Application of UV protective oil in solving warping of float glass
Technical Field
The invention relates to the technical field of glass cover plate processing, in particular to application of UV (ultraviolet) protective oil in solving warping of float glass.
Background
The float glass is the most widely used method for producing the plane glass at present, the produced glass has the advantages of no ribs, good flatness, uniform thickness, compact structure and smooth hand feeling, and the float glass is commonly adopted in the surface protection cover plates of touch control equipment such as mobile phones, computers and the like at present. At present, the technological process for processing the float glass protective cover plate comprises the steps of raw glass, surface treatment, cutting, appearance milling, cleaning, chemical tempering and the like, but because a tin surface and an air surface exist in the float glass, in the ion exchange of the chemical tempering, the ion exchange is influenced because the sodium ion content of the tin surface is relatively reduced, and the ion exchange of the air surface is not influenced, so that the ion exchange amount of the two surfaces of the glass is different, the surface stress generated by the two surfaces is different, and the difference of CS is more than 20Mpa, so that the air surface can be raised after the chemical tempering.
The Chinese invention patent with the application number of 201410192558.4 discloses a processing technology of a float glass protective cover plate with low warping degree, and the technological process comprises the following steps: raw material glass → surface treatment → cutting → milling appearance → cleaning → surface polishing and thinning → cleaning → chemical tempering. The invention obtains the glass with tin-containing surface eliminated by polishing and thinning the surface of the float glass, thereby leading the exchange amount of ions on the upper surface and the lower surface of the large-size float glass to be the same when in chemical toughening, generating the same stress, reducing the warping degree of the toughened glass and improving the flatness of the glass. The technology can reduce the warping degree of tempered glass, but has the defect of relatively high cost.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the application of the UV protective oil in solving the problem of float glass warpage+The content is reduced, the potassium-sodium exchange of the air surface is influenced, the surface stress is just consistent with that of the tin surface, the warping degree of the chemically toughened glass is reduced, the flatness of the glass is improved, and the processing cost is low.
The purpose of the invention is realized by the following technical scheme: the application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the invention roller coats the UV protective oil on the tin surface of the float glass, and the air surface of the float glass is used for the sweeping treatment, namely, the air surface is swept to one side, and the air surface is slightly damaged by a sweeping medium, so that the air surface is Na+The content is reduced, the potassium-sodium exchange of the air surface is influenced, the surface stress is just consistent with that of the tin surface, the warping degree of the chemically toughened glass is reduced, the flatness of the glass is improved, and the processing cost is low.
By adopting the raw materials and strictly controlling the weight ratio of the raw materials, the prepared UV protective oil has strong adhesive force and high hardness to cover plate glass, can play a role in preventing the cover plate glass from being scratched in the processing process of the cover plate glass, can play a role in protecting the cover plate glass in the processing process of the cover plate glass, and can be quickly separated after the processing is finished.
Preferably, the modified epoxy acrylate is an epoxy acrylate modified by N-methylolacrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate. The invention can improve the adhesive force of the UV protective oil to the cover plate glass by adopting the modified epoxy acrylate and the modified polyurethane acrylate.
Preferably, the acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 1-3:1.4-2.2:0.5-1.5:1: 0.4-0.8. According to the invention, butyl acrylate, isooctyl acrylate and dodecyl methacrylate are used as soft monomers, so that the flexibility of the adhesive film can be improved, the film forming is promoted, and the adhesive force to the base material is good. By adopting methyl methacrylate as a hard monomer, the paint has better dirt resistance, water resistance, anti-adhesion and high gloss. By adopting hydroxypropyl methacrylate as a functional monomer, the adhesive force, the pollution resistance, the solvent resistance, the water resistance, the light retention and the color retention can be improved. According to the invention, by strictly controlling the weight ratio of the monomers, the prepared UV protective oil has high hardness, and can play a role in preventing the cover plate glass from being scratched in the processing process of the cover plate glass.
