CN112694795A - High-performance inorganic exterior wall coating and preparation method thereof - Google Patents
High-performance inorganic exterior wall coating and preparation method thereof Download PDFInfo
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- CN112694795A CN112694795A CN202011582316.8A CN202011582316A CN112694795A CN 112694795 A CN112694795 A CN 112694795A CN 202011582316 A CN202011582316 A CN 202011582316A CN 112694795 A CN112694795 A CN 112694795A
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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
- C09D125/00—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 at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to a high-performance inorganic exterior wall coating and a preparation method thereof, wherein the high-performance inorganic exterior wall coating is prepared from the following raw materials in parts by weight: water, hydroxyethyl cellulose, attapulgite, a defoaming agent, a dispersing agent, a wetting agent, an adhesion promoter, titanium dioxide, mica powder, ground limestone, calcined kaolin, an antifreezing agent, a film-forming auxiliary agent, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, small-molecular organic modified silica sol and a polyurethane thickener. The invention has the beneficial effects that: the product is free from artificial addition of preservatives, low in odor and VOC, water-based, environment-friendly and safe, low in macromolecular organic matter content, excellent in fireproof performance and excellent in stain resistance, scrubbing resistance and weather resistance, the defects of early rain marks, saltpetering and the like in construction are obviously improved, and the adaptability of the product to early environment is obviously improved. Therefore, the method has great significance in practical application.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a high-performance inorganic exterior wall coating and a preparation method thereof.
Background
According to the regulations of GB50222-2017 'fire code for interior decoration design of buildings' 3.0.6, the inorganic decoration coating applied to the A-grade base material can be used as an A-grade decoration material; the organic decorative coating is applied to A-level base materials, has a wet coating ratio of less than 1.5 kg/resistant and a dry film thickness of not more than 1.0mm, and can be used as B1-level decorative materials. Because of the regulation, the inorganic building coating has good fireproof performance and belongs to A grade. Inorganic architectural coatings have become a hotspot for recent developments. The inorganic interior wall coating is sold as a mature and stable product, while the inorganic exterior wall coating is limited by early performance, has insufficient adaptability to the current domestic construction environment, causes the phenomena of efflorescence and blooming, and is not popularized in a large scale.
Disclosure of Invention
The invention provides a high-performance inorganic exterior wall coating and a preparation method thereof, and the exterior wall coating not only has excellent stain resistance, washing resistance and weather resistance, but also can obviously improve the defects of rainmarks, saltpetering and the like in the early construction period.
The technical scheme of the invention is realized as follows: a high-performance inorganic exterior wall coating is composed of the following raw materials in parts by weight:
further, the hydroxyethyl cellulose is nonionic soluble cellulose ether.
Further, one or more than two of the defoaming agent mineral oil defoaming agent or organic silicon defoaming agent can be combined randomly.
Further, the dispersant is a sodium polycarboxylate dispersant.
Further, the wetting agent is one of a nonionic surfactant and an anionic surfactant, and the two or more of the nonionic surfactant and the anionic surfactant are combined randomly.
Further, the titanium dioxide is rutile type titanium dioxide.
A preparation method of a high-performance inorganic exterior wall coating comprises the following steps:
(1) firstly, adding water into a dispersion cylinder, then adding hydroxyethyl cellulose and attapulgite at the rotating speed of 300-500 r/min, then increasing the rotating speed to 600-800 r/min, stirring for 1-3 min, then adding a defoaming agent, a dispersing agent, a wetting agent and an adhesion promoter, and continuously stirring for 3-5 min;
(2) then adding titanium dioxide, mica powder, heavy calcium carbonate and calcined kaolin, stirring to a uniform state, then adjusting the rotating speed to 1200-1500 r/min, and stirring for 15-20 min until the fineness is less than or equal to 50 microns;
(3) and then adjusting the rotating speed to 800-1000 r/min, then sequentially adding an antifreezing agent, a film-forming aid, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, organic modified silica sol and a polyurethane thickener, and stirring for 5-10min to obtain the modified silicone rubber.
