CN107619626B - Water-based high-temperature-resistant high-humidity-resistant inorganic coating and preparation method thereof - Google Patents
Water-based high-temperature-resistant high-humidity-resistant inorganic coating and preparation method thereof Download PDFInfo
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Abstract
The invention provides a water-based high-temperature and high-humidity resistant inorganic coating and a preparation method thereof, wherein the water-based high-temperature and high-humidity resistant inorganic coating comprises the following raw material components in percentage by weight: 0.2-1% of cellulose; 10-20% of inorganic potassium silicate; 5-20% of inorganic silica sol; 10-20% of fluorocarbon emulsion; 1-5% of water-based cosolvent; 0.1 to 0.5 percent of water-based wetting agent; 0.5 to 1.5 percent of aqueous dispersant; 0.1 to 1.5 percent of water-based defoaming agent; 10-20% of pigment; 15-30% of filler; 1-2.5% of a film forming promoter; 0.1 to 0.5 percent of aqueous thickening agent; the balance of water. The water-based high-temperature and high-humidity resistant inorganic coating can be used for both bottom and surface, can be sprayed or brushed repeatedly, and has good polishing property and filling property, and adjustable fullness and gloss; the paint film has good alcohol resistance, and is not abnormal after being soaked in 75% ethanol water solution for 60 min; the paint film has excellent alkali resistance and acid resistance.
Description
Technical Field
The invention relates to the technical field of inorganic coatings, and particularly discloses a water-based high-temperature and high-humidity resistant inorganic coating and a preparation method thereof.
Background
The inorganic paint is used on the surface of inorganic silicate inner and outer walls, and can make the decoration of the inner and outer wall more beautiful and permanently chemically combine with the surface of mineral matter. The service life of the coating is 5-10 times that of a common organic coating, and is even longer. The outer wall coating is not influenced by the change of climate and humidity.
In the current Chinese architectural coating market, the occupancy rate of the water-based inorganic coating is less than 5 percent, which is far away from the market popularization rate of more than 90 percent in Europe and America. The amount of the Chinese architectural coating is large, and from the aspect of environmental protection, the inorganic coating has incomparable natural advantages compared with the organic coating.
The 'economy, high efficiency, energy conservation and ecology' form the basic principle commonly followed by the human development. In recent years, the general principle of sustainable development is proposed worldwide, which becomes a strong driving force for promoting and promoting the development of inorganic coatings. In fact, the development of inorganic coatings has been receiving widespread attention, and some countries in japan and europe have also proposed the idea of "coating inorganization". These would indicate that the inorganic coating has great development advantages and potential.
At present, the selected water-based resin and emulsion used under the high-temperature and high-humidity condition are few. And the quality is also uneven; the optional types of the auxiliary agents and the pigments and fillers for preparing the paint are not many. For the reasons, the performance of the water-based common coating is far from the performance of the solvent-based coating, and the water-based common coating is far inferior to the solvent-based coating of the same type in the aspects of drying time, hardness, fullness, water resistance, heat resistance, strong acid and alkali resistance and the like. This is determined by the nature of the aqueous system itself.
In the construction engineering of common organic high-temperature and high-humidity resistant paint, a base layer is polished, a primer is brushed for 1 time, and the organic high-temperature and high-humidity resistant paint is brushed for 1-2 times, so that two or more than two coatings are needed. The water-based high-temperature and high-humidity resistant inorganic coating has the advantages of both the primer and the finish, and can be directly molded on two sides, so that the cost is saved, and the production efficiency is improved.
Disclosure of Invention
The invention aims to overcome the existing defects and provides the water-based high-temperature and high-humidity resistant inorganic coating and the preparation method thereof, the water-based high-temperature and high-humidity resistant inorganic coating can be used for both bottom and surface, can be sprayed or brushed repeatedly, and has good polishing property and filling property, and adjustable fullness and luster; the paint film has excellent alcohol resistance and sulfuric acid resistance.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the water-based high-temperature and high-humidity resistant inorganic coating comprises the following raw material components in percentage by weight:
preferably, the cellulose is present in an amount of 0.3 to 0.7% by weight.
Preferably, the weight percentage of the inorganic potassium silicate is 11-14%.
Preferably, the weight percentage of the inorganic silica sol is 10-14%.
Preferably, the weight percentage of the fluorocarbon emulsion is 10-14%.
Preferably, the weight percentage of the aqueous cosolvent is 1.2-2%.
