CN114350220A - Super-waterproof colorful coating and preparation method thereof - Google Patents
Super-waterproof colorful coating and preparation method thereof Download PDFInfo
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Abstract
The application relates to the field of coatings, and particularly discloses a super-waterproof colorful coating and a preparation method thereof; a super-waterproof colorful paint comprises a component A, a component B and a component C; the component A is prepared from the following raw materials in parts by weight: water, cellulose ether, a dispersing agent, a defoaming agent, an antifreezing agent, a film forming auxiliary agent, a bactericide, a filler, a pH regulator, an emulsion, a wetting agent, a protective glue solution and snowflake white; the component B is prepared from the following raw materials in parts by weight: water, magnesium lithium silicate protective glue; the component C is prepared from the following raw materials in parts by weight: water, ethylene glycol, an alkali swelling thickener, a defoaming agent, a pH regulator, a film-forming aid, a bactericide, a silicone-acrylic emulsion and hydrophobically modified cellulose ether; the preparation method comprises the following steps: weighing the component B and the component C, mixing and stirring, adding the component A, continuously stirring and mixing to obtain a finished product; the water-based multicolor paint has the advantages of good water resistance and good stability, thereby improving the product quality and the production efficiency of enterprises.
Description
Technical Field
The application relates to the field of coatings, in particular to a super-waterproof colorful coating and a preparation method thereof.
Background
At present, the water-based multicolor paint is a field in which the development of the paint industry is faster in China, has outstanding advantages in replacing the aspect of dry-hanging marble, can reach 95 percent of similarity in the aspect of stone imitation, has the cost of only about 20 percent of dry-hanging stone, has no harsh construction requirements on dry-hanging stone, and has low falling risk.
The water-based multicolor paint is generally divided into a reactive system and an alkali swelling thickening system, the water-based multicolor paint of the reactive system has a certain water resistance, but the stability is poor, and the water-based multicolor paint can be packaged and delivered after being stored for 24 hours after the preparation is finished and the viscosity is stable, so that the low production efficiency is easily caused; although the aqueous multicolor paint of the alkali swelling thickening system has better stability and better controlled viscosity, the water resistance of the aqueous multicolor paint is poor.
Therefore, it is urgently needed to prepare the water-based multicolor paint, so that the water-based multicolor paint has the advantages of good water resistance and good stability, and the product quality and the production efficiency of enterprises are improved.
Disclosure of Invention
In order to prepare the water-based multicolor paint, the water-based multicolor paint has the advantages of good water resistance and good stability, so that the product quality and the production efficiency of enterprises are improved, and the application provides the super-water-resistant multicolor paint and the preparation method thereof.
In a first aspect, the application provides a super-waterproof multicolor paint, which adopts the following technical scheme:
the super-waterproof colorful coating comprises a component A, a component B and a component C; wherein the mass ratio of the component A to the component B to the component C is 40-60:20: 20-40;
the component A is prepared from the following raw materials in parts by weight: 50-65 parts of water, 1.0-1.5 parts of cellulose ether, 0.2-0.5 part of dispersant, 0.5-1.0 part of defoamer, 1.0-1.5 parts of antifreeze, 1.0-1.5 parts of film-forming additive, 0.5-1.0 part of bactericide, 5.0-10 parts of filler, 0.1-0.3 part of pH regulator, 20-35 parts of emulsion, 0.05-0.2 part of wetting agent, 5-7 parts of protective adhesive solution and 20-60 parts of snowflake white;
the component B is prepared from the following raw materials in parts by weight: 94-96 parts of water and 4-10 parts of magnesium lithium silicate protective adhesive;
the component C is prepared from the following raw materials in parts by weight: 20-30 parts of water, 2-3 parts of ethylene glycol, 0.4-0.6 part of alkali swelling thickener, 0.2-0.4 part of defoamer, 0.1-0.2 part of pH regulator, 2-3 parts of film-forming assistant, 0.3-0.5 part of bactericide, 50-80 parts of silicone-acrylic emulsion and 0.1-0.2 part of hydrophobic modified cellulose ether.
By adopting the technical scheme, the magnesium lithium silicate protective glue and the hydrophobically modified cellulose ether are matched, and the negative charge of the magnesium lithium silicate is utilized to form hydrogen bond connection with hydroxyl on the surface of cellulose, so that the cross-linking of the cellulose is promoted, and the cellulose forms a network connection structure; the support structure of the polymer framework in the network connection structure is matched with the hydrophobic dispersion effect of the hydrophobic groups, so that the finished coating has good water resistance.
Cellulose, protective glue solution and filler in the component A are matched with magnesium lithium silicate protective glue in the component B and alkali swelling thickener, film forming aid and hydrophobic modified cellulose ether in the component C, and a network connection structure formed by the film forming material, the water-based adhesive action, the magnesium lithium silicate protective glue and the hydrophobic modified cellulose ether is utilized, so that not only can component precipitation be avoided, but also the influence of a cosolvent on the hydrophobic modified cellulose ether can be avoided, and the stability of the finished coating is improved.