Compared with the prior art, the invention has the following beneficial effects:
the invention has the beneficial effects that: the product is free from artificial addition of preservatives, low in odor and VOC, water-based, environment-friendly and safe, low in macromolecular organic matter content, excellent in fireproof performance and excellent in stain resistance, scrubbing resistance and weather resistance, the defects of early rain marks, saltpetering and the like in construction are obviously improved, and the adaptability of the product to early environment is obviously improved. Therefore, the method has great significance in practical application.
Detailed Description
The present invention will be further described with reference to examples.
Example 1
A production sample 1 of the high-performance inorganic exterior wall coating and the preparation method is prepared from the following components in parts by weight:
the preparation method of the high-performance inorganic exterior wall coating comprises the following steps:
(1) firstly, adding water into a dispersion cylinder, sequentially adding hydroxyethyl cellulose and attapulgite at the rotating speed of 3000r/min, then stirring for 1min at the rotating speed of 600r/min, then adding a defoaming agent, a dispersing agent, a wetting agent and an adhesion promoter, and continuously stirring for 3 min;
(2) then adding titanium dioxide, mica powder, heavy calcium carbonate and calcined kaolin, stirring to a uniform state, scraping the powder on the wall of the cylinder, adjusting the rotating speed to 1200r/min, and stirring for 15min until the fineness is less than or equal to 50 microns;
(3) and then adjusting the rotating speed to 800r/min, sequentially adding an antifreezing agent, a film-forming aid, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, organic modified silica sol and a polyurethane thickener, and stirring for 5min to obtain the modified silicone rubber.
Example 2
A production sample 2 of the high-performance inorganic exterior wall coating and the preparation method is prepared from the following components in parts by weight:
the preparation method of the high-performance inorganic exterior wall coating comprises the following steps:
(1) firstly, adding water into a dispersion cylinder, then adding hydroxyethyl cellulose and attapulgite at the rotating speed of 500r/min, then increasing the rotating speed to 800r/min, stirring for 3min, then adding a defoaming agent, a dispersing agent, a wetting agent and an adhesion promoter, and continuously stirring for 5 min;
(2) then adding titanium dioxide, mica powder, heavy calcium carbonate and calcined kaolin, stirring to a uniform state, scraping the powder on the wall of the cylinder, adjusting the rotating speed to 1500r/min, and stirring for 20min until the fineness is less than or equal to 50 microns;
(3) and then adjusting the rotating speed to 1000r/min, sequentially adding an antifreezing agent, a film-forming aid, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, organic modified silica sol and a polyurethane thickener, and stirring for 10min to obtain the modified silicone rubber.
Example 3
A production sample 3 of the high-performance inorganic exterior wall coating and the preparation method is prepared from the following components in parts by weight:
the preparation method of the high-performance inorganic exterior wall coating comprises the following steps:
(1) firstly, adding water into a dispersion cylinder, then adding hydroxyethyl cellulose and attapulgite at the rotating speed of 400r/min, then increasing the rotating speed to 700r/min, stirring for 2min, then adding a defoaming agent, a dispersing agent, a wetting agent and an adhesion promoter, and continuously stirring for 4 min;
(2) then adding titanium dioxide, mica powder, heavy calcium carbonate and calcined kaolin, stirring to a uniform state, scraping the powder on the wall of the cylinder, adjusting the rotating speed to 1300r/min, and stirring for 15-20 min until the fineness is less than or equal to 50 microns;
(3) and then adjusting the rotating speed to 900r/min, sequentially adding an antifreezing agent, a film-forming aid, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, organic modified silica sol and a polyurethane thickener, and stirring for 8min to obtain the modified silicone rubber.
The water described in the above examples is ordinary tap water.
The hydroxyethyl cellulose is nonionic soluble cellulose ether, and adopts hydroxyethyl cellulose HS30000YP2 of Craine.
The attapulgite is AMI
400。
The antifoaming agent is prepared by mixing 334 of Corning and 2410 of BASF (ratio of 1: 1).
