CN102504694A - Water-based naon-sized pre-coated coil top coating and preparation method thereof - Google Patents
Water-based naon-sized pre-coated coil top coating and preparation method thereof Download PDFInfo
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- CN102504694A CN102504694A CN2011104276178A CN201110427617A CN102504694A CN 102504694 A CN102504694 A CN 102504694A CN 2011104276178 A CN2011104276178 A CN 2011104276178A CN 201110427617 A CN201110427617 A CN 201110427617A CN 102504694 A CN102504694 A CN 102504694A
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Abstract
The invention discloses a water-based naon-sized pre-coated coil top coating and a preparation method of the water-based naon-sized pre-coated coil top coating, and belongs to the technical field of coating production. The coating contains the following ingredients in percentage by weight: 40 to 70% of a nano-polymer emulsion, 1 to 30% of pigments, 5 to 20% of inert anti-rust pigments, 0.1 to 2% of active anti-rust pigments, 5 to 20% of fillers, 0.2 to 8% of adjuvants, 0.1 to 0.5% of pH regulators and the balance of deionized water. The coating system is composed of water-dispersible nano-polymer emulsion having a particle size of less than 100 nm, deionized water, pigments, inert anti-rust pigments, active anti-rust pigments, fillers and adjuvants. The water-based nano-polymer emulsion is composed of a hydrophilic acrylate copolymer, hydrophobic polyurethane and deionized water. The novel water-based naon-sized pre-coated coil top coating has the advantages that the film coatings are dense, have high thermodynamic property and mechanical stability and is good in corrosion resistance and weather resistance, and can meet the performance requirements of coating and coating process for pre-coated coils.
Description
Technical field
The invention belongs to the coating material production technical field, be specifically related to a kind of water nano precoated coil coating finish paint and preparation method thereof.
Background technology
Precoated coil coating is the one type of coating that develops rapidly in recent years, it can precoating on surfaces such as various coiled materials such as cold-rolled steel sheet, steel plate galvanized, aluminium section bars.Coiled material after the application is referred to as color steel; Color steel because have light weight, excellent, the inexpensive characteristics user of property can directly be processed into type; Make various products or parts; And need not carry out application, and simplified the ME of sheet metal goods greatly, therefore obtained number of applications such as automobile, boats and ships, household electrical appliances, building materials etc. in a lot of fields.
Under the prerequisite that satisfies the requirement of harsh environmental requirement and user quality; Reduce the cost that the coating process three wastes are handled; Reduce painting hall's running cost and simplify painting technology; At car paint and field of coating a kind of novel car body coating P2Zero notion, i.e. zero release application workshop have appearred in recent years.Its concrete implementation is that the anti-corrosion primer of the used steel plate of requirement vehicle body carries out application before moulding; The vehicle body that gets into automobile factory application workshop does not need to prime again; Only spray one powder background color with the powder Lacquer finish; Therefore can reduce the technology waiting time to greatest extent, cancel between traditional paint, the technology adjustment is more flexible.Owing to cancelled the rust-proofing primer technology in the vehicle body production process, thoroughly eliminated the traditional application weld seam and the problem of the anticorrosion difference of cavity structure, saved application workshop area, reduced three wastes processing costs, atmospheric pollution and liquid, solid waste discharging go to zero.
Precoated coil coating is divided into priming paint, finish paint and back side lacquer by use, and these three kinds of coating are coated on the different positions of steel plate, are bringing into play different effects.Precoated coil coating is different with general industry coating, and it also need satisfy the production technique of pre-coated coil and the requirement that two aspects are used in processing except needs satisfy the general property requirement.The one, because the coating process of color steel paint line is to adopt quick roller application; Cycle is short, speed is fast, for guaranteeing coat-thickness and leveling characteristics, therefore needs certain working viscosity and solid content; The 2nd, coating area is big; Coating is thin, generally is lower than 20 μ m, and defectives such as pin hole, shrinkage cavity, bubble can not occurs after the application.Therefore, the performance of precoated coil coating will be higher than common industrial coating.