Therefore, the component A, the component B and the component C are matched, and the cellulose and the thickening agent are dissolved and then mixed, so that the viscosity of the coating is stable after the mixing is finished, and the coating can be packaged and delivered immediately; after the component A, the component B and the component C are mixed, a crosslinking reaction occurs, so that the finished coating has good water resistance; the prepared finished coating has the advantages of good water resistance and good stability, so that the product quality and the production efficiency of enterprises are improved.
Preferably, the component A is prepared by the following method:
adding water, cellulose ether, a dispersing agent, a defoaming agent, an antifreezing agent, a film forming aid, a bactericide, a filler and a pH regulator into a dispersion cylinder, dispersing the system to the fineness of less than 40um at the rotating speed of 800-1200 rpm, adding an emulsion, a wetting agent, a protective glue solution and snowflake white, and uniformly stirring at the rotating speed of 300-1000 rpm to obtain the component A.
By adopting the technical scheme, the raw materials of the substances in the component A are uniformly dispersed, and when the raw materials are contacted with the magnesium lithium silicate protective glue in the component B and the hydrophobically modified cellulose ether in the component C, the raw materials are convenient to uniformly mix, so that the water resistance of the finished coating is improved, and the stability of the finished coating is improved.
Preferably, the component B is prepared by the following method:
adding water and lithium magnesium silicate protective adhesive into the dispersion cylinder, and uniformly stirring to obtain the component B.
By adopting the technical scheme, the raw materials of the components B are uniformly dispersed, and when the components B are mixed with the components C, the components B and the hydrophobic modified cellulose ether in the components C are convenient to form a network connection structure, so that the raw materials in the finished paint are prevented from being aggregated by utilizing the hydrophobic effect of the network connection structure, a good anti-precipitation effect is achieved, and the finished paint has good stability.
Preferably, the component C is prepared by the following method:
adding water, silicone-acrylic emulsion, film forming additive, glycol, bactericide, alkali swelling thickener and hydrophobically modified cellulose ether into a dispersion cylinder, stirring and mixing uniformly, then adding defoamer and pH regulator, and mixing uniformly to obtain component C.
By adopting the technical scheme, the raw materials of the component C are uniformly dispersed, so that the hydrophobic modified cellulose ether is conveniently contacted with the raw materials in the component A and the raw materials in the component B, the formation of a network connection structure is further promoted, and the finished coating is ensured to have better water resistance and stability.
Preferably, the filler in the component A is intercalation modified kaolin.
By adopting the technical scheme, after the kaolin is subjected to intercalation treatment, the intercalation substances are loaded among the layered structures, so that the surface area of the kaolin is further improved, not only can the dispersion of color paste be further promoted, but also the density of a paint film can be further improved, and the water resistance and the mechanical property of the paint film are improved.
Preferably, the intercalation modified kaolin adopts benzamide to carry out intercalation modification treatment.
By adopting the technical scheme, the benzamide is loaded in the kaolin lamellar structure, the benzamide, the kaolin, the magnesium silicate lithium protective adhesive and the hydrophobically modified cellulose ether are matched, the magnesium silicate lithium protective adhesive and the hydrophobically modified cellulose ether form a network connection structure, the magnesium silicate lithium is dispersed on the surface of a framework of the network connection structure, and the benzamide is loaded on the surfaces of the magnesium silicate lithium protective adhesive and the hydrophobically modified cellulose ether by utilizing the attraction of an amide group of the benzamide and a magnesium silicate lithium negative ion, so that the benzamide is loaded on the surfaces of the magnesium silicate lithium protective adhesive and the hydrophobically modified cellulose ether, the intercalation modified kaolin is loaded on the surface of the network connection structure, the surface area of the network connection structure is further increased, the hydrophobic effect can be further improved, the internal binding force of the coating can be improved, the coating is effectively prevented from being precipitated, and the stability of the coating is further improved.
After color paste prepared from the water-soluble colorful paint is added into the super-waterproof colorful paint, the hydrophobic effect of the network connection structure is utilized to match with the dispersion effect of the intercalated modified kaolin, so that the color paste can be uniformly dispersed and flowed in the intercalated structure, and the hydrophobic effect is matched to further improve the uniform dispersion degree and uniform dispersion effect of the color paste, so that the colorful paint has good color uniformity and the product quality is improved.
When the coating is in a rainy period, the color paste is matched with the hydrophobic protection effect of the network connection structure under the adsorption effect of the kaolin, so that the connection force between the color paste and the network connection structure is improved while the color paste is prevented from contacting with moisture, and the problem that the color paste fades after being sprayed due to the influence of rainwater is avoided as much as possible.