Preferably, the photoinitiator is 2, 2-dimethoxy-2-phenylacetophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone, 1, 2- (dimethylamino) -2- [ (4-methylphenyl) methyl ] -1- [4- (4-morpholino) phenyl ] -1-butanone, 2-methylanthraquinone, 2, 4-dimethylthioxanthone, acetophenone dimethyl ketal, benzil dimethyl ketal, (2, 6-dimethoxybenzoyl) -2,4, 4-pentylphosphine oxide, bis (2,4, 6-trimethylbenzoyl) -phenylphosphine oxide, 2,4, 6-trimethylbenzoyl diphenylphosphine oxide and 2, at least one of ethyl 4, 6-trimethylbenzoyldiphenylphosphinate. By adopting the photoinitiator, the invention has good initiating effect and can improve the reaction rate.
Preferably, the adhesion promoter is at least one of phenyl trimethoxy silane, methyl triethoxy silane, vinyl trimethoxy silane, aniline methyl triethoxy silane, vinyl tri (β -methoxyethoxy) silane, 3-aminopropyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane, gamma-methacryloxypropyl trimethoxy silane and diethylamino methyl triethoxy silane.
Preferably, the surfactant is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, alkylphenol ethoxylates, benzyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, fatty amine polyoxyethylene ether and sorbitan fatty acid ester. By adopting the surfactant, the stability of the UV protective oil can be improved, and the polymerization of acrylic monomers is facilitated.
Preferably, the thixotropic agent is at least one of fumed silica, precipitated silica, organobentonite, kaolin, and attapulgite. By adopting the thixotropic agent, the anti-sagging effect is good.
Preferably, the dispersant is at least one of calcium stearate, magnesium stearate, zinc stearate, barium stearate, butyl stearate, ethylene bis stearamide, stearic acid monoglyceride, glyceryl tristearate, microcrystalline paraffin and oxidized polyethylene wax. By adopting the dispersing agent, the gloss can be improved, the leveling effect can be improved, the tinting strength can be improved, the viscosity can be reduced, the flocculation can be reduced, and the storage stability can be improved.
Preferably, the leveling agent is at least one of polydimethylsiloxane, polymethylphenylsiloxane, polyether polyester modified organosiloxane, alkyl hydroxyl modified organosiloxane and acrylate leveling agent. By adopting the flatting agent, the surface tension of the protective oil can be effectively reduced, the flatting property and uniformity of the protective oil can be improved, the permeability of the protective oil can be improved, the possibility of generating spots and stains during brushing can be reduced, the coverage property is increased, and the film forming is uniform and natural.
Preferably, the defoaming agent is at least one of silicone emulsion, higher alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether. By adopting the defoaming agent, the invention has the characteristics of high defoaming speed, long foam inhibition time, good effect, good diffusivity and permeability, good thermal stability and the like.
The film-forming assistant is at least one of benzyl alcohol, hexanediol, dodecyl alcohol ester, ethylene glycol butyl ether, dipropylene glycol monobutyl ether, tripropylene glycol n-butyl ether, propylene glycol phenyl ether, hexanediol butyl ether acetate and 3-ethoxy ethyl propionate. By adopting the film forming additive, the invention has good film forming property, compatibility and excellent substrate adhesiveness.
The invention has the beneficial effects that: the invention roller coats the UV protective oil on the tin surface of the float glass, and the air surface of the float glass is used for the sweeping treatment, namely, the air surface is swept to one side, and the air surface is slightly damaged by a sweeping medium, so that the air surface is Na+The content is reduced, the potassium-sodium exchange of the air surface is influenced, the surface stress is just consistent with that of the tin surface, the warping degree of the chemically toughened glass is reduced, the flatness of the glass is improved, and the processing cost is low.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
The application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the modified epoxy acrylate is epoxy acrylate modified by N-hydroxymethyl acrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate.
The acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 1:1.4:0.5:1: 0.4.
The photoinitiator is 2, 2-dimethoxy-2-phenylacetophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone or 1, 2- (dimethylamino) -2- [ (4-methylphenyl) methyl ] -1- [4- (4-morpholino) phenyl ] -1-butanone.
The adhesion promoter is phenyl trimethoxy silane, methyl triethoxy silane or vinyl trimethoxy silane.
The surfactant is sodium dodecyl sulfate or sodium dodecyl benzene sulfonate.
The thixotropic agent is fumed silica.
The dispersing agent is calcium stearate, magnesium stearate, zinc stearate or barium stearate.
The leveling agent is polydimethylsiloxane.
