CN114773968B - Boiling-resistant water-based high-gloss white baking paint for stainless steel thermos cup and preparation method thereof - Google Patents
Boiling-resistant water-based high-gloss white baking paint for stainless steel thermos cup and preparation method thereof Download PDFInfo
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- CN114773968B CN114773968B CN202210535177.6A CN202210535177A CN114773968B CN 114773968 B CN114773968 B CN 114773968B CN 202210535177 A CN202210535177 A CN 202210535177A CN 114773968 B CN114773968 B CN 114773968B
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- 239000003973 paint Substances 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000009835 boiling Methods 0.000 title claims abstract description 52
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 38
- 239000010935 stainless steel Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000010227 cup method (microbiological evaluation) Methods 0.000 title description 2
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000000049 pigment Substances 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 15
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 15
- 229920001225 polyester resin Polymers 0.000 claims abstract description 15
- 239000004645 polyester resin Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 239000000080 wetting agent Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 8
- 239000006184 cosolvent Substances 0.000 claims abstract description 8
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 7
- 239000010452 phosphate Substances 0.000 claims abstract description 7
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 6
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 4
- 239000013530 defoamer Substances 0.000 claims description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000012141 concentrate Substances 0.000 claims description 8
- 239000002318 adhesion promoter Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910021485 fumed silica Inorganic materials 0.000 claims description 4
- 239000001038 titanium pigment Substances 0.000 claims description 4
- 235000011438 Albizia odoratissima Nutrition 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 240000000559 Albizia odoratissima Species 0.000 claims 1
- 239000002966 varnish Substances 0.000 abstract description 12
- 238000005507 spraying Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 38
- 239000011248 coating agent Substances 0.000 description 20
- 238000000576 coating method Methods 0.000 description 20
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 5
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 4
- 229960002887 deanol Drugs 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000012972 dimethylethanolamine Substances 0.000 description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 241000220433 Albizia Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- WNGBSVHRPZRMHI-UHFFFAOYSA-N diisocyanatolead Chemical compound [Pb++].[N-]=C=O.[N-]=C=O WNGBSVHRPZRMHI-UHFFFAOYSA-N 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 235000010215 titanium dioxide Nutrition 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- 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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of water-based paint, and particularly discloses boiling-resistant water-based high-gloss white baking paint for a stainless steel vacuum cup and a preparation method thereof. The baking varnish comprises the following components in parts by weight: 6-12% of modified water-soluble acrylic resin; 16-30% of high-solid low-viscosity water-soluble polyester resin; 0.2 to 0.8 percent of neutralizer; 3-6% of cosolvent; 40-60% of aqueous pigment concentrated slurry; 0.1 to 0.3 percent of rear-stage defoaming agent; 0.1 to 0.3 percent of high-efficiency oil-resistant wetting agent; 2.5 to 4.5 percent of partially methylated melamine formaldehyde resin; 2-4% of water-based blocked polyisocyanate; 1.5 to 2.5 percent of epoxy phosphate adhesive force promoter; 0.1 to 0.5 percent of leveling agent; 0.1 to 0.3 percent of water-based boiling-resistant auxiliary agent; 1.6 to 5.6 percent of water and other components. The product can meet various performance requirements of the paint for the stainless steel vacuum cup through one-time spraying, and the paint film has the advantages of high glossiness, strong covering power, good boiling resistance and the like, and can be widely applied to decoration beautification of the surface highlight white effect of the stainless steel vacuum cup and cup body protection.
Description
Technical Field
The invention belongs to the technical field of water-based paint, and particularly relates to boiling-resistant water-based high-gloss white baking paint for a stainless steel vacuum cup and a preparation method thereof.
Background
The stainless steel thermos cup is a middle-high grade drinking water tool with high popularity in daily life, and particularly in cold winter, the thermos cup is more widely used. Baking lacquers are often sprayed in factory production to decorate and beautify the surface thereof, and currently, the baking lacquer which is dominant in the market is still the traditional oily amino baking lacquer.