Preferably, the weight percentage of the aqueous wetting agent is 0.1-0.3%.
Preferably, the weight percentage of the aqueous dispersant is 0.8-1.3%.
Preferably, the weight percentage of the aqueous defoamer is 0.2-0.5%.
Preferably, the pigment is present in an amount of 16 to 18% by weight.
Preferably, the weight percentage of the filler is 20-25%.
Preferably, the weight percentage of the film forming promoter is 1.2-1.8%.
Preferably, the weight percentage of the aqueous thickener is 0.2-0.6%.
Preferably, the water is present in an amount of 15-35% by weight.
Preferably, the cellulose is hydroxyethyl cellulose or ethyl hydroxyethyl cellulose.
Preferably, the inorganic potassium silicate is present in a molar amount greater than 6.
Too high alkalinity of the solution of low-molar inorganic potassium silicate can destroy the stable structure of the inorganic silica sol, cause the inorganic silica sol to become gel or solid to be precipitated, and also destroy the pH value of the system, thereby causing the problems of powder removal, poor water resistance and the like. The invention adopts inorganic potassium silicate to meet the requirement that the high molar ratio is more than 6, and has low alkalinity and good water resistance.
Preferably, the particle size of the inorganic silica sol is less than 100nm, and SiO in the inorganic silica sol2The content is more than 30 percent.
More preferably, the inorganic silica sol is ocm or kohlant CB 102. The inorganic silica sol in the general market is prepared by using quartz sand as a raw material and carrying out a dissolution reaction by using strong alkali NaOH, and can generate Na with a large particle size of 100nm-1 mu m2The content of O is more than 1.0 percent, and the inorganic silica sol is easy to generate self-polymerization and has poor storage and compatibility. The invention adopts a silicon dissolving method to prepare inorganic silica sol, the silicon dissolving method takes inorganic or organic base as a catalyst, simple substance silicon reacts with pure water to prepare the silica sol, and the particle size of the silica sol is uniform and easy to control.
Preferably, the solid content of the fluorocarbon emulsion is 40-50%, and the fluorine content in the fluorocarbon emulsion is 10-14%.
Preferably, the aqueous cosolvent is ethylene glycol phenyl ether or pharmaceutical grade propylene glycol.
More preferably, the ethylene glycol phenyl ether is of type Dow EPH-6.
Preferably, the filler comprises one or more of barium sulfate, calcium carbonate, calcium silicate, mica powder and talc.
More preferably, the filler is prepared from barium sulfate, mica powder and talcum powder according to the weight ratio of (10-15): (4-6): (4-6).
Preferably, the water-based wetting agent is selected from any one or two of a silicone modified wetting agent and an acrylic modified wetting agent.
More preferably, the aqueous wetting agent is BD-109 or CF-10.
Preferably, the aqueous dispersant is a polyacrylic ammonium salt dispersant.
More preferably, the aqueous dispersant is of type Dow CA-2500 or Santa Nordisk 5027.
Preferably, the aqueous defoaming agent is selected from any one of organic silicon, mineral oil or polyether modified defoaming agent.
More preferably, the aqueous defoamer is selected from 2134, A10, SN-321C or SN-NXZ.
Preferably, the pigment is selected from any one of titanium dioxide, iron oxide red, iron oxide yellow and iron oxide black.
Preferably, the film forming accelerator is kosol 290.
Preferably, the aqueous thickener is selected from one or two of an associative polyurethane thickener and a hydroxyethyl cellulose thickener.
More preferably, the aqueous thickener is of type Xinyue HS30000, Shilan 250HBR, Dow RM-3030, or Idekco 450 VF.
The invention discloses a method for preparing the water-based high-temperature and high-humidity resistant inorganic coating, which comprises the following steps:
1) putting the water into a stirrer in advance, then adding the cellulose, the aqueous dispersing agent and the aqueous defoaming agent, and uniformly dispersing at a low speed;
2) adding the aqueous cosolvent and the aqueous wetting agent, and uniformly dispersing at a high speed;
3) adding the filler and the pigment, dispersing uniformly at a high speed, and filtering to obtain a slurry mixture semi-finished product;
4) under the condition of low speed, adding the inorganic potassium silicate, the inorganic silica sol and the fluorocarbon emulsion while stirring, slowly adding the film forming accelerant, then adding the aqueous thickening agent, and uniformly stirring to obtain the aqueous high temperature and high humidity resistant inorganic coating.