The defoaming agent is emulsified silicone oil; the film-forming assistant is benzyl alcohol or hexanediol.
Example 2
The application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the modified epoxy acrylate is epoxy acrylate modified by N-hydroxymethyl acrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate.
The acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 1.5:1.6:0.8:1: 0.5.
The photoinitiator is 2-methylanthraquinone.
The adhesion promoter is aniline methyl triethoxysilane or vinyl tri (β -methoxyethoxy) silane.
The surfactant is alkylphenol polyoxyethylene.
The thixotropic agent is precipitated silica.
The dispersant is butyl stearate.
The leveling agent is polymethylphenylsiloxane.
The defoaming agent is a higher alcohol fatty acid ester compound; the film forming additive is dodecyl alcohol ester.
Example 3
The application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the modified epoxy acrylate is epoxy acrylate modified by N-hydroxymethyl acrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate.
The acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 2:1.8:1:1: 0.6.
The photoinitiator is 2, 4-dimethyl thioxanthone, acetophenone dimethyl ketal or benzil dimethyl ketal.
The adhesion promoter is 3-aminopropyl trimethoxy silane or 3-glycidyl ether oxy propyl trimethoxy silane.
The surfactant is benzyl phenol polyoxyethylene ether.
The thixotropic agent is organic bentonite.
The dispersing agent is ethylene bis stearamide.
The leveling agent is polyether polyester modified organic siloxane.
The defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether; the film-forming assistant is ethylene glycol butyl ether, dipropylene glycol monobutyl ether or tripropylene glycol n-butyl ether.
Example 4
The application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the modified epoxy acrylate is epoxy acrylate modified by N-hydroxymethyl acrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate.
The acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 2.5:2:1.2:1: 0.7.
The photoinitiator is (2, 6-dimethoxybenzoyl) -2,4, 4-pentylphosphine oxide or bis (2,4, 6-trimethylbenzoyl) -phenylphosphine oxide.
The adhesion promoter is gamma-methacryloxypropyl trimethoxy silane.
The surfactant is fatty alcohol-polyoxyethylene ether or fatty amine-polyoxyethylene ether.
The thixotropic agent is kaolin.
The dispersant is stearic acid monoglyceride or tristearin.
The leveling agent is alkyl hydroxyl modified organic siloxane.
The defoaming agent is polyoxyethylene polyoxypropylene ether; the film-forming aid is propylene glycol phenyl ether.
Example 5
The application of the UV protective oil in solving the warping of the float glass is characterized in that the UV protective oil is roll-coated on the tin surface of the float glass, and the air surface of the float glass is used for sweeping treatment, wherein the UV protective oil comprises the following raw materials in parts by weight:
the modified epoxy acrylate is epoxy acrylate modified by N-hydroxymethyl acrylamide; the modified urethane acrylate is urethane acrylate modified by ethylene glycol dimethacrylate.
The acrylic monomer is a mixture of butyl acrylate, isooctyl acrylate, dodecyl methacrylate, methyl methacrylate and hydroxypropyl methacrylate in a weight ratio of 3:2.2:1.5:1: 0.8.
The photoinitiator is 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide or 2,4, 6-trimethylbenzoyl diphenyl phosphinic acid ethyl ester.
The adhesion promoter is diethylamino-substituted methyl triethoxy silane.
The surfactant is sorbitan fatty acid ester.
The thixotropic agent is attapulgite.
The dispersing agent is microcrystalline paraffin or oxidized polyethylene wax.
The leveling agent is an acrylate leveling agent.
The defoaming agent is polyoxypropylene glycerol ether or polyoxypropylene polyoxyethylene glycerol ether; the film-forming assistant is hexanediol butyl ether acetate or 3-ethoxy ethyl propionate.
The invention roller coats the UV protective oil on the tin surface of the float glass, and the air surface of the float glass is used for the sweeping treatment, namely, the air surface is swept to one side, and the air surface is slightly damaged by a sweeping medium, so that the air surface is Na+The content is reduced, the potassium-sodium exchange of the air surface is influenced, the surface stress is just consistent with that of the tin surface, the warping degree of the chemically toughened glass is reduced, the flatness of the glass is improved, and the processing cost is low.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.