The water-based paint is a mainstream direction of the world paint development, and along with the continuous promotion of industrialization and urban development, people gradually recognize that the economic development cannot come at the expense of environment, and start to track the industrial development mode with low pollution and even no pollution. In order to meet the requirements of environmental protection and energy conservation, the development of low-VOC environmental protection water-based paint becomes the necessary trend of the development of the paint industry. The application of the water-based industrial baking varnish on the stainless steel vacuum cup has been exploratory accumulation for about 5 years, and precious trial experience is obtained. From the current stainless steel vacuum cup coating field, the primary application result is water-based industrial baking varnish. The coating of the water-based solid baking paint for the vacuum cup is basically a multi-coating construction process comprising primer, finish paint and even middle paint, and is constructed by a single coating product, so that the consumption and cost of the paint required by multi-coating construction can be saved, the construction cost can be reduced exponentially, the coating efficiency can be improved, and huge market value can be brought, but the water-based high-gloss solid baking paint product with the single coating has not seen a successful precedent of large-scale application in the vacuum cup market. Therefore, the project of replacing the multi-coating product and the construction process thereof with the single-coating product and the construction process thereof is always a hot spot for continuous exploration and research of coating manufacturers and coating end users. However, this item also has some technical difficulties that are difficult to overcome: namely, on the premise of ensuring that the weight ratio of film forming substances in the paint formula is unchanged, the covering power of a single coating product is improved; and ensuring that the weight percentage or the solid content of film forming substances (namely resin and amino curing agent) in the paint formula is at an ideal level under the precondition that the covering power of a single coating is comparable with the common covering power of a multi-coating product, thereby realizing the optimization of the comprehensive performance of the coating.
The high-gloss white baking varnish product is a main product in the high-gloss solid baking varnish for the stainless steel thermos cup, and accounts for about 35% of the market share of the high-gloss solid baking varnish. The boiling resistance of the water-based high-gloss white baking paint is an excessively hard index which is the most important and difficult to reach the performance requirement of the water-based industrial baking paint for the stainless steel thermos cup. The boiling resistance of the water-based baking varnish for the stainless steel thermos cup is mainly expressed in two aspects: firstly, boiling for 1h at constant temperature under the boiling water condition, wherein the surface of a paint film is not foamed, shed or lost; and secondly, the coating after being boiled for 1h is subjected to adhesion and scratch resistance test when the temperature is reduced to the hand-touchable temperature (40-60 ℃), the adhesion of a paint film is of level 1, and the scratch resistance meets the standard (namely, the scratch test is carried out according to the GB/T9729 standard, and the detection result is 'no scratch').
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cup, which can meet various performance requirements of the paint for the stainless steel thermos cup through one-time spraying, and has the characteristics of high glossiness, strong covering power, good boiling resistance, high hardness, strong scratch resistance, excellent impact resistance and strong adhesive force. The invention further aims to provide a preparation method of the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cup.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a boiling-resistant water-based high-gloss white baking paint for a stainless steel vacuum cup comprises the following components in percentage by weight:
wherein the sum of the weight percentages of the components is one hundred percent.
In the invention, the modified water-soluble acrylic resin is AC-170 modified water-soluble acrylic resin provided by Shanghai Albizia materials science and technology Co., ltd; the high-solid low-viscosity water-soluble polyester resin is WP-8086 water-based polyester resin provided by the curing engineering Co-Ltd, and the weight ratio of the modified water-soluble acrylic resin to the high-solid low-viscosity water-soluble polyester resin is 0.2-0.75.
The AC-170 modified water-soluble acrylic resin has the characteristics of moderate hardness, good flexibility, excellent adhesive force and the like, and has excellent boiling resistance, alcohol resistance and chemical resistance. The introduction and use of the resin lays a foundation for the boiling resistance of the product to a large extent.
The WP-8086 water-based polyester resin is a high-solid low-viscosity water-soluble polyester resin, the solid content of the resin is up to (80+/-2)%, the viscosity is only Z4-Z6 (s, 25 ℃ and the Grignard), and the coating has high gloss, good chemical resistance, strong adhesive force and good flexibility.
