CN103254720A - Low-temperature cured water-based glass paint and preparation method thereof - Google Patents
Low-temperature cured water-based glass paint and preparation method thereof Download PDFInfo
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- CN103254720A CN103254720A CN2013101974444A CN201310197444A CN103254720A CN 103254720 A CN103254720 A CN 103254720A CN 2013101974444 A CN2013101974444 A CN 2013101974444A CN 201310197444 A CN201310197444 A CN 201310197444A CN 103254720 A CN103254720 A CN 103254720A
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Abstract
The invention provides a low-temperature cured water-based glass paint and a preparation method thereof. The low-temperature cured water-based glass paint is prepared from 15-60% of modified water-based epoxy resin, 0-10% of water-based polyurethane resin, 0-10% of amino resin, 0-25% of pigment filler and 0-2% of auxiliaries as well as a diluent. The low-temperature cured water-based glass paint is strong in stability and has excellent normal-temperature self-crosslinking property; therefore, the adhesive force of the coating with the glass can be improved; and the low-temperature cured water-based glass paint is directly sprayed on the surface of a glass product at normal temperature and then thermally cured, so that a high-quality glazed glass wine product is produced.
Description
Technical field
The present invention relates to the painting technical field, be specifically related to a kind of aqueous environment protection coating for glass article surface and preparation method thereof
Technical background
Stupalith has widely in people produce and live to be used, and except the use on feeder, ornament, also plays an important role in the development of science, technology.Process for processing pottery and high temperature gloss firing (envelope glaze) need to consume a large amount of energy, from little extremely several tons big fineness that are ground to regulation to up to a hundred tons raw material, kiln high-temperature firing more than 1,000 degree polishes under press then, directly and has indirectly consumed a large amount of coals.Be packaged as example with Liquor, according to statistics, the output of national liquor in 2010 is 8,910,000 kilolitres (amounting to about 10,000,000,000 bottles), wherein 28% is ceramic wine bottle, producing these ceramic wine bottles needs energy input to amount to standard coal above 2,800,000 tons, and the ceramic wine bottle after using can't recycling, causes huge burden to environment.
But then, China has long ceramic cultural tradition, in very long historical long river, the Chinese ancestors of industry and intelligence cut the earth into gold, particular aesthetics temperament and interest in the oriental cultural is penetrated in the porcelain making art, it had both comprised numerous people to the pursuit of life Sino-U.S., again with the glamour of uniqueness as Sinitic carrier.This major reason that also stupalith is used widely in the modern life just.
Therefore, in order to satisfy people for the pursuit of quality of the life, accomplish " the low-carbon (LC) life " of energy-saving and emission-reduction again, so people select to have vial outside surface sprayed coating, form the effect of envelope glaze at the outside surface of glass, thereby can substitute ceramic high temperature colored glaze bottle.This product innovation and application thereof have plurality of advantages such as low-carbon (LC), safety and environmental protection.Through estimation comprehensively; whole low temperature envelope glaze type glass wine bottle only is 1/10 of pottery envelope glaze bottle energy consumption from the energy consumption that ore is worked into the finished product; can save a large amount of energy; and envelope glaze glass wine bottle can reclaim reprocessing, has very significant meaning for energy-saving and emission-reduction and environment protection.
Because at present glass paint mostly is solvent based coating greatly, need use during application the harmful benzene,toluene,xylene of human body and environment etc. is contained benzene solvent; In addition, the bonding strength of the coating that has is low, and is less to the sticking power of various glass material products, so the application of inapplicable glass material product.And there is water-fast poor, the high shortcoming of construction solidification value in present watersoluble modified epoxypaint on the market.
So the present invention studies a kind of aqueous environment protection glass with low thermo-paint, is the product that ceramic high temperature colored glaze and water-borne coatings mutually combine, and is two new results that the technology in the different field organically blends.Make this coating can be painted on glass article surface, thermofixation at normal temperatures, form high-quality envelope glaze glasswork.
Summary of the invention
The purpose of this invention is to provide a kind of low-temperature curing aqueous glass coating and preparation method thereof, reach the purpose that just can form the envelope glaze at low temperatures at the surface cure of glasswork.