In conclusion, the invention provides a water-based high-temperature and high-humidity resistant inorganic coating and a preparation method thereof, and the water-based high-temperature and high-humidity resistant inorganic coating has the following beneficial effects:
the water-based high-temperature and high-humidity resistant inorganic coating can be used for both bottom and surface, can be sprayed or brushed repeatedly, and has good polishing property and filling property, and adjustable fullness and gloss; the paint film has good alcohol resistance, and is not abnormal after being soaked in 75% ethanol water solution for 60 min; the paint film is placed in a sulfuric acid aqueous solution with the mass concentration of 10% for 48 hours, and the coating has no bubble shedding and other abnormalities; the paint film is placed in NaOH aqueous solution with the mass concentration of 20% for 144h, and the coating has no bubble shedding and other abnormalities; the paint film is boiled in water at 100 ℃ for 24h, and the coating has no appearance such as bubble shedding and the like. The formaldehyde emission of the water-based high-temperature and high-humidity resistant inorganic coating obtained by the invention is lower than that of a common water-based coating, and the water-based high-temperature and high-humidity resistant inorganic coating prepared by the invention is sprayed on the base materials of the inner wall and the outer wall, meets the requirements of safety, environmental protection and energy conservation, is beneficial to human health, has high spraying efficiency and low cost, and is suitable for industrial production.
Detailed Description
The invention is further illustrated by the following examples. It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Table 1 shows the ratios of the raw material components in examples 1 to 8, and the contents of the raw material components in the table are in parts by weight.
TABLE 1 weight ratios of the raw material components in examples 1 to 8
Example 1
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 5 min;
2) adding 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), increasing the stirring speed to 1300r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of calcium silicate (1250 meshes), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 35min, and detecting fineness and cleanliness to obtain a semi-finished slurry mixture;
4) adjusting the rotating speed to 300r/min, sequentially adding 125kg of fluorocarbon emulsion (model DF01) and 125kg of inorganic silica sol while stirring, slowly adding 15kg of film forming accelerant (model OE300) and stirring for 12min, then adding 5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, finally adding 1.5kg of preservative (model LX300) and stirring uniformly to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
Example 2
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 5 min;
2) after 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109) are added, the stirring speed is increased to 1300r/min, and high-speed dispersion is carried out for 10 min;
3) adding 10kg of water, adding 170kg of titanium dioxide and 125kg of calcium carbonate (1250 meshes, Guangdong banana ridge), dispersing at a high speed for 5min, adding 50kg of talcum powder and 50kg of mica powder while stirring, dispersing at a high speed for 35min, and detecting fineness and cleanliness to obtain a semi-finished slurry mixture;
4) adjusting the rotating speed to 300r/min, sequentially adding 125kg of fluorocarbon emulsion (model DF01) and 125kg of inorganic potassium silicate (model G730) while stirring, then slowly adding 15kg of film forming accelerant (model OE300) and stirring for 10min, finally adding 5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, and finally adding 1.5kg of preservative (LX300) and stirring uniformly to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
Example 3
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 5 min;
2) adding 17.5kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), stirring at 1200r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of barium sulfate (1250 meshes), dispersing at high speed for 5min, then adding 50kg of talcum powder and 50kg of mica powder while stirring, dispersing at high speed for 30min, and detecting fineness and cleanliness to obtain a semi-finished product of the slurry mixture;
4) adjusting the rotating speed to 300r/min, adding 125kg of fluorocarbon emulsion (model DF01), 100kg of inorganic silica sol and 125kg of inorganic potassium silicate in sequence while stirring, then slowly adding 15kg of film forming accelerant (model OE300), stirring for 12min, finally adding 2.5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 40kg of water, and finally adding 1.5kg of preservative (model LX300), and uniformly stirring to obtain the aqueous high-temperature and high-humidity resistant inorganic coating.
