CN109082187A - A kind of acrylic lacquer and preparation method - Google Patents
A kind of acrylic lacquer and preparation method Download PDFInfo
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- CN109082187A CN109082187A CN201810858672.4A CN201810858672A CN109082187A CN 109082187 A CN109082187 A CN 109082187A CN 201810858672 A CN201810858672 A CN 201810858672A CN 109082187 A CN109082187 A CN 109082187A
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- 239000004923 Acrylic lacquer Substances 0.000 title claims description 28
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 32
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004132 cross linking Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000006260 foam Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 11
- 239000000080 wetting agent Substances 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 38
- -1 (methyl) Methyl Chemical group 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 11
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 10
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000012948 isocyanate Substances 0.000 claims description 10
- WHIVNJATOVLWBW-UHFFFAOYSA-N n-butan-2-ylidenehydroxylamine Chemical compound CCC(C)=NO WHIVNJATOVLWBW-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 claims description 5
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 5
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- 239000012874 anionic emulsifier Substances 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000006210 lotion Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 3
- 239000012875 nonionic emulsifier Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002966 varnish Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of acrylic lacqueres, by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin 40 ~ 80%, aqueous epoxy resins 1 ~ 10%, levelling agent 0.1 ~ 0.5%, defoaming agent 0.1 ~ 0.5%, foam inhibitor 0.1 ~ 0.5%, wetting agent 0.1 ~ 1%, pure water 20 ~ 50%；The present invention uses microemulsified synthesis technology, and polyurethane cross-linking agent and acrylic resin are grafted, a kind of cured water soluble acrylic acid baking varnish of self-crosslinkable is prepared；Content of volatile organic compound is extremely low in the varnish, low toxicity and environmental protection.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of acrylic lacquer and preparation method.
Background technique
Varnish is commonly called as varnish, a kind of coating without coloring material, and main component is the mixture of resin and solvent,
Or resin, oil-solvent blend, after being applied to body surface, the film with protection, decoration and property is formed, clearly
The film of paint be it is transparent, be chiefly used in the coating of furniture, floor, door and window and automobile etc..
The type of common varnish has ester gum varniss, french polish, novolaks, acrylic lacquer etc., wherein existing market
On water soluble acrylic acid baking varnish be mostly water soluble hydroxy acrylic resin or aqueous dispersion resin with it is amino resin crosslinked
The system formed after solidification.As patent 106916503A discloses a kind of single component varnish composition, including at least one has
Hyperbranched or tree polymer；At least one Hydroxylated acrylic resin or hydroxy resin；It is at least one
Organosilicon modified crylic acid resin；At least one crosslinking and curing agent；At least one acid catalyst；At least one rheology control agent；
At least one auxiliary agent, and at least one solvent；The single component varnish composition is the one pack system of high scratch-resistant and high durable
Clear coat composition, this technology can effectively improve the slipping of clear coat composition film coated surface, increase the rub resistance of film
Property due to water solubility, but in acrylic resin contain a certain amount of cosolvent and neutralizer, it is molten that amino resins is also required to alcohol ethers
Agent can be just dispersed stably in system, and therefore, varnish obtained contains a large amount of alcohol ethers solvent and amine neutralizer, in turn
It evaporates into air, seriously pollutes air, and can all damage to the health of the mankind, plant growth etc., it is difficult to meet
The requirement of environmental protection, and working viscosity is high, water-thinned is poor, smell is big.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of acrylic lacquer, using microemulsified synthesis technology, by poly- ammonia
Ester crosslinking agent and acrylic resin are grafted, and prepare a kind of cured acrylic lacquer of self-crosslinkable；Volatility is organic in the varnish
Compounds content is extremely low, low toxicity and environmental protection.
