CN115651454B - Anti-condensation interior wall emulsion paint and preparation method thereof - Google Patents
Anti-condensation interior wall emulsion paint and preparation method thereof Download PDFInfo
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Abstract
The application relates to the field of interior wall paint, in particular to an anti-dewing interior wall emulsion paint and a preparation method thereof. An anti-dewing interior wall latex paint comprises the following raw materials in percentage by mass: 0.3 to 0.5 percent of cellulose, 0.5 to 0.8 percent of dispersing agent, 0.1 to 0.3 percent of wetting agent, 0.2 to 0.5 percent of defoamer, 12 to 25 percent of titanium pigment, 15 to 25 percent of inorganic pigment and filler, 0.2 to 0.5 percent of bactericide, 0.9 to 1.8 percent of auxiliary agent, 15 to 25 percent of emulsion, 0.5 to 1.5 percent of film forming auxiliary agent, 0.2 to 0.5 percent of thickening agent, 15 to 30 percent of aerogel dispersion paste and water to 100 percent; the emulsion is one or more of styrene-acrylic emulsion, pure acrylic emulsion and silicone-acrylic emulsion. The application has the advantage of improving the dew formation.
Description
Technical Field
The application relates to the field of interior wall paint, in particular to an anti-dewing interior wall emulsion paint and a preparation method thereof.
Background
With the rapid development of the industries of real estate and buildings, urban building construction is more and more varied, and the aesthetic ideas of families and buildings are continuously improved by people. Latex paint is used as a main paint product for urban building decoration, and annual output and consumption are developed at a growth rate of 10 per year, thus making great contribution to urban construction and beautification. With the improvement of economy and living standard, the requirements of people on the performance of the emulsion paint are continuously improved, low-end inferior paint is gradually eliminated by the market, and the variety and structure of the emulsion paint are increasingly rich.
The interior wall latex paint is prepared by taking water as a dispersion medium, taking aqueous resin as a film forming substance, adding pigment, filler, auxiliary agent and other auxiliary materials, has excellent performances of safety, ecology, no toxicity, no pollution and the like, and accords with the healthy and environment-friendly concept advocated by the modern society.
Although interior wall latex paint has a plurality of excellent performances, the interior wall latex paint on the market can cause water vapor aggregation in the air in a humid environment after being dried to form a film, so that the wall body has a moist feel. Especially in the south of the south, water vapor in the air is heavier, water drops are easily accumulated on the wall surface, dew is formed, water flows even in severe cases, and certain uncomfortable feeling is caused to the living environment.
Disclosure of Invention
In order to improve the dewing condition, the application provides an anti-dewing interior wall latex paint and a preparation method thereof.
In a first aspect, the application provides an anti-condensation interior wall latex paint, which adopts the following technical scheme: an anti-dewing interior wall latex paint comprises the following raw materials in percentage by mass: 0.3 to 0.5 percent of cellulose, 0.5 to 0.8 percent of dispersing agent, 0.1 to 0.3 percent of wetting agent, 0.2 to 0.5 percent of defoamer, 12 to 25 percent of titanium pigment, 15 to 25 percent of inorganic pigment and filler, 0.2 to 0.5 percent of bactericide, 0.9 to 1.8 percent of auxiliary agent, 15 to 25 percent of emulsion, 0.5 to 1.5 percent of film forming auxiliary agent, 0.2 to 0.5 percent of thickening agent, 15 to 30 percent of aerogel dispersion paste and water to 100 percent;
the emulsion is one or a mixture of a plurality of styrene-acrylic emulsion, pure acrylic emulsion and silicone-acrylic emulsion.
By adopting the technical scheme, the aerogel dispersion paste is added into the system, so that the paint film has a larger contact angle, and in actual detection, the liquid contact angle on the surface of the paint film can reach 145 degrees. Therefore, compared with the emulsion paint on the market, the paint film of the application has higher hydrophobicity, so that the water drops are difficult to contact with the surface of the paint film and can not be hung on the paint film, thereby achieving the anti-condensation effect of the paint film and keeping the dryness of the paint film in a humid environment. Meanwhile, due to the high hydrophobicity of the paint film, the water resistance of the paint film is improved, so that the washing resistance of the paint film is improved.
