CN1454949A - Self-cleaning external wall organic coating for building and preparing method thereof - Google Patents
Self-cleaning external wall organic coating for building and preparing method thereof Download PDFInfo
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- CN1454949A CN1454949A CN 03117024 CN03117024A CN1454949A CN 1454949 A CN1454949 A CN 1454949A CN 03117024 CN03117024 CN 03117024 CN 03117024 A CN03117024 A CN 03117024A CN 1454949 A CN1454949 A CN 1454949A
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Abstract
本发明属化工建材领域，是一种具有自清洁功能外墙建筑有机涂料。现有涂料制备不方便，耐污性仍不理想。本发明选用一定尺寸和形状的无机颜填料和低表面张力的疏水助剂，按用量比与丙烯酸类乳液、其它颜填料、助剂混配，从而得到具有自清洁功能外墙建筑有机涂料。该体系利用现有涂料的制备方法，使制备更显简便，降低成本。本发明涂料可直接大规模涂刷于各种建筑物外墙，具有优良的自清洁性和户外耐老化性。The invention belongs to the field of chemical building materials, and relates to an organic paint for exterior wall construction with self-cleaning function. The preparation of existing coatings is inconvenient, and the stain resistance is still unsatisfactory. The present invention selects inorganic pigments and fillers of a certain size and shape and hydrophobic additives with low surface tension, and mixes them with acrylic emulsion, other pigments and fillers, and additives according to the dosage ratio, thereby obtaining an organic coating for exterior wall construction with self-cleaning function. The system utilizes the existing coating preparation method, which makes the preparation more convenient and reduces the cost. The coating of the present invention can be directly painted on the outer walls of various buildings on a large scale, and has excellent self-cleaning properties and outdoor aging resistance.
Description
Technical field
The invention belongs to the chemical building material technical field, relate to a kind of automatically cleaning external wall of building organic coating and preparation method thereof with lotus leaf function.
Background of invention
Along with the sustained, stable growth of China's economy and improving constantly of people's living standard, building and the positive fast development of decoration trade are estimated according to the Ministry of Construction, the annual completion floor area of building of current China, and the city is at 500,000,000 M
2More than, the rural area is at 700,000,000 M
2More than, the area that needs to decorate is at least at 6,000,000,000 M
2More than, add the decoration of the newly-built various public top-grade buildings same period.If 7 years be to overhaul the cycle with external ordinary residence exterior wall again, external wall of high-rise building 10 years was to overhaul the cycle, and then the demand of China's outer wall building coating will be more considerable, and annual requirement can reach 2,000,000 tons.But present domestic exterior wall coating variety is single, low grade products is many, and its exemplary shortcomings is that outside durabitity is poor, and in work-ing life short (general 5 years work-ing life), easily infiltration is easily stain.Its direct result is that mosaic is used in domestic high-grade decoration of exterior wall aspect more than 80%, sintering face brick and glass curtain wall etc., and shortcoming is the cost height, and is dangerous big, and easy to leak is difficult for repairing, and color is single etc.At present, many cities have been put into effect that serial policy restriction Highrise buildings uses glass curtain wall, mosaic, sintering face brick and must have been replaced face brick and mosaic as a series of measures such as building external decorative materials with outer wall building coating, believe that these measure meetings are progressively adopted in the whole nation.The present task of top priority is development environment close friend's as early as possible a multi-functional high-performance exterior wall building coating.In recent years, silicon-third exterior wall latex coating and fluorocarbon coating though developed, though its outside durabitity, water-repellancy and resistance to soiling increase, its resistance to soiling is still undesirable, especially there is not self-cleaning function (even fluorocarbon coating, its coating also only is 108 to the contact angle of water).
