CN110698936A - Pure water self-cleaning coating and preparation method thereof - Google Patents
Pure water self-cleaning coating and preparation method thereof Download PDFInfo
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- CN110698936A CN110698936A CN201910992698.2A CN201910992698A CN110698936A CN 110698936 A CN110698936 A CN 110698936A CN 201910992698 A CN201910992698 A CN 201910992698A CN 110698936 A CN110698936 A CN 110698936A
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- water
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- acrylic resin
- modified acrylic
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- 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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- 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
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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)
- Paints Or Removers (AREA)
Abstract
The invention discloses a pure water self-cleaning coating and a preparation method thereof, belonging to the technical field of coatings; the raw materials of the paint comprise color paste, water-based fluorine-silicon modified acrylic resin, water-based thickening agent, water-based leveling agent, water-based defoaming agent, water-based dispersing agent, pH regulator, water-based film forming agent and water, wherein the color paste is prepared by grinding composite silicon modified acrylic resin, pigment and water, the resin, the auxiliary agent and the like are pure water, the obtained paint has zero VOC, and the paint is not added with VOC-containing material and diluent in the processing and construction processes so as to meet the zero VOC requirement and realize the non-toxicity, harmless, safe and environment-friendly effects of the product; self-cleaning function: after the coating is constructed, the coating is weather-resistant, alkali-resistant, washing-resistant, free of pinholes, orange peel, sagging and other ill conditions, low in surface energy, free of dust adhesion, free of water drop adhesion, capable of achieving a self-cleaning effect, simple in components and easy to construct.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a pure water self-cleaning coating and a preparation method thereof.
Background
With the upgrading of economic transformation, the appearance requirement of cement infrastructure for urban construction is higher and higher. The surface of the outdoor cement infrastructure is polluted by industrial or automobile waste gas, rainwater, sunlight and the like for about half a year, so that the phenomena of surface discoloration, stain, scaling and damage are caused, potential safety hazards are caused, the outdoor cement infrastructure can be repaired only by renovating and coating at present, the outdoor cement infrastructure is beautiful and clean in appearance, similar exterior wall coatings still have organic solvents, a large amount of money and time are wasted, and the environment is polluted. At present, the development of a low-cost pure water cement base coating with beautiful appearance, lasting weather resistance and low cost is urgently needed, the maintenance period of infrastructure is reduced, the social benefit is improved, the requirements of safety and environmental protection of the coating on the technical requirements of HJ2537-2014 environmental marking products are met, and the pure water property target is achieved.
According to the HJ2537-2014 standard, the water-based exterior wall coating standard requires: the VOC content is lower than 100g/L, and the benzene solvent content is lower than 100 mg/kg. According to the national standard GB/T9755-2014, the stain resistance is less than or equal to 15%, the artificial aging resistance is not less than 600h, and the alkali resistance is 48 h. In order to achieve the self-cleaning antifouling function, the surface energy of the coating is required to be lower than 2.5 multiplied by 10-4N/m。
In order to meet the requirements, the product needs to have zero VOC, water is used as a diluent in the production and construction processes, and the coating has a self-cleaning function. One of the difficulties is: the coating has the characteristic of zero VOC, so that the coating can be fully dispersed after being diluted by water, and the coating is free from morbidity; difficulty two: the self-cleaning and anti-fouling characteristics of the coating require low surface energy after the coating is sprayed.
At present, many self-cleaning coatings are reported, for example, a Chinese patent application with the patent application number of 201811052852.X and the invention name of 'a weather-resistant, wear-resistant, anti-fouling and self-cleaning waterproof coating with environmental protection and high adhesion' still fails to solve the problems, and the coating has complex components.
Disclosure of Invention
An object of the present invention is to provide a pure water self-cleaning coating material to solve the above problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a pure water self-cleaning coating is composed of the following raw materials by weight percent:
wherein the color paste is prepared by grinding composite silicon modified acrylic resin, pigment and water.
The invention selects two self-crosslinking modified acrylic mixed resins, namely composite silicon modified acrylic resin (capable of being ground) and water-based fluorine-silicon modified acrylic resin (non-ground). The composite silicon modified acrylic resin can adopt composite silicon modified acrylic resin NG318 provided by Guangdong Nissan chemical coatings Co., Ltd, does not contain an organic solvent, is ground and dispersed with pigments such as titanium dioxide and water according to a certain proportion, has a certain defoaming function, has a mesh-through structure, is good in pigment wettability, plump and fine, strong in stain resistance and alkali resistance, high in drying speed and has a self-cleaning function. The water-based fluorine-silicon modified acrylic resin can adopt water-based fluorine-silicon modified acrylic resin F-3300 provided by Qingdao Hongfeng fluorine-silicon technology limited company, has excellent stain resistance, no organic solvent, no toxicity and harm, good wettability, good leveling property, strong film forming property and super weather resistance, the proportion of the water-based fluorine-silicon modified acrylic resin in the paint is about 52-60%, the two resins are synergistic with each other, and a special preparation method is adopted, so that the problems in the prior art are solved.