The synergistic use of the WP-8086 high-solid low-viscosity resin and the aqueous pigment concentrated slurry can realize that the dosage of the aqueous pigment concentrated slurry in a paint formula reaches an ideal weight percentage, thereby meeting the requirement of the outstanding paint film covering power required by single coating products and construction processes, and ensuring that the solid content of the film-forming resin in the paint formula is maintained at an appropriate weight percentage, thereby meeting the optimization of the comprehensive performance of the dry film of the paint.
The WP-8086 high-solid low-viscosity resin and the AC-170 modified water-soluble acrylic resin are mixed and spliced, so that the advantage performance supplement of the two resins is well realized, the excellent boiling resistance of the acrylic resin is realized, the high gloss, chemical resistance and flexibility of a water-soluble polyester resin coating are ensured, the film-forming resin effectively coats high-content titanium pigment, and the high covering power, high fullness, high gloss and excellent mechanical properties of a product paint film are met.
In the invention, the neutralizer is dimethylethanolamine.
In the invention, the cosolvent consists of ethylene glycol monobutyl ether and dodecyl ester alcohol according to the weight ratio of 1 (0.5-1).
The mixed cosolvent mixed and spliced according to a certain weight ratio in the formula of the invention not only reflects the high dissolving force of ethylene glycol monobutyl ether on water-soluble resin, enhances the atomization effect during the paint spraying construction of water-based baking paint, improves the easy construction property of the product, but also fully exerts the sagging resistance of the special-shaped part of the dodecanol in the baking paint of the stainless steel thermos cup, such as the cup bottle part and the cup bottom part, and avoids sagging and accumulation of paint liquid.
In the invention, the aqueous pigment concentrated slurry consists of the following components in percentage by weight:
the sum of the weight percentages of the components in the aqueous pigment concentrate slurry is one hundred percent.
In the invention, the front-stage defoamer is TEGO FOAMEX 810 defoamer.
In the invention, the dispersant is BYK-190 dispersant.
The rear-stage defoamer is BYK-024 defoamer.
In the invention, the high-efficiency oil-resistant wetting agent is SN-1070 oil-resistant wetting agent provided by Guangzhou Saenou environmental protection materials Co.
SN-1070 is a non-silicon polymer type oil-resistant agent, has special effect on shrinkage cavity of oil pit caused by foaming agent, release agent, oil stain on the surface of substrate, etc., can strongly reduce the surface tension of the system, thereby providing strong substrate wetting and anti-pollution capability, providing reliable wetting and leveling effect in most polluted environments, and not affecting recoating property.
In the invention, the partially methylated melamine formaldehyde resin is partially methylated melamine formaldehyde resin produced by the American cyante company; the neutralizer is dimethylethanolamine.
In the invention, the aqueous blocked polyisocyanate is WH8875 aqueous blocked isocyanate provided by Guangdong Shundeyi curing industry and technology Co. The introduction and the use of the water-based blocked isocyanate lead the cross-linking reaction of the water-based baking varnish product in the drying and film-forming stage to not only comprise the original cross-linking and film-forming reaction of the hydroxyl resin and the amino resin, but also increase the cross-linking and film-forming reaction of the hydroxyl resin and the blocked isocyanate after high-temperature ring opening, enhance the compactness of a paint film and further improve the comprehensive properties of the paint film such as boiling resistance, hardness, scratch resistance and the like.
The epoxy phosphate adhesion promoter is EP 805 adhesion promoter provided by Guangdong Shundeyi curing engineering Co., ltd.
The leveling agent is BYK-333 leveling agent.
In the invention, the water-based boiling-resistant auxiliary agent is an A-831 water-based boiling-resistant auxiliary agent provided by New materials limited company in the Buddha city.
The A-831 boiling-resistant auxiliary agent is a catalytic acid modified primary hydroxyl polymer solution, is suitable for industrial paint of most metal base materials, can improve the boiling-resistant performance of the water-based amino baking paint, and can also obviously improve the salt spray resistance and the adhesive force to the base materials of a paint film.