Technical solution provided by the invention is as follows:
A kind of acrylic lacquer, by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin 40 ~ 80%, aqueous ring
Oxygen resin 1 ~ 10%, levelling agent 0.1 ~ 0.5%, defoaming agent 0.1 ~ 0.5%, foam inhibitor 0.1 ~ 0.5%, wetting agent 0.1 ~ 1%, pure water 20 ~
50%。
Preferably, self-crosslinking aqueous acrylic resin is by A substance, B substance and C material composition, and A substance is by following quality point
Several material composition: (methyl) isobornyl acrylate 3 ~ 5%, (methyl) methyl acrylate 10 ~ 15%, (methyl) butyl acrylate
10 ~ 15%, (methyl) hydroxy-ethyl acrylate 5 ~ 10%, (methyl) acrylic acid 1 ~ 5%, crosslinking agent 10 ~ 20%；B substance is by following quality
The material composition of score: nonionic emulsifier 0.5 ~ 1%, anionic emulsifier 0.5 ~ 1%, n-amyl alcohol 0.1 ~ 1%, pure water 20 ~
30%；C substance by following mass fraction material composition: ammonium persulfate 0.5 ~ 2%, tetramethylethylenediamine 0.5 ~ 2%, pure water 20 ~
30%。
It is highly preferred that the self-crosslinking aqueous acrylic resin preparation method the following steps are included:
(1) each substance in B component is weighed in proportion, and reaction pot is added, stirring to whole dissolutions；
(2) each substance in component A is weighed in proportion and is stirred evenly, and the 5 ~ 10% of A substance total amount are added in reaction pot,
Emulsion is made in high-speed stirred；
(3) 40 ~ 45 DEG C are warming up to, weighs each substance in component C in proportion, after stirring and dissolving, is added in reaction pot and reacts,
Obtain semi-transparent zone blue light lotion；
(4) remaining component A is added dropwise into reaction pot, is stirred when being added dropwise, 3 ~ 4h is kept the temperature after being added dropwise to get self-crosslinking water
Property acrylic resin.
Preferably, step (2) high speed mixing time is 10 ~ 15min；Logical nitrogen is needed in step (3) in component C course of dissolution
Gas.
Preferably, the reaction time is 10 ~ 20min in step (3)；Mixing speed is in 500 ~ 700r/min in step (4).
Preferably, above-mentioned crosslinking agent by following mass fraction material composition: aliphatic isocyanates tripolymer 60 ~
70%, (methyl) hydroxy-ethyl acrylate 10 ~ 20%, methyl ethyl ketoxime 10 ~ 20%.
It is highly preferred that the crosslinking agent preparation method the following steps are included:
(1) aliphatic isocyanates tripolymer is added in reaction pot, leads to nitrogen, is warming up to 60 ~ 70 DEG C；
(2) (methyl) hydroxy-ethyl acrylate is added dropwise, is kept the temperature after being added dropwise；
(3) 70 ~ 80 DEG C are continuously heating to, methyl ethyl ketoxime is added dropwise, heat preservation is after being added dropwise to get crosslinking agent.
Preferably, time for adding is 1 ~ 2h in step (2), and soaking time is 4 ~ 5h；In step (3) time for adding be 0.5 ~
1h, soaking time are 2 ~ 2.5h.
The invention also discloses a kind of methods for preparing above-mentioned acrylic lacquer, comprising the following steps:
(1) self-crosslinking aqueous acrylic resin, aqueous epoxy resins and pure water are added in a mixing bowl, stir 5 ~ 10min, stirs
Mixing speed is 500 ~ 800r/min；
(2) wetting agent, levelling agent, defoaming agent and foam inhibitor are added while stirring, continues 10 ~ 20min of stirring；
(3) pure water is added, continues 10 ~ 20min of stirring to get acrylic lacquer.
Compared with prior art, the present invention has following technical advantage:
(1) present invention uses microemulsified synthesis technology, polyurethane cross-linking agent and acrylic resin is grafted, preparing one kind can be selfed
Joining cured acrylic lacquer, the VOC content in the varnish is nontoxic less than 5% after measured, it has no irritating odor, healthy ring
It protects；
(2) construction is simple of the present invention, use is wide, can brush on the objects such as steel, non-ferrous metal, glass, ceramics, forms one
Layer high rigidity, high glaze, high richness, high-wearing feature coating, wearability is good, water-fast, acid and alkali-resistance, salt spray resistance, flexibility are good,
Thorough protection and good decorative effect can be provided for product.
Specific embodiment
Embodiment 1
A kind of acrylic lacquer, by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin 48%, water-base epoxy
Resin 1%, levelling agent 0.1%, defoaming agent 0.1%, foam inhibitor 0.1%, wetting agent 0.7%, pure water 50%.