How to have the self-cleaning function that resembles lotus leaf be the hot subject that external in recent years colleges and universities and major company are researched and developed on surface design and the modification by the material surface that makes coating, for example, people (Chem.Mater.2000 such as the Kiyoharu Tadanaga of Osaka, Japan university, 12,590-592) prepare flower-shaped Al earlier
2O
3Film is again at Al
2O
3Form the thick TiO of 5-10nm by sol-gel method on the film
2Gel coat obtains super-hydrophobic super oleophobic boundary material thereby handle with fluorine-containing silane reagent at last.People such as the Toshiya Watanabe of Tokyo Univ Japan (Langmuir, 2000,16,7044-7047 7048-7050) obtains Al by sol-gel method earlier with Europe patent (EP0772514)
2O
3, or TiO
2Or SiO
2Film is handled the biomimetic material that obtains having the automatically cleaning effect with fluorine-containing silane reagent then.Jan Genzer and Kirill Efimenko (Science, 2000, Vol.290 2130-2133) assembles by machinery at Science290 (15) report in 2000, with polydimethyl silane mechanical stretching, with UV+O
3Handle and connect fluorine-containing silane reagent again, obtain having the ultra-hydrophobic polymer surface.Domestic then have the chemistry Jiang Lei researcher of institute of the Chinese Academy of Sciences to obtain two dredging or parents' binary boundary material by similar method.But mainly be up to now (as Al by inorganic coating
2O
3, SiO
2, TiO
2Deng) surface topography control and the use of super-hydrophobicity reagent, to obtain the hydrophobic oleophobic boundary material, though English is also referred to as coating, but also differ greatly from the coating (mainly being organic coating) of large-scale application on buildings truly.German patent DE 19921876A1 has prepared a kind of automatically cleaning organic coating with lotus leaf function by the method for blend such as powder body material, silicon emulsion, hydrophober, but because prices of raw and semifnished materials costliness, market is limited.In the patent (application number 01142643.8) in front, reported a kind of lotus leaf function self-cleaning bionic external wall of building organic coating and preparation method thereof that has by the surface modification of powder, the use of low surface tension material, but there is preparation inconvenience, the higher deficiency that waits of cost.
Summary of the invention
The object of the present invention is to provide the external wall of building organic coating and preparation method thereof that a kind of starting material cheapness, preparation method are simple more and have the automatically cleaning better effects if of lotus leaf function.
The automatically cleaning external wall of building organic coating that the present invention proposes is made up of color stuffing, acrylic emulsions, low surface tension material and auxiliary agent.Wherein, (1) contains the inorganic color stuffing of a kind of particle diameter at 1-50 μ m at least; (2) contain a kind of acrylic emulsions at least; (3) contain a kind of compound or resin of low surface tension at least; (4) other latex coating used additives is with conventional exterior wall latex paint.
Particular content of the present invention further describes as follows:
Specifically consisting of of automatically cleaning external wall of building organic coating of the present invention: (1) selects the inorganic color stuffing with special shape and certain grain size distribution for use, and consumption accounts for the 30-85wt% of coating total amount; (2) acrylic emulsions accounts for the 15-70wt% of coating total amount; (3) select for use and have the hydrophobic auxiliary agent of low surface tension, this auxiliary agent can be dispersed in the emulsion paint, and can be in the film coated surface enrichment in the coating film process, formation has very strong hydrophobic film, and consumption accounts for other usual auxiliaries in 0.2-20wt% (4) coating of acrylic emulsions total amount such as dispersion agent, thickening material, film coalescence aid, defoamer etc. and presses the 0.5-5.0wt% of color stuffing and emulsion weight respectively and add; (4) visual coating application of the content of water and solids constituent suitably increase in the coating; (5) color of coating can be mixed colours on request.
Inorganic color stuffing such as titanium dioxide, wollastonite powder etc. in above-mentioned each component, acrylic emulsions such as pure acrylic acid ester class emulsion, organosilicon-modified acrylate class emulsion etc., hydrophobic auxiliary agent such as siliceous or fluorine-containing resin emulsion or nano-interface hydrophobizing agent of its modification etc., all the other are same as the prior art.
Automatically cleaning external wall of building organic coating of the present invention can preferentially use following component:
Inorganic color stuffing among the present invention is that in titanium dioxide and other existing color stuffing one or more are as talcum powder, silica powder, wollastonite, lime carbonate, lithopone etc.
Inorganic color stuffing among the present invention is with at 5-50 μ m particle diameter, and effect is better.