In addition, the aqueous thickener can be selected from an aqueous thickener R-80 of Handan Ruida, the aqueous flatting agent can be a German Pico flatting agent BYK-333, the aqueous defoaming agent can be a German Pico defoaming agent BYK-214, the aqueous dispersant can be a Pasteur defoaming agent PX 4575, and the aqueous film-forming assistant can be HY-12C of Michael chemical engineering. Of course, not limited to the brands and brands described above.
The invention adopts water as solvent, and the proportion of the coating is 12-19%
As a preferred technical scheme, the pigment is titanium dioxide.
As a preferable technical scheme, the mass ratio of the composite silicon modified acrylic resin to the pigment to the water is as follows: composite silicon modified acrylic resin: pigment: water ═ 12-18: (65-75): (12-16).
As a further preferable technical scheme, the mass ratio of the composite silicon modified acrylic resin, the pigment and the water is as follows: composite silicon modified acrylic resin: pigment: water 16:70: 14.
The preferable technical scheme is that the material comprises the following raw materials in percentage by weight:
by adopting the pigments in the proportion, the performance of the obtained paint can be optimal.
The second purpose of the invention is to provide a preparation method of the pure water self-cleaning coating, which adopts the technical proposal that,
firstly, preparing color paste: mixing and stirring the composite silicon modified acrylic resin, the pigment and the water in the proportion uniformly, and grinding on a sand mill to obtain color paste;
then, the aqueous fluorine-silicon modified acrylic resin, the aqueous auxiliary agent and water are sealed, mixed and stirred uniformly, then the color paste is added for sealing and stirring uniformly, then the pH regulator is added for regulating the pH value to 7.8-8.3, and the mixture is filtered and filled after being inspected to be qualified, thus obtaining the fluorine-silicon modified acrylic resin.
Compared with the prior art, the invention has the advantages that: the resin, the additive and the like are pure water, the obtained coating is zero VOC, and VOC-containing materials and diluents are not added in the processing and construction of the coating, so that the zero VOC requirement is met, and the product is non-toxic, harmless, safe and environment-friendly; self-cleaning function: after the coating is constructed, the coating is weather-resistant, alkali-resistant, washing-resistant, free of pinholes, orange peel, sagging and other ill conditions, low in surface energy, free of dust adhesion, free of water drop adhesion, capable of achieving a self-cleaning effect, simple in components and easy to construct.
Detailed Description
The present invention will be further described with reference to the following examples.
Examples 1 to 3
In the examples, the composite silicon-modified acrylic resin is exemplified by NG318 resin provided by guangdong japanese chemical coatings ltd, and the aqueous fluorosilicone-modified acrylic resin is exemplified by F-3300 resin provided by Qingdao Hongfeng fluorosilicone technologies ltd, however, those skilled in the art know that any resin having the same chemical composition as the NG318 and F-3300 resin can accomplish the present invention.
The following raw materials in parts by weight were ground to obtain a white slurry,
titanium dioxide powder 70 weight portions
Composite silicon modified acrylic resin NG 31816 parts by weight (in comparative example 1, aqueous fluorine silicon is used instead)
Modified acrylic resin F-330016 weight portions
14 parts by weight of water
The raw materials in the grinding formula of the white slurry are mixed and stirred uniformly, ground on a sand mill until the fineness is 30 mu m, and filtered and filled into a PE plastic barrel for standby after the inspection is qualified, namely the white slurry in the table 1.
Then, according to the weight parts of other components shown in the following table 1, F-3300 resin, aqueous auxiliary agent and water are mixed and stirred uniformly in a closed manner, white slurry is added to be stirred uniformly in a closed manner, pH value is adjusted to 7.8-8.3 by adding a pH regulator, and the mixture is filtered and filled after being inspected to be qualified.
TABLE 1 parts by weight of the components
Comparative example 1
To demonstrate the synergistic effect between the two resins of the present invention in terms of self-cleaning properties, the comparative example replaces resin F-3300 with resin NG 31816, the contents of the components of which are shown in Table 1.
