CN103709854A - Water dispersible fluorocarbon finish coating and preparation method thereof - Google Patents
Water dispersible fluorocarbon finish coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a water dispersible fluorocarbon finish coating. The finish coating consists of the following components in percentage by weight: 20-25% of fluorocarbon resin, 8-11% of acrylic resin, 1-10% of silicon oxide filler, 5-10% of auxiliaries and 50-60% of a solvent. The water dispersible fluorocarbon finish coating disclosed by the invention has a self-cleaning effect and is excellent in stain resistance; meanwhile, the coating improves apparent property through addition of the inorganic filler silicon oxide; the finish coating, through regulating proportion of the silicon oxide filler, can achieve coating effects of high light, semi matte and lusterless, and can improve wear-resisting property of the coating.
Description
Technical field
The present invention relates to paint field, relate in particular to a kind of aqueous dispersion type fluorine carbon finishing paint coating and preparation method thereof.
Technical background
Fluorocarbon coating have excellent weathering resistance, rub resistance, resistance to wiping, stain resistant, acidproof, alkaline-resisting, hate the performances such as oil, hydrophobic.Good Corrosion Protection has benefited from chemical substance and the number of chemical solvents such as fabulous unreactiveness, paint film acid-and base-resisting, salt, for base material provides protective barrier; The type paint film is tough and tensile, surface hardness is high, shock-resistant, anti-flexing, wear resistance are good, demonstrates splendid physical and mechanical properties.Non-maintaining, the present fluororine-carbon coating of automatically cleaning property list has extremely low surface energy, surface dirt can be self-cleaning by rainwater, fabulous hydrophobicity (maximum water-intake rate is less than 5%) and scold oil, minimum frictional coefficient (0.15-0.17), can non-dust absorption and non-fouling, didirtresistance is good.Strong adhesion shows that the surfaces such as the plastics such as the metals such as copper, stainless steel, polyester, Polyurethane, vinylchlorid, cement, matrix material all have its good sticking power, and basic display goes out to invest any properties of materials.Overlength weathering resistance shows in coating and contains a large amount of F-C keys, and determined the stability that it is superpower, not efflorescence, colour-fast, reaches 20 years work-ing life, has the use properties more more excellent than any other class coating.The synthetic teflon resin in du pont company in 1938, develop " Teflon " non-viscous paint, it is that polytetrafluoroethylene (PTFE) is dispersed in solvent with molecule state, then with the high temperature sintering film forming of 360-380 ℃, this coating can be for a long time used at-195--250 ℃, its chemical-resistant surpasses all polymkeric substance, is mainly used in non-sticky metallic coating; As: in non-stick pan, film, polymerization reaction kettle liner.
The sixties in 20th century, U.S. Elf Atochem company develops " Kynar500 " for the poly(vinylidene fluoride) of trade mark (PVDF) fluorocarbon resin, subsequently, is applied among fluorocarbon coating.It has good weathering resistance, water tolerance, stain resistance, chemical-resistant, is particularly useful for the advantage that the extraneous adornment of buildings has other coating to compare.But because PVDF resin is insoluble to usual vehicle, the formation of filming needs the high temperature sintering film forming of 230-250 ℃, so can only be applied on the base material of the fixing resistant to elevated temperatures external wall decorative material such as Aluminum curtain wall plate processing site, that have roasting plant, aluminium section bar, color steel, limit its use.
Nineteen eighty-two, Japan AGC company has developed fluoroolefin-vinyl ether co-polymer (FEVE) resin, this resin has been introduced solvability functional group, tack functional group, crosslinking curing functional group, has been promoted rheological functional group on the basis of fluoroolefin, not only act on all fine qualities of fluoro-resin, but also have, be dissolved at normal temperatures the performance such as crosslinking curing under the conventional solvent such as aromatic hydrocarbons, lipid, ketone, normal temperature.This resin is applied in fluorocarbon coating, makes the Application Areas of fluorocarbon coating expand the organic material such as PVC section bar, plastic-steel section bar, glass reinforced plastic, synthetic glass of non-refractory to; Cannot enter heavy steel plate, the steel construction of baking oven; The road and bridge structure, the external wall that need site operation; And non-ferrous metal, glass material, ceramic, stone woodenware material etc.