The invention also provides a preparation method of the boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup, which comprises the following specific steps:
a. preparation of aqueous pigment concentrate slurries
According to the raw material composition of the aqueous pigment concentrated slurry, sequentially adding water, a dispersing agent, a front-stage defoaming agent, a wetting agent, titanium pigment, fumed silica, ethylene glycol and other components into a dispersing cylinder, and dispersing at a high speed until the fineness of the slurry is less than or equal to 20 mu m;
b. preparation of boiling-resistant water-based high-gloss white baking paint
And (c) sequentially adding the modified water-soluble acrylic resin, the high-solid low-viscosity water-soluble polyester resin, the neutralizer, the cosolvent, the aqueous pigment concentrated slurry prepared in the step (a), the rear-stage defoamer, the high-efficiency oil-resistant wetting agent, the partially methylated melamine formaldehyde resin, the aqueous closed polyisocyanate, the epoxy phosphate adhesive force promoter, the flatting agent, the aqueous boiling-resistant auxiliary agent, water and other components into a dispersing cylinder, and dispersing at a high speed until the fineness of a finished product is less than or equal to 20 mu m and the viscosity is 100-150 s.
The high-speed dispersion speed is 1200-1500 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1) The content of Volatile Organic Compounds (VOC) in the product is effectively controlled within 60g/L, so that the product is a real healthy environment-friendly water-based paint product;
2) The product has strong adhesive force, good impact resistance and higher hardness up to 3H;
3) The product has excellent boiling resistance, and can be boiled for 1h at constant temperature in a boiling water state, and a paint film is free from bubbling, falling and light loss; after the paint film of the product is boiled for 1 hour, the adhesive force and scratch resistance test is carried out when the temperature is reduced to the hand-touchable temperature (40-60 ℃), the adhesive force of the paint film is still 1 grade, and the scratch resistance still meets the standard requirement of 'no scratch' (namely, the scratch test is carried out according to the GB/T9729 standard, and the detection result is 'no scratch');
4) The water-based white baking varnish product has extremely high varnish film gloss and excellent covering power;
5) The glossiness of a paint film of a product obtained by one-time spraying is above 92 degrees (measured according to GB/T9754 rule, 60 degrees), and the paint film can realize perfect covering of a stainless steel base material without penetrating the base;
6) The product has excellent sagging resistance and good storage stability, and can be widely applied to decoration beautification and cup body protection of the surface of the stainless steel thermos cup with a highlight white effect.
Detailed Description
The boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup comprises the following components in percentage by weight:
wherein the sum of the weight percentages of the components is one hundred percent.
Wherein the aqueous pigment concentrate slurry consists of the following components in percentage by weight:
the sum of the weight percentages of the components in the aqueous pigment concentrate slurry is one hundred percent.
The front-end defoamer is a TEGO FOAMEX 810 defoamer.
Wherein the modified water-soluble acrylic resin is AC-170 modified water-soluble acrylic resin provided by Shanghai albizia Material science and technology Co., ltd; the high-solid low-viscosity water-soluble polyester resin is WP-8086 water-based polyester resin provided by Guangdong Shundeyi curing engineering Co., ltd.
The neutralizer is dimethylethanolamine; the rear-stage defoamer is BYK-024 defoamer.
The cosolvent consists of ethylene glycol monobutyl ether and dodecyl alcohol according to the weight ratio of 1 (0.5-1).
The efficient oil-resistant wetting agent is SN-1070 oil-resistant wetting agent provided by Guangzhou Sauno environmental protection materials Co.
The partially methylated melamine formaldehyde resin is partially methylated melamine formaldehyde resin produced by Cyaniter company.
The neutralizer is dimethylethanolamine; the aqueous blocked polyisocyanate is WH8875 aqueous blocked isocyanate provided by Guangdong Shundeyi curing engineering Co., ltd.
The epoxy phosphate adhesion promoter is EP 805 adhesion promoter provided by Guangdong Shundeyi curing engineering Co., ltd.
The leveling agent is BYK-333 leveling agent.
The water-based boiling-resistant auxiliary agent is an A-831 water-based boiling-resistant auxiliary agent provided by the New materials limited company in the Buddha market.