Better the inorganic color stuffing particle diameter is 10-20 μ m.
Inorganic color stuffing among the present invention is preferentially selected for use and is helped forming the coating structure with certain convex-concave surface, and they are the silica powder with acicular structure wollastonite, irregular sharp tooth, the calcite of diamond structure etc.
The hydrophobic auxiliary agent of low surface tension is preferentially selected the content of wax, siliceous or fluorine-containing resin emulsion or nano-interface hydrophobizing agent or its mixture of its modification for use.
Acrylic emulsions among the present invention is to be formed by letex polymerization by two or more monomer in acrylic ester monomer, vinylbenzene, siliceous or fluorine-containing function monomer, the vinyl acetate.
The present invention's emulsion preferably is to use pure acrylic acid ester emulsion, benzene emulsion, organosilicon-modified acrylic emulsion or organic fluorine modified acrylic acid emulsion, or their mixture.
Liquid phase in the coating of the present invention is a water, is aqueous, environmental protective coating, and the visual coating application of the content of water suitably adds.
Preparation method with self-cleaning function external wall of building organic coating is as follows:
An amount of dispersion agent, thickening material, anti-enzyme agent, defoamer, frostproofer etc. are dispersed in an amount of water, add titanium dioxide and other powders then according to the above ratio successively, in dispersion machine high speed dispersed with stirring.When color stuffing in water fineness of dispersion less than 75 μ m after, reduce stirring velocity, add the emulsion binder of above-mentioned amount, hydrophobic auxiliary agent, defoamer and film coalescence aid and fully stir, adjust the pH value and the viscosity of coating at last.The all components add-on as previously mentioned, last pH value is identical with coating of the prior art with viscosity.
Product of the present invention directly casts in the above-mentioned coating system on metal sheet or the asbestos plate with standard lines rod or line box, after the drying at room temperature 7, measures the performance of filming.Its salient features characterizes as follows:
Surface contact angle is measured by the OCA video optics contact angle measurement that German Dataphysics instrument limited-liability company produces.The artificial anti-aging test that quickens is measured by the accelerated aging test case that U.S. Q-Pannel Lab Products company produces.Other performance is undertaken by GB/T9755-1995.
The present invention utilizes the existing method for preparing coating to make coating, make preparation process more apparent simple, and reduced cost, harmless pollution-free, starting material of the present invention source is abundant and cheap, all above the national standard of existing exterior wall latex building coating, and coating has significant self-cleaning function to contact angle 〉=120 of water ℃ to product through the every index of These parameters test shows.Practical application shows that this building coating can keep skin totally to clean for a long time.
Embodiment
When following prescription is implemented with reality the amount and decide, it is all within the scope of the invention.
Example 1
Coating basic recipe 1
Raw material consumption (wt%)
Water 25
Modifying cinepazid emulsion 32
Hydrophobic auxiliary agent 4
Titanium dioxide 15
Calcite (7 μ m) 20
Thickening material 0.2～1
PH regulator agent 0.2～1
Defoamer 0.1～0.5
Dispersion agent 0.4
Film coalescence aid 1.5
Frostproofer 1
Method preparation by above-mentioned prescription is pressed exterior wall latex paint can obtain having self-cleaning function exterior wall organic architecture coating.It is filmed to the surface contact angle of water 〉=122 ℃, manually quickens ageing-resistant time 〉=700 hour, and other exterior wall latex paint performance is passed through.Example 2
Coating basic recipe 2
Raw material consumption (wt%)
Water 28
Pure-acrylic emulsion 20
Hydrophobic auxiliary agent 4
Titanium dioxide 15
Silica powder (20 μ m order) 21
Wollastonite 10
Thickening material 0.2～1
PH regulator agent 0.2～1
Defoamer 0.1～0.5
Dispersion agent 0.4
Film coalescence aid 1.5
Frostproofer 1
Method preparation with above-mentioned prescription is pressed exterior wall latex paint can obtain having self-cleaning function exterior wall organic architecture coating.It is filmed to the surface contact angle of water 〉=130 ℃, manually quickens ageing-resistant time 〉=1000 hour, and other exterior wall latex paint performance is passed through.Example 3
Coating basic recipe 3
Raw material consumption (wt%)
Water 28
Organosilicon crylic acid latex 26
Hydrophobic auxiliary agent 3
Titanium dioxide 15
Silica powder (45 μ m order) 10
Calcite 16
Thickening material 0.2～1
PH regulator agent 0.2～1
Defoamer 0.1～0.5
Dispersion agent 0.4
Film coalescence aid 1.5
Frostproofer 1
With the method preparation that above-mentioned prescription is pressed exterior wall latex paint, can obtain having the exterior wall organic architecture coating of self-cleaning function.It is filmed to the surface contact angle of water 〉=150 ℃, manually quickens ageing-resistant time 〉=1000 hour, and other exterior wall latex paint performance is passed through.
