CN116023814A - Dry powder emulsion paint and preparation method and application method thereof - Google Patents
Dry powder emulsion paint and preparation method and application method thereof Download PDFInfo
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- CN116023814A CN116023814A CN202310014680.1A CN202310014680A CN116023814A CN 116023814 A CN116023814 A CN 116023814A CN 202310014680 A CN202310014680 A CN 202310014680A CN 116023814 A CN116023814 A CN 116023814A
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- 239000003973 paint Substances 0.000 title claims abstract description 111
- 239000000839 emulsion Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 13
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- 238000003756 stirring Methods 0.000 claims abstract description 42
- 238000010521 absorption reaction Methods 0.000 claims abstract description 37
- 239000000945 filler Substances 0.000 claims abstract description 34
- 239000000049 pigment Substances 0.000 claims abstract description 33
- 239000002270 dispersing agent Substances 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 20
- 229920002678 cellulose Polymers 0.000 claims abstract description 18
- 239000001913 cellulose Substances 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 22
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000004816 latex Substances 0.000 claims description 10
- 229920000126 latex Polymers 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 4
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 4
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical group OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 235000010215 titanium dioxide Nutrition 0.000 claims description 4
- RFRMMZAKBNXNHE-UHFFFAOYSA-N 6-[4,6-dihydroxy-5-(2-hydroxyethoxy)-2-(hydroxymethyl)oxan-3-yl]oxy-2-(hydroxymethyl)-5-(2-hydroxypropoxy)oxane-3,4-diol Chemical compound CC(O)COC1C(O)C(O)C(CO)OC1OC1C(O)C(OCCO)C(O)OC1CO RFRMMZAKBNXNHE-UHFFFAOYSA-N 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 239000010456 wollastonite Substances 0.000 claims description 3
- 229910052882 wollastonite Inorganic materials 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
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- 239000000654 additive Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of dry powder paint, and particularly relates to dry powder emulsion paint, a preparation method and a use method thereof. The dry powder emulsion paint in the prior art has the problem of difficult dispersion, has poor fineness after conventional stirring by adding water, is agglomerated with large particles, seriously influences the paint film effect, and greatly limits the use of the dry powder emulsion paint. The invention solves the problem of poor dispersibility of the existing dry powder emulsion paint by controlling the proportions of pigment and filler, redispersible rubber powder, dispersing agent and cellulose in different proportions and controlling the proportions of high oil absorption powder in the pigment and filler. The preparation method of the dry powder emulsion paint provided by the invention can be obtained by conventional mixing. According to the invention, by changing the using method of the dry powder emulsion paint, water is added in sections at the application end, the emulsion paint obtained by stirring in sections has excellent fineness, and the obtained emulsion paint slurry can be directly used.
Description
Technical Field
The invention belongs to the technical field of dry powder paint, and particularly relates to dry powder emulsion paint, a preparation method and a use method thereof.
Background
In recent years, the emulsion paint has the advantages of rapid film formation, short construction period, low construction cost, excellent air permeability, scrubbing resistance and the like, and is widely applied to environment-friendly coatings for housing and building. However, the emulsion paint has certain problems in application, such as adding more auxiliary agents, leading to insufficient environmental protection, and adding a certain amount of preservative for ensuring storage; the emulsion paint has large dosage and high freight cost. In contrast, the dry powder emulsion paint does not need to be added with preservatives, antifreeze additives, film forming additives and the like, the environmental protection performance is greatly improved, and because the dry powder emulsion paint is transported only by transporting dry powder in the transportation process, the transportation cost is greatly saved by adding water during use, in addition, the dry powder emulsion paint is in a dry powder state, compared with a liquid state, the storage condition is lower, the freezing and freezing risk is avoided, and the collision resistance is also greatly improved. However, the dry powder emulsion paint has the problem of difficult dispersion, has poor fineness after conventional stirring by adding water, is agglomerated with large particles, seriously influences the paint film effect, and greatly limits the use of the dry powder emulsion paint.