The emulsion is the basis of a system, and the specific type of emulsion, the aerogel dispersion paste and the inorganic pigment and filler have better matching effect, so that the paint can realize excellent anti-condensation and anti-cracking effects.
Preferably, the inorganic pigment filler is at least one or more of heavy calcium carbonate, kaolin, talcum powder, diatomite, mica powder and calcium silicate powder.
Preferably, when the inorganic pigment filler comprises ground calcium carbonate, the ground calcium carbonate is at least one of modified ground calcium carbonate and ordinary ground calcium carbonate A;
wherein, the modified heavy calcium carbonate comprises the following raw materials: the weight ratio of the common heavy calcium carbonate B to the water to the sodium dodecyl polyoxyethylene ether sulfate to the sodium dodecyl benzene sulfonate is 1: (2-5): (0.002-0.004): (0.003-0.006).
Although the hydrophobicity of a paint film can be improved by adding the aerogel dispersing paste into the system, the inventor finds that in actual operation, the addition of the aerogel dispersing paste greatly improves the oil absorption of the paint film, the dispersibility is reduced and unstable, and the paint film is easy to crack.
In response to the above problems, the inventors have made further improvements to the formulation system. When a specific inorganic pigment is selected, the oil absorption can be reduced within a certain range, but the effect is not very remarkable. Thus, the inventor modifies heavy calcium carbonate, and discovers that under the common cooperation of common heavy calcium carbonate B, sodium dodecyl polyoxyethylene ether sulfate and sodium dodecyl benzene sulfonate, the sodium dodecyl polyoxyethylene ether sulfate and the sodium dodecyl benzene sulfonate are coated on the surface of the common heavy calcium carbonate B, so that the performance of the common heavy calcium carbonate B is changed, the lipophilicity of the common heavy calcium carbonate B is improved, the surface energy is reduced, the stabilizing effect, the compatible effect and the dispersing effect of the common heavy calcium carbonate B in a system are greatly improved, and the anti-cracking effect of a paint film is further improved.
The inventor also discovers that the effect of the aerogel dispersion paste can not be influenced by putting the modified heavy calcium carbonate into a system, and the modified heavy calcium carbonate can be matched with the system, so that the aerogel dispersion paste has a more uniform dispersion effect in the system, is not easy to agglomerate, and gives full play to the performance of the aerogel dispersion paste. In addition, the modified heavy calcium carbonate also has good lipophilicity, and is matched with the aerogel dispersion paste, so that the hydrophobic effect of a paint film is improved, and the dryness of the paint film in a humid environment is improved.
Preferably, the preparation method of the modified heavy calcium carbonate comprises the following steps:
adding the common heavy calcium carbonate B into water, and uniformly mixing;
continuously adding sodium dodecyl polyoxyethylene ether sulfate and sodium dodecyl benzene sulfonate, and uniformly mixing;
standing for 12-24h, and performing suction filtration and drying to obtain a material to be used;
calcining the material to be used for 1-2h at 650-750 ℃, and reacting for 1-3h at a temperature; obtaining the modified heavy calcium carbonate.
By adopting the technical scheme, the sodium dodecyl polyoxyethylene ether sulfate and the sodium dodecyl benzene sulfonate are firstly attached to the surface of the common heavy calcium carbonate B and react with the surface of the common heavy calcium carbonate B. And then high-temperature calcination is utilized, and the ordinary heavy calcium carbonate B can generate some holes after calcination, so that the dispersibility is improved.
And (3) adding the modified heavy calcium carbonate into a coating system, wherein if the modified heavy calcium carbonate is matched with other inorganic pigment and filler, part of particles with small particles are attracted by the surface of the modified heavy calcium carbonate, and part of particles with small particles also enter holes, so that gaps among large particles are filled rapidly, the stacking density is increased, the whole oil absorption is further reduced, and the cracking condition is relieved.
Because the modified heavy calcium carbonate has good dispersibility, the modified heavy calcium carbonate is uniformly dispersed in the system and then attracts small particles, the uniform dispersion of the large and small particles in the system is ensured, and the integral performance of a paint film is improved.
