CN104591598B - A kind of true mineral varnish and preparation method thereof, construction method - Google Patents

Abstract

The invention provides a real stone paint, which comprises the following raw material components in parts by weight: 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of a dispersant, and 1 part by weight of a wetting agent. ‑3 parts by weight, 4‑8 parts by weight of defoamer, 2‑3 parts by weight of preservative, 100‑150 parts by weight of emulsion, 5‑12 parts by weight of film-forming aid, 1‑3 parts by weight of pH regulator, antifreeze 5-20 parts by weight, and 400-900 parts by weight of the colored sand component, which contains two or more natural stone powders with similar colors. The present invention further provides a preparation method of the above real stone paint. Due to the adoption of the above technical scheme, the embodiment of the present invention can balance the color difference of various natural stone powders by mixing natural stone powders with similar colors in the raw materials. Under the powder phase contrast, the color difference of the real stone paint products between batches is very small, and the color difference change of the real stone paint products is well controlled.

Description

A kind of genuine stone paint and its preparation method and construction method

technical field

The invention relates to an architectural coating, in particular to a real stone paint, a preparation method and a construction method thereof.

Background technique

Real stone paint is mainly made of high molecular polymer, natural colored stone sand and related additives. After drying and curing, it is as hard as stone and looks like natural real stone. Real stone paint is widely used, and has high hardness, good weather resistance, fire resistance, acid and alkali resistance, pollution resistance, non-toxic, tasteless and other characteristics. Compared with natural stone, it has the advantages of good decorative effect, low engineering cost and simple construction. At the same time, real stone paint can also be constructed on many parts where stone cannot be constructed (such as building columns, corners, etc.), without leaving stubble. Seams make the building more stylish and gorgeous as a whole.

In the prior art, real stone paint is a kind of natural colored sand with various colors and particle gradations, using emulsion as the base material, and supplemented with various additives to prepare high-simulation natural stone paint. Yet existing real stone paint often has following defective:

First of all, natural colored sand is derived from natural stone, which is obtained through crushing, grinding, and screening. It is difficult to control the color of the raw material (natural colored sand), and it is impossible to guarantee the color consistency of each batch of colored sand. If the formula is not adjusted between batches of production, the real stone paint products will have a very large color difference between different batches, and then there will be a large color difference on the real stone paint wall during the construction process, resulting in engineering quality accidents .

Secondly, under the normal construction environment, the existing real stone paint dries too quickly, and the drying time is generally 2 hours. There is a certain time interval between the upper and lower construction of the wall, especially for taller high-rise buildings, the construction of high-rise walls and low-rise walls. If the interval exceeds two hours, the upper and lower colors of the wall are likely to be inconsistent or there is a large color difference, and once the color difference occurs, it is difficult to repair, resulting in engineering quality accidents and huge economic losses.

The existing real stone paint has poor stain resistance. After the real stone paint is sprayed, the surface of the paint film is concave-convex, which is easy to be contaminated with dust, accumulates stains, and is not easy to clean.

In addition, because the real stone paint dries too fast, it is easy to tear off the masking paper when it is constructed on the brick-type real stone paint wall, or even cannot be torn off; Very fast, it is easy to crack, fall off, etc., so the existing real stone paint is not suitable for construction in harsh environments of dryness, high temperature, and strong wind.

Contents of the invention

The technical problem to be solved by the present invention is that it is difficult to ensure the color consistency of each batch of natural colored sand in the prior art, which leads to a very large color difference between different batches of real stone paint products, and due to the up and down construction of the wall If the interval is too long, the wall is prone to defects such as inconsistency of upper and lower colors or large color difference.

The second technical problem to be solved by the present invention is that the real stone paint in the prior art is not resistant to contamination and is prone to cracking and falling off when it is constructed under harsh conditions.

In order to solve the above technical problems, the object of the present invention is to provide a real stone paint, which comprises the following raw material components in parts by weight: 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of dispersant Parts by weight, 1-3 parts by weight of wetting agent, 4-8 parts by weight of defoamer, 2-3 parts by weight of preservative, 100-150 parts by weight of emulsion, 5-12 parts by weight of film-forming aid, pH regulator 1 - 3 parts by weight, 5-20 parts by weight of antifreeze, 400-900 parts by weight of the colored sand component, which contains two or more natural stone powders with similar colors.

Preferably, the colored sand component contains 2-6 natural stone powders with similar colors.

Preferably, the particle size of the natural stone powder includes 20-40 mesh, 40-80 mesh and/or 80-120 mesh.

Preferably, 0-100 parts by weight of heavy calcium carbonate and/or 0-1 parts by weight of titanium dioxide are also included.

Preferably, the emulsion is one or more of pure acrylic, styrene-acrylic, and silicon-acrylic, and the glass transition temperature of the emulsion is above 30°C.

Preferably, the emulsion is pure acrylic emulsion, styrene-acrylic emulsion or silicon-acrylic emulsion.

Preferably, 0-10 parts by weight of a thickener is also included.

Preferably, the thickener is hydroxyethyl cellulose, hydroxyethyl methyl cellulose or ethyl hydroxyethyl cellulose.