The present invention has been made in view of the above problems.
Disclosure of Invention
The first aim of the invention is to provide dry powder emulsion paint, which is not environment-friendly because all raw materials are powdery and excessive auxiliary agents are not needed to be added into the emulsion paint like liquid emulsion paint; the dry powder emulsion paint provided by the invention can achieve good fineness by stirring with a conventional putty stirrer, and the fineness is less than 60 mu m, so that the dry powder emulsion paint meets the requirements of producing emulsion paint in a conventional factory.
The second aim of the invention is to provide a preparation method of the dry powder emulsion paint, wherein the dry powder emulsion paint can be obtained by uniformly mixing the raw materials according to the proportion of the invention, and the preparation method is simple.
The third object of the invention is to provide a use method of the dry powder emulsion paint, compared with the conventional emulsion paint, the dry powder emulsion paint can be directly used after being added with water and stirred uniformly at the application end, thereby greatly saving the transportation cost; in addition, compared with the conventional dry powder products such as seaweed mud (no dispersibility requirement and no fineness), the dry powder emulsion paint has excellent dispersibility, does not need to be like emulsion paint factory grinding slurry (the factory can use equipment to perform high-speed dispersion grinding, so that the fineness is good, the slurry is uniform and almost no particles), can be uniformly stirred only by using a conventional putty stirring mode, can achieve better fineness, and is suitable for being directly used by application terminals.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides a dry powder emulsion paint which is mainly prepared from the following raw materials in parts by weight:
56.5-79 parts of pigment and filler, 20-40 parts of redispersible rubber powder, 0.4-1.5 parts of dispersing agent and 0.4-2 parts of cellulose;
the pigment filler comprises high oil absorption powder;
the oil absorption of the high oil absorption powder is more than or equal to 50.
Further, in the preferred embodiment of the present invention, the high oil absorption powder is 5% or more by weight of the pigment and filler;
further, in the preferred embodiment of the present invention, the high oil absorption powder is 5% -30% by weight of the pigment and filler.
Further, in a preferred embodiment of the present invention, the pigment and filler further comprises a powder with low oil absorption; the oil absorption of the low oil absorption powder is less than 50.
Further, in a preferred embodiment of the present invention, the low oil absorption powder is at least one of titanium white powder, heavy calcium carbonate, talc powder, mica powder, barium sulfate and wollastonite.
Further, in a preferred embodiment of the present invention, the pigment and filler has a particle size of 500 mesh or more.
Further, in a preferred embodiment of the present invention, the high oil absorption powder is at least one of kaolin, light calcium carbonate and diatomaceous earth.
Further, in a preferred embodiment of the present invention, the cellulose is hydroxypropyl methylcellulose or hydroxyethyl cellulose.
Further, in a preferred embodiment of the present invention, the dispersing agent is a dry powder dispersing agent.
Further, in a preferred embodiment of the present invention, the dispersant is a polyacrylate ammonium salt dispersant, a polyacrylate sodium salt dispersant or sodium hexametaphosphate.
In a second aspect, the invention provides a preparation method of dry powder emulsion paint, which is prepared by selecting pigment and filler, redispersible rubber powder, dispersing agent and cellulose in parts by weight, and fully stirring and uniformly mixing.
In a third aspect, the present invention provides a method of using a dry powder latex paint, the method comprising the steps of:
(1) Adding pigment and filler into a container according to a proportion, redispersing rubber powder, and uniformly mixing a dispersing agent and cellulose to prepare dry powder emulsion paint;
(2) Adding water into the dry powder emulsion paint, and uniformly stirring to obtain a mixture A;
(3) And (3) continuously adding water into the mixture A, and uniformly stirring to obtain the dry powder emulsion paint slurry capable of being directly used.
Further, in the preferred embodiment of the present invention, the weight of water added to the dry powder emulsion paint is 35% -50% of the weight of the dry powder emulsion paint, and the weight of water added to the mixture A is 30% -65% of the weight of the dry powder emulsion paint.