The preparation method of the boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup comprises the following steps of:
a. preparation of aqueous pigment concentrate slurries
According to the raw material composition of the aqueous pigment concentrated slurry, sequentially adding water, a dispersing agent, a front-stage defoaming agent, a wetting agent, titanium pigment, fumed silica, ethylene glycol and other components into a dispersing cylinder, dispersing at a high speed for 30-50 min, wherein the high-speed dispersing speed is 1200-1500 r/min, and if the fineness of the slurry is less than or equal to 20 mu m;
b. preparation of boiling-resistant water-based high-gloss white baking paint
And (c) sequentially adding the modified water-soluble acrylic resin, the high-solid low-viscosity water-soluble polyester resin, the neutralizer, the cosolvent, the aqueous pigment concentrated slurry prepared in the step (a), the rear-stage defoamer, the high-efficiency oil-resistant wetting agent, the partially methylated melamine formaldehyde resin, the aqueous closed polyisocyanate, the epoxy phosphate adhesive force promoter, the flatting agent, the aqueous boiling-resistant auxiliary agent, water and other components into a dispersing cylinder, and dispersing at high speed for 30-50 min, wherein the fineness of a finished product is less than or equal to 20 mu m, and the viscosity is 100-150 s.
The invention is further illustrated, but not limited, by the following examples.
In the specific embodiment, the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cup is prepared by setting the following examples 1-5, wherein the formula of the water-based pigment concentrated slurry is shown in table 1, the formula of the main paint is shown in table 2, and the formula compositions of the table 1 and the table 2 are calculated according to the mass percent (%):
table 1 formulation of aqueous pigment concentrate (unit:%)
| Raw material name | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Water and its preparation method | 14.0 | 12.0 | 13.6 | 13.0 | 12.5 |
| Dispersing agent | 5.0 | 3.8 | 4.8 | 5.6 | 6.0 |
| Front-stage defoamer | 0.6 | 0.7 | 0.8 | 0.5 | 0.4 |
| Wetting agent | 1.2 | 1.1 | 1.0 | 1.3 | 1.5 |
| Titanium white powder | 75.0 | 78.0 | 74.0 | 76.0 | 77.0 |
| Fumed silica | 0.8 | 0.7 | 1.0 | 0.7 | 0.6 |
| Ethylene glycol | 1.0 | 1.1 | 1.4 | 0.8 | 0.6 |
| Other components | 2.4 | 2.6 | 3.4 | 2.1 | 1.4 |
| Sum up | 100 | 100 | 100 | 100 | 100 |
Table 2 Main paint formulation (unit:%)
According to the raw material formulas in the examples 1-5 in the table, the products of the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cups in the examples 1-5 are prepared according to the preparation method of the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cups, and performance tests are carried out.
Performance testing
The products of the boiling-resistant water-based high-gloss white baking paint for the stainless steel thermos cups prepared in the embodiments 1 to 5 of the invention and the like products sold in the market are subjected to spraying construction and performance detection. The coating substrate is a stainless steel vacuum cup, oil and rust removal and polishing are needed before spraying, and dust free cleaning and drying are ensured. Before spraying, the water-based baking varnish is uniformly stirred, and the baking varnish is diluted to have the viscosity of 45-50 s (salt pan No. 2 cup) by deionized water. The baking temperature is 150 ℃, the baking time is 25min, and the dry film thickness of the paint film is controlled to be 18-25 mu m.
The results of testing the main performance indexes of the products prepared in examples 1 to 5 and the commercial similar products are shown in Table 3.
TABLE 3 test results
As can be seen from the test results in Table 3, the boiling-resistant water-based high-gloss white baking paint for stainless steel thermos cups prepared in examples 1 to 5 has strong adhesive force, good impact resistance and higher hardness than the products of the same kind on the market; the content of Volatile Organic Compounds (VOC) in the product is effectively controlled within 60g/l, and the product is a truly healthy and environment-friendly water-based paint product.
The products prepared in the examples 1-5 have excellent boiling resistance, and can be boiled for 1h at constant temperature in a boiling water state, and paint films are free from bubbling, falling and light loss; after the paint film of the product is boiled for 1 hour, the adhesive force and scratch resistance test is carried out when the temperature is reduced to the hand-touchable temperature (40-60 ℃), the adhesive force of the paint film is still 1 grade, and the scratch resistance still meets the standard requirement of 'unbreakable' (namely, the scratch test is carried out according to the GB/T9729 standard, and the detection result is 'unbreakable').