Claims (10)
1. external wall of building organic coating with self-cleaning function is characterized in that adopting following component:
(1) the inorganic color stuffing particle diameter is 1-50 μ m; Consumption accounts for the 30-85wt% of coating total amount;
(2) contain acrylic emulsions in the coating, its consumption accounts for the 15-70wt% of coating total amount;
(3) the hydrophobic auxiliary agent of low surface tension, consumption accounts for the 0.2-20wt% of acrylic emulsions total amount
(4) 0.5%-5.0wt% that other usual auxiliaries is pressed color stuffing and emulsion gross weight respectively in the coating adds;
(5) visual coating application of the content of water and solid content suitably increase in the coating;
(6) color of coating can be mixed colours on request.
2. according to claim 1 have a self-cleaning function external wall of building organic coating, it is characterized in that inorganic color stuffing is one or more in titanium dioxide and existing other color stuffing.
3. according to claim 1 have a self-cleaning function external wall of building organic coating, it is characterized in that the inorganic color stuffing particle diameter is 5-50 μ m.
4. according to claim 3 have a self-cleaning function external wall of building organic coating, it is characterized in that the inorganic color stuffing particle diameter is 10-20 μ m.
5. according to claim 2 have a self-cleaning function external wall of building organic coating, it is characterized in that other inorganic color stuffing is to have the silica powder of acicular structure wollastonite or irregular sharp tooth or the calcite of diamond structure.
6. according to claim 1 have a self-cleaning function external wall of building organic coating, and the hydrophobic auxiliary agent that it is characterized in that low surface tension is nano-interface hydrophobizing agent or its mixture of the siliceous or fluorine-containing resin emulsion of the content of wax or its modification.
7. according to claim 1 have a self-cleaning function external wall of building organic coating, it is characterized in that acrylic emulsions is to be formed by letex polymerization by following two or more monomer: in acrylic ester monomer, vinylbenzene, siliceous or fluorine-containing function monomer, the vinyl acetate.
8. according to claim 6 have a self-cleaning function external wall of building organic coating, it is characterized in that acrylic emulsions is a kind of or its mixture of organosilicon-modified acrylic emulsion, organic fluorine modified acrylic acid emulsion, pure acrylic acid ester emulsion or benzene emulsion.
9. according to claim 1 have a self-cleaning function external wall of building organic coating, it is characterized in that liquid phase is a water in the coating.