Preferably, the dispersant in the component A is polyacrylamide.
By adopting the technical scheme, polyacrylamide, magnesium silicate lithium protective adhesive and hydrophobic modified cellulose ether are matched, and carbonyl and amino groups in polyacrylamide are matched with magnesium silicate lithium to form hydrogen bonds, so that the polyacrylamide serving as a dispersing agent is attached to the surface of a network connection structure formed by the magnesium silicate lithium protective adhesive and the hydrophobic modified cellulose ether, and the intercalation modified kaolin on the surface is matched to further promote the dispersion of color paste, further improve the internal binding force of the coating, prevent precipitation, improve the storage stability of the coating and improve the hydrophobic effect of the coating.
Preferably, the hydrophobically modified cellulose ether in the component C is hydrophobically modified hydroxyethyl cellulose ether.
By adopting the technical scheme, the network connection structure is conveniently formed with the magnesium lithium silicate, so that the hydrophobicity of the network connection structure is further improved, the finished coating has better hydrophobicity and stability, and the product quality and the production and processing efficiency of enterprises can be ensured.
In a second aspect, the application provides a preparation method of a super-waterproof multicolor paint, which adopts the following technical scheme: a preparation method of a super-waterproof multicolor paint comprises the following steps:
weighing the component B and the component C, mixing and stirring, adding the component A, continuously stirring and mixing to obtain a finished product.
By adopting the technical scheme, firstly, the component B and the component C are mixed, so that the magnesium lithium silicate protective adhesive and the hydrophobic modified cellulose ether are subjected to a cross-linking reaction to form a network connection structure, then the component A is added, so that the filler, the dispersant, the bactericide and other substances in the component A are uniformly contacted with the network connection structure, and the water resistance of the finished coating is improved while the raw materials are uniformly dispersed; and the paint has better anti-settling effect by matching with substances such as film forming auxiliary agents, thickening agents, solvents and the like, so that the stability of the finished paint is improved, and the finished paint has better product quality and higher production efficiency.
In summary, the present application has the following beneficial effects:
1. the magnesium lithium silicate protective glue and the hydrophobically modified cellulose ether are matched, and the negative charge of the magnesium lithium silicate is utilized to form hydrogen bond connection with hydroxyl on the surface of cellulose, so as to promote the cross-linking of the cellulose, thereby forming a network connection structure; the support structure of the polymer framework in the network connection structure is matched with the hydrophobic dispersion effect of the hydrophobic groups, so that the finished coating has good water resistance.
2. Cellulose ether, protective glue solution and filler in the component A are matched with magnesium lithium silicate protective glue in the component B and alkali swelling thickener, film forming aid and hydrophobic modified cellulose ether in the component C, and a network connection structure formed by a film forming material and a water-based bonding effect matched with the magnesium lithium silicate protective glue and the hydrophobic modified cellulose ether is utilized, so that not only can component precipitation be avoided, but also the influence of a cosolvent on the hydrophobic modified cellulose ether can be avoided, and the stability of a finished coating is improved.
3. Firstly, mixing the component B and the component C, enabling the lithium magnesium silicate protective adhesive and the hydrophobic modified cellulose ether to generate a cross-linking reaction to form a network connection structure, then adding the component A, enabling the filler, the dispersant, the bactericide and other substances in the component A to be in uniform contact with the network connection structure, ensuring that all raw materials are uniformly dispersed, and improving the water resistance of the finished coating; and the paint has better anti-settling effect by matching with substances such as film-forming auxiliary agents, thickening agents, solvents and the like, effectively avoids the influence of cosolvent on the associative thickener, and ensures that the finished product has better stability; thereby the finished product has better product quality and higher production efficiency.
4. Benzamide, kaolin, magnesium lithium silicate protection glue, hydrophobic modified cellulose ether cooperatees, utilize the amide of benzamide and the attraction of magnesium lithium silicate anion, make the benzamide load on magnesium lithium silicate protection glue and hydrophobic modified cellulose ether surface, thereby make intercalation modified kaolin load on network connection structure surface, its network connection structure's surface area is further increased, not only can further improve hydrophobic effect, and can improve the inside cohesion of coating, thereby effectually prevent that the coating from deposiing, further improve the stability of coating.
Drawings
FIG. 1 is a water tolerance test chart of example 1 of the present application;
FIG. 2 is a water resistance test chart of comparative example 2 of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples.
Preparation example of intercalation modified Kaolin
The absolute ethyl alcohol in the following raw materials is purchased from absolute ethyl alcohol produced by Jinjunteng chemical industry Co., Ltd, and the purity is 99.9%; benzamide was purchased from far-tech limited, fuxin, wuhan; kaolin is purchased from Yuzhu mineral products, Inc., Lingshu county, with a particle size of 200 meshes; other raw materials and equipment are all sold in the market.