Further, in a preferred embodiment of the present invention, the stirring time after adding water to the dry powder emulsion paint is 2-5min.
Compared with the prior art, the invention has at least the following technical effects:
compared with the conventional emulsion paint, the emulsion paint with the easily dispersible dry powder can be directly used after being directly added with water and uniformly stirred at an application end, so that the transportation cost is greatly saved; compared with the conventional dry powder products such as seaweed mud (no dispersibility requirement and no fineness), the dry powder emulsion paint has excellent dispersibility, does not need to be like emulsion paint factory grinding slurry (the factory can use equipment to perform high-speed dispersion grinding, so that the fineness is good, the powder is uniform and almost no particles), can be uniformly stirred only by using a conventional putty stirring mode, can reach better fineness, can be lower than 60 mu m after stirring, and is suitable for being directly used by application terminals.
The second aim of the invention is to provide a preparation method of the dry powder emulsion paint, wherein the dry powder emulsion paint can be obtained by uniformly mixing the raw materials according to the proportion of the invention, and the preparation method is simple.
The third object of the invention is to provide a method for using dry powder emulsion paint, which comprises the steps of adding water in sections at an application end, stirring in sections, adding water in the first section to enable dry powder and water to be mixed to form a thicker form, grinding the dry powder in the dry powder paint into original particle forms or complex forms with smaller volumes from large-particle powder complex forms during stirring, wherein the stirring process of putty is equivalent to the grinding process during the thicker system, stirring for a certain time to obtain a mixed state A, and stirring with water in the second section to obtain emulsion paint, wherein the obtained emulsion paint slurry can be directly used.
Drawings
FIG. 1 shows the dry emulsion paint of example 1 of the present invention in dry powder form
FIG. 2 shows the state of the first water addition of the dry powder emulsion paint of example 1 of the present invention
FIG. 3 is a second water addition state of the dry powder latex paint of example 1 of the invention
FIG. 4 is a photograph of a second time after adding water to the dry powder emulsion paint of example 1 of the present invention
FIG. 5 is a photograph of a second time water-added card-making process of the dry powder emulsion paint of example 2 of the present invention
FIG. 6 is a photograph of a second time after adding water to the dry powder emulsion paint of example 3 of the present invention
FIG. 7 is a photograph of a second time after water addition of the dry powder emulsion paint of comparative example 1 of the present invention
FIG. 8 is a photograph of a second time water addition of the dry powder emulsion paint of comparative example 5 of the present invention
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the following examples, which are to be construed as merely illustrative and not limitative of the scope of the invention, but are not intended to limit the scope of the invention to the specific conditions set forth in the examples, either as conventional or manufacturer-suggested, nor are reagents or apparatus employed to identify manufacturers as conventional products available for commercial purchase.
The technical scheme of the specific implementation mode of the invention is as follows:
in a first aspect, the invention provides a dry powder emulsion paint which is mainly prepared from the following raw materials in parts by weight:
56.5-79 parts of pigment and filler, 20-40 parts of redispersible rubber powder, 0.4-1.5 parts of dispersing agent and 0.4-2 parts of cellulose;
the pigment and filler comprises high oil absorption powder;
the oil absorption of the high oil absorption powder is more than or equal to 50;
the particle size of the pigment and filler is more than or equal to 500 meshes; the pigment and filler particle size of 500 meshes refers to primary particle size of 500 meshes, and because powder of normal 500 meshes aggregates to form primary particles, aggregates and a complex polymer coexists, the size of the macro-particle size is different and may exceed 500 meshes.
Preferably, the weight ratio of the high oil absorption powder to the pigment and filler is more than or equal to 5%;
further preferably, the high oil absorption powder accounts for 5 to 30 percent of the pigment and filler by weight.
Preferably, the high oil absorption powder is at least one of kaolin, light calcium carbonate and diatomite.