At present, less about the patent report of precoated coil coating, (publication number: CN11632017A) disclose a kind of polyamide primer for precoating coiled material, the mechanical property and the salt spray resistance of itself and finish paint compound coating are better for patent documentation.Patent documentation (publication number: CN 101386673A) disclose a kind of precoated coil coating of oily modified epoxy, can adapt to coil painting construction and performance requriements.(publication number: CN 102002306A) disclose a kind of preparation method of precoated coil coating priming paint of water-based, its vibrin that adopts water-based is main filmogen to patent documentation, and metal substrate is had good adhesive and erosion resistance.(publication number: CN 102002307A) disclose a kind of is the precoated coil coating finish paint of emulsion with the waterborne polyester to patent documentation, has good forming process property and decorate properties.
Current precoated coil coating is mainly developing to overlength military service property and environmentally friendly direction.Most crucial part is its main film forming substance in the coating, promptly used emulsion system.The precoated coil coating of above-mentioned patent report is no matter be butyrous or water-based system, employing all be traditional emulsion system, the polymer emulsion particle diameter is big, paint film compactness is poor, protection and decorative effect are relatively poor relatively.
Summary of the invention
The problem that the above precoated coil coating of the present invention exists; A kind of aqueous environment protection nanostructure precoating coil coating finishing paint and preparation method thereof is provided; This aqueous environment protection nanometer precoated coil coating finish paint should have the characteristics of energy-conserving and environment-protective; Should have also simultaneously that the densification of filming, thermodynamics and mechanical stability are high, protection and advantage such as decorate properties is good, weathering resistance and chemical resistance are good, can satisfy each item performance index requirement of pre-coated coil fully to coating and application.
Technical solution of the present invention is: a kind of water nano precoated coil coating finish paint, the mass percent of its main ingredient is: the particle diameter of 40-70% at 100nm with interior water nano polymer emulsion, the pigment of 1-30%; The filler of 5-20%; The active rust-stabilising pigment of 0.1-2%, the inertia rust-stabilising pigment of 5-20%, the auxiliary agent of 0.2-8%; The pH regulator agent of 0.1-0.5%, all the other are deionized water; Wherein the water nano polymer emulsion is by removing organic solvent down vacuum and 100-200 ℃ behind the esters of acrylic acid proportional mixing of hydrophobic type urethane and hydrophilic; To mixture solid content more than or equal to 80%, the deionized water shear agitation that contains the pH regulator agent is then processed.
Above-mentioned particle diameter is an aqueous environment protection acroleic acid polyurethane nanometer polymer emulsion less than the polymer emulsion of 100nm nanometer, and the consumption of this emulsion in coating is 40-70%.
Above-mentioned pigment is selected from white titanium pigment, carbon black, chrome yellow, phthalocyanine blue etc., and consumption is 1-30%
Above-mentioned inertia rust-stabilising pigment is selected from red iron oxide, iron oxide black, yellow oxide of iron etc., and the consumption in coating is 5-20%.
Above-mentioned active rust-stabilising pigment is selected from aluminium triphosphate, zn phosphate, pure aluminium silicate etc., and the consumption in coating is 0.1-2%.
Above-mentioned filler comprises kaolin, coarse whiting, wollastonite powder, talcum powder, mica powder, permanent white, and the consumption in coating is 5-20%.
Above-mentioned pH regulator agent is selected from volatility amine.Like monoethanolamine, triethylamine, N.N-dimethylethanolamine, the consumption in coating is 0.1-0.5%.
The content of auxiliary agent in coating is 0.2-8%, comprising:
1, wetting agent: polyxyethylated alkylphenol.BYK-346 like German Bi Ke (BYK) company.
2, dispersion agent: ethylene copolymer salt.5040 dispersion agents like Henkel Corp..
3, skimmer: organic silicon modified by polyether.Like the BYK-019 that Bi Ke (BYK) company produces, BYK-020.