Preparation example 1: the intercalation modified kaolin is prepared by the following method:
adding benzamide into absolute ethyl alcohol for dissolving to prepare a benzamide solution with the mass fraction of 5%, placing kaolin in a grinder for grinding until the fineness is 20 mu m, then placing 100g of kaolin in 200g of benzamide solution, performing ultrasonic dispersion for 20min under the condition of 20kHz, and obtaining the intercalation modified kaolin after the absolute ethyl alcohol is volatilized.
Preparation example of A Components
The coating bactericide 410 of the following raw materials was purchased from Zizhuang Shibang Biotech Co., Ltd; the pH regulator is purchased from HY-95 multifunctional auxiliary agent produced by Beijing Maier chemical engineering Co., Ltd; polyacrylamide was purchased from Shandong Chengda chemical Co., Ltd; the waterborne multicolor protective adhesive is purchased from Laponite S482 waterborne multicolor coating protective adhesive produced by Germany byk company; other raw materials and equipment are all sold in the market.
Preparation example 2: the component A is prepared by the following method:
weighing 550g of water, 13g of cellulose ether, 2g of dispersing agent, 5g of defoaming agent, 10g of antifreezing agent, 10g of film-forming aid, 5g of bactericide, 70g of filler and 1g of pH regulator, adding the materials into a dispersion cylinder, dispersing the system to the fineness of 30um at the rotating speed of 1000rpm, adding 280g of emulsion, 1g of wetting agent, 65g of protective glue solution and 300g of snow white, and uniformly stirring at the rotating speed of 500rpm to obtain a component A;
the cellulose ether is carboxymethyl cellulose ether; the dispersant is polyacrylamide; the defoaming agent is mineral oil; the antifreezing agent is propylene glycol; the film-forming additive is alcohol ester twelve; the bactericide is paint bactericide 410; the filler is kaolin; the emulsion is pure acrylic emulsion; the wetting agent is polyethylene glycol 600; the protective glue solution is 5% of lithium magnesium silicate protective glue solution by mass fraction.
Preparation example 3: the difference between the preparation example and the preparation example 2 is that:
weighing 500g of water, 10g of cellulose ether, 2g of dispersing agent, 5g of defoaming agent, 10g of antifreezing agent, 10g of film-forming aid, 5g of bactericide, 50g of filler and 1g of pH regulator, adding the materials into a dispersion cylinder, dispersing the system to the fineness of 30um at the rotating speed of 800rpm, adding 200g of emulsion, 0.5g of wetting agent, 50g of protective glue solution and 200g of snow white, and uniformly stirring at the rotating speed of 300rpm to obtain the component A.
Preparation example 4: the difference between the preparation example and the preparation example 2 is that:
weighing 650g of water, 15g of cellulose ether, 5g of dispersing agent, 10g of defoaming agent, 15g of antifreezing agent, 15g of film-forming aid, 10g of bactericide, 100g of filler and 3g of pH regulator, adding the mixture into a dispersion cylinder, dispersing the system to the fineness of 35um at the rotating speed of 1200rpm, adding 350g of emulsion, 2g of wetting agent, 70g of protective glue solution and 600g of snow white, and uniformly stirring at the rotating speed of 1000rpm to obtain the component A.
Preparation example 5: the difference between the preparation example and the preparation example 2 is that:
the intercalation modified kaolin prepared in preparation example 1 was used as the kaolin.
Preparation of component B
The magnesium silicate lithium protective adhesive in the following raw materials is purchased from Guangdong Yongfeng chemical Limited company with the model YF-RD; other raw materials and equipment are all sold in the market.
Preparation example 6: the component B is prepared by the following method:
adding 950g of water and 50g of lithium magnesium silicate protective glue into a dispersion cylinder, stirring at the rotating speed of 1200rpm for 120min to obtain a component B.
Preparation example 7: the component B is prepared by the following method:
940g of water and 60g of lithium magnesium silicate protective glue are added into the dispersion cylinder, and the mixture is stirred at the rotating speed of 1000rpm for 120min to obtain the component B.
Preparation example 8: the component B is prepared by the following method:
adding 960g of water and 100g of lithium magnesium silicate protective glue into a dispersion cylinder, stirring at the rotating speed of 1200rpm for 120min to obtain a component B.
Preparation example of C component
The hydrophobically modified hydroxyethyl cellulose ethers of the following raw materials were purchased from hydrophobically modified hydroxyethyl cellulose manufactured by ashland, usa, model Natrosol plus 330; the alkali swelling thickener was purchased from Qinhua, Inc., Guangzhou, model ASE-60; the silicone-acrylic emulsion is purchased from Guangzhou, loyal high chemical Co., Ltd; the pH regulator is purchased from HY-95 multifunctional auxiliary agent produced by Beijing Maier chemical engineering Co., Ltd; other raw materials and equipment are all sold in the market.
