, and a small part of the protective liquid falls into the protective liquid recovery groove d3 from the edge of the glass substrate a; the pollution can be effectively avoided, and meanwhile, the protective liquid accumulated due to dropping can be recycled; the bottom surface of the protective liquid recovery tank d3 is an inclined surface, and the low end of the inclined surface is provided with a dosing device d 4; the protection liquid convenient to assemble and drop like this is then drawn back to coating box structure d2 through charge device in, recycle. The conveying speed (20-100 m/min) can be adjusted according to the different thicknesses of the required protective films; the thickness of the protective film ranges from 1 to 50 microns.
The tail end of the first conveying belt d1 is connected with a second conveying belt h; a drying device e is arranged on the side edge of the second conveying belt h; the drying device e comprises an infrared heater e 1; the output end of the infrared heater e1 faces to the surface of the protective film c; the infrared heaters e1 are arranged at intervals, and the air conveying pipes of the infrared heaters e1 are converged and communicated with the evacuation pipeline f; the input end of the air pump is communicated with the evacuation pipeline f; the pungent smell generated during drying is pumped away, so that the effects of preventing environmental pollution and avoiding human body damage can be effectively achieved; the infrared heaters e1 are arranged in a staggered manner, and the edge lines of the adjacent infrared heaters e1 are overlapped with the center line of the conveying direction; if the infrared heaters e1 are arranged in parallel in a line, the temperature of the central line position of the infrared heater e1 is higher than that of the edge, so that uneven temperature is easily caused during baking, the hardness of the dried protective film is different, and a good protection effect cannot be completely realized; the staggered arrangement can avoid the continuous overhigh temperature at the central line position in the conveying direction and effectively improve the quality of drying and hardening. The infrared heating temperature is 150-300 deg.C, and the second conveyer belt conveying speed is 0.5-20 m/min.
The first step is as follows: when the glass is toughened, selecting various glass types to carry out a comparison experiment, and determining the optimal glass type with better toughening performance according to toughening performance parameters obtained from different types; the types of glass are: common white glass, single silver can steel, double silver can steel and triple silver can steel;
the second step is that: testing the quality of the toughened glass by changing the thickness of the protective film, the bare oxidation resisting time, the pencil hardness and the edging operation;
the third step: when the glass is toughened, toughening heat treatment parameters are changed to toughen the glass, and then the toughened glass is tested to obtain toughening indexes to judge the toughened quality; the toughening heat treatment parameters comprise preheating time, heating time, preheating temperature and heating temperature.
Glass tempering test examples are as follows:
the indexes of the tempering factory standard are as follows: bow shape (the plant standard is less than or equal to 0.1%); waveform (the plant standard is less than or equal to 0.05%); granularity (factory standard is more than or equal to 40 grains/25 cm 2); stress (the plant standard is more than or equal to 90 MPa);
the first embodiment is as follows: selecting the glass type as common white glass;
tempering test parameters:
(1) setting heat treatment parameters: preheating time 230 s; heating time is 220 s; the preheating temperature is 615 ℃/610 ℃; the heating temperature is 665 ℃/660 ℃;
a first group: thickness of the protective film: 0 μm; pencil hardness: 5H; bow shape: 0.07 percent; waveform: 0.026%; the granularity is as follows: 44 grains; stress: 90 Mpa; transmittance before steel: 89.2; post-steel transmittance 89.3;
second group: thickness of the protective film: 15 μm; pencil hardness: 8H; and (3) edging test: the film is not dissolved; bow shape: 0.05 percent; waveform: 0.022%; the granularity is as follows: 68 grains; stress: 95 MPa; quality after steel making: no residue is left; transmittance before steel: 84.5; post-steel transmittance 89.4;
(2) optimizing the heat treatment parameter setting: preheating time is 200 s; heating time is 190 s; the preheating temperature is 610 ℃/605 ℃; the heating temperature is 665 ℃/655 ℃;
third group: thickness of the protective film: 15 μm; bow shape: 0.03 percent; waveform: 0.024%; the granularity is as follows: 45 grains; stress: 90 Mpa; quality after steel making: no residue is left;
the first embodiment described above yields:
when the edge is deeply processed, the protective film cannot be cleaned, and the glass film layer is protected. The edge grinding and film washing machine water is changed from ultrapure water with higher cost into ordinary tap water for washing, so that the production cost is saved; during toughening, the heating time of the toughening furnace can be shortened, the production efficiency is improved, the glass is heated more uniformly during toughening, the toughening warpage around the edge of the glass is reduced, the glass carrying rate is increased, and the energy consumption is reduced by 15%.