4, siccative: be the closure organic acid catalyst.BYK-catalyst 450 like Bi Ke company.
5, sanitas: be in the isothiazolinone derivatives one or more.Nordes C15 like the promise moral.
6, mould inhibitor: be in the benzimidazole ester class one or more.Nordes EPW like the promise moral.
7, thickening material: be in alkali swelling type ACRYLIC EMULSION class and the cellulose-type thickening material one or more.Like 1510 of Henkel.
The preparation method of above-mentioned water nano precoated coil coating finish paint is following:
(1) according to the prescription consumption water nano polymer emulsion, wetting agent, dispersion agent, skimmer, sanitas, mould inhibitor, pH regulator agent are joined in the deionized water, in 400-800 rev/min dispersion machine, disperseed 5-15 minute;
(2) add pigment, filler according to formula ratio, in 800-1000 rev/min dispersion machine, disperseed 5-20 minute, be ground to fineness less than 20 μ m with sand mill then;
(3) add siccative by prescription, 500-1000 rev/min was stirred 5-10 minute down;
(4) add thickening material by prescription, 800-1000 rev/min is stirred 5-10 minute to homodisperse after-filtration, packing down.
The invention has the beneficial effects as follows:, solved the problems that general water-based industrial paint exists as the precoated coil coating finish paint owing to adopted the nanometer polymer emulsion of particle diameter below 100nm as main film forming substance.
1, the particle dia of nanometer polymer emulsion is very little, so the paint film that forms is very fine and close, protection and decorative effect meet or exceed the oiliness precoated coil coating of a large amount of external productions of using at present.
2, the surface tension of nanometer polymer emulsion is very low, so have fabulous perviousness, wettability, leveling characteristics and rheological.
3, the prepared water nano precoated coil coating face finish paint of the present invention has safety, nontoxic characteristics, environment is not polluted, simultaneously healthy harmless to the workmen.
Embodiment
The present invention is through test many times, and four specific embodiments that filter out are listed in table 1, but the present invention not only is confined to following examples.In table 1: emulsion is the water soluble acrylic acid polyurethane nano polymer emulsion of particle diameter less than 100nm.
Table 1: component of the present invention is formed embodiment 1-4
Through systematic study and experiment to each component ratio in the water nano precoated coil coating finish paint prescription among the present invention and interpolation order, the embodiment that obtains best performance is following:
Take by weighing 54% nanometer polymer emulsion; 0.25% wetting agent, 0.4% dispersion agent, 0.02% skimmer; 0.25% pH regulator agent; 0.15% sanitas, 0.15% mould inhibitor and 13.38% deionized water join in the paint mixing tank, under 800 rev/mins dispersing speed, disperse 10 minutes.Add 8% white titanium pigment then, 6% red iron oxide, 4% talcum powder, 3.5% mica powder, 3% permanent white, 2.5% kaolin, 0.4% zn phosphate disperseed 15 minutes under 800 rev/mins dispersing speed.Be ground to fineness less than 25 μ m with sand mill then.Add 2.5% siccative again, 800 rev/mins were stirred 5 minutes down, added 1.5% thickening material at last, and it is qualified to transfer to viscosity, with the filtration of 100 mesh filter screens, pack.
By the water nano precoated coil coating finish paint of said components preparation, its performance is listed in table 2.
Table 2: the water nano precoated coil coating finish paint performance index that make by optimization formula
Claims (4)
1. water nano precoated coil coating finish paint, it is characterized in that: the constituent mass per-cent of main raw material is: nanometer polymer emulsion is 40-70%, pigment is 1-30%; The inertia rust-stabilising pigment is 5-20%; Active rust-stabilising pigment is 0.1-2%, and filler is 5-20%, and auxiliary agent is 0.2-8%; The pH regulator agent is 0.1-0.5%, and all the other are deionized water; Wherein the water nano polymer emulsion is to be mixed with the esters of acrylic acid of hydrophilic afterwards at vacuum and the 100-200 ℃ of following organic solvent of removing by the hydrophobic type polymkeric substance; To the solids content of mixture more than or equal to 80%, process with the deionized water shear agitation that contains the pH regulator agent then.