Preferably, the pigment and filler further comprises a low oil absorption powder; the oil absorption of the low oil absorption powder is less than 50.
Further preferably, the low oil absorption powder is at least one of titanium white powder, heavy calcium carbonate, talcum powder, mica powder, barium sulfate and wollastonite.
The high oil absorption powder is added into the dry powder emulsion paint, so that the collision probability between the powder can be improved during stirring, and the grinding is improved. The particle size of the filler is required to be not less than 500 meshes, coarse powder, such as 400 meshes, contains more impurities and hard particles, and the grinding dispersion efficiency is limited because the application end is not provided with high-power grinding equipment, so that finer powder is required to be selected. For more reasonable construction of a dispersion environment, the addition of cellulose to the raw materials can increase the low-shear and medium-shear viscosity.
Wherein the oil absorption is the minimum mass (in g) of oil required to add 100g of pigment until the pigment is completely wetted, the unit is usually a percentage unit, the oil absorption is not less than 50, representing 100g of oil absorbed by not less than 50g of powder.
Further preferably, the above filler has a particle size of 500 to 1250 mesh. Because the stirring and grinding efficiency of the putty is limited, the fine powder without hard particles is required to be selected, the fineness can meet better dispersion requirements, and the putty can be used as a filler of emulsion paint, so that the physical properties of the emulsion paint are improved.
Preferably, the cellulose is hydroxypropyl methylcellulose or hydroxyethyl cellulose;
further preferably, the cellulose has a molecular weight of less than 50000. The molecular weight of more than 50000 is slightly inferior in dispersibility, so that the dispersibility effect is better when the molecular weight is lower than 50000.
Preferably, the dispersing agent is a dry powder dispersing agent; the dry powder dispersing agent is used for enabling the specific surface area to be large and the free energy of a system to be large after powder is ground into primary particles, the primary particles have a tendency of mutually aggregating to reduce the free energy of the system, and the dispersing agent enables the powder to mutually repel through charge repulsion and steric hindrance.
Further preferably, the dispersant is a polyacrylate ammonium salt dispersant, a polyacrylate sodium salt dispersant, or sodium hexametaphosphate.
In a second aspect, the invention provides a preparation method of dry powder emulsion paint, which is prepared by selecting pigment and filler, redispersible rubber powder, dispersing agent and cellulose in parts by weight, and fully stirring and uniformly mixing.
In a third aspect, the present invention provides a method of using a dry powder latex paint, the method comprising the steps of:
(1) Adding pigment and filler into a container according to a proportion, redispersing rubber powder, and uniformly mixing a dispersing agent and cellulose to prepare dry powder emulsion paint;
(2) Adding water accounting for 35-50% of the weight of the emulsion paint into the dry powder emulsion paint, and stirring for 2-5 minutes to obtain a mixture A;
(3) And continuously adding 30% -65% of water by weight of the emulsion paint into the mixture A, and uniformly stirring to obtain the dry powder emulsion paint slurry capable of being directly used.
For dry powder paint, the conventional method is to add water and stir at one time according to a proportion, and the technical scheme is to add water and stir in two sections, wherein the water and stir in the first section are uniform, the water and stir in the second section are directly used, the fineness of the system can reach the requirement similar to that of emulsion paint roller coating spraying only by a two-section stirring method, and the fineness can be less than 60 mu m.
The dry powder emulsion paint is prepared by adding water in sections at an application end and stirring in sections, wherein the first section of water is added to enable dry powder and water to be mixed to form a thicker form, and because the system is thicker, when stirring, dry powder in the dry powder paint is more easily ground into an original particle form with smaller volume or a complex polymer with smaller volume from a large particle complex polymer, when the system is thicker, the stirring process of putty is equivalent to the grinding process, a mixed state A is obtained after stirring, and the mixed state A is stirred by second section of water to obtain emulsion paint, so that the obtained emulsion paint slurry can be directly used.