Technical scheme of the present invention is as follows:
A kind of low-temperature curing aqueous glass coating is prepared from by mass percentage by following raw material: modified aqueous epoxy resin 15 ~ 60%, and waterborne polyurethane resin 0 ~ 10%, aminoresin 0 ~ 10%, color stuffing 0 ~ 35%, auxiliary agent 0 ~ 2%, surplus is thinner;
Described modified aqueous epoxy resin is to be prepared from by mass percentage by following raw material: mixed solvent 10.0 ~ 30.0%, Resins, epoxy 15.0 ~ 40.0%, mix monomer 5.0 ~ 30.0%, initiator 0.01 ~ 1.0%, neutralizing agent 0.1 ~ 5.0%, amino modified silane 0.1 ~ 5.0%, water 10.0 ~ 30.0%;
Described mix monomer be acrylic acid or the like, unsaturated amides, vinyl-based at least two kinds.
Further scheme, described waterborne polyurethane resin is water-based negatively charged ion or non-ionic polyurethane resin;
Described aminoresin is the complex etherified aminoresin of high imido fundamental mode;
Described color stuffing is at least a in pigment or the filler;
Described auxiliary agent is a kind of in catalyzer, flow agent, dispersion moisture agent, defoamer, conductive agent, adhesion promoter or the mask agent;
Described thinner is at least a in water, methyl alcohol, ethanol, propyl carbinol, propylene glycol monomethyl ether, 1-Methoxy-2-propyl acetate, butyl glycol ether, the 2-Butoxyethyl acetate.
Further, described pigment is chosen from Fe series pigments, chromate pigments, the blue or green pigment of phthalein, titanium dioxide or metallized dye; Described filler is talcum powder, zinc sulfide white or flatting silica.
Further, described mixed solvent is in propyl carbinol, butyl glycol ether, 2-Butoxyethyl acetate, propylene glycol monomethyl ether, 1-Methoxy-2-propyl acetate, Virahol, the ethanol at least two kinds;
Described initiator is at least a in azo-bis-isobutyl cyanide, benzoyl peroxide, dicumyl peroxide, methylethyl ketone peroxide, di-cyclohexylperoxy dicarbonate, tertbutyl peroxide, the azo-bis-iso-dimethyl;
Described neutralizing agent is NaHCO
3, ammoniacal liquor, triethylamine, N, N-dimethylethanolamine or 2-amino-2-methyl-1-propanol;
Described amino modified silane is γ-aminopropyl methyldiethoxysilane, γ-An Bingjisanyiyangjiguiwan or N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxysilane.
Preferred version is, described mix monomer is preferably acrylate, unsaturated amides, vinyl monomer, fluorine silicon class function monomer etc., specifically comprise vinylformic acid, methacrylic acid, butyl acrylate, butyl methacrylate, isobornyl acrylate, isobornyl methacrylate, glycidyl acrylate, glycidyl methacrylate, vinylbenzene, vinyl toluene, methyl acrylate, methyl methacrylate, Isooctyl acrylate monomer, Isooctyl methacrylate, the vinylformic acid fluorinated ester, the methacrylic acid fluorinated ester, Hydroxyethyl acrylate, hydroxyethyl methylacrylate, Propylene glycol monoacrylate, Rocryl 410, acrylamide, in the n-methylolacrylamide at least two kinds.
Amino modified silane is not defined as mono amino silane or two aminosilane among the present invention, is not defined as methoxy or ethoxy or both mixtures yet.
Resins, epoxy is contained all possible Resins, epoxy from the lower molecular weight to the high molecular.
Waterborne polyurethane resin is a kind of superfine aliphatic polyurethane dispersion liquid, is mainly used in promoting the then property of covering with paint, has the ultra-fine film that causes and extend, excellent winter hardiness, and the present invention is preferably water-based negatively charged ion or non-ionic polyurethane resin.Preferred with KTC200, the KTC303 of Ketian Chemical Co., Ltd., Hefei City production and Bayhydrol PR340, Bayhydrol XP 2593 one or more compositions of Beyer Co., Ltd in specific embodiment.
