CN103937354B - A kind of preparation method of high rigidity water-based glass baking varnish - Google Patents
A kind of preparation method of high rigidity water-based glass baking varnish Download PDFInfo
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- CN103937354B CN103937354B CN201310495873.XA CN201310495873A CN103937354B CN 103937354 B CN103937354 B CN 103937354B CN 201310495873 A CN201310495873 A CN 201310495873A CN 103937354 B CN103937354 B CN 103937354B
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Abstract
The present invention relates to a kind of preparation method of high rigidity water-based glass baking varnish, formed by nanometer water acrylic resin, low methyl-etherified amino resins, watersoluble polyurethane acrylic acid hybrid, Hardening resin, colouring agent, base material wetting agent, adhesive agent, acid catalyst, coalescents, defoamer, anti-zoned levelling agent, thickener, bactericide, PH conditioning agent, cosolvent and water; The low VOC of Water-based glass baking paint that the present invention makes, environmentally safe, to operating personnel's nonhazardous, film adhesive is strong, pliability good and high rigidity, excellent wearability, resistance to water, alcohol resistance and salt fog resistance, construction is simple, stable storage. The hardness of paint film that the present invention makes, up to more than 5H, has the scratch resistance anti-wear performance of enamel film; The glassware of making reaches the effect of blue and white porcelain, Franc colored glaze porcelain, white glaze porcelain; The surface protection of doing that is widely used in the goods such as bottle, scent flask, glassware, light fixture, woodenware, metal, plastics is decorated.
Description
Technical field
The present invention relates to a kind of preparation method of aqueous glass paint, relate in particular to one and be applicable to variousThe high hardness water baking paint of glass baseplate.
Background technology
The coating protection of glass and glassware has widely and needs at industrial and civil area with decorationAsk, as bottle, scent flask, lamp decoration, house ornamentation glassware and glass apparatus etc. all need to apply and protect on surfaceSheath and decorative coveringn. At present, the glass coating of domestic application mostly is solvent-borne type product, along with people's environmental protectionPerfecting of the raising of consciousness and environmental law Laws & Regulations, water paint is subject to great weight in application on glassDepending on. Adopt the acrylic resin of polyurethane aqueous dispersion body, water-soluble polypropylene acid resin, ammonia ester type and modificationIn glass substrate, there is adhesive force, alcohol resistance, resistance to water, abrasion performance in the mono-component aqueous glass lacquer of preparationThe shortcoming such as the poor and hardness of property is low. Aqueous dual-component cold curing glass lacquer too short working life in work progressCan cause certain difficulty to construction, also cause that the waste of paint vehicle and job site mix unequal difficulty simultaneouslyTopic.
Summary of the invention
The present invention selects self-cross linking type, formaldehydeless core-shell copolymerized nano-water soluble acrylate,The membrane formation mechanism of this nano-scale water acrylate and common acrylic emulsion micelle flocculate and break emulsion is notWith, the film forming mechanism of employing molecular level, along with evaporation of water, the specific functional groups in adjacent polymeric thing is sent outRaw physicochemical gathering, makes water-borne acrylic resin system produce physical being cross-linked, and this physics is handed overThe critical solid content of connection, the critical solid content of assembling than emulsion particle is much lower, in other words, this crosslinkedPhenomenon just can occur in the time that water content is higher, the result that the enhancing effect that system is brought is assembled than common micelleShift to an earlier date, the surface drying time of system is faster than general aqueous acrylic emulsion. After nano-resin film forming, filmIn structure, containing nanometer microfacies, hardness, glossiness and the pliability of film are had than light water based acrylic resinImprove.
Curing agent is chosen with polymerization high methylol group type part methyl-etherified melmac, contains alcoxylYlmethyl and methylol, the in addition imino group of minute quantity. Because alkoxy methyl is mainly the base of cross-linking reactionGroup, need higher temperature that cross-linking reaction could occur, and the reactivity of methylol is greater than alkoxy methyl,The increase of methylol group content in amino resins, can improve curing reaction speed and reduce baking temperature, simultaneouslyThe imino group that it contains minute quantity, can reduce self-polymeric reaction; Low methyl-etherified amino resins forms after solidifyingFilm has excellent resistance to ethanol, hardness and gloss.
Watersoluble polyurethane acrylic acid hybrid resin has high rigidity, compatibility is good, adhesive force is excellent,Can improve pliability, colour retention, hardness, wearability and the chemical resistance of paint film.
Hardening resin is selected aqueous inorganic silicones, and after hot setting, film has high hardness,Can reach 6~9H, highly stable, the lower hardness of hot and cold alternately variation is identical. High temperature resistant, can be at 300~600 DEG CUnder condition, use for a long time. Face light, plentiful, wear-resisting, damage resistant, resistance to chemical attack, ultraviolet aging resistanceAnd heat ageing, water-fast, print resistance.