The middle and later periods nineties 20th century, water-base fluorocarbon emulsion resin is successfully applied among fluorocarbon coating again.Its high-weatherability, water tolerance, stain resistance, chemical-resistant are compared not a halfpenny the worse with solvent-borne type fluorocarbon coating; Its feature of environmental protection makes it break through easily the environmental protection barrier of some American-European countries; Aqueous, environmental protective fluorocarbon coating has become at present the main direction of paint development in the world.Along with the whole world to the concern of environment day by day promote, increasingly stringent to coating organic volatile (VOC) Abgasgesetz, protection of the environment, the discharge of effectively lowering organic volatile in coating use procedure, be the universe's common recognition.High-performance aqueous coating products substitution conventional solvent type coating products, has become trend of the times.As the patent application of blue ocean, middle mountain water-borne coatings company limited proposition " metallic travel aqueous fluorocarbon coating and preparation method thereof for a kind of exterior wall ", number of patent application: 201310206750.X, this invention is surface-treated by adopting, the fluorine carbon emulsion of the aluminium paste of stabilization and high fluorine content, add functional agent and optimize formulation for coating material, directing agent using the wetting agent for water-based system as metallized coating aluminium pigment, with extremely low add-on, obtain excellent directional effect, developed storage good, application property is good, the high-performance metal flash effect water-based exterior wall fluorine coating that over-all properties is good.Be applied to the application of exterior wall big area, artificial accelerated aging index can reach xenon lamp aging 3000 hours or the ultraviolet accelerated deterioration aqueous paint with flash metal luster of 1000 hours.
Summary of the invention
The object of the invention is to the problem for above-mentioned existence, proposed a kind of aqueous dispersion type fluorine carbon finishing paint coating, this coating has self-cleaning function to dust, greasy dirt and incrustation scale etc.
To achieve these goals and other objects, the present invention is achieved by the following technical solutions:
An aqueous dispersion type fluorine carbon finishing paint coating, is characterized in that, described finish paint coating comprises the component of following weight percentage:
Preferably, described fluorocarbon resin is poly(vinylidene fluoride) multiple copolymer; Described acrylic resin is polyacrylic ester.
Preferably, described polyacrylic ester is thermoplastic resin, and the weight ratio of described polyacrylic resin and described fluorocarbon resin is 1:3-1:2.
More preferably, the quality of described poly(vinylidene fluoride) multiple copolymer is no less than 70% of resin total mass in finish paint coating.
More preferably, the weight ratio of described polyacrylic resin and described fluorocarbon resin is 1:3.
Preferably, described cilicon oxide filler agent is fine silica powder or nano silicon.
Preferably, the granular size of fine silica powder is 6000 orders, and median size is 2.5 microns, and particle diameter is less than the particle of 5 microns and accounts for the more than 90% of total fine silica powder particle number.
Preferably, the granular size of fine silica powder is 8000 orders, 1.6 microns of median sizes, and particle diameter is less than particle number that the particle of 3 microns accounts for total fine silica powder more than 90%.
Preferably, described nano silicon median size 30-50 nanometer.
Preferably, described auxiliary agent is selected from one or more in defoamer, anti-settling agent, suds suppressor, dispersion agent, emulsifying agent and antiseptic-germicide.
Preferably, in the total mass of finish paint coating, the quality percentage composition of described cilicon oxide filler is 2-5%.
More preferably, in the total mass of finish paint coating, the quality percentage composition of described cilicon oxide filler is 2-3%.
Preferably, described solvent is water and is selected from one or more in tetrahydrofuran (THF), dimethyl formamide, N,N-DIMETHYLACETAMIDE, trimethyl phosphite 99, N-Methyl pyrrolidone, diacetone alcohol, propylene glycol monomethyl ether, isophorone, pimelinketone and dimethyl phthalate.
The invention also discloses a kind of method of preparing described finish paint coating, comprise the following steps: fluorocarbon resin, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 25-45 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
The invention also discloses the using method of finish paint coating described above, described using method is that finish paint is baked to curing under the condition of 240-255 ℃.
Preferably, described using method is that finish paint is baked to curing under the condition of 245-250 ℃.
Preferably, the time of described baking is 45~60 seconds.
Compared with prior art, the finish paint coating in the present invention forms after baking-curing, and to film with the contact angle of water be that maximum can reach more than 110 °, and oily pollutant is not easy to adhere to; Meanwhile, film this as hydrophobic film, be also not easy to adhere to water-based dirt.These features make the aqueous dispersion type fluorine carbon finishing paint coating in the present invention have automatically cleaning effect, have the resistance to performance that stains preferably.Meanwhile, due to the interpolation of mineral filler silicon oxide, in the present invention, the apparent property of coating improves, and by regulating the proportioning of silica-filled dose, can obtain Gao Guang, half dumb light, dumb light, unglazed coating result, and improve coating wear resistance.