The complex etherified aminoresin of the preferred high imido fundamental mode of aminoresin, more preferably CYMEL 250, and CYMEL 254;
Corresponding pigment be can add among the present invention according to client's needs and the former coating of different colours, pigment iron clad series pigments such as red iron oxide, iron oxide yellow, iron oxide black prepared; Chromate pigments such as lead-chrome yellow, molybdenum red and chrome green; The blue or green pigment of phthalein, titanium dioxide, metallized dye etc.Filler and auxiliary agent also are to carry out selectivity according to the performance of processing needs and the finished product to add.
Another object of the present invention provides a kind of preparation as above-mentioned low-temperature curing aqueous glass coating, may further comprise the steps:
(1) preparation modified aqueous epoxy resin:
By proportioning Resins, epoxy is dissolved in the mixed solvent, temperature rises to 80 ~ 120 ℃, drips the mix monomer that is dissolved with initiator then, dropwises back insulation 1 ~ 5 hour, gets modified epoxy grafted propylene acid resin; Cool to 45 ~ 65 ℃ again, adding neutralizing agent and amino modified silane carried out the chain extension modified-reaction 1 ~ 6 hour in modified epoxy grafted propylene acid resin, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
Be mixed together by modified aqueous epoxy resin and waterborne polyurethane resin, aminoresin, color stuffing, auxiliary agent, the thinner of proportioning with (1) preparation, mix afterwards material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Further, the dropping temperature of mix monomer is 60 ~ 150 ℃ in the described step (1), and the time is 1 ~ 4 hour.
The present invention provides a kind of novel aqueous glass coating, with one or more pure ether solvent heating for dissolving Resins, epoxy, drip the acrylate monomer grafting Resins, epoxy that the mixing that is dissolved with initiator contains functional group then, obtain modified epoxy grafted propylene acid resin; With neutralizing agent this grafting Resins, epoxy that neutralizes, carry out the open loop epoxy reaction with amino modified silane more then, chain extension branching grafting Resins, epoxy obtains modified aqueous epoxy resin.Be the main body film-forming resin at last again with the modified aqueous epoxy resin, auxiliary other waterborne polyurethane resins, aminoresin, color stuffing and auxiliary agent, modulation obtains the good aqueous glass coating of workability.
So the present invention has following beneficial effect:
1, the aqueous glass coating of the present invention's preparation, thermofixation is carried out on the surface that can be painted on glasswork at normal temperatures, can produce high-quality envelope glaze glasswork.
2, the stability of the modified aqueous epoxy resin of the present invention's preparation is strong, can stablize and deposit 1 year; And have good ambient self-crosslinking characteristic, can need not or add solidifying agent such as aminoresin, modified amine on a small quantity to obtain the splendid paint coatings of over-all properties.
3, owing to adopt the acrylate monomer grafting Resins, epoxy that contains functional group among the present invention, introduce multiple functional group in the grafted monomer, these functional groups not only can realize the Water-borne modification of epoxy, and have good ambient self-crosslinking character, improve the stability of coating.In addition, the aqueous glass coating of the present invention's preparation is compared with aqueous glass baking vanish in the past, can reduce construction temperature 10 ~ 40 degree.
4, aqueous glass coating of the present invention is with amino modified silane chain extension graft type Resins, epoxy, introduces siloxane groups, greatly improves the sticking power of coating and glass.In addition, the high molecular expoxy resin after the chain extension has excellent mechanical property.
5, do not add any environmentally harmful benzene-type products in the formulation for coating material of the present invention, so it is harmless to environment-friendly.
Embodiment:
The present invention is further elaborated below in conjunction with embodiment.