Example two: selecting the glass type to be single silver steel;
tempering test parameters:
setting heat treatment parameters: preheating time 230 s; heating time is 220 s; the preheating temperature is 615 ℃/610 ℃; the heating temperature is 665 ℃/660 ℃;
a first group: thickness of the protective film: 0 μm; bare antioxidant time (H): 162; pencil hardness: 2H; bow shape: 0.07 percent; waveform: 0.026%; the granularity is as follows: 38 grains; stress: 87 MPa; transmittance before steel: 67.1; post-steel transmittance 68.2;
second group: thickness of the protective film: 15 μm; bare antioxidant time (H): 980; pencil hardness: 6H; and (3) edging test: the film is not dissolved; bow shape: 0.06 percent; waveform: 0.024%; the granularity is as follows: 56 granules of the mixture; stress: 93 Mpa; quality after steel making: no residue is left; transmittance before steel: 64.2; post-steel transmittance 68.2;
the following results are obtained by the second example:
when the edge is deeply processed, the protective film cannot be cleaned, and the glass film layer is protected. The edge grinding and film washing machine water is changed from ultrapure water with higher cost into ordinary tap water for washing, so that the production cost is saved; the processing resistance and the oxidation resistance of the deep processing of the steel glass are improved; during toughening processing, the heating time of the toughening furnace can be shortened, the production efficiency is improved, the glass is heated more uniformly during toughening, the toughening warping around the edge of the glass is reduced, the glass carrying rate is increased, and the energy consumption is reduced by 20%; the spraying of the insoluble water protective film can change the external packing mode of single-silver steel products and reduce the packing material and labor cost of the coating film.
Example three: selecting glass type as double-silver steel;
tempering test parameters:
setting heat treatment parameters: preheating time is 200 s; heating time is 190 s; the preheating temperature is 610 ℃/605 ℃; the heating temperature is 665 ℃/655 ℃;
a first group: thickness of the protective film: 0 μm; bare antioxidant time (H): 74; pencil hardness: 4B; bow shape: 0.06 percent; waveform: 0.028%; the granularity is as follows: 42 grains of the mixture; stress: 93 Mpa; transmittance before steel: 67; the post-steel transmittance is 75.3;
second group: thickness of the protective film: 15 μm; bare antioxidant time (H): 720, performing a test; pencil hardness: 6H; and (3) edging test: the film is not dissolved; bow shape: 0.05 percent; waveform: 0.025 percent; the granularity is as follows: 55 grains; stress: 93 Mpa; quality after steel making: no residue is left; transmittance before steel: 63.8; the post-steel transmittance is 75.3;
the results obtained by the third example above are:
when the edge is deeply processed, the protective film cannot be cleaned, and the glass film layer is protected. The edge grinding and film washing machine water is changed from ultrapure water with higher cost into ordinary tap water for washing, so that the production cost is saved; the processing resistance and the oxidation resistance of the deep processing of the steel glass are improved; when the tempering processing is carried out, the white glass data is used for strengthening treatment, the heating time of the tempering furnace can be shortened, the production efficiency is improved, the glass is heated more uniformly during tempering, the tempering warpage around the edge of the glass is reduced, and the glass carrying rate is increased.
Example four: selecting three-silver tempered glass;
tempering test parameters:
(1) setting heat treatment parameters: a preheating time 245 s; heating time 240 s; preheating temperature is 620 ℃/615 ℃; heating at 670 deg.C/661 deg.C;
a first group: thickness of the protective film: 0 μm; bare antioxidant time (H): 28; pencil hardness: 5B; bow shape: 0.05 percent; waveform: 0.026%; the granularity is as follows: 40 grains; stress: 86 MPa; transmittance before steel: 48.4 of the total weight of the mixture; post-steel transmittance 55;
second group: thickness of the protective film: 15 μm; bare antioxidant time (H): 360; pencil hardness: 4H; and (3) edging test: the film is not dissolved; bow shape: 0.05 percent; waveform: 0.022%; the granularity is as follows: 42 grains of the mixture; stress: 92 Mpa; quality after steel making: no residue is left; transmittance before steel: 44.2; post-steel transmittance 55;
(2) optimizing the heat treatment parameter setting: preheating time 210 s; a heating time 205 s; preheating temperature is 620 ℃/615 ℃; heating at 670 deg.C/661 deg.C;
third group: thickness of the protective film: 15 μm; bow shape: 0.03 percent; waveform: 0.024%; the granularity is as follows: 45 grains; stress: 90 Mpa; quality after steel making: no residue is left.