Preparation example 9: the component C is prepared by the following method:
weighing 300g of water, 30g of ethylene glycol, 4.5g of alkali swelling thickener, 2g of defoamer, 2g of pH regulator, 30g of film-forming aid, 3g of bactericide, 600g of silicone-acrylic emulsion and 1.5g of hydrophobically modified cellulose ether, adding into a dispersion cylinder, stirring at 1200rpm for 20min, and uniformly mixing to obtain a component C; the defoaming agent is mineral oil; the film-forming additive is alcohol ester twelve; the bactericide is paint bactericide 410; the hydrophobically modified cellulose ether is hydrophobically modified hydroxyethyl cellulose ether.
Preparation example 10: the difference between the present preparation example and preparation example 9 is that:
weighing 300g of water, 30g of ethylene glycol, 4.5g of alkali swelling thickener, 2g of defoamer, 2g of pH regulator, 30g of film-forming aid, 3g of bactericide, 600g of silicone-acrylic emulsion and 1g of hydrophobically modified hydroxyethyl cellulose ether, adding into a dispersion cylinder, stirring at 1200rpm for 20min, and uniformly mixing to obtain the component C.
Preparation example 11: the difference between the present preparation example and preparation example 9 is that:
weighing 200g of water, 20g of ethylene glycol, 4g of alkali swelling thickener, 2g of defoamer, 1g of pH regulator, 20g of film-forming aid, 3g of bactericide, 500g of silicone-acrylic emulsion and 2g of hydrophobically modified hydroxyethyl cellulose ether, adding into a dispersion tank, stirring at 1200rpm for 20min, and uniformly mixing to obtain the component C.
Examples
Example 1: a super-waterproof multicolor paint:
60kg of the A component prepared in preparation example 2, 20kg of the B component prepared in preparation example 6, and 20kg of the C component prepared in preparation example 9; the preparation method comprises the following steps:
weighing the component B and the component C, mixing and stirring uniformly, adding the component A, continuously stirring and mixing uniformly, and obtaining a finished product.
Example 2: the present embodiment is different from embodiment 1 in that:
the component A is prepared from the component A prepared in the preparation example 3; the component B is prepared in preparation example 7; the component C is prepared from the component C prepared in the preparation example 10.
Example 3: the present embodiment is different from embodiment 1 in that:
the component A is prepared in preparation example 4; the component B is prepared from the component B prepared in the preparation example 8; the component C prepared in preparation example 11 was used as the component C.
Example 4: the present embodiment is different from embodiment 1 in that:
the component A prepared in preparation example 5 is selected as the component A.
Example 5: this embodiment is different from embodiment 4 in that:
in the preparation process of the intercalation modified kaolin, adding benzamide into absolute ethyl alcohol for dissolving to prepare a benzamide solution with the mass fraction of 5%, grinding the kaolin in a grinding machine until the fineness is 20 mu m, then placing the kaolin in the benzamide solution, stirring and mixing for 20min at the rotating speed of 300r/min, and after the absolute ethyl alcohol is volatilized, preparing the intercalation modified kaolin.
Example 6: this embodiment is different from embodiment 4 in that:
during the preparation process of the intercalation modified kaolin, adding benzamide into absolute ethyl alcohol for dissolving to prepare a benzamide solution with the mass fraction of 5%, placing the kaolin into the benzamide solution, performing ultrasonic dispersion for 20min under the condition of 20kHz, and after the volatilization of the absolute ethyl alcohol is finished, preparing the intercalation modified kaolin.
Example 7: this embodiment is different from embodiment 4 in that:
the bentonite with the same mass is used for replacing the intercalation modified kaolin in the raw materials.
Example 8: the present embodiment is different from embodiment 1 in that:
the dispersant is high-efficiency dispersant HT-5040; the high efficiency dispersant HT-5040 was purchased from break Tai chemical Co., Ltd, Nantong.
Comparative example
Comparative example 1: the present embodiment is different from embodiment 1 in that:
the component A is prepared by replacing the filler with snowflake white with the same mass.
Comparative example 2: the present embodiment is different from embodiment 1 in that:
and the hydrophobic modified cellulose ether is replaced by the same mass of sodium bentonite in the component C raw material.
Comparative example 3: the present embodiment is different from embodiment 1 in that:
directly mixing and stirring the component A, the component B and the component C to obtain a finished product.
Performance test
1. Water resistance detection
The preparation methods of examples 1-8 and comparative examples 1-3 are respectively adopted to prepare finished coatings, reference is made to GB/T1733-93 paint film water resistance measurement method, the test plate is inspected after being soaked for 5d and 15d, whether the test plate has the phenomena of whitening, foaming, wrinkling, falling off, rusting and the like is recorded, the test plate is graded according to the severity degree, each item is graded by 10 points, the test plate is graded according to the severity degree, and finally the total score is recorded.