The preparation method of low-temperature curing aqueous glass coating adopts following steps among the following embodiment:
(1) preparation modified aqueous epoxy resin:
By proportioning Resins, epoxy is dissolved in the mixed solvent, temperature rises to 80 ~ 120 ℃, drips the mix monomer that is dissolved with initiator then, and dropping temperature is 60 ~ 150 ℃, and the time is 1 ~ 4 hour; Dropwise back insulation 1 ~ 5 hour, get modified epoxy grafted propylene acid resin; Cool to 45 ~ 65 ℃ again, adding neutralizing agent and amino modified silane carried out the chain extension modified-reaction 1 ~ 6 hour in modified epoxy grafted propylene acid resin, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
Be mixed together by modified aqueous epoxy resin and waterborne polyurethane resin, aminoresin, color stuffing, auxiliary agent, the thinner of proportioning with (1) preparation, mix afterwards material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Pigment is that to adopt red iron oxide, iron oxide yellow, iron oxide black be that 2:7:1 constitutes by mass ratio among the following embodiment, or is that 3:6:1 constitutes by red iron oxide, iron oxide yellow, iron oxide black by mass ratio;
Waterborne polyurethane resin is elected KTC200, the KTC303 of Ketian Chemical Co., Ltd., Hefei City production and Bayhydrol PR340, the Bayhydrol XP 2593 of Beyer Co., Ltd as;
CYMEL 250 in the complex etherified aminoresin of the preferred high imido fundamental mode of aminoresin, CYMEL 254
It is mixture or the water that 7:1:1:1 forms by mass ratio that thinner is selected water, ethanol, propyl carbinol, butyl glycol ether for use;
Filler is selected 2000 purpose talcum powder for use;
Selection of auxiliary defoamer BYK025, BYK022, wetting agent BYK-345, BYK-333.
Embodiment 1:
(1) preparation modified aqueous epoxy resin:
By proportioning 35% Resins, epoxy is dissolved in 20% propyl carbinol and the 10% butyl glycol ether mixed solvent, temperature rises to 100 ℃, drip the mix monomer of 3% vinylformic acid, 5% Hydroxyethyl acrylate, 1% glycidyl methacrylate, 3% methyl methacrylate and the 3% vinylbenzene composition that are dissolved with 0.01% initiator benzoyl peroxide then, dropping temperature is 120 ℃, and the time is 2 hours; Dropwise back insulation 4 hours, get modified epoxy grafted propylene acid resin; Cool to 50 ℃ again, adding 4% neutralizing agent triethylamine and 2% amino modified silane γ-aminopropyl methyldiethoxysilane were carried out the chain extension modified-reaction 4 hours in modified epoxy grafted propylene acid resin, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
(red iron oxide: iron oxide yellow: iron oxide black=2:7:1), defoamer BYK025 are 0.2 part with 56% modified aqueous epoxy resin of (1) preparation and 10% aminoresin, 15% pigment by proportioning, wetting agent BYK-331 is that 0.8 part, surplus are that thinner is mixed together, mix the back material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Adopt spraying coating process to construct in the glass surface of cleaning the low-temperature curing aqueous glass coating that makes, condition of cure is 120 ℃ and toasted 30 minutes down.
Embodiment 2:
(1) preparation modified aqueous epoxy resin:
By proportioning 15% Resins, epoxy is dissolved in 10% Virahol and the 10% propylene glycol monomethyl ether mixed solvent, temperature rises to 80 ℃, drip the mix monomer that 6% methacrylic acid, 10% butyl acrylate, 2% isobornyl methacrylate, 12% Isooctyl methacrylate be dissolved with 0.1.% initiator benzoyl peroxide formed then, dropping temperature is 80 ℃, and the time is 3 hours; Dropwise back insulation 4 hours, get modified epoxy grafted propylene acid resin; Cool to 50 ℃ again, add 5% neutralizing agent N in modified epoxy grafted propylene acid resin, N-dimethylethanolamine and 2% amino modified silane γ-An Bingjisanyiyangjiguiwan carried out the chain extension modified-reaction 2 hours, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
(red iron oxide: iron oxide yellow: iron oxide black=3:6:1), 11% 2000 order talcum powder, defoamer BYK022 are 0.2 part with 30% modified aqueous epoxy resin of (1) preparation and 10% waterborne polyurethane resin, 10% pigment by proportioning, wetting agent BYK-333 is that 0.8 part, surplus are that thinner is mixed together, mix the back material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Adopt spraying coating process to construct in the glass surface of cleaning the low-temperature curing aqueous glass coating that makes, warm condition from dried solidify envelope glaze glasswork.