Performance testing
Sampling test is carried out on the coatings obtained in examples 1-3 and comparative example 1, a plate is manufactured by adopting an airless spraying process at normal temperature in a laboratory, 2 spraying passes are required, the thickness of each pass of dry film is about 30-40 mu m, and the test results of each coating after 7 days of maintenance are shown in table 2:
table 2 table of performance test results
From the above table, it can be seen that the performances of the two resins of the present application in the aspects of surface energy, stain resistance, etc. are greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The pure water self-cleaning coating is characterized by comprising the following raw materials in percentage by weight:
25 to 30 percent of color paste
52 to 60 percent of waterborne fluorine-silicon modified acrylic resin
0.2 to 0.5 percent of water-based thickening agent
0.1 to 0.2 percent of water-based flatting agent
0.1 to 0.3 percent of water-based defoaming agent
0.2 to 0.3 percent of aqueous dispersant
0.1 to 0.5 percent of pH regulator
0.3 to 0.5 percent of aqueous film forming agent
The balance of water, which is 100 percent in total;
wherein the color paste is prepared by grinding composite silicon modified acrylic resin, pigment and water.
2. The pure water self-cleaning coating of claim 1, wherein the pigment is titanium dioxide.
3. The pure water self-cleaning coating according to claim 1, wherein the mass ratio of the composite silicon modified acrylic resin to the pigment to the water is as follows: composite silicon modified acrylic resin: pigment: water = (12-18): (65-75): (12-16).
4. The pure water self-cleaning coating according to claim 3, wherein the mass ratio of the composite silicon modified acrylic resin to the pigment to the water is as follows: composite silicon modified acrylic resin: pigment: water =16:70: 14.
5. The pure water self-cleaning coating according to claim 1, which is characterized by comprising the following raw materials in percentage by weight:
25 percent of color paste
60 percent of waterborne fluorine-silicon modified acrylic resin
0.3 percent of aqueous thickening agent
0.1 percent of water-based leveling agent
0.1 percent of water-based defoaming agent
0.2 percent of aqueous dispersant
0.2 percent of pH regulator
0.3 percent of aqueous film forming agent
The balance being water, the total being 100%.
6. The process for preparing a purely aqueous self-cleaning coating according to claim 1, characterized in that,
firstly, preparing color paste: mixing and stirring the composite silicon modified acrylic resin, the pigment and the water in the proportion uniformly, and grinding on a sand mill to obtain color paste;
then, the aqueous fluorine-silicon modified acrylic resin, the aqueous auxiliary agent and water are sealed, mixed and stirred uniformly, then the color paste is added for sealing and stirring uniformly, then the pH regulator is added for regulating the pH value to 7.8-8.3, and the mixture is filtered and filled after being inspected to be qualified, thus obtaining the fluorine-silicon modified acrylic resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910992698.2A CN110698936A (en) | 2019-10-18 | 2019-10-18 | Pure water self-cleaning coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910992698.2A CN110698936A (en) | 2019-10-18 | 2019-10-18 | Pure water self-cleaning coating and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521822A (en) * | 2020-12-02 | 2021-03-19 | 韦琪燕 | Polyacrylate composition, water-based paint and preparation method thereof |
| CN112574629A (en) * | 2020-12-11 | 2021-03-30 | 中国科学院兰州化学物理研究所 | Water-based antifouling paint and application thereof |
| CN115029065A (en) * | 2022-06-24 | 2022-09-09 | 厦门防水博士工程技术有限公司 | Roof weather-resistant hydrophobic self-cleaning coating and preparation method thereof |
| CN117070114A (en) * | 2023-10-18 | 2023-11-17 | 广州中海涂装科技有限公司 | Quick rain-resistant weather-resistant water-based silicon-fluorine acrylic finish paint and preparation method thereof |
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| CN107974156A (en) * | 2017-11-24 | 2018-05-01 | 黄禹 | A kind of environment-friendly water-based stripping lacquer of automobile using and its preparation method and application |
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Patent Citations (4)
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| CN1616499A (en) * | 2003-11-13 | 2005-05-18 | 刘祥新 | Method for producing water silion ion modified acrylic resin |
| CN103013266A (en) * | 2012-10-29 | 2013-04-03 | 苏州市建筑科学研究院有限公司 | Reflection heat insulating coating for building |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521822A (en) * | 2020-12-02 | 2021-03-19 | 韦琪燕 | Polyacrylate composition, water-based paint and preparation method thereof |
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| CN115029065A (en) * | 2022-06-24 | 2022-09-09 | 厦门防水博士工程技术有限公司 | Roof weather-resistant hydrophobic self-cleaning coating and preparation method thereof |
| CN117070114A (en) * | 2023-10-18 | 2023-11-17 | 广州中海涂装科技有限公司 | Quick rain-resistant weather-resistant water-based silicon-fluorine acrylic finish paint and preparation method thereof |
| CN117070114B (en) * | 2023-10-18 | 2023-12-26 | 广州中海涂装科技有限公司 | Quick rain-resistant weather-resistant water-based silicon-fluorine acrylic finish paint and preparation method thereof |
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