2. a kind of water nano precoated coil coating finish paint according to claim 1 is characterized in that: said nanometer polymer emulsion is an aqueous environment protection acroleic acid polyurethane nanometer polymer emulsion.
3. a kind of water nano precoated coil coating finish paint according to claim 1 is characterized in that: said pigment is selected from white titanium pigment, organic red, organic yellow or phthalocyanine blue; Said inertia rust-stabilising pigment is selected from red iron oxide, iron oxide black or yellow oxide of iron; Said active rust-stabilising pigment is selected from aluminium triphosphate, zn phosphate or pure aluminium silicate; Said filler is selected from kaolin, coarse whiting, wollastonite powder, talcum powder, mica powder and permanent white; Said auxiliary agent comprises dispersion agent, wetting agent, skimmer, thickening material, sanitas, mould inhibitor and siccative.
4. the preparation method of a kind of water nano precoated coil coating finish paint according to claim 1, it is characterized in that: it comprises the following steps:
(1) according to the prescription consumption water nano polymer emulsion, wetting agent, dispersion agent, skimmer, sanitas, mould inhibitor, pH regulator agent are added in the deionized water, under 400-800 rev/min dispersing speed, disperseed 5-15 minute;
(2) add pigment, filler according to formula ratio, disperseed 5-20 minute down at 800-1000 rev/min.Be ground to fineness less than 60 μ m with sand mill then;
(3) add siccative by prescription, 500-1000 rev/min was stirred 5-10 minute down;
(4) add thickening material by prescription, 800-1000 rev/min is stirred 5-10 minute to homodisperse after-filtration, packing down.
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| CN2011104276178A CN102504694A (en) | 2011-12-19 | 2011-12-19 | Water-based naon-sized pre-coated coil top coating and preparation method thereof |
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| CN2011104276178A CN102504694A (en) | 2011-12-19 | 2011-12-19 | Water-based naon-sized pre-coated coil top coating and preparation method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702899A (en) * | 2012-07-03 | 2012-10-03 | 江苏兰陵高分子材料有限公司 | Water-based modified pure acrylic acid anticorrosive paint |
| CN102775868A (en) * | 2012-08-07 | 2012-11-14 | 昆山市万胜化工有限公司 | Water-based finish paint for polyurethane foam material |
| CN103602183A (en) * | 2013-10-22 | 2014-02-26 | 广州擎天材料科技有限公司 | Fast-curing indentation-proof water-based paint for galvanized sheet and preparation method thereof |
| CN103788858A (en) * | 2012-11-05 | 2014-05-14 | 江西新体科技有限公司 | Colored silicon PU (Polyurethane) waterborne field topcoat and preparation method thereof |
| CN104629574A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | High-water-resistance antibacterial waterborne woodware coating |
| CN104629576A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | High-performance water-based wood coating |
| CN104893543A (en) * | 2015-05-29 | 2015-09-09 | 柳州普亚贸易有限公司 | Wire rope surface paint and preparation method thereof |
| CN105331222A (en) * | 2015-12-09 | 2016-02-17 | 夏百庆 | Hydrophilic automobile paint |
| CN105696358A (en) * | 2016-01-28 | 2016-06-22 | 平顶山市环宇星工贸有限公司 | Environment-friendly type composite waterproof coiled material and production method thereof |
| CN106118315A (en) * | 2016-06-30 | 2016-11-16 | 广西梧州龙鱼漆业有限公司 | Aqueous industrial height finish coat varnish and preparation method thereof |
| CN106433367A (en) * | 2016-10-24 | 2017-02-22 | 黄远明 | Underwater hydrophobic wood paint and preparation method thereof |
| CN108250939A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of high-wearing feature hollow rail aluminium alloy plate |