Preferably, the heavy calcium carbonate is modified heavy calcium carbonate and ordinary heavy calcium carbonate A, and the mass ratio of the modified heavy calcium carbonate to the ordinary heavy calcium carbonate A is 1: (0.2-0.5).
By adopting the technical scheme, when heavy calcium carbonate is selected, the proportion relation between the modified heavy calcium carbonate and the common heavy calcium carbonate A is further limited, and the inorganic pigment and filler with different particle morphology is matched, so that the system has more excellent dispersing effect, and the cracking resistance effect is improved.
Preferably, the inorganic pigment and filler is heavy calcium carbonate and diatomite, and the mass ratio of the heavy calcium carbonate to the diatomite is 1: (0.3-0.5).
Through adopting above-mentioned technical scheme, under the joint cooperation of diatomaceous earth and modified heavy calcium carbonate, ordinary heavy calcium carbonate A, the frictional force between the granule reduces, has more intensive powder and piles up the effect to improve bulk density, improve anti-cracking effect.
Preferably, the thickener is one or two of alkali swelling thickener and associative polyurethane thickener.
By adopting the technical scheme, the specific type of thickener is beneficial to regulating the consistency of the system and improving the performance of a paint film.
In a second aspect, the application provides a preparation method of an anti-condensation interior wall latex paint, which adopts the following technical scheme:
a preparation method of an anti-dewing interior wall latex paint comprises the following steps:
adding a dispersing agent, a defoaming agent, a bactericide, an auxiliary agent and cellulose into water, and uniformly dispersing;
continuously adding titanium dioxide, a film forming additive and inorganic pigment and filler, and uniformly dispersing;
continuing to add the emulsion and the aerogel dispersion paste, and uniformly dispersing;
continuously adding a thickening agent, and uniformly mixing; obtaining the finished product.
By adopting the technical scheme, various raw materials are added according to a specific input sequence, so that a better mixing effect is achieved, and the properties of various substances can be fully exerted. Before the emulsion and the aerogel dispersing paste are put into the system, the inorganic pigment and the emulsion are uniformly dispersed in the system, and when the emulsion and the aerogel dispersing paste are added into the system, the emulsion permeates into gaps of the inorganic pigment and the emulsion is quickly spread; the aerogel dispersion paste is uniformly dispersed in each part of the system, so that the coating has good anti-condensation and anti-cracking effects.
Preferably, when the titanium dioxide, the film forming additive and the inorganic pigment filler are added and uniformly dispersed, the rotating speed is regulated to 1500-1800r/min; and the rotation speed is regulated to 500-900r/min when the rest is dispersed.
By adopting the technical scheme, when the inorganic pigment and filler are mixed, the rotating speed is increased, the inorganic pigment and filler is rapidly dispersed in the system, and the uniform dispersion of the inorganic pigment and filler in the system is further promoted.
In summary, the application has the following beneficial effects:
1. and adding aerogel dispersion paste into the system to enable the paint film to have a larger contact angle, wherein in actual detection, the liquid contact angle of the surface of the paint film can reach 145 degrees. Therefore, compared with the emulsion paint on the market, the paint film of the application has higher hydrophobicity, so that the water drops are difficult to contact with the surface of the paint film and can not be hung on the paint film, thereby achieving the anti-condensation effect of the paint film and keeping the dryness of the paint film in a humid environment. Meanwhile, due to the high hydrophobicity of the paint film, the water resistance of the paint film is improved, so that the washing resistance of the paint film is improved.
2. Under the common cooperation of the common heavy calcium carbonate B, the sodium dodecyl polyoxyethylene ether sulfate and the sodium dodecyl benzene sulfonate are coated on the surface of the common heavy calcium carbonate B, so that the performance of the common heavy calcium carbonate B is changed, the lipophilicity of the common heavy calcium carbonate B is improved, the surface energy is reduced, the stabilizing effect, the compatible effect and the dispersing effect of the common heavy calcium carbonate B in a system are greatly improved, and the cracking resistance effect of a paint film is improved.