Example 4
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 5 min;
2) after 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109) are added, the stirring speed is increased to 1300r/min, and high-speed dispersion is carried out for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of barium sulfate (1250 meshes), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 30min, and detecting fineness and cleanliness to obtain a semi-finished product of the slurry mixture;
4) adjusting the rotating speed to 300r/min, sequentially adding 125kg of styrene-acrylic emulsion (model RS-309) and 125kg of inorganic potassium silicate while stirring, slowly adding 15kg of film forming accelerant (model OE300) and stirring for 12min, then adding 5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, finally adding 1.5kg of preservative (model LX300) and stirring uniformly to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
Example 5
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 400r/min, mixing and dispersing for 6 min;
2) adding 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), stirring at 1200r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of calcium silicate (1250 meshes), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 30min, and detecting fineness and cleanliness to obtain a semi-finished product of the slurry mixture;
4) adjusting the rotating speed to 300r/min, sequentially adding 125kg of styrene-acrylic emulsion (model RS-309) and 125kg of inorganic silica sol while stirring, slowly adding 15kg of film forming accelerant (model OE300) and stirring for 10min, then adding aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, finally adding 1.5kg of preservative (model LX300) and stirring uniformly to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
Example 6
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 7 min;
2) adding 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), stirring at 1300r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of barium sulfate (1250 meshes), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 35min, and detecting fineness and cleanliness to obtain a semi-finished product of the slurry mixture;
4) adjusting the rotating speed to 300r/min, sequentially adding 125kg of acrylic emulsion (model RS-706) and 125kg of inorganic silica sol while stirring, slowly adding 15kg of film forming accelerant (model OE300), stirring for 12min, then adding 5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, finally adding 1.5kg of preservative (model LX300), and uniformly stirring to obtain the aqueous high-temperature-resistant high-humidity-resistant inorganic coating.
Example 7
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 7 min;
2) adding 15kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), stirring at 1300r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of calcium carbonate (1250 meshes, Guangdong banana ridge), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 25min, and detecting fineness and cleanliness to obtain a slurry mixture semi-finished product;
4) adjusting the rotating speed to 300r/min, adding 125kg of acrylic emulsion (model RS-706) and 125kg of inorganic potassium silicate while stirring, slowly adding 15kg of film forming accelerant (model OE300), stirring for 12min, then adding 5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 140kg of water, finally adding 1.5kg of preservative (model LX300), and uniformly stirring to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
Example 8
1) Adding 150kg water into a stirrer, adding 4kg hydroxyethyl cellulose (model 250HBR), 10kg aqueous dispersant (model CA2500) and 3kg aqueous defoaming agent (model BASF2134), adjusting stirring speed to 300r/min, mixing and dispersing for 6 min;
2) adding 17.5kg of aqueous cosolvent (EPH-6) and 1.5kg of aqueous wetting agent (model BD-109), stirring at 1200r/min, and dispersing at high speed for 10 min;
3) adding 10kg of water, then adding 170kg of titanium dioxide and 125kg of calcium silicate (1250 meshes), dispersing at a high speed for 5min, then adding 50kg of mica powder and 50kg of talcum powder while stirring, dispersing at a high speed for 25min, and detecting fineness and cleanliness to obtain a semi-finished product of the slurry mixture;
4) adjusting the rotating speed to 300r/min, adding 125kg of styrene-acrylic emulsion (model RS-706), 100kg of inorganic silica sol and 125kg of inorganic potassium silicate while stirring, slowly adding 15kg of film forming accelerant (model OE300), stirring for 12min, then adding 2.5kg of aqueous thickening agent (model 450VF) to adjust the viscosity, adding 40kg of water, finally adding 1.5kg of preservative (model LX300), and uniformly stirring to obtain the aqueous high-temperature-resistant high-humidity inorganic coating.
And (3) detection results:
the aqueous high-temperature-resistant high-humidity-resistant inorganic coatings in the embodiments 1 to 8 are tested according to a detection standard JG/T26-2002 inorganic building coating for exterior walls, the performance test results are shown in tables 2 and 3, and as can be seen from tables 2 and 3, the pH values of the aqueous high-temperature-resistant high-humidity-resistant inorganic coatings obtained in the embodiments 1 to 8 all meet the detection indexes; no abnormality occurred after a few delamination after 7 days of storage at 50 ℃.
The water-based high-temperature and high-humidity resistant inorganic coatings in the embodiments 1 to 8 meet the detection indexes in the aspects of solid content and adhesive force; the paint film has good alcohol resistance, and is not abnormal after being soaked in 75% ethanol water solution for 60 min; freeze-thaw stability three cycles were not abnormal. In the aspect of water boiling resistance, the coating added with fluorocarbon is obviously better than styrene-acrylic or acrylic coating.
It is apparent from tables 2 and 3 that the inorganic coating materials of examples 1 to 8 are satisfactory in terms of alkali resistance. In the project of sulfuric acid resistance, the inorganic resin is preferably sequentially fluorocarbon, acrylic acid and styrene-acrylic acid, and the filler is preferably sequentially barium sulfate, calcium silicate and calcium carbonate.