Embodiment 3:
(1) preparation modified aqueous epoxy resin:
By proportioning 40% Resins, epoxy is dissolved in 20% propylene glycol monomethyl ether, the 15% 1-Methoxy-2-propyl acetate mixed solvent, temperature rises to 80 ℃, drip the mix monomer that 3% methacrylic acid, 5% Rocryl 410,1% methacrylic acid fluorinated ester, 6% hydroxyethyl methylacrylate be dissolved with 1.0% initiator dicumyl peroxide formed then, dropping temperature is 120 ℃, and the time is 3 hours; Dropwise back insulation 3 hours, get modified epoxy grafted propylene acid resin; Cool to 45 ℃ again, adding 5% neutralizing agent ammoniacal liquor and 2% amino modified silane γ-An Bingjisanyiyangjiguiwan carried out the chain extension modified-reaction 6 hours in modified epoxy grafted propylene acid resin, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
(red iron oxide: iron oxide yellow: iron oxide black=2:7:1), 25% 2000 order talcum powder, defoamer BYK025 are 0.8 part with 15% modified aqueous epoxy resin of (1) preparation and 10% waterborne polyurethane resin, 10% aminoresin, 10% pigment by proportioning, wetting agent BYK-345 is that 1.2 parts, surplus are that thinner is mixed together, mix the back material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Adopt the technology of dip-coating to construct in the glass surface of cleaning the low-temperature curing aqueous glass coating that makes, condition of cure is that baking must be sealed the glaze glasswork in 20 minutes under 150 ℃.
Embodiment 4:
(1) preparation modified aqueous epoxy resin:
By proportioning 40% Resins, epoxy is dissolved in 10% butyl glycol ether, 10% 2-Butoxyethyl acetate, 11% alcohol mixed solvent, temperature rises to 120 ℃, drip 3% vinyl toluene that is dissolved with 0.5% initiator tertbutyl peroxide then, the mix monomer that 5% methyl acrylate, 10% butyl methacrylate, 7% Propylene glycol monoacrylate, 5% Rocryl 410 are formed, dropping temperature is 150 ℃, and the time is 2 hours; Dropwise back insulation 5 hours, get modified epoxy grafted propylene acid resin; Cool to 65 ℃ again, in modified epoxy grafted propylene acid resin, add 5% neutralizing agent NaHCO
3Carry out the chain extension modified-reaction 1 hour with 2% amino modified silane N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxysilane, add water at last, obtain modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
By proportioning with 60% modified aqueous epoxy resin and 10% waterborne polyurethane resin of (1) preparation, 10% aminoresin, 10% pigment (red iron oxide: iron oxide yellow: iron oxide black=2:7:1), surplus are that thinner is mixed together, mix afterwards material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Adopt the technology of roller coating to construct in the glass surface of cleaning the low-temperature curing aqueous glass coating that makes, condition of cure is that baking must be sealed the glaze glasswork in 8 minutes under 190 ℃.
Embodiment 5:
(1) preparation modified aqueous epoxy resin:
By proportioning 40% Resins, epoxy is dissolved in 15% Virahol, 15% alcohol mixed solvent, temperature rises to 120 ℃, drip 5% methacrylic acid that is dissolved with 0.5% initiator tertbutyl peroxide, the mix monomer that 10% butyl methacrylate is formed then, dropping temperature is 150 ℃, and the time is 2 hours; Dropwise back insulation 5 hours, get modified epoxy grafted propylene acid resin; Cool to 65 ℃ again, adding 5% neutralizing agent 2-amino-2-methyl-1-propanol and 2% amino modified silane N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxysilane carried out the chain extension modified-reaction 1 hour in modified epoxy grafted propylene acid resin, add water at last, obtain modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
By proportioning with 60% modified aqueous epoxy resin and 10% waterborne polyurethane resin of (1) preparation, 10% aminoresin, 10% pigment (red iron oxide: iron oxide yellow: iron oxide black=2:7:1), surplus are that diluent water is mixed together, mix afterwards material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
Adopt the technology of roller coating to construct in the glass surface of cleaning the low-temperature curing aqueous glass coating that makes, condition of cure is that baking must be sealed the glaze glasswork in 10 minutes under 180 ℃.