Embodiment
Below, by specific specific examples explanation embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by the disclosed content of this specification sheets.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification sheets also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Embodiment 1
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment is that " Kynar500 " is the poly(vinylidene fluoride) of trade mark (PVDF) fluorocarbon resin or like product; Acrylic resin is solid content 40-60% pure-acrylic emulsion; Selection of auxiliary general defoaming agent, anti-settling agent, suds suppressor, dispersion agent, emulsifying agent, antiseptic-germicide; Solvent is the mixture of water and aforementioned organic solvent; Cilicon oxide filler agent is 30 ± 5nm nano silicon.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 25-45 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 2
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is particle diameter 50 ± 5nm nano silicon.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 25-45 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 3
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is 6000 order ultrafine silica powders.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 25-45 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 4
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is 8000 order ultrafine silica powders.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 25-45 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 5
The present embodiment is comparative example;
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent addition is 0.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 30 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 6
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is 8000 order fine silica powders.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 30 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 7
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is 2 part of 8000 order fine silica powder and 2 parts of diameter 50 ± 5nm nano silicons.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 30 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
Embodiment 8
In the present embodiment, the formula of aqueous dispersion type fluorine carbon finishing paint coating is as follows:
Fluorocarbon resin described in the present embodiment, acrylic resin, auxiliary agent, solvent are identical with embodiment 1; Cilicon oxide filler agent is 5 part of 6000 order fine silica powder and 1 part of particle diameter 30 ± 5nm nano silicon.
Fluorocarbon resin in the present embodiment, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 30 ℃, add cilicon oxide filler, being uniformly dispersed and grinding obtains aqueous dispersion type fluorine carbon finishing paint coating.
The prepared aqueous dispersion type fluorine carbon finishing paint coating of above-described embodiment 5-8 is toasted to 50S acquisition at 245 ℃ and film accordingly, and test the contact angle of filming with water with quiet contact angle/interfacial tension survey meter, the test result of contact angle is as shown in table 1:
Table 1
Claims (10)
2. finish paint coating as claimed in claim 1, is characterized in that, described fluorocarbon resin is poly(vinylidene fluoride) multiple copolymer; Described acrylic resin is polyacrylic ester.
3. finish paint coating as claimed in claim 2, is characterized in that, described polyacrylic ester is thermoplastic resin, and the weight ratio of described polyacrylic resin and described fluorocarbon resin is 1:3-1:2.
4. finish paint coating as claimed in claim 3, is characterized in that, the quality of described poly(vinylidene fluoride) multiple copolymer is no less than 70% of resin total mass in finish paint coating.
5. finish paint coating as claimed in claim 1, is characterized in that, described auxiliary agent is selected from one or more in defoamer, anti-settling agent, suds suppressor, dispersion agent, emulsifying agent, antiseptic-germicide, flow agent and thixotropic agent.
6. finish paint coating as claimed in claim 1, is characterized in that, in the total mass of finish paint coating, the quality percentage composition of described cilicon oxide filler is 2-5%.
7. finish paint coating as claimed in claim 1, it is characterized in that, described solvent is water and is selected from one or more in tetrahydrofuran (THF), dimethyl formamide, N,N-DIMETHYLACETAMIDE, trimethyl phosphite 99, N-Methyl pyrrolidone, diacetone alcohol, propylene glycol monomethyl ether, isophorone, pimelinketone and dimethyl phthalate.
8. a method of preparing described finish paint coating, comprises the following steps: fluorocarbon resin, acrylic resin, auxiliary agent are joined in solvent and be uniformly dispersed; At the temperature of 24-45 ℃, add cilicon oxide filler, be uniformly dispersed and grind.
9. a using method for the finish paint coating as described in as arbitrary in claim 1-7, described using method is that finish paint is baked to curing under the condition of 240-255 ℃.
10. using method as claimed in claim 9, is characterized in that, the time of described baking is 45-60 second.
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Cited By (7)
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CN104004420A (en) * | 2014-06-11 | 2014-08-27 | 江苏标榜装饰新材料股份有限公司 | Sidewall panel for train carriage |
CN105199494A (en) * | 2015-10-27 | 2015-12-30 | 沈阳化工大学 | Fluorocarbon resin coating and preparation method thereof |
CN109972792A (en) * | 2018-11-21 | 2019-07-05 | 河北腾翔金属制品有限公司 | A kind of improvement weatherability color steel plate and preparation method thereof |
CN110093072A (en) * | 2018-01-28 | 2019-08-06 | 姚建珍 | A kind of formula and preparation method thereof of Teflon waterproof coating paint |
CN111013988A (en) * | 2019-12-20 | 2020-04-17 | 江苏佰大铝业科技有限公司 | Surface treatment process of aluminum veneer for curtain wall |
CN111592798A (en) * | 2019-02-20 | 2020-08-28 | 中路高科交通检测检验认证有限公司 | Self-cleaning material and preparation method thereof |
CN116790162A (en) * | 2022-12-22 | 2023-09-22 | 德杰盟工程科技(苏州)有限公司 | Super-hydrophobic self-cleaning coating, preparation method and application |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111013988A (en) * | 2019-12-20 | 2020-04-17 | 江苏佰大铝业科技有限公司 | Surface treatment process of aluminum veneer for curtain wall |
CN116790162A (en) * | 2022-12-22 | 2023-09-22 | 德杰盟工程科技(苏州)有限公司 | Super-hydrophobic self-cleaning coating, preparation method and application |
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