3. The modified heavy calcium carbonate is matched with the aerogel dispersion paste, so that the aerogel dispersion paste has a more uniform dispersion effect in a system, is not easy to agglomerate, and fully exerts the self performance. In addition, the modified heavy calcium carbonate also has good lipophilicity, so that the hydrophobic effect of a paint film is improved and the dryness of the paint film in a humid environment is improved under the mutual cooperation of the modified heavy calcium carbonate and aerogel dispersion paste.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials used in the following examples and comparative examples are all commercially available products.
Preparation example
Preparation example 1
The modified heavy calcium carbonate comprises the following raw materials: ordinary heavy calcium carbonate B, water, sodium dodecyl polyoxyethylene ether sulfate and sodium dodecyl benzene sulfonate.
The specific amounts are shown in Table 1.
The preparation method of the modified heavy calcium carbonate comprises the following steps:
step 1): adding the common heavy calcium carbonate B into water, and stirring and mixing uniformly.
Step 2): continuously adding sodium dodecyl polyoxyethylene ether sulfate and sodium dodecyl benzene sulfonate, magnetically stirring for 10min, and uniformly mixing.
Step 3): standing for 24h, and performing suction filtration and drying to obtain the material to be used.
Step 4): and adding the standby material into a muffle furnace, calcining for 1h at the temperature of 750 ℃, and reacting for 3h at a constant temperature to obtain the modified heavy calcium carbonate.
The modified heavy calcium carbonate is 800 meshes.
Preparation example 2
The modified heavy calcium carbonate is different from the preparation example 1 in the amount of each raw material, and the specific amount is shown in Table 1.
The preparation method of the modified heavy calcium carbonate is different from the preparation example 1 in that,
in the step 3), standing for 12h; in the step 4), the mixture is calcined at 650 ℃ for 2 hours and reacted at a constant temperature for 1 hour.
Preparation example 3
The modified heavy calcium carbonate is different from the preparation example 1 in that the mass ratio of the common heavy calcium carbonate B to water to the sodium dodecyl polyoxyethylene ether sulfate to the sodium dodecyl benzene sulfonate is 1:1:0.02:0.001. details are shown in Table 1.
TABLE 1
| Class of | Preparation example 1 | Preparation example 2 | Preparation example 3 |
| Ordinary heavy calcium carbonate B (kg) | 100 | 100 | 100 |
| Water (kg) | 500 | 200 | 100 |
| Dodecyl polyoxyethylene ether sodium sulfate (kg) | 0.4 | 0.2 | 2 |
| Sodium dodecyl benzene sulfonate (kg) | 0.3 | 0.6 | 0.1 |
Preparation example 4
The modified heavy calcium carbonate is different from the preparation example 1 in that sodium dodecyl benzene sulfonate is replaced by fatty alcohol polyoxyethylene ether with equal mass.
Preparation example 5
Modified heavy calcium carbonate is different from preparation example 1 in that sodium dodecyl polyoxyethylene ether sulfate is replaced with sodium dodecyl sulfate of equal mass.
Examples
Example 1
An anti-dewing interior wall latex paint comprises the following raw materials: water, cellulose, dispersing agent, wetting agent, defoamer, titanium pigment, inorganic pigment filler, bactericide, auxiliary agent, emulsion, film forming auxiliary agent, thickener and aerogel dispersing paste.
Wherein the cellulose is hydroxyethyl cellulose, the dispersing agent is BYK-110 dispersing agent of Pick Germany, the wetting agent is alkylphenol ethoxylate, the defoaming agent is mineral oil defoaming agent, the inorganic pigment filler is mica powder, the bactericide is OIT bactericide, the emulsion is styrene-acrylic emulsion, the film forming auxiliary agent is alcohol ester twelve, and the thickening agent is alkali swelling thickening agent. The auxiliary agent comprises a multifunctional auxiliary agent AMP-95 and an antifreezing agent.
The specific amounts of the respective materials are shown in Table 2.
The application also discloses a preparation method of the anti-dewing interior wall latex paint, which comprises the following steps:
step a): adding water into a dispersing cylinder, starting a stirrer, regulating the rotating speed to 500r/min, sequentially adding a dispersing agent, a defoaming agent, a bactericide, an auxiliary agent and cellulose into the water, and dispersing for 15min.