Adding water in two sections, wherein the water adding amount for the first time cannot exceed 50% of the weight of the dry powder emulsion paint, the water adding amount is excessive, the viscosity of the system is low, and the dry powder is difficult to grind into original particles or a complex polymer with smaller volume under the stirring state; when 35-50% of the weight of the dry powder coating is added with water, the water addition amount is moderate, and the powder can be ground into original particles or a complex polymer with smaller volume under the grinding of a putty stirrer.
The first stirring time is only 2-5 minutes, the second stirring is uniform, and the second stirring time is usually not more than 3 minutes. At present, the existing dry powder coating needs to be stirred for at least 20-30 minutes in the early stirring time, and needs to be filtered by a 60-mesh filter screen (the filtering pore of the 60-mesh filter screen is thicker, and the filtering pore of the 120-mesh filter screen is finer), and the existing dry powder coating can only be filtered by 60 meshes but not 120 meshes because of the fineness difference, otherwise, the condition that the coating cannot be filtered or the filtering is blocked can occur), and needs to be leveled by a scraping plate after rolling coating. However, the paint in the technical scheme can not exceed 10 minutes after the two stirring times are added, has better fineness, can be smaller than 60 mu m, can be suitable for filtering by a 120-mesh filter screen, and can finish construction after rolling coating.
The following describes specific embodiments of the present invention in detail. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
According to the invention, the selected raw materials of kaolin are 4000-mesh HY-T-80, diatomite is Celabrite diatomite, light calcium carbonate is 1250-mesh wide source, mica powder is Gray GB-4, titanium dioxide is SR-237, heavy calcium carbonate is 1250-mesh Colon, talcum powder is CMS-666, barium sulfate is YF-1250,300-mesh heavy calcium carbonate is 1250-mesh Colon heavy calcium carbonate is Haoyu 1250-heavy calcium, 500-mesh heavy calcium carbonate is banana kaolin 500-mesh heavy calcium, the dispersed rubber powder is Wake 314 rubber powder, a dispersing agent is EXP004 of Hemerocal technology, hydroxyethyl cellulose is HBR250 of Shi blue, and hydroxypropyl methyl cellulose is Shi blue K100LV.
Embodiment 1
The dry powder emulsion paint is prepared according to the embodiment, and pigment and filler in parts by weight are selected according to the proportion, and the dry powder emulsion paint can be obtained after the dispersing rubber powder, the dispersing agent and the cellulose are fully stirred and uniformly mixed.
The embodiment discloses a use method of dry powder emulsion paint, which comprises the following steps:
(1) Adding pigment and filler into a container according to a proportion, redispersing rubber powder, and uniformly mixing a dispersing agent and cellulose to prepare dry powder emulsion paint;
(2) Adding water accounting for 35-50% of the weight of the emulsion paint into the dry powder emulsion paint, and stirring for 2-5 minutes to obtain a mixture A;
(3) And continuously adding 30% -65% of water by weight of the emulsion paint into the mixture A, and uniformly stirring to obtain the dry powder emulsion paint slurry capable of being directly used.
The preparation and use methods of the dry powder emulsion paint prepared above are evaluated, and the evaluation results are shown in tables 1-5;
the following examples show the raw materials and the mass (unit kg) thereof in tables 1 to 4, wherein: the preparation method is the same as that of example 1, and the water addition amount of the two times of the using method is shown in tables 1 to 4, so that the description of the other examples is not repeated.