The dispersant is used by matching 731A of DOW and SN5040 of Santanoploaceae (ratio is 15:2), and is sodium salt dispersant.
The wetting agent was BD109 DOW.
The adhesion promoter is RA-11 of Kangyu chemical industry.
The titanium dioxide is R216 of Zhonghuayuan.
The mica powder is Chuzhou geli GM-900.
The heavy calcium carbonate is 1083 by sannong.
The calcined kaolin is super-brand DG-80.
The antifreeze is Polyglykol 300 from clariant.
The film-forming assistant is DOW DPnB.
The styrene-acrylic emulsion is RS837A of BATF.
The silane modified potassium silicate is MOS-1060 of Xiamen rattan materials science and technology limited. The silane modified potassium silicate has high silicon dioxide content, solid content of 25 percent, density of 1.18g/ml and PH of 11-12, adopts stabilization treatment and has high product tolerance. Provides excellent binding force of concrete or cement putty base materials and inorganic performance (fire resistance, air permeability and weather resistance) of the coating.
The high-molecular modified potassium silicate is Z19 of New Yuan-New-Material-technology Limited company, is a high-molecular material of organic-inorganic hybrid polymerization, has a solid content of 20%, a density of 1.45g/ml and a pH of 12-13, can form a complementary network with the raw materials in the coating, and improves the properties of the coating, such as compactness, strength, interface wetting and the like.
The polymer modified silica sol is 6112 of Shanghai new marine material science and technology company, and is a nano-scale organic-inorganic hybrid polymerized polymer material, the solid content of the polymer modified silica sol is 30%, the density of the polymer modified silica sol is 1.22g/ml, the PH of the polymer modified silica sol is between 8 and 10, the stability of a formula system is enhanced, the permeability of a coating to a porous base material is enhanced, and the stain resistance of the coating is improved.
The organic modified silica sol is SN108 of Sunno science and technology Co., Ltd, is an organic and inorganic hybrid polymerized high polymer material containing a small amount of lithium components, has the solid content of 22 percent, the density of 1.08g/ml and the PH of 9-11, can improve the drying speed of products, enhance the permeability of the coating to porous substrates and improve the stain resistance of the coating.
The polyurethane thickener is RM-8W of DOW.
The invention focuses on the early-stage alkali-resisting performance of the inorganic exterior wall coating, and is used for evaluating the adaptability of the product to the early-stage environment by combining with a practical setting related test scheme:
1) the experimental environment is as follows: the state regulation of the base material and the temperature and humidity of the experiment meet the regulation of GB/T928;
2) treating a base material, namely treating an asbestos-free fiber cement flat plate [430mm x 150mm x (4-6) mm ], according with the requirement of NAF H V grade in JC/T412.1-2006, and treating according to the regulation of 10.2 in GB/T9271-2008;
3) putty scraping: the first putty scraping is mainly used for filling up the depressions, air holes, sand holes and other defects of the wall surface, namely local leveling. And the putty is scraped for the second time at night mainly by integral leveling, and finally the requirement of flatness is met. Polishing once by using 320# abrasive paper at night, and then polishing for the second time by using 400# abrasive paper, wherein the trace of polishing the abrasive paper is eliminated as much as possible;
4) coating the exterior wall primer: rolling and coating once according to the coating rate requirement [ (100-125) g/m2], wherein the drying time is more than or equal to 2H;
5) inorganic exterior wall coating construction: brushing and constructing for one time according to the coating rate requirement [ (200-250) g/m2], and drying for 24H;
6) early stage water spraying experiment: after the inorganic exterior wall coating is constructed and dried for 24H, immediately spraying water for continuously being more than or equal to 16H, observing rain mark traces and whiskering conditions after air drying (placing for 8H), and evaluating the early performance of the product;
7) early stage soaking experiment: the sample plate after the early stage water spraying experiment is partially immersed in water for 96H, and after being taken out, the sample plate has the performance of resisting wet rubbing and powder falling on the non-immersed part and the immersed part; and (5) observing the degree of efflorescence at the joint of the non-soaked part and the soaked part after air drying (the placement is more than or equal to 16H), and evaluating the early performance of the product.