The product of the embodiment has extremely high paint film gloss and excellent covering power, the paint film of the product obtained by one-time spraying has the glossiness of more than 92 degrees (measured according to the GB/T9754 rule, 60 degrees), and can realize perfect covering to the stainless steel bottom material without penetrating the bottom; the product has excellent sagging resistance and good storage stability, and can be widely applied to decoration beautification and cup body protection of the surface highlight white effect of the stainless steel thermos cup.
The above-mentioned preferred embodiments should be regarded as illustrative examples of embodiments of the present application, and all such technical deductions, substitutions, improvements and the like which are made on the basis of the same, similar or similar embodiments of the present application should be regarded as the protection scope of the present invention.
Claims (8)
1. The boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup is characterized by comprising the following components in percentage by weight:
wherein the sum of the weight percentages of the components is hundred percent;
the modified water-soluble acrylic resin is AC-170 modified water-soluble acrylic resin provided by Shanghai albizia materials science and technology Co., ltd; the high-solid low-viscosity water-soluble polyester resin is WP-8086 water-based polyester resin provided by the curing engineering Co-Ltd, and the weight ratio of the modified water-soluble acrylic resin to the high-solid low-viscosity water-soluble polyester resin is 0.2-0.75;
the aqueous pigment concentrated slurry consists of the following components in percentage by weight:
the sum of the weight percentages of the components in the aqueous pigment concentrate slurry is one hundred percent.
2. The boiling-resistant aqueous highlight white baking paint for stainless steel vacuum cups as set forth in claim 1, wherein: the cosolvent consists of ethylene glycol monobutyl ether and dodecyl ester alcohol according to the weight ratio of 1:0.5-1.
3. The boiling-resistant aqueous highlight white baking paint for stainless steel vacuum cups as set forth in claim 1, wherein: the front-end defoamer is a TEGO FOAMEX 810 defoamer.
4. The boiling-resistant aqueous highlight white baking paint for stainless steel vacuum cups as set forth in claim 1, wherein: the rear-stage defoamer is BYK-024 defoamer.
5. The boiling-resistant aqueous highlight white baking paint for stainless steel vacuum cups as set forth in claim 1, wherein: the epoxy phosphate adhesion promoter is EP 805 adhesion promoter provided by Guangdong Shundeyi curing engineering Co., ltd.
6. The boiling-resistant aqueous highlight white baking paint for stainless steel vacuum cups as set forth in claim 1, wherein: the water-based boiling-resistant auxiliary agent is an A-831 water-based boiling-resistant auxiliary agent provided by the New materials limited company in the Buddha market.
7. A method for preparing the boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup, which is characterized by comprising the following steps of:
a. preparation of aqueous pigment concentrate slurries
According to the raw material composition of the aqueous pigment concentrated slurry, sequentially adding water, a dispersing agent, a front-stage defoaming agent, a wetting agent, titanium pigment, fumed silica, ethylene glycol and other components into a dispersing cylinder, and dispersing at a high speed until the fineness of the slurry is less than or equal to 20 mu m;
b. preparation of boiling-resistant water-based high-gloss white baking paint
And (c) sequentially adding the modified water-soluble acrylic resin, the high-solid low-viscosity water-soluble polyester resin, the neutralizer, the cosolvent, the aqueous pigment concentrated slurry prepared in the step (a), the rear-stage defoamer, the high-efficiency oil-resistant wetting agent, the partially methylated melamine formaldehyde resin, the aqueous closed polyisocyanate, the epoxy phosphate adhesive force promoter, the flatting agent, the aqueous boiling-resistant auxiliary agent, water and other components into a dispersing cylinder, and dispersing at a high speed until the fineness of a finished product is less than or equal to 20 mu m and the viscosity is 100-150 s.
8. The method for preparing the boiling-resistant water-based high-gloss white baking paint for the stainless steel vacuum cup, which is characterized in that: the high-speed dispersion speed is 1200-1500 r/min.
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