TABLE 1
TABLE 2
TABLE 3 Table 3
TABLE 4 Table 4
TABLE 5
As can be seen from the above tables 1 to 5, in example 4, the high oil absorption powder was good in dispersibility at a 100% ratio in the pigment filler, but the paint film was poor in properties, and no use value was seen at present, but improvement by adjusting other components at a later stage was not excluded. In comparative example 1, the powder with high oil absorption is insufficient and the fineness is poor; in comparative example 2, there was no powder with high oil absorption and the fineness was poor; in comparative example 3, no cellulose was added and the fineness was poor; in comparative example 4, no dispersant is added, the mixture is easy to turn coarse, and particles are aggregated after standing; the pigment and filler in comparative examples 5 and 6 have larger mesh number and poorer fineness; the first water addition was excessive and the fineness of the final dispersion was poor in comparative example 7.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the invention and is not intended to limit the scope of the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The dry powder emulsion paint is characterized by being prepared from the following raw materials in parts by weight:
56.5-79 parts of pigment and filler, 20-40 parts of redispersible rubber powder, 0.4-1.5 parts of dispersing agent and 0.4-2 parts of cellulose;
the pigment filler comprises high oil absorption powder;
the oil absorption of the high oil absorption powder is more than or equal to 50.
2. The dry powder emulsion paint of claim 1 wherein the high oil absorption powder comprises at least 5% by weight of pigment and filler;
preferably, the high oil absorption powder accounts for 5-30% of the pigment and filler by weight.
3. The dry powder latex paint of claim 1, wherein said pigment filler further comprises a low oil absorption powder; the oil absorption of the low oil absorption powder is less than 50;
preferably, the low oil absorption powder is at least one of titanium white powder, heavy calcium carbonate, talcum powder, mica powder, barium sulfate and wollastonite.
4. The dry powder latex paint of claim 1, wherein said pigment filler has a particle size of greater than or equal to 500 mesh.
5. The dry powder latex paint of claim 2, wherein said high oil absorption powder is at least one of kaolin, light calcium carbonate, and diatomaceous earth.
6. The dry powder latex paint of claim 1, wherein the cellulose is hydroxypropyl methylcellulose or hydroxyethyl cellulose.
7. The dry powder latex paint of claim 1 wherein said dispersant is a dry powder dispersant;
preferably, the dispersant is a polyacrylate ammonium salt dispersant, a polyacrylate sodium salt dispersant, or sodium hexametaphosphate.
8. A method for preparing the dry powder emulsion paint as claimed in any one of claims 1 to 7, characterized in that the dry powder emulsion paint is prepared by selecting pigment and filler, redispersible rubber powder, dispersing agent and cellulose according to the proportion, and fully and uniformly stirring and mixing the components.
9. A method of using the dry powder latex paint of any one of claims 1 to 7, said method comprising the steps of:
(1) Adding pigment and filler into a container according to a proportion, redispersing rubber powder, and uniformly mixing a dispersing agent and cellulose to prepare dry powder emulsion paint;
(2) Adding water into the dry powder emulsion paint, and uniformly stirring to obtain a mixture A;
(3) And (3) continuously adding water into the mixture A, and uniformly stirring to obtain the dry powder latex paint capable of being directly used.
Preferably, the weight of water added into the dry powder emulsion paint is 35-50% of the weight of the dry powder emulsion paint, and the weight of water added into the mixture A is 30-65% of the weight of the dry powder emulsion paint.
10. The method of using the dry powder emulsion paint as claimed in claim 9, wherein the stirring time after adding water to the dry powder emulsion paint is 2-5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310014680.1A CN116023814A (en) | 2023-01-05 | 2023-01-05 | Dry powder emulsion paint and preparation method and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310014680.1A CN116023814A (en) | 2023-01-05 | 2023-01-05 | Dry powder emulsion paint and preparation method and application method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146240A (en) * | 2013-03-26 | 2013-06-12 | 成都新柯力化工科技有限公司 | Dry powder latex paint and preparation method |
| CN104974630A (en) * | 2015-07-27 | 2015-10-14 | 华南理工大学 | High-scrubbing-resistant dry powder paint and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146240A (en) * | 2013-03-26 | 2013-06-12 | 成都新柯力化工科技有限公司 | Dry powder latex paint and preparation method |
| CN104974630A (en) * | 2015-07-27 | 2015-10-14 | 华南理工大学 | High-scrubbing-resistant dry powder paint and preparation method thereof |
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