Table 1 shows the early anti-efflorescence test data of the inorganic exterior wall coating prepared by the present invention:
as shown in Table 1, the high-performance inorganic exterior wall coating prepared by the invention can obviously improve the defects of early rain marks, early flooding and efflorescence and the like, and can obviously improve the adaptability of the product to early environment. High performance inorganic exterior wall coating sample 1 is the best solution.
The samples of examples 1, 2 and 3 of the high-performance inorganic exterior wall coating prepared by the invention are subjected to full performance evaluation by referring to the technical indexes of JG/T26 liquid inorganic coating for interior and exterior walls of buildings and combining with the detection conditions of GB/T9755-2014 synthetic resin emulsion exterior wall coating.
TABLE 2 Key Performance data for high Performance inorganic exterior wall coating samples
As can be seen from Table 2, the high performance inorganic exterior wall coating sample prepared by the invention has excellent stain resistance and washing resistance, and other properties meet the design indexes.
The inorganic exterior wall coating produced by the method can further produce a series of functional inorganic exterior wall coatings for further opening and utilization.
The above embodiments are only some of the embodiments of the present invention, but the spirit of the present invention is not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (7)
1. A high-performance inorganic exterior wall coating is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight:
2. the high performance inorganic exterior wall coating of claim 1, wherein: the hydroxyethyl cellulose is nonionic soluble cellulose ether.
3. The high performance inorganic exterior wall coating of claim 1, wherein: the defoaming agent is one or any combination of more than two of a mineral oil defoaming agent and an organic silicon defoaming agent.
4. The high performance inorganic exterior wall coating of claim 1, wherein: the dispersant is a sodium polycarboxylate dispersant.
5. The high performance inorganic exterior wall coating of claim 1, wherein: the wetting agent is one or any combination of more than two of nonionic surfactants or anionic surfactants.
6. The high performance inorganic exterior wall coating of claim 1, wherein: the titanium dioxide is rutile type titanium dioxide.
7. A method for preparing the high-performance inorganic exterior wall coating material of any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:
(1) firstly, adding water into a dispersion cylinder, then adding hydroxyethyl cellulose and attapulgite at the rotating speed of 300-500 r/min, then increasing the rotating speed to 600-800 r/min, stirring for 1-3 min, then adding a defoaming agent, a dispersing agent, a wetting agent and an adhesion promoter, and continuously stirring for 3-5 min;
(2) then adding titanium dioxide, mica powder, heavy calcium carbonate and calcined kaolin, stirring to a uniform state, then adjusting the rotating speed to 1200-1500 r/min, and stirring for 15-20 min until the fineness is less than or equal to 50 microns;
(3) and then adjusting the rotating speed to 800-1000 r/min, then sequentially adding an antifreezing agent, a film-forming aid, a styrene-acrylic emulsion, silane modified potassium silicate, high-molecular modified silica sol, organic modified silica sol and a polyurethane thickener, and stirring for 5-10min to obtain the modified silicone rubber.
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Cited By (3)
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| CN113429814A (en) * | 2021-07-01 | 2021-09-24 | 德爱威（中国）有限公司 | Environment-friendly fireproof inorganic interior wall primer and preparation method thereof |
| CN113698804A (en) * | 2021-09-13 | 2021-11-26 | 沈阳先进涂层材料产业技术研究院有限公司 | Crack-resistant and water-resistant all-inorganic coating and preparation method thereof |
| CN116333591A (en) * | 2023-02-07 | 2023-06-27 | 雷索新材料(苏州)有限公司 | High-temperature flame-retardant insulating coating and preparation method thereof |
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| CN116333591A (en) * | 2023-02-07 | 2023-06-27 | 雷索新材料(苏州)有限公司 | High-temperature flame-retardant insulating coating and preparation method thereof |
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