Wherein, self-crosslinking aqueous acrylic resin is by A substance, B substance and C material composition, and A substance is by following mass fraction
Material composition: (methyl) isobornyl acrylate 3%, (methyl) methyl acrylate 10%, (methyl) butyl acrylate 15%, (first
Base) hydroxy-ethyl acrylate 10%, (methyl) acrylic acid 3%, crosslinking agent 15%；B substance by following mass fraction material composition: it is non-
Ionic emulsifying agent 0.5%, anionic emulsifier 0.5%, n-amyl alcohol 1%, pure water 20%；C substance by following mass fraction object
Matter composition: ammonium persulfate 0.5%, tetramethylethylenediamine 0.5%, pure water 21%.
Self-crosslinking aqueous acrylic resin preparation method the following steps are included:
(1) each substance in B component is weighed in proportion, and reaction pot is added, stirring to whole dissolutions；
(2) each substance in component A is weighed in proportion and is stirred evenly, and the 5% of A substance total amount is added in reaction pot, high speed
It stirs 10min and emulsion is made；
(3) it weighs each substance in component C in proportion in the atmosphere of nitrogen, at 40 DEG C, after stirring and dissolving, is added to reaction pot
Middle reaction 10min obtains semi-transparent zone blue light lotion；
(4) remaining component A is added dropwise into reaction pot, is stirred when being added dropwise, mixing speed 500r/min is protected after being added dropwise
Warm 3h is to get self-crosslinking aqueous acrylic resin.
Wherein, crosslinking agent by following mass fraction material composition: aliphatic isocyanates tripolymer 60%, (methyl) third
Olefin(e) acid hydroxyl ethyl ester 20%, methyl ethyl ketoxime 20%.
Crosslinking agent preparation method the following steps are included:
(1) aliphatic isocyanates tripolymer is added in reaction pot, leads to nitrogen, is warming up to 60 DEG C；
(2) (methyl) hydroxy-ethyl acrylate is added dropwise, time for adding 1h keeps the temperature 4h after being added dropwise；
(3) 70 DEG C are continuously heating to, methyl ethyl ketoxime is added dropwise, time for adding 0.5h keeps the temperature 2h to get crosslinking after being added dropwise
Agent.
The invention also discloses a kind of methods for preparing above-mentioned acrylic lacquer, comprising the following steps:
(1) self-crosslinking aqueous acrylic resin, aqueous epoxy resins and pure water are added in a mixing bowl, stir 5min, stirring
Speed is 500r/min；
(2) wetting agent, levelling agent, defoaming agent and foam inhibitor are added while stirring, continues to stir 10min；
(3) pure water is added, continues to stir 10min to get acrylic lacquer.
Embodiment 2
A kind of acrylic lacquer, by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin 50%, water-base epoxy
Resin 5%, levelling agent 0.2%, defoaming agent 0.2%, foam inhibitor 0.3%, wetting agent 0.3%, pure water 44%.
Wherein, self-crosslinking aqueous acrylic resin is by A substance, B substance and C material composition, and A substance is by following mass fraction
Material composition: (methyl) isobornyl acrylate 4%, (methyl) methyl acrylate 12%, (methyl) butyl acrylate 10%, (first
Base) hydroxy-ethyl acrylate 5%, (methyl) acrylic acid 2%, crosslinking agent 10%；B substance by following mass fraction material composition: it is non-from
Subtype emulsifier 0.6%, anionic emulsifier 0.6%, n-amyl alcohol 0.8%, pure water 28%；C substance by following mass fraction object
Matter composition: ammonium persulfate 1%, tetramethylethylenediamine 1%, pure water 25%.
Self-crosslinking aqueous acrylic resin preparation method the following steps are included:
(1) each substance in B component is weighed in proportion, and reaction pot is added, stirring to whole dissolutions；
(2) each substance in component A is weighed in proportion and is stirred evenly, and the 8% of A substance total amount is added in reaction pot, high speed
It stirs 15min and emulsion is made；
(3) it weighs each substance in component C in proportion in the atmosphere of nitrogen, at 42 DEG C, after stirring and dissolving, is added to reaction pot
15 min of middle reaction, obtain semi-transparent zone blue light lotion；
(4) remaining component A is added dropwise into reaction pot, is stirred when being added dropwise, mixing speed 600r/min is protected after being added dropwise
Warm 3.5h is to get self-crosslinking aqueous acrylic resin.