Reference examples 1
According to component of the present invention and proportioning, but amino modified silane of no use prepares modified aqueous epoxy resin, and its concrete prescription is:
20.0 parts of propyl carbinols
10.0 parts of Virahols
35.0 parts of Resins, epoxy E21
3.0 parts of methacrylic acids
5.0 parts of Rocryl 410s
1.0 parts of methacrylic acid hexafluoro butyl esters
6.0 parts of methyl methacrylates
1.0 parts of azo-bis-isobutyl cyanides
4.0 parts of dimethylethanolamines
15.0 parts in water
Amount to 100.0 parts
With propyl carbinol, propylene glycol monomethyl ether is mixed solvent, temperature rises to 80 ℃, dissolved epoxy drips the mix monomer that is dissolved with initiator then, drips the concrete processing condition control of mix monomer and finishes 80 ℃ of droppings in following 3 hours, dropwise back insulation 4 hours, cool to 50 ℃ again, add triethylamine neutralizing agent and water, obtain the modified aqueous epoxy resin that needs.
The water-borne coatings product formula:
56.0 parts of modified aqueous epoxy resins
8.0 parts of waterborne polyurethane resins
10.0 parts of pigment
11.0 parts of fillers
1.0 parts of auxiliary agents
14.0 parts of thinners
Amount to 100.0 parts
Adopt spraying coating process to construct in the glass surface of cleaning then, condition of cure is 120 ℃ and toasted 10 minutes down.
Reference examples 2
According to component of the present invention and proportioning, but modified monomer of no use prepares modified aqueous epoxy resin, and its concrete prescription is:
20.0 parts of propyl carbinols
20.0 parts of butyl glycol ethers
35.0 parts of Resins, epoxy E21
5.0 parts of γ-aminopropyl methyldiethoxysilane
1.0 parts of azo-bis-isobutyl cyanides
Water surplus
With propyl carbinol, butyl glycol ether is mixed solvent, and temperature rises to 100 ℃, dissolved epoxy, drip the mix monomer of initiator then, drip the concrete processing condition control of mix monomer and finish 120 ℃ of droppings in following 2 hours, dropwise back insulation 4 hours, cool to 50 ℃ again, add the triethylamine neutralizing agent, add aminosilane reaction 2 hours then, carry out the chain extension modification, add water at last, obtain the modified aqueous epoxy resin that needs.
The water-borne coatings product formula:
56.0 parts of modified aqueous epoxy resins
8.0 parts of waterborne polyurethane resins
6.0 parts in aminoresin
15.0 parts of color stuffings
1.0 parts of auxiliary agents
The thinner surplus
Adopt spraying, the technology of dip-coating or roller coating is constructed in the glass surface of cleaning, and condition of cure is 120 ℃ and toasted 10 minutes down.
The coating of above-described embodiment 1-5 and Comparative Examples 1-2 preparation is applied to must seals the glaze glasswork after glass surface solidifies, the performances such as adhesive force of coatings, water tolerance, ethanol-tolerant and hardness of envelope glaze glasswork are compared, shown in the table specific as follows:
As can be seen from the above table, the coating of the present invention's preparation is obviously better than the performance of the coating that reference examples 1, reference examples 2 make, and it reaches 0 grade standard at strong adhesion on glass; And water tolerance is not less than 240 hours, will exceed more than 10 times than the water tolerance of reference examples; In addition, the ethanol-tolerant of coating of the present invention and hardness all are higher than reference examples.
The invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (7)
1. a low-temperature curing aqueous glass coating is characterized in that: be prepared from by mass percentage by following raw material: modified aqueous epoxy resin 15 ~ 60%, waterborne polyurethane resin 0 ~ 10%, aminoresin 0 ~ 10%, color stuffing 0 ~ 35%, auxiliary agent 0 ~ 2%, surplus is thinner;
Wherein said modified aqueous epoxy resin is to be prepared from by mass percentage by following raw material: mixed solvent 10.0 ~ 30.0%, Resins, epoxy 15.0 ~ 40.0%, mix monomer 5.0 ~ 30.0%, initiator 0.01 ~ 1.0%, neutralizing agent 0.1 ~ 5.0%, amino modified silane 0.1 ~ 5.0%, water 10.0 ~ 30.0%;
Described mix monomer be acrylic acid or the like, unsaturated amides, vinyl-based at least two kinds.