10. the preparation method with the organic outer wall building coating of self-cleaning function according to claim 1, it is characterized in that in the round-bottomed flask that mechanical stirring, thermometer, prolong are housed, an amount of dispersion agent, thickening material, anti-enzyme agent, defoamer, frostproofer etc. are dispersed in an amount of water, add titanium dioxide and other color stuffings then by a certain percentage successively, in dispersion machine high speed dispersed with stirring.When color stuffing in water fineness of dispersion less than 75 μ m after, reduce stirring velocity, adding emulsion binder, hydrophobic auxiliary agent, defoamer and film coalescence aid fully stirs, adjust the pH value and the viscosity of coating at last, have self-cleaning function external wall of building organic coating by the direct preparation of acrylic latex coating ordinary method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031170242A CN1195030C (en) | 2003-05-19 | 2003-05-19 | Self-cleaning external wall organic coating for building and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031170242A CN1195030C (en) | 2003-05-19 | 2003-05-19 | Self-cleaning external wall organic coating for building and preparing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1454949A true CN1454949A (en) | 2003-11-12 |
| CN1195030C CN1195030C (en) | 2005-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031170242A Expired - Fee Related CN1195030C (en) | 2003-05-19 | 2003-05-19 | Self-cleaning external wall organic coating for building and preparing method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335578C (en) * | 2005-05-26 | 2007-09-05 | 北京科技大学 | Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method |
| WO2008113228A1 (en) * | 2007-03-16 | 2008-09-25 | Shenzhen Oceanpower Industrial Co., Ltd. | 10rp 7/3 pigment composition, the substance color lump made of the composition and the preparation method thereof |
| CN101067062B (en) * | 2007-06-08 | 2010-12-22 | 东莞拓扑实业有限公司 | Preparation method of high-performance exterior wall paint |
| CN102816489A (en) * | 2012-08-21 | 2012-12-12 | 江苏紫石化工科技有限公司 | Interior wall stain resistant emulsion paint and preparation method thereof |
| CN104277620A (en) * | 2014-09-04 | 2015-01-14 | 上海露蕾化工（六安）有限公司 | Environment-friendly wall coating |
| CN104893466A (en) * | 2015-05-27 | 2015-09-09 | 苏州德翔装饰工程有限公司 | Hydrophobic coating for external wall of building and preparation method of hydrophobic coating |
| CN106118327A (en) * | 2016-06-30 | 2016-11-16 | 遵义市恒新化工有限公司 | A kind of building external paint and preparation method thereof |
| CN106398446A (en) * | 2016-08-31 | 2017-02-15 | 广东三和化工科技有限公司 | Self-cleaning peelable spray paint with low transparency and preparation method thereof |
| CN107868549A (en) * | 2017-10-20 | 2018-04-03 | 贵州中亚高科涂料有限公司 | A kind of lotus leaf flowing water emulsion paint |
| CN112210257A (en) * | 2019-07-09 | 2021-01-12 | 常州市大使涂料有限公司 | Non-sticking clean-keeping self-cleaning coating |
-
2003
- 2003-05-19 CN CNB031170242A patent/CN1195030C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335578C (en) * | 2005-05-26 | 2007-09-05 | 北京科技大学 | Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method |
| WO2008113228A1 (en) * | 2007-03-16 | 2008-09-25 | Shenzhen Oceanpower Industrial Co., Ltd. | 10rp 7/3 pigment composition, the substance color lump made of the composition and the preparation method thereof |
| CN101067062B (en) * | 2007-06-08 | 2010-12-22 | 东莞拓扑实业有限公司 | Preparation method of high-performance exterior wall paint |
| CN102816489A (en) * | 2012-08-21 | 2012-12-12 | 江苏紫石化工科技有限公司 | Interior wall stain resistant emulsion paint and preparation method thereof |
| CN104277620A (en) * | 2014-09-04 | 2015-01-14 | 上海露蕾化工（六安）有限公司 | Environment-friendly wall coating |
| CN104893466A (en) * | 2015-05-27 | 2015-09-09 | 苏州德翔装饰工程有限公司 | Hydrophobic coating for external wall of building and preparation method of hydrophobic coating |
| CN106118327A (en) * | 2016-06-30 | 2016-11-16 | 遵义市恒新化工有限公司 | A kind of building external paint and preparation method thereof |
| CN106398446A (en) * | 2016-08-31 | 2017-02-15 | 广东三和化工科技有限公司 | Self-cleaning peelable spray paint with low transparency and preparation method thereof |
| CN107868549A (en) * | 2017-10-20 | 2018-04-03 | 贵州中亚高科涂料有限公司 | A kind of lotus leaf flowing water emulsion paint |
| CN112210257A (en) * | 2019-07-09 | 2021-01-12 | 常州市大使涂料有限公司 | Non-sticking clean-keeping self-cleaning coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1195030C (en) | 2005-03-30 |
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