Wherein, crosslinking agent by following mass fraction material composition: aliphatic isocyanates tripolymer 65%, (methyl) third
Olefin(e) acid hydroxyl ethyl ester 15%, methyl ethyl ketoxime 20%.
Crosslinking agent preparation method the following steps are included:
(1) aliphatic isocyanates tripolymer is added in reaction pot, leads to nitrogen, is warming up to 65 DEG C；
(2) (methyl) hydroxy-ethyl acrylate is added dropwise, time for adding 1.5h keeps the temperature 4.5h after being added dropwise；
(3) 75 DEG C are continuously heating to, methyl ethyl ketoxime is added dropwise, time for adding 0.6h keeps the temperature 2.2h to get crosslinking after being added dropwise
Agent.
The invention also discloses a kind of methods for preparing above-mentioned acrylic lacquer, comprising the following steps:
(1) self-crosslinking aqueous acrylic resin, aqueous epoxy resins and pure water are added in a mixing bowl, stir 6min, stirring
Speed is 600r/min；
(2) wetting agent, levelling agent, defoaming agent and foam inhibitor are added while stirring, continues to stir 15min；
(3) pure water is added, continues to stir 15min to get acrylic lacquer.
Embodiment 3
A kind of acrylic lacquer, by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin 76%, water-base epoxy
Resin 2%, levelling agent 0.3%, defoaming agent 0.4%, foam inhibitor 0.3%, wetting agent 1%, pure water 20%.
Wherein, self-crosslinking aqueous acrylic resin is by A substance, B substance and C material composition, and A substance is by following mass fraction
Material composition: (methyl) isobornyl acrylate 5%, (methyl) methyl acrylate 15%, (methyl) butyl acrylate 10%, (first
Base) hydroxy-ethyl acrylate 6%, (methyl) acrylic acid 1%, crosslinking agent 15%；B substance by following mass fraction material composition: it is non-from
Subtype emulsifier 0.4%, anionic emulsifier 0.7%, n-amyl alcohol 0.3%, pure water 23%；C substance by following mass fraction object
Matter composition: ammonium persulfate 0.6%, tetramethylethylenediamine 2%, pure water 21%.
It is highly preferred that the self-crosslinking aqueous acrylic resin preparation method the following steps are included:
(1) each substance in B component is weighed in proportion, and reaction pot is added, stirring to whole dissolutions；
(2) each substance in component A is weighed in proportion and is stirred evenly, and the 10% of A substance total amount is added in reaction pot, it is high
Emulsion is made in speed stirring 15min；
(3) it weighs each substance in component C in proportion in the atmosphere of nitrogen, at 45 DEG C, after stirring and dissolving, is added to reaction pot
Middle reaction 20min obtains semi-transparent zone blue light lotion；
(4) remaining component A is added dropwise into reaction pot, is stirred when being added dropwise, mixing speed 700r/min is protected after being added dropwise
Warm 4h is to get self-crosslinking aqueous acrylic resin.
Crosslinking agent by following mass fraction material composition: aliphatic isocyanates tripolymer 70%, (methyl) acrylic acid hydroxyl
Ethyl ester 15%, methyl ethyl ketoxime 15%.
Crosslinking agent preparation method the following steps are included:
(1) aliphatic isocyanates tripolymer is added in reaction pot, leads to nitrogen, is warming up to 70 DEG C；
(2) (methyl) hydroxy-ethyl acrylate is added dropwise, time for adding 2h keeps the temperature 5h after being added dropwise；
(3) 80 DEG C are continuously heating to, methyl ethyl ketoxime is added dropwise, time for adding 1h keeps the temperature 2.5h to get crosslinking after being added dropwise
Agent.
The invention also discloses a kind of methods for preparing above-mentioned acrylic lacquer, comprising the following steps:
(1) self-crosslinking aqueous acrylic resin, aqueous epoxy resins and pure water are added in a mixing bowl, stir 10min, stirring
Speed is 800r/min；
(2) wetting agent, levelling agent, defoaming agent and foam inhibitor are added while stirring, continues to stir 20min；
(3) pure water is added, continues to stir 20min to get acrylic lacquer.