The following results are obtained by the fourth example:
when the edge is deeply processed, the protective film cannot be cleaned, and the glass film layer is protected. The edge grinding and film washing machine water is changed from ultrapure water with higher cost into ordinary tap water for washing, so that the production cost is saved; the hardness of the pencil is obviously improved, and the processing resistance and the oxidation resistance of the deep processing of the steel glass are improved; when the three-silver temperable product is tempered, the heating time of the tempering furnace is shortened, and the production efficiency is improved by about 25 percent; no residue is left after tempering and heating, the processing is convenient and the product performance is not influenced.
The results of the above examples show that:
1. during toughening processing, the white glass data is used for strengthening treatment, so that the heating time of the toughening furnace can be shortened, the production efficiency is improved, the glass is heated more uniformly during toughening, the toughening warping around the edge of the glass is reduced, the glass carrying rate is increased, and the power consumption is saved;
2. when the edge is deeply processed, the protective film cannot be cleaned, and the glass film layer is protected. The edge grinding and film washing machine water is changed from ultrapure water with higher cost into ordinary tap water for washing, so that the production cost is saved;
3. the processing resistance and the oxidation resistance of the deep processing of the steel glass are improved;
4. the temporary protective film without water solubility is sprayed on the surface of the steel plate, so that the external packaging mode of the steel plate can be changed, and the packaging material and labor cost of the LOW-E coating film can be reduced.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (10)
1. A temporary protective film capable of reducing the cost of glass heat treatment, characterized in that: the glass substrate comprises a glass substrate (a), wherein a functional coating layer (b) is sprayed on the surface of the glass substrate; a protective film (c) is coated on the surface of the functional coating layer (b), the protective film (c) can be heated and dried through IR, and then hardened through UV irradiation, the wavelength range used by the UV irradiation is 245-395 nm, and the optimal range is 280-350 nm; the protective film (c) may be removed by thermal decomposition or combustion.
2. The temporary protective film according to claim 1, wherein the temporary protective film is characterized in that: the protective film (c) liquid combination comprises:
(1) at least one polyester acrylate or epoxy acrylate prepolymer;
(2) at least one acrylate monomer, prepolymer or polymer selected from mono-, di-or tri-functional acrylate monomers;
(3) at least one polymerization initiator;
(4) at least 1 infrared absorber.
3. The temporary protective film according to claim 2, wherein the temporary protective film is characterized in that: the total weight of the protective film (c) is as follows:
(1) 30% to 80% by weight of at least one polyester acrylate or epoxy acrylate prepolymer;
(2) from 20% to 70% by weight of at least one acrylate monomer selected from mono-, di-or trifunctional acrylates;
(3) the polymerization initiator accounts for 3 to 15 percent of the total weight of the acrylate compound;
(4) the infrared absorber accounts for 0.5 to 5 percent of the total weight of the acrylate compound.
4. The temporary protective film according to claim 2, wherein the temporary protective film is characterized in that: the infrared absorber may be selected from at least one of: metal oxides such as magnesium oxide, calcium oxide, aluminum oxide, silicon oxide, and titanium oxide, hydroxides such as lithium hydroxide, aluminum hydroxide, magnesium hydroxide, and calcium hydroxide, carbonates such as magnesium carbonate and calcium carbonate, sulfates such as potassium sulfate, magnesium sulfate, and calcium sulfate, phosphates such as lithium phosphate, potassium phosphate, and sodium phosphate, and silicates such as magnesium silicate, calcium silicate, and aluminum silicate.
5. The temporary protective film according to claim 1, wherein the temporary protective film is characterized in that: the thickness of the protective film (c) is at least 5 μm.
6. The temporary protective film according to claim 1, wherein the temporary protective film is characterized in that: the protective film (c) is insoluble in water.
7. The temporary protective film according to claim 1, wherein the temporary protective film is characterized in that: the implementation method of the protective film (c) comprises the following steps:
(1) polyester acrylate: 55 percent of amine modified polyester acrylate;
(2) acrylate ester monomer: 1, 6-hexanediol dimethacrylate accounting for 40 percent;
(3) infrared absorber: titanium dioxide, accounting for 1%;
(4) polymerization initiator: 1-Hydroxycyclohexylketone, accounting for 4%.
8. The temporary protective film according to claim 1, wherein the temporary protective film is characterized in that: further comprising a protective film coating structure (d); the protective film coating structure (d) comprises a first conveying belt (d1) and a coating box body structure (d 2); a protective liquid recovery groove (d3) is arranged below the first conveying belt (d 1); a dosing device (d4) is arranged in the protective liquid recovery tank (d 3); the coating box body structure (d2) is arranged right above the first conveyer belt (d1) at intervals, and the output end of the medicine adding device (d4) is communicated with the coating box body structure (d 2); a dose regulating valve (d5) is arranged in the coating box body structure (d 2); the output end of the medicine quantity regulating valve (d5) corresponds to the surface of the glass substrate (a) sprayed with the functional coating layer (b) on the first conveyer belt (d 1).