2. according to the described low-temperature curing aqueous glass of claim 1 coating, it is characterized in that: described waterborne polyurethane resin is water-based negatively charged ion or non-ionic polyurethane resin;
Described aminoresin is the complex etherified aminoresin of high imido fundamental mode;
Described color stuffing is at least a in pigment or the filler;
Described auxiliary agent is one or more combinations in catalyzer, flow agent, dispersion moisture agent, defoamer, conductive agent, adhesion promoter or the mask agent;
Described thinner is at least a in water, methyl alcohol, ethanol, propyl carbinol, propylene glycol monomethyl ether, 1-Methoxy-2-propyl acetate, butyl glycol ether, the 2-Butoxyethyl acetate.
3. according to the described low-temperature curing aqueous glass of claim 2 coating, it is characterized in that: described pigment is chosen from Fe series pigments, chromate pigments, the blue or green pigment of phthalein, titanium dioxide or metallized dye; Described filler is talcum powder, zinc sulfide white or flatting silica.
4. according to the described low-temperature curing aqueous glass of claim 1 coating, it is characterized in that: described mixed solvent is at least two kinds in propyl carbinol, butyl glycol ether, 2-Butoxyethyl acetate, propylene glycol monomethyl ether, 1-Methoxy-2-propyl acetate, Virahol, the ethanol;
Described initiator is at least a in azo-bis-isobutyl cyanide, benzoyl peroxide, dicumyl peroxide, methylethyl ketone peroxide, di-cyclohexylperoxy dicarbonate, tertbutyl peroxide, the azo-bis-iso-dimethyl;
Described neutralizing agent is NaHCO
3, ammoniacal liquor, triethylamine, N, N-dimethylethanolamine or 2-amino-2-methyl-1-propanol;
Described amino modified silane is γ-aminopropyl methyldiethoxysilane, γ-An Bingjisanyiyangjiguiwan or N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxysilane.
5. according to the described low-temperature curing aqueous glass of claim 1 coating, it is characterized in that: described mix monomer is preferably vinylformic acid, methacrylic acid, butyl acrylate, butyl methacrylate, isobornyl acrylate, isobornyl methacrylate, glycidyl acrylate, glycidyl methacrylate, vinylbenzene, vinyl toluene, methyl acrylate, methyl methacrylate, Isooctyl acrylate monomer, Isooctyl methacrylate, the vinylformic acid fluorinated ester, the methacrylic acid fluorinated ester, Hydroxyethyl acrylate, hydroxyethyl methylacrylate, Propylene glycol monoacrylate, Rocryl 410, acrylamide, in the n-methylolacrylamide at least two kinds.
6. one kind prepares low-temperature curing aqueous glass coating according to claim 1, it is characterized in that: may further comprise the steps:
(1) preparation modified aqueous epoxy resin:
By proportioning Resins, epoxy is dissolved in the mixed solvent, temperature rises to 80 ~ 120 ℃, drips the mix monomer that is dissolved with initiator then, dropwises back insulation 1 ~ 5 hour, gets modified epoxy grafted propylene acid resin; Cool to 45 ~ 65 ℃ again, adding neutralizing agent and amino modified silane carried out the chain extension modified-reaction 1 ~ 6 hour in modified epoxy grafted propylene acid resin, added water at last, obtained modified aqueous epoxy resin;
(2) preparation low-temperature curing aqueous glass coating:
Be mixed together by modified aqueous epoxy resin and waterborne polyurethane resin, aminoresin, color stuffing, auxiliary agent, the thinner of proportioning with (1) preparation, mix afterwards material with evenly disperse in the sand mill low-temperature curing aqueous glass coating.
7. method according to claim 6 is characterized in that: the dropping temperature of mix monomer is 60 ~ 150 ℃ in the described step (1), and the time is 1 ~ 4 hour.
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| CN109824837A (en) * | 2018-12-28 | 2019-05-31 | 广东省石油与精细化工研究院 | A kind of aqueous anti-fouling type metal baking finish of high-strength and high ductility and preparation method thereof |
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| CN109824837A (en) * | 2018-12-28 | 2019-05-31 | 广东省石油与精细化工研究院 | A kind of aqueous anti-fouling type metal baking finish of high-strength and high ductility and preparation method thereof |
| CN109824837B (en) * | 2018-12-28 | 2021-08-03 | 广东省石油与精细化工研究院 | High-strength high-toughness water-based antifouling metal baking paint and preparation method thereof |
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