Claims (9)
1. a kind of acrylic lacquer, it is characterised in that by the material composition of following mass fraction: self-crosslinking aqueous acrylic resin
40 ~ 80%, aqueous epoxy resins 1 ~ 10%, levelling agent 0.1 ~ 0.5%, defoaming agent 0.1 ~ 0.5%, foam inhibitor 0.1 ~ 0.5%, wetting agent
0.1 ~ 1%, pure water 20 ~ 50%.
2. a kind of acrylic lacquer according to claim 1, it is characterised in that: self-crosslinking aqueous acrylic resin is by A substance, B
Substance and C material composition, A substance by following mass fraction material composition: (methyl) isobornyl acrylate 3 ~ 5%, (methyl)
Methyl acrylate 10 ~ 15%, (methyl) butyl acrylate 10 ~ 15%, (methyl) hydroxy-ethyl acrylate 5 ~ 10%, (methyl) acrylic acid 1
~ 5%, crosslinking agent 10 ~ 20%；B substance by following mass fraction material composition: nonionic emulsifier 0.5 ~ 1%, anionic
Emulsifier 0.5 ~ 1%, n-amyl alcohol 0.1 ~ 1%, pure water 20 ~ 30%；C substance by following mass fraction material composition: ammonium persulfate
0.5 ~ 2%, tetramethylethylenediamine 0.5 ~ 2%, pure water 20 ~ 30%.
3. a kind of acrylic lacquer according to claim 2, it is characterised in that: the self-crosslinking aqueous acrylic resin system
Preparation Method the following steps are included:
(1) each substance in B component is weighed in proportion, and reaction pot is added, stirring to whole dissolutions；
(2) each substance in component A is weighed in proportion and is stirred evenly, and the 5 ~ 10% of A substance total amount are added in reaction pot,
Emulsion is made in high-speed stirred；
(3) 40 ~ 45 DEG C are warming up to, weighs each substance in component C in proportion, after stirring and dissolving, is added in reaction pot and reacts,
Obtain semi-transparent zone blue light lotion；
(4) remaining component A is added dropwise into reaction pot, is stirred when being added dropwise, 3 ~ 4h is kept the temperature after being added dropwise to get self-crosslinking water
Property acrylic resin.
4. a kind of acrylic lacquer according to claim 3, it is characterised in that: step (2) high speed mixing time be 10 ~
15min；Logical nitrogen is needed in step (3) in component C course of dissolution.
5. a kind of clear 1 paint of acrylic acid according to claim 3, it is characterised in that: in step (3) reaction time be 10 ~
20min；Mixing speed is in 500 ~ 700r/min in step (4).
6. a kind of acrylic lacquer according to claim 2 or 3, it is characterised in that: the crosslinking agent is by following quality point
Several material compositions: aliphatic isocyanates tripolymer 60 ~ 70%, (methyl) hydroxy-ethyl acrylate 10 ~ 20%, methyl ethyl ketoxime 10 ~
20%。
7. a kind of acrylic lacquer according to claim 6, it is characterised in that: the crosslinking agent preparation method includes following
Step:
(1) aliphatic isocyanates tripolymer is added in reaction pot, leads to nitrogen, is warming up to 60 ~ 70 DEG C；
(2) (methyl) hydroxy-ethyl acrylate is added dropwise, is kept the temperature after being added dropwise；
(3) 70 ~ 80 DEG C are continuously heating to, methyl ethyl ketoxime is added dropwise, heat preservation is after being added dropwise to get crosslinking agent.
8. a kind of acrylic lacquer according to claim 7, it is characterised in that: time for adding is 1 ~ 2h in step (2), is protected
The warm time is 4 ~ 5h；Time for adding is 0.5 ~ 1h in step (3), and soaking time is 2 ~ 2.5h.
9. a kind of method for preparing acrylic lacquer described in claim 1, it is characterised in that the following steps are included:
(1) self-crosslinking aqueous acrylic resin, aqueous epoxy resins and pure water are added in a mixing bowl, stir 5 ~ 10min, stirs
Mixing speed is 500 ~ 800r/min；
(2) wetting agent, levelling agent, defoaming agent and foam inhibitor are added while stirring, continues 10 ~ 20min of stirring；
(3) pure water is added, continues 10 ~ 20min of stirring to get acrylic lacquer.
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