Step b): continuously adding titanium dioxide, a film forming additive and inorganic pigment and filler into the dispersing cylinder in sequence, and regulating the rotating speed to 1500r/min, and dispersing at a high speed for 25min.
Step c): and (3) transferring the mixture to 500r/min, continuously adding the emulsion and the aerogel dispersion paste into the dispersion cylinder in sequence, and dispersing for 15min.
Step d): and (3) transferring the mixture to 900r/min, continuously adding a thickening agent into the dispersion cylinder, uniformly mixing, adjusting the viscosity to 100+/-2 ku, and detecting to be qualified to obtain a finished product.
Example 2
An anti-dewing interior wall latex paint is different from the embodiment 1 in that the inorganic pigment filler is kaolin, the emulsion is pure acrylic emulsion, and the thickener is associated polyurethane thickener; the amounts of the raw materials are different, and are shown in Table 2 in detail.
The preparation method of the anti-dewing interior wall latex paint is different from the embodiment 1 in that in the step b), the rotating speed is adjusted to 1800r/min, and the paint is dispersed for 20min at a high speed.
Example 3
The difference between the anti-dewing interior wall latex paint and the embodiment 1 is that the inorganic pigment filler is heavy calcium carbonate, and the usage amount of various raw materials is different, and the specific details are shown in the table 2.
TABLE 2
Example 4
An anti-dewing interior wall latex paint is different from the embodiment 3 in that the inorganic pigment filler is heavy calcium carbonate, the heavy calcium carbonate comprises modified heavy calcium carbonate and ordinary heavy calcium carbonate A, and the mass ratio of the modified heavy calcium carbonate to the ordinary heavy calcium carbonate A is 1:0.2. namely, the usage amount of the modified heavy calcium carbonate is 16.7kg, and the usage amount of the common heavy calcium carbonate A is 3.3kg. The modified heavy calcium carbonate was prepared according to preparation example 1.
Example 5
The anti-dewing interior wall latex paint is different from the embodiment 4 in that the mass ratio of the modified heavy calcium carbonate to the common heavy calcium carbonate A is 1:0.5. namely, the usage amount of the modified heavy calcium carbonate is 13.3kg, and the usage amount of the common heavy calcium carbonate A is 6.7kg.
Example 6
The anti-dewing interior wall latex paint is different from the embodiment 4 in that the mass ratio of the modified heavy calcium carbonate to the common heavy calcium carbonate A is 1:1. namely, the usage amount of the modified heavy calcium carbonate is 10kg, and the usage amount of the common heavy calcium carbonate A is 10kg.
Example 7
The anti-dewing interior wall latex paint is different from the embodiment 4 in that the inorganic pigment and filler is heavy calcium carbonate and diatomite, and the mass ratio of the heavy calcium carbonate to the diatomite is 1:0.3. namely, the amount of heavy calcium carbonate used was 15.4kg, and the amount of diatomaceous earth used was 4.6kg. The usage amount of the modified heavy calcium carbonate is 12.8kg, and the usage amount of the common heavy calcium carbonate A is 2.6kg.
Example 8
The anti-dewing interior wall latex paint is different from the embodiment 7 in that the mass ratio of the heavy calcium carbonate to the diatomite is 1:0.5. namely, the amount of heavy calcium carbonate used was 13.3kg, and the amount of diatomaceous earth used was 6.7kg. The usage amount of the modified heavy calcium carbonate is 11.1kg, and the usage amount of the common heavy calcium carbonate A is 2.2kg.
Example 9
The anti-dewing interior wall latex paint is different from the embodiment 7 in that the mass ratio of the heavy calcium carbonate to the diatomite is 1:1. namely, the amount of heavy calcium carbonate used was 10kg, and the amount of diatomaceous earth used was 10kg. The usage amount of the modified heavy calcium carbonate is 8.3kg, and the usage amount of the common heavy calcium carbonate A is 1.7kg.
Example 10
An anti-dewing interior wall latex paint is different from the embodiment 4 in that the modified heavy calcium carbonate is prepared in the preparation example 2.