The aqueous high temperature and high humidity resistant inorganic coatings of examples 1 to 8 obtained lower formaldehyde emission than the general aqueous coating, lower formaldehyde emission and even ND (Not detected, abbreviated as translation Not detected).
The inorganic resin is selected from a formula system combining fluorocarbon, inorganic silica sol and inorganic potassium silicate, and the chemical resistance of the inorganic resin is more excellent.
Table 2 results of technical performance tests of the aqueous inorganic high temperature and high humidity resistant inorganic coating products of examples 1 to 4:
TABLE 3 technical Performance test results for aqueous inorganic high temperature and high humidity resistant inorganic coating products of examples 5 to 8
The preparation of the water-based inorganic high-temperature and high-humidity resistant inorganic coating with different colors by selecting pigments with other colors belongs to the protection scope of the invention, and the preparation is not listed.
The water-based high-temperature-resistant high-humidity inorganic coating can be used in the field of engineering interior and exterior walls, and can be sprayed on an engineering interior wall base material to replace a primer and a finish paint which are sprayed in sequence in the prior art, and the performance is more excellent. The water-based high-temperature and high-humidity resistant inorganic coating realizes the general use of the bottom and the surface of the coating of the inner and outer walls, can be repeatedly sprayed or brushed, has good polishing property and filling property, and can adjust the fullness. The water-based high-temperature and high-humidity resistant inorganic coating is used for fresh cement and aged cement wall surfaces, can be directly constructed and is far higher than the weather resistance of organic outer walls.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (6)
1. The water-based high-temperature and high-humidity resistant inorganic coating is characterized by comprising the following components in percentage by weight: comprises the following raw material components in percentage by weight:
the molar ratio of the inorganic potassium silicate is more than 6, the solid content of the fluorocarbon emulsion is 40-50%, the fluorine content of the fluorocarbon emulsion is 10-14%, and the filler is prepared from barium sulfate, mica powder and talcum powder according to the weight ratio of (10-15): (4-6): (4-6), wherein the type of the fluorocarbon emulsion is DF01, the type of the inorganic silica sol is Orun or Kerui European CB102, the type of the inorganic potassium silicate is G730, the mesh number of the barium sulfate is 1250 meshes, the mesh number of the mica powder is 800 meshes, and the mesh number of the talcum powder is 1250 meshes.
2. The aqueous high temperature and high humidity resistant inorganic coating material according to claim 1, wherein: the cellulose is hydroxyethyl cellulose or ethyl hydroxyethyl cellulose.
3. The aqueous high temperature and high humidity resistant inorganic coating material according to claim 1, wherein: the water-based wetting agent is selected from any one or two of an organic silicon modified wetting agent and an acrylic acid modified wetting agent;
and/or the aqueous thickening agent is selected from one or two of associative polyurethane thickening agents and hydroxyethyl cellulose thickening agents;
and/or the aqueous dispersant is a polyacrylic ammonium salt dispersant.
4. The aqueous high temperature and high humidity resistant inorganic coating material according to claim 1, wherein: the water-based defoaming agent is any one of organic silicon, mineral oil or polyether modified defoaming agent.
5. The aqueous high temperature and high humidity resistant inorganic coating material according to claim 1, wherein: the pigment is selected from any one of titanium dioxide, iron oxide red, iron oxide yellow and iron oxide black.
6. A method for preparing the aqueous high temperature and high humidity resistant inorganic coating material according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
1) putting the water into a stirrer in advance, then adding the cellulose, the aqueous dispersing agent and the aqueous defoaming agent, and uniformly dispersing at a low speed;
2) adding the aqueous cosolvent and the aqueous wetting agent, and uniformly dispersing at a high speed;
3) adding the filler and the pigment, dispersing uniformly at a high speed, and filtering to obtain a slurry mixture semi-finished product;
4) under the condition of low speed, adding the inorganic potassium silicate, the inorganic silica sol and the fluorocarbon emulsion while stirring, slowly adding the film forming accelerant, then adding the aqueous thickening agent, and uniformly stirring to obtain the aqueous high temperature and high humidity resistant inorganic coating.
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| CN102408220A (en) * | 2011-08-08 | 2012-04-11 | 华南理工大学 | All-in-one water-borne inorganic-organic hybrid architectural coating and preparation method thereof |
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| CN107619626A (en) | 2018-01-23 |
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