2. Freeze-thaw stability testing
Respectively preparing the finished coating by adopting the preparation methods of the examples 1-8 and the comparative examples 1-3, and measuring the viscosity of the finished coating by adopting a stormer viscometer after the preparation of the finished coating is finished, and recording the measured viscosity as an initial viscosity value; then, referring to a method A in GB/T9628-2008 latex paint freeze-thaw resistance determination, carrying out freeze-thaw cycling on the finished product paint for 3 times to prepare a sample to be determined, then determining the viscosity of the sample to be determined by adopting a stormer viscometer, recording the viscosity as the viscosity value of the sample to be determined, and recording data; and (3) the viscosity difference is large, which indicates that the stability is poor under the condition, and the viscosity difference is small, which indicates that the stability of the coating is good under the condition.
3. Storage stability testing
The finished coatings are prepared by the preparation methods of the examples 1-8 and the comparative examples 1-3 respectively, and the room temperature stability, the thermal storage stability and the low temperature stability of the finished coatings under different conditions are detected by referring to the detection method of the thermal storage stability in the HG/T4343-2012 aqueous multicolor architectural coating.
And (3) detecting the stability at room temperature: preparing a sample after the preparation of the finished coating is finished, and respectively detecting the viscosities of examples 1-8 and comparative examples 1-3 by adopting a stormer viscometer and recording as initial viscosity values; then placing the sample for 15d under the conditions of 25 ℃ and 55% of relative humidity to prepare a sample to be detected, measuring the viscosity of the sample to be detected by adopting a stormer viscometer, recording the viscosity as the viscosity value of the sample to be detected, and recording data; and (3) the viscosity difference is large, which indicates that the stability is poor under the condition, and the viscosity difference is small, which indicates that the stability of the coating is good under the condition.
And (3) detecting the thermal storage stability: preparing a sample after the preparation of the finished coating is finished, and respectively detecting the viscosities of examples 1-8 and comparative examples 1-3 by adopting a stormer viscometer and recording as initial viscosity values; then putting the sample into a constant-temperature drying oven at 50 ℃, taking out the sample after 15 days, standing the sample for 3 hours at 25 ℃ to prepare a sample to be measured, measuring the viscosity of the sample to be measured by adopting a stormer viscometer, recording the viscosity value as the viscosity value of the sample to be measured, and recording data; and (3) the viscosity difference is large, which indicates that the stability is poor under the condition, and the viscosity difference is small, which indicates that the stability of the coating is good under the condition.
Detecting the low-temperature stability, preparing a sample after the preparation of the finished coating is finished, and respectively detecting the viscosities of examples 1-8 and comparative examples 1-3 by using a stormer viscometer and recording as initial viscosity values; then placing the sample for 15 days under the conditions of 5 ℃ and 55% of relative humidity, taking out the sample after 15 days, placing the sample for 3 hours under the condition of 25 ℃ to prepare a sample to be detected, then measuring the viscosity of the sample to be detected by adopting a stormer viscometer, recording the viscosity as the viscosity value of the sample to be detected, and recording data; and (3) the viscosity difference is large, which indicates that the stability is poor under the condition, and the viscosity difference is small, which indicates that the stability of the coating is good under the condition.
TABLE 1 Performance test Table
TABLE 2 Performance test Table
As can be seen by combining the components A, B and C in the combination of the embodiments 1 and 2-3 and the tables 1 and 2 and FIG. 1, the finished coating has better water resistance, good viscosity stability no matter stored in a room temperature environment, a high temperature environment and a low temperature environment, and the viscosity stability is still good under a freeze-thaw condition.
By combining the example 1 and the example 4 and combining the tables 1 and 2, it can be seen that the difference between the water resistance of the example 4 at 5d and 15d is smaller than that of the example 1, and the difference between the viscosity under the conditions of room temperature, high temperature, low temperature and freeze-thaw is smaller than that of the example 1, and the viscosity difference is small, which indicates good stability, so that after the intercalated modified kaolin is treated by the benzamide, the kaolin, the magnesium lithium silicate protective colloid and the hydrophobic modified cellulose ether are matched, and the benzamide is loaded on the surface of the network connection structure formed by the magnesium lithium silicate protective colloid and the hydrophobic modified cellulose ether by utilizing the attraction effect of the amide group of the benzamide and the magnesium lithium silicate negative ions, so that the deposition and delamination of the coating are prevented, and the stability of the finished coating is further ensured.