In order to solve technical problem recited above, the present invention takes following technical scheme: the present inventionRelate to a kind of high rigidity water-based glass baking varnish, its basic recipe is: nanometer water acrylic resin 40%~60%, low methyl-etherified amino resins 7~15%, watersoluble polyurethane acrylic acid hybrid 0~15%, Hardening treeFat 5~12%, pigment or colouring agent 0%~30%, base material wetting agent 0.1%~0.6%, adhesive agent 0.2%~1.5%, acid catalyst 0.2%~1%, coalescents 2%~12%, defoamer 0.1%~0.5%, anti-zoned streamFlat agent 0.1%~0.5%, thickener 0.2%~1.0%, bactericide 0.1%~0.3%, PH conditioning agent 0.5%~5%, cosolvent 2%~10%, deionized water 2%~25%.
Wherein, water-borne acrylic resin is selected self-cross linking type that vitrification point is lower, formaldehydelessCore-shell copolymerized nano-water soluble acrylate.
Amino resins is selected polymerization high methylol group type part methyl-etherified melmac.
Hardening resin is selected aqueous inorganic silicones.
Pigment or colouring agent select that compatibility is good, high temperature resistant, resistance to ag(e)ing, environmental protection, fineness≤15 μTitanium dioxide, carbon black, organic pigment, dyestuff, transparent pigment, pearlescent pigment, polygonal effect pigment and goldBelong to a kind of or its combination in pigment aqueous color paste.
Adhesive agent are selected and are contained amino, two amino, methacrylate based, epoxy radicals, etheneThe one of the siloxanes coupling agent of base, chlorination alkyl etc.
Coalescents is selected ethanol, isopropyl alcohol, propane diols, sec-butyl alcohol, n-butanol, propane diols firstA kind of or its combination of ether, propandiol butyl ether, alcohol ester-12, propane diols phenylate, diethylene glycol butyl ether.
Acid catalyst is selected p-methyl benzenesulfonic acid, DBSA, dinonylnaphthalene sulfonic acid, twoThe one of nonyl naphthalenedisulfonic acid.
PH conditioning agent is chosen with ammoniacal liquor, triethylamine, triethanolamine, N, N-dimethylethanolamine,The one of 2-amino-2-methyl-1-propanol.
The present invention proposes a kind of preparation method of high rigidity water-based glass baking varnish, its preparation technology asUnder: by formulation weight percentage, deionized water, wetting agent, defoamer mixing and stirring, addWater-borne acrylic resin, amino resins, watersoluble polyurethane acrylic acid hybrid, aqueous inorganic silicones, thenAdd coalescents, acid catalyst, levelling agent, thickener, anti-settling agent, PH conditioning agent to stir, rootAdd pigment or colouring agent according to needs, moisturizing, froth breaking, be transferred to the viscosity of regulation, make a kind of high hardness waterProperty glass baking varnish.
The present invention also provides a kind of coating process of high rigidity water-based glass baking varnish, comprises the following steps:Before application, must carry out cleaning to ground, fill and lead up gap and aperture with putty, after being dried, polish flat;By Water-based glass baking paint brushing, roller coating or spray on the ground of handling well, control build at 8~12 μ mBetween; Place after 5~15min or surface drying in room temperature; Brushing or spraying second water-based stoving paint, control dry filmThickness is between 8~12 μ m; As required or the surface appearance of coating film whether determine Pen tri-roads, to controlBuild 10~50 μ m; After surface drying, be placed in the baking oven of 160~180 DEG C and toast 15~25min.
The low VOC of water-based high rigidity glass baking varnish that the present invention makes, environmentally safe, to operationPersonnel's nonhazardous, film adhesive is strong, pliability good and high rigidity, excellent wearability, resistance to water, resistance toAlcohol and salt fog resistance, construction is simple, stable storage. The hardness of paint film that the present invention makes is up to more than 5H,There is the scratch resistance anti-wear performance of enamel film; The glassware of making reaches blue and white porcelain, Franc colored glaze porcelain, whiteThe effect of vitreous enamel. Be widely used in bottle, scent flask, glassware, light fixture, woodenware, metal, plastics etc.The surface protection of doing of goods is decorated.
Detailed description of the invention
High rigidity water-based glass baking varnish is prepared material according to the component formula of table 1 and is implemented.
Four high rigidity water-based glass baking varnish embodiment component formulas of table 1
Embodiment 1:
Press formulation weight ratio deionization according to the 1 high rigidity water-based white glass baking vanish of example in table 1Water adds in Scattered Kettle, adds bactericide, propane diols, wetting agent, adhesive agent, acid catalyst to stir under stirringMix and disperse 30~40min, add under the low speed water-borne acrylic resin, amino resins, aqueous polyurethane propyleneAcid hybrid, aqueous inorganic silicones stir, and add water-based titanium dioxide slurry, PH conditioning agent, defoamer,Then at the uniform velocity add coalescents, levelling agent, thickener, the good viscosity of stirring and adjusting and pH value, make onePlant high rigidity water-based white glass baking vanish.