Example 11
An anti-dewing interior wall latex paint is different from the embodiment 4 in that the modified heavy calcium carbonate is prepared in the preparation example 3.
Example 12
An anti-dewing interior wall latex paint is different from the embodiment 4 in that the modified heavy calcium carbonate is prepared in the preparation example 4.
Example 13
An anti-dewing interior wall latex paint is different from the embodiment 4 in that the modified heavy calcium carbonate is prepared in the preparation example 5.
Example 14
An anti-dewing interior wall latex paint, different from example 3, in that the rotational speed of step b) was adjusted to 900r/min.
Comparative example
Comparative example 1
An anti-dewing interior wall latex paint is different from example 4 in that the emulsion is replaced with an acrylic emulsion of equal mass.
Comparative example 2
An anti-dewing interior wall latex paint is different from example 4 in that the amount of emulsion used is 10kg, the amount of inorganic pigment filler used is 30kg, and the amount of aerogel dispersion paste used is 25kg.
Comparative example 3
An anti-dewing interior wall latex paint was different from example 3 in that aerogel dispersion paste was not used, the amount of inorganic pigment filler was 30kg, the amount of emulsion was 25kg, and the amount of water was 25.6kg.
Performance test
1. Detecting an object: examples 1 to 14 and comparative examples 1 to 3.
2. Detecting items:
1) The performance was tested according to JG/T24-2018 synthetic resin emulsion sand wall building paint.
2) The properties were tested according to GB/T9266-2009 "measurement of the resistance to washing by architectural coatings".
3) Condensation resistance:
(1) The condensation amount (g) was recorded according to the test performance of HG/T4560-2013, anti-dewing Performance test method for coating.
(2) Mass M at the end of (1) weighing 2 When the dew condensation condition on the surface of the sample is observed by naked eyes, the sample is scored, the score is divided into 5 minutes, and the more serious the dew condensation is, the lower the score is.
4) Flexibility: the performance was measured according to GB/T1731-2020 paint film, putty film flexibility determination method.
The above detection results are shown in Table 3.
TABLE 3-1
TABLE 3-2
TABLE 3-3
As can be seen from comparison of the test data of examples 1-3 and comparative example 3 in Table 3, the dewing phenomenon on the surface of the paint film obtained was severe when the aerogel dispersion paste was not used; after the aerogel dispersion paste is used and the formula system is adjusted, the dew condensation phenomenon is obviously reduced, but the flexibility is poor. As can be seen from comparison of the detection data of examples 1-3 and comparative examples 1-2, the condensation effect and the washing resistance of the paint film are obviously improved by the use of the aerogel under the system of the application.
As can be seen from comparison of the test data of example 3 and example 4 in Table 3, the condensation amount of example 4 is smaller and the flexibility is better than that of example 3. The modified heavy calcium carbonate can be well influenced and matched with the aerogel dispersion paste, and when the specific proportion of the modified heavy calcium carbonate to the common heavy calcium carbonate is further selected to be matched, the formed paint film has good dewing resistance and cracking resistance.
As can be seen from comparison of the test data of examples 4 and 5 and example 6 in table 3, when the inorganic pigment filler is selected as the modified heavy calcium carbonate and the normal heavy calcium carbonate, the use ratio between the two is further limited, and the stacking effect is further improved, thereby further improving the dew condensation resistance and the cracking resistance.
As can be seen from comparison of the detection data of the embodiment 4 and the embodiment 7-9 in the table 3, the further selection of the inorganic pigment and filler with specific types and proportions can further improve the anti-condensation and anti-cracking effects of the paint film.
As can be seen from comparison of the test data of examples 4 and 10 and examples 11-13 in Table 3, the modified heavy calcium carbonate prepared in examples 4 and 10 has significantly better anti-dewing and anti-cracking effects in the paint than those of examples 11-13. It is explained that the modified heavy calcium carbonate needs to be soaked by specific raw materials and prepared under specific conditions to be matched with a coating system more ideally.