By combining example 4 and examples 5-7 with tables 1 and 2, it can be seen that in the preparation process of example 5, ultrasonic dispersion is replaced by ordinary stirring, compared to example 4, the difference between the water resistance of example 5 at 5d and 15d is greater than that of example 4, and the difference between the viscosity of example 4 at room temperature, high temperature, low temperature and freeze-thaw conditions is greater than that of example 4; the grinding is matched with ultrasonic dispersion, so that a benzamide solution can conveniently enter a pore structure of the kaolin, the intercalation modified kaolin can conveniently load the benzamide, the intercalation modified kaolin is conveniently connected with a network connection structure, the color is further protected, and the water resistance and the stability of the finished coating are improved.
Example 6 the intercalated modified kaolin was prepared without grinding, and compared to example 4, example 6 had a greater difference in water resistance at 5d, 15d than example 4, and a greater difference in viscosity at room temperature, elevated temperature, low temperature, freeze-thaw conditions than example 4; the grinding can increase the porosity of kaolin, so that a benzamide solution with higher content can be conveniently loaded, and the benzamide is loaded on the surface of a network connection structure formed by the magnesium lithium silicate protective glue and the hydrophobically modified cellulose ether by utilizing the attraction of the amide group of the benzamide and the magnesium lithium silicate negative ions, so that the deposition and delamination of the coating are prevented, and the stability of the finished coating is further ensured.
Example 7 the raw material is replaced by bentonite with the same mass for the intercalation modified kaolin, compared with example 1, the difference of water resistance of example 7 in 5d and 15d is larger than that of example 4, and the difference of viscosity under the conditions of room temperature, high temperature, low temperature and freeze-thaw is larger than that of example 4; the network structure formed by the bentonite, the magnesium lithium silicate protective glue and the hydrophobic modified cellulose ether has no connection effect, so that the hydrophobicity and the stability of the finished paint are easily influenced.
By combining the example 1 and the example 8 and combining the tables 1 and 2, the efficient dispersant HT-5040 is selected as the dispersant in the raw material in the example 8, compared with the example 1, the water resistance of the example 8 at 5d and 15d is poorer than that of the example 1, and the viscosity difference under the conditions of room temperature, high temperature, low temperature and freeze-thaw is larger than that of the example 1; the matching of polyacrylamide, magnesium silicate lithium protective adhesive and hydrophobic modified cellulose ether is illustrated, and carbonyl and amino groups in the polyacrylamide are matched with the magnesium silicate lithium to form hydrogen bonds, so that the polyacrylamide serving as a dispersing agent is attached to the surface of a network connection structure formed by the magnesium silicate lithium protective adhesive and the hydrophobic modified cellulose ether, and the intercalation modified kaolin on the surface is matched to further promote the dispersion of color paste, further improve the internal binding force of the coating, prevent precipitation, improve the storage stability of the coating and improve the hydrophobic effect of the coating.
Combining example 1 and comparative example 1 and tables 1 and 2, it can be seen that, compared to example 1, the water resistance of comparative example 1 is inferior to that of example 1 in 5d and 15d, and the viscosity difference under the conditions of room temperature, high temperature, low temperature and freeze-thaw is greater than that of example 1 when the fillers are replaced by the same mass of snowflake white in the component a of comparative example 1; the filler, the magnesium lithium silicate protective adhesive and the hydrophobically modified cellulose ether are matched, and the good dispersion effect and the color protection effect of the filler are utilized, so that the network connection structure is convenient to seal water, not only can the component precipitation be avoided, but also the influence of a cosolvent on the hydrophobically modified cellulose ether can be avoided, and the stability and the water resistance of the finished coating are improved.
Combining example 1 and comparative example 2 and tables 1, 2 and fig. 2, it can be seen that, by replacing the hydrophobically modified cellulose ether with an equal mass of sodium bentonite in the component C feedstock of comparative example 2, compared to example 1, comparative example 2 has inferior water resistance to example 1 at 5d and 15d, and has a greater difference in viscosity at room temperature, high temperature, low temperature, and freeze-thaw conditions than example 1; the sodium bentonite is shown to have no crosslinking reaction with the lithium magnesium silicate, has no influence on the viscosity of the finished paint, and only has a simple suspension effect, so that the water resistance of the finished paint needs substances such as a thickening agent, a film forming aid and the like, and the water resistance of the finished paint is poor, and the suspension effect easily influences the stability of the finished paint.