Embodiment 2:
Embodiment 2 high rigidity water-based black glass baking vanish preparation processes are with reference to embodiment 1.
Embodiment 3:
Embodiment 3 high rigidity water-based aurene baking vanish preparation processes are with reference to embodiment 1.
Embodiment 4:
Embodiment 4 high rigidity water-based clear glass baking vanish preparation processes are with reference to embodiment 1.
According to relevant national standard, the film performance of high rigidity water-based glass baking varnish of the present invention is enteredRow detects, and testing result is as shown in table 2.
Table 2 Water-based glass baking paint film performance testing result
Test item | Testing result | Examination criteria |
Paint film appearance | Smooth, smooth, plentiful | Range estimation |
Pencil hardness | ≥5H | GB/T6739-2006 |
Adhesive force, draws circle method | 1 grade | GB/T9286-1998 |
Pliability | ≤1mm | GB/T1731-1993 |
Resistance to impact | 50kg·cm | GB/T1732-1993 |
60 ° of gloss | >96 | GB/T9754-1988 |
Resistance to water | 168h is without extremely | GB/T1733—1993 |
Alkali resistance, 0.1%NaOH | 168h is without extremely | GB9274 |
Resistance to salt water, 3%NaCl | 168h is without extremely | GB/T10834-1989 |
Salt fog resistance | 96h is without extremely | GB/T1771-1991 |
Resistance to ethanol, 50%C2H5OH | 168 without abnormal | GB/T1763—1979 |
Wearability (back and forth) | > 160 times | GB/T1768—1979 |
Although the present invention has been explained in detail and has quoted as proof embodiment, general for this areaLogical technical staff, various schemes, amendment and the change that obviously can make according to above-mentioned explanation, all shouldWithin being included in the scope of claim.
Claims (6)
1. a high rigidity water-based glass baking varnish, is characterized in that: by weight percentage, comprise following groupPoint: nanometer water acrylic resin 40%~60%, low methyl-etherified amino resins 7~15%, aqueous polyurethaneAcrylic acid hybridisation body 0~15%, Hardening resin 5~12%, pigment or colouring agent 0%~30%, base material soakAgent 0.1%~0.6%, adhesive agent 0.2%~1.5%, acid catalyst 0.2%~1%, coalescents 2%~12%,Defoamer 0.1%~0.5%, anti-zoned levelling agent 0.1%~0.5%, thickener 0.2%~1.0%, bactericide0.1%~0.3%, pH adjusting agent 0.5%~5%, cosolvent 2%~10%, deionized water 2%~25%;
Wherein, described nanometer water acrylic resin is self-cross linking type that vitrification point is lower, formaldehydelessCore-shell copolymerized nano-water soluble acrylate; Described low methyl-etherified amino resins is the high hydroxyl first of polymerizationThe low methyl-etherified melmac of base; Described Hardening resin is aqueous inorganic silicones; Described acid catalysisAgent is the one of p-methyl benzenesulfonic acid, DBSA, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid.
2. a kind of high rigidity water-based glass baking varnish as claimed in claim 1, is characterized in that: described faceMaterial or colouring agent are that compatibility is good, high temperature resistant, titanium dioxide, the carbon of resistance to ag(e)ing, environmental protection, fineness≤15 μ mBlack, organic pigment, dyestuff, transparent pigment, pearlescent pigment, polygonal effect pigment or metallic pigments water-based lookThe combination of one or more in slurry.
3. a kind of high rigidity water-based glass baking varnish as claimed in claim 1, is characterized in that: described is closeAgent and be the siloxanes coupling that contains amino, methacrylate based, epoxy radicals, vinyl, chlorination alkylThe one of agent.
4. a kind of high rigidity water-based glass baking varnish as claimed in claim 1, is characterized in that: described one-tenthFilm auxiliary agent is ethanol, isopropyl alcohol, propane diols, sec-butyl alcohol, n-butanol, carbitol, propylene glycol monomethyl ether, thirdThe combination of one or more of glycol butyl ether, alcohol ester-12, propane diols phenylate, diethylene glycol butyl ether.
5. a kind of high rigidity water-based glass baking varnish as claimed in claim 1, is characterized in that: described pHConditioning agent is ammoniacal liquor, triethylamine, triethanolamine, N, N-dimethylethanolamine, 2-amino-2-methyl-1-thirdThe one of alcohol.
6. a coating process for a kind of high rigidity water-based glass baking varnish as claimed in claim 1, its featureBe: described coating process, comprises the following steps: before application, must carry out cleaning to ground, usePutty is filled and led up gap and aperture, after being dried, polishes flat; By Water-based glass baking paint brushing, roller coating or spray toOn the ground of handling well, control build between 8~12 μ m; Place 5~15min or surface drying in room temperatureAfter; Brushing or spraying second water-based stoving paint, control build between 8~12 μ m; As required orWhether the surface appearance of coating film determines Pen tri-roads, to control build 10~50 μ m; After surface drying, be placed onIn the baking oven of 160~180 DEG C, toast 15~25min.
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