| CN108250938A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of high rigidity hollow rail aluminium alloy plate |
| CN108753049A (en) * | 2018-06-25 | 2018-11-06 | 无锡万博涂料化工有限公司 | A kind of aqueous rubber coating and preparation method thereof |
| CN111906006A (en) * | 2020-06-28 | 2020-11-10 | 广东顺德铁业实业有限公司 | Manufacturing method of precoated metal plate and precoated metal plate |
| CN113530101A (en) * | 2021-07-27 | 2021-10-22 | 北京亿得新材料科技有限公司 | Tower shield heat-insulation waterproof roof system for photovoltaic power generation |
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| US5466286A (en) * | 1994-05-27 | 1995-11-14 | E. I. Du Pont De Nemours And Company | Stable automotive aqueous metallic-flake tint dispersion |
| CN1431264A (en) * | 2003-01-21 | 2003-07-23 | 张万喜 | Moisture dispersion and environment friendly type nano structured industry paint and its producing technique |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5466286A (en) * | 1994-05-27 | 1995-11-14 | E. I. Du Pont De Nemours And Company | Stable automotive aqueous metallic-flake tint dispersion |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702899A (en) * | 2012-07-03 | 2012-10-03 | 江苏兰陵高分子材料有限公司 | Water-based modified pure acrylic acid anticorrosive paint |
| CN102702899B (en) * | 2012-07-03 | 2014-08-20 | 江苏兰陵高分子材料有限公司 | Water-based modified pure acrylic acid anticorrosive paint |
| CN102775868A (en) * | 2012-08-07 | 2012-11-14 | 昆山市万胜化工有限公司 | Water-based finish paint for polyurethane foam material |
| CN103788858A (en) * | 2012-11-05 | 2014-05-14 | 江西新体科技有限公司 | Colored silicon PU (Polyurethane) waterborne field topcoat and preparation method thereof |
| CN103602183A (en) * | 2013-10-22 | 2014-02-26 | 广州擎天材料科技有限公司 | Fast-curing indentation-proof water-based paint for galvanized sheet and preparation method thereof |
| CN104629574A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | High-water-resistance antibacterial waterborne woodware coating |
| CN104629576A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | High-performance water-based wood coating |
| CN104893543A (en) * | 2015-05-29 | 2015-09-09 | 柳州普亚贸易有限公司 | Wire rope surface paint and preparation method thereof |
| CN105331222A (en) * | 2015-12-09 | 2016-02-17 | 夏百庆 | Hydrophilic automobile paint |
| CN105696358A (en) * | 2016-01-28 | 2016-06-22 | 平顶山市环宇星工贸有限公司 | Environment-friendly type composite waterproof coiled material and production method thereof |
| CN105696358B (en) * | 2016-01-28 | 2018-08-03 | 平顶山环宇星防水科技有限公司 | Environment-friendly type composite of water-proof coiled material and its production method |
| CN106118315A (en) * | 2016-06-30 | 2016-11-16 | 广西梧州龙鱼漆业有限公司 | Aqueous industrial height finish coat varnish and preparation method thereof |
| CN106433367A (en) * | 2016-10-24 | 2017-02-22 | 黄远明 | Underwater hydrophobic wood paint and preparation method thereof |
| CN108250939A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of high-wearing feature hollow rail aluminium alloy plate |
| CN108250938A (en) * | 2017-12-28 | 2018-07-06 | 安徽鑫铂铝业股份有限公司 | A kind of high rigidity hollow rail aluminium alloy plate |
| CN108753049A (en) * | 2018-06-25 | 2018-11-06 | 无锡万博涂料化工有限公司 | A kind of aqueous rubber coating and preparation method thereof |
| CN111906006A (en) * | 2020-06-28 | 2020-11-10 | 广东顺德铁业实业有限公司 | Manufacturing method of precoated metal plate and precoated metal plate |
| CN113530101A (en) * | 2021-07-27 | 2021-10-22 | 北京亿得新材料科技有限公司 | Tower shield heat-insulation waterproof roof system for photovoltaic power generation |
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Application publication date: 20120620 |