Combining example 1 and comparative example 3 and tables 1 and 2, it can be seen that in comparative example 3, when the component A, the component B and the component C are directly mixed and stirred in the preparation of the finished coating, compared with example 1, the water resistance of comparative example 3 is inferior to that of example 1 in 5d and 15d, and the viscosity difference under the conditions of room temperature, high temperature, low temperature and freeze-thaw is larger than that of example 1; the direct mixing is illustrated, so that the filler, the dispersing agent and other substances of the component A are not easy to uniformly contact with the network connection structure formed by the component B and the component C, and the water resistance of the finished coating is improved while the raw materials are uniformly dispersed by limiting the mixing time; and the paint has better anti-settling effect by matching with substances such as film forming auxiliary agents, thickening agents, solvents and the like, so that the stability of the finished paint is improved, and the finished paint has better product quality and higher production efficiency.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The super-waterproof multicolor paint is characterized by comprising a component A, a component B and a component C; wherein the mass ratio of the component A to the component B to the component C is 40-60:20: 20-40;
the component A is prepared from the following raw materials in parts by weight: 50-65 parts of water, 1.0-1.5 parts of cellulose ether, 0.2-0.5 part of dispersant, 0.5-1.0 part of defoamer, 1.0-1.5 parts of antifreeze, 1.0-1.5 parts of film-forming additive, 0.5-1.0 part of bactericide, 5.0-10 parts of filler, 0.1-0.3 part of pH regulator, 20-35 parts of emulsion, 0.05-0.2 part of wetting agent, 5-7 parts of protective adhesive solution and 20-60 parts of snowflake white;
the component B is prepared from the following raw materials in parts by weight: 94-96 parts of water and 4-10 parts of magnesium lithium silicate protective adhesive;
the component C is prepared from the following raw materials in parts by weight: 20-30 parts of water, 2-3 parts of ethylene glycol, 0.4-0.6 part of alkali swelling thickener, 0.2-0.4 part of defoamer, 0.1-0.2 part of pH regulator, 2-3 parts of film-forming assistant, 0.3-0.5 part of bactericide, 50-80 parts of silicone-acrylic emulsion and 0.1-0.2 part of hydrophobic modified cellulose ether.
2. The super-water-resistant multicolor paint as claimed in claim 1, wherein: the component A is prepared by the following method:
adding water, cellulose ether, a dispersing agent, a defoaming agent, an antifreezing agent, a film forming aid, a bactericide, a filler and a pH regulator into a dispersion cylinder, dispersing the system to the fineness of less than 40um at the rotating speed of 800-1200 rpm, adding an emulsion, a wetting agent, a protective glue solution and snowflake white, and uniformly stirring at the rotating speed of 300-1000 rpm to obtain the component A.
3. The super-water-resistant multicolor paint as claimed in claim 1, wherein said component B is prepared by the following method:
adding water and lithium magnesium silicate protective adhesive into the dispersion cylinder, and uniformly stirring to obtain the component B.
4. The super-water-resistant multicolor paint as claimed in claim 1, wherein said component C is prepared by the following method:
adding water, silicone-acrylate emulsion, film forming aid, glycol, bactericide, alkali swelling thickener, defoamer, pH regulator and hydrophobic modified cellulose ether into a dispersion cylinder, and stirring and mixing uniformly to obtain the component C.
5. The ultra-water-resistant multicolor paint according to claim 1, wherein the filler in component A is intercalation modified kaolin.
6. The super water-resistant multicolor paint according to claim 5, wherein said intercalated modified kaolin is intercalated and modified with benzamide.
7. The water-resistant multicolor paint according to claim 1, wherein the dispersant in component A is polyacrylamide.
8. The super water-resistant multicolor paint according to claim 1, wherein the hydrophobically modified cellulose ether in the C component is hydrophobically modified hydroxyethyl cellulose ether.
9. The method for preparing a super-water-resistant multicolor paint according to any one of claims 1 to 8, comprising the steps of:
weighing the component B and the component C, mixing and stirring, adding the component A, continuously stirring and mixing to obtain a finished product.
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| CN202111467683.8A CN114350220A (en) | 2021-12-02 | 2021-12-02 | Super-waterproof colorful coating and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116731581A (en) * | 2023-07-21 | 2023-09-12 | 广东嘉宝莉科技材料有限公司 | Artistic paint with wire drawing effect and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109233511A (en) * | 2017-06-13 | 2019-01-18 | 上海三银涂料科技股份有限公司 | Imitative yellow rust stone grain, preparation method and the imitative yellow rust stone multicolor finish of corresponding water-water |
| CN112063258A (en) * | 2020-09-25 | 2020-12-11 | 天津德普威涂料有限公司 | Water-in-water multicolor paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109233511A (en) * | 2017-06-13 | 2019-01-18 | 上海三银涂料科技股份有限公司 | Imitative yellow rust stone grain, preparation method and the imitative yellow rust stone multicolor finish of corresponding water-water |
| CN112063258A (en) * | 2020-09-25 | 2020-12-11 | 天津德普威涂料有限公司 | Water-in-water multicolor paint and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116731581A (en) * | 2023-07-21 | 2023-09-12 | 广东嘉宝莉科技材料有限公司 | Artistic paint with wire drawing effect and preparation method thereof |
| CN116731581B (en) * | 2023-07-21 | 2024-05-14 | 广东嘉宝莉科技材料有限公司 | Artistic paint with wire drawing effect and preparation method thereof |
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