9. The temporary protective film according to claim 8, wherein the protective film comprises: the tail end of the first conveying belt (d1) is connected with a second conveying belt (h); a drying device (e) is arranged on the side edge of the second conveying belt (h); the drying device (e) comprises an infrared heater (e 1); the output end of the infrared heater (e1) faces to the surface of the protective film (c); the infrared heaters (e1) are arranged at intervals, and the air conveying pipes of the infrared heaters (e1) are converged and communicated with the evacuation pipeline (f); the input end of the air pump is communicated with the evacuation pipeline (f).
10. The method for heat-treating a temporary protective film capable of reducing the cost of heat-treating glass according to any one of claims 1 to 9, characterized in that the first step: when the glass is toughened, selecting various glass types to carry out a comparison experiment, and determining the optimal glass type with better toughening performance according to toughening performance parameters obtained from different types; the types of glass are: common white glass, single silver can steel, double silver can steel and triple silver can steel;
the second step is that: testing the quality of the toughened glass by changing the thickness of the protective film, the bare oxidation resisting time, the pencil hardness and the edging operation;
the third step: when the glass is toughened, toughening heat treatment parameters are changed to toughen the glass, and then the toughened glass is tested to obtain toughening indexes to judge the toughened quality; the toughening heat treatment parameters comprise preheating time, heating time, preheating temperature and heating temperature.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010932204.4A CN112011259A (en) | 2020-09-08 | 2020-09-08 | Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof |
| TW109134852A TWI742873B (en) | 2020-09-08 | 2020-10-07 | Temporary protective film capable of reducing glass heat treatment cost and protective film coating structure and heat treatment method thereof |
| TW109213191U TWM607554U (en) | 2020-09-08 | 2020-10-07 | Glass structure with temporary protective film and temporary protective film coating structure for reducing glass heat treatment cost |
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| CN202010932204.4A CN112011259A (en) | 2020-09-08 | 2020-09-08 | Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof |
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| CN115084999A (en) * | 2022-07-20 | 2022-09-20 | 度亘激光技术（苏州）有限公司 | Cavity surface coating method and semiconductor laser |
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| CN112011259A (en) * | 2020-09-08 | 2020-12-01 | 台玻太仓工程玻璃有限公司 | Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442783A (en) * | 2010-10-09 | 2012-05-09 | 北京建筑技术发展有限责任公司 | Process and device for coating film on glass |
| CN104291671A (en) * | 2014-09-03 | 2015-01-21 | 宁波市合鑫玻璃科技有限公司 | Production process for LOW-E incurved toughened glass |
| CN105968938A (en) * | 2016-05-27 | 2016-09-28 | 广州亦盛环保科技有限公司 | Ultraviolet-curable acid-resistant glass protection ink and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3009302B1 (en) * | 2013-08-05 | 2018-01-12 | Saint-Gobain Glass France | SUBSTRATE CARRYING A FUNCTIONAL COATING AND A TEMPORARY PROTECTION LAYER |
| CN112011259A (en) * | 2020-09-08 | 2020-12-01 | 台玻太仓工程玻璃有限公司 | Temporary protective film capable of reducing glass heat treatment cost and heat treatment method thereof |
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2020
- 2020-09-08 CN CN202010932204.4A patent/CN112011259A/en active Pending
- 2020-10-07 TW TW109213191U patent/TWM607554U/en unknown
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442783A (en) * | 2010-10-09 | 2012-05-09 | 北京建筑技术发展有限责任公司 | Process and device for coating film on glass |
| CN104291671A (en) * | 2014-09-03 | 2015-01-21 | 宁波市合鑫玻璃科技有限公司 | Production process for LOW-E incurved toughened glass |
| CN105968938A (en) * | 2016-05-27 | 2016-09-28 | 广州亦盛环保科技有限公司 | Ultraviolet-curable acid-resistant glass protection ink and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084999A (en) * | 2022-07-20 | 2022-09-20 | 度亘激光技术（苏州）有限公司 | Cavity surface coating method and semiconductor laser |
| CN115084999B (en) * | 2022-07-20 | 2022-11-25 | 度亘激光技术（苏州）有限公司 | Cavity surface coating method and semiconductor laser |
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| TW202210437A (en) | 2022-03-16 |
| TWM607554U (en) | 2021-02-11 |
| TWI742873B (en) | 2021-10-11 |
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