As can be seen from comparison of the test data of example 3 and example 14 in Table 3, further limiting the preparation conditions of the stirred inorganic pigment filler is advantageous in providing good dispersion thereof, and improving the properties of the coating to a better extent.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (8)
1. The anti-dewing interior wall latex paint is characterized by comprising the following raw materials in percentage by mass: 0.3 to 0.5 percent of cellulose, 0.5 to 0.8 percent of dispersing agent, 0.1 to 0.3 percent of wetting agent, 0.2 to 0.5 percent of defoamer, 12 to 25 percent of titanium pigment, 15 to 25 percent of inorganic pigment and filler, 0.2 to 0.5 percent of bactericide, 0.9 to 1.8 percent of auxiliary agent, 15 to 25 percent of emulsion, 0.5 to 1.5 percent of film forming auxiliary agent, 0.2 to 0.5 percent of thickening agent, 15 to 30 percent of aerogel dispersion paste and water to 100 percent;
the emulsion is one or a mixture of a plurality of styrene-acrylic emulsion, pure acrylic emulsion and silicone-acrylic emulsion;
the inorganic pigment filler is at least heavy calcium carbonate;
the heavy calcium carbonate is at least modified heavy calcium carbonate;
the modified heavy calcium carbonate comprises the following raw materials: the weight ratio of the common heavy calcium carbonate B to the water to the sodium dodecyl polyoxyethylene ether sulfate to the sodium dodecyl benzene sulfonate is 1: (2-5): (0.002-0.004): (0.003-0.006);
the preparation method of the modified heavy calcium carbonate comprises the following steps:
adding the common heavy calcium carbonate B into water, and uniformly mixing;
continuously adding sodium dodecyl polyoxyethylene ether sulfate and sodium dodecyl benzene sulfonate, and uniformly mixing;
standing for 12-24h, and performing suction filtration and drying to obtain a material to be used;
calcining the material to be used for 1-2h at 650-750 ℃, and reacting for 1-3h at a temperature; obtaining the modified heavy calcium carbonate.
2. The anti-dewing interior wall latex paint as defined in claim 1 wherein: the heavy calcium carbonate is a mixture of modified heavy calcium carbonate and ordinary heavy calcium carbonate A.
3. The anti-dewing interior wall latex paint as defined in claim 2 wherein: the mass ratio of the modified heavy calcium carbonate to the common heavy calcium carbonate A is 1: (0.2-0.5).
4. The anti-dewing interior wall latex paint according to claim 1 or 3, wherein: the inorganic pigment filler is mixed with one or more of kaolin, talcum powder, diatomite, mica powder and silicon-calcium powder.
5. The anti-dewing interior wall latex paint as defined in claim 4 wherein: the inorganic pigment filler is heavy calcium carbonate and diatomite, and the mass ratio of the heavy calcium carbonate to the diatomite is 1: (0.3-0.5).
6. The anti-dewing interior wall latex paint as defined in claim 1 wherein: the thickener is one or two of alkali swelling thickener and associative polyurethane thickener.
7. A method for preparing the anti-dewing interior wall latex paint based on any one of claims 1 to 6, comprising the following steps:
adding a dispersing agent, a defoaming agent, a bactericide, an auxiliary agent and cellulose into water, and uniformly dispersing;
continuously adding titanium dioxide, a film forming additive and inorganic pigment and filler, and uniformly dispersing;
continuing to add the emulsion and the aerogel dispersion paste, and uniformly dispersing;
continuously adding a thickening agent, and uniformly mixing; obtaining the finished product.
8. The method for preparing the anti-dewing interior wall latex paint according to claim 7, wherein the method comprises the following steps: when the titanium dioxide, the film forming additive and the inorganic pigment filler are added and uniformly dispersed, the rotating speed is regulated to 1500-1800r/min; and the rotation speed is regulated to 500-900r/min when the rest is dispersed.
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| CN113354992A (en) * | 2021-06-18 | 2021-09-07 | 杭州和韵科技有限公司 | Aerogel thermal insulation water-based paint and preparation method and application thereof |
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| CN113354992A (en) * | 2021-06-18 | 2021-09-07 | 杭州和韵科技有限公司 | Aerogel thermal insulation water-based paint and preparation method and application thereof |
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