Preferably, the wetting agent is a nonionic wetting agent.

Preferably, the dispersant is sodium acrylate or ammonium acrylate; the defoamer is mineral oil or silicone; the preservative is 1,2-benzisothiazolin-3-one (BIT ) or 5-chloro-2-methyl-4-isothiazolin-3-one/2-methyl-4-isothiazolin-3-one (CMIT/MIT); the coalescent is 2, 2,4-trimethyl-1,3-pentanediol monoisobutyrate or dodecyl alcohol ester; the pH regulator is organic amine or sodium hydroxide.

The present application also provides a kind of preparation method of above-mentioned genuine stone paint, it is characterized in that, comprises the following steps:

(1) Weigh 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of dispersant, 1-3 parts by weight of wetting agent, 3-5 parts by weight of defoamer, preservative 2-3 parts by weight, fully stirred to obtain the mixture;

(2) Weigh 100-150 parts of emulsion, 5-12 parts by weight of film-forming aid, 1-3 parts by weight of pH regulator, 5-20 parts by weight of antifreeze, and 400 parts of natural stone powder of two or more similar colors -900 parts by weight, 1-3 parts of defoamer, and added to the mixture obtained in the step (1), fully stirred to obtain real stone paint.

Preferably, the step (2) further includes: before adding the emulsion, film-forming aid, pH regulator, antifreeze agent, natural stone powder and defoamer to the mixture obtained in the step (1), Add 0-100 parts by weight of heavy calcium carbonate and/or 0-1 parts by weight of titanium dioxide to the mixture obtained in the step (1), and stir and disperse at a high speed to make the weight of the heavy calcium carbonate and/or titanium dioxide The fineness reaches below 100 microns.

Preferably, the step (2) further includes adding 0-10 parts by weight of a thickener to the mixture obtained in the step (1) under low-speed stirring.

The present application also provides a construction method of the above-mentioned real stone paint, which is characterized in that, comprising the following steps:

1) Grassroots treatment

First remove the surface attachments on the wall, fill the large concave and convex parts with cement slurry, and then polish them to make them smooth, and repair small cracks and holes with polymer cement-based putty;

2) Roller primer

Roller coat the primer 1-2 times on the wall and wait for it to dry;

3) Spray real stone paint

After the primer is dry, draw an ink line on the surface of the primer, and paste masking paper; then spray real stone paint 1-2 times, each time at an interval of 24 hours, after spraying, tear off the masking paper, and clean up the joints; For the spraying of real stone paint, the pressure of the spray gun is 0.4Kg/cm ² -0.6Kg/cm ² , the diameter of the nozzle is 3cm-10cm, the vertical distance between the nozzle and the wall is 40-50cm; the speed of the spray gun is 1- 3m/s;

4) Spray or roller finish coating

Spray or roll the finish paint 1-2 times. For the spray finish paint, the pressure of the spray gun is 4Kg/cm ² -6Kg/cm ² , the diameter of the nozzle is 2cm-3cm, the spray distance is 50cm-60cm, and the spray gun runs The speed is 1-5m/s; for the roller coating topcoat, the coating amount is 0.15Kg/m ² -0.20Kg/m ² /pass.

Compared with the prior art, the technical solution of the present invention has the following advantages:

(1) The real stone paint of the present invention includes the following raw material components in parts by weight: 90-130 parts of water, 2-5 parts of hydroxyethyl cellulose, 2-5 parts of dispersant, 1-3 parts of wetting agent, disinfectant 4-8 parts of foaming agent, 2-3 parts of preservative, 100-150 parts of emulsion, 5-12 parts of film-forming aid, 1-3 parts of pH regulator, 5-20 parts of antifreeze, 400- 900 parts, the colored sand component contains two or more natural stone powders with similar colors. Due to the adoption of the above technical scheme, the embodiment of the present invention can balance the color difference of various natural stone powders by mixing natural stone powders with similar colors in the raw materials. Under the powder phase contrast, the color difference of the real stone paint products between batches is very small, and the color difference change of the real stone paint products is well controlled.

Using the ratio of various additives in the above formula, especially 2-5 parts of hydroxyethyl cellulose, prolongs the opening time of the paint film and makes the real stone paint film have a longer surface drying time. , the surface drying time is 4-6 hours, which is not only easy to construct, saves materials, but also can well ensure the consistency of wall color, and the color difference between the upper and lower walls is not easy to appear, especially suitable for the construction of large gate walls in high-rise buildings .

Since the drying time of the real stone paint is prolonged, it will not be difficult to tear off the masking paper during construction. It is not easy to crack and fall off the real stone paint under harsh conditions.

At the same time, since the wetting agent is added to the above formula, the surface tension or interfacial tension of the solid material can be reduced, so that the solid material can be more easily wetted by water, and the solid material can be better dispersed in water.

In addition, on the one hand, the real stone paint of the present invention emits almost zero pollutants during the production process; on the other hand, it reduces the consumption of stone materials, which is only about 10% of that of the boards, greatly reducing the environmental pressure.

(2) The real stone paint of the present invention adopts natural stone powders with different particle sizes and proportions, which can not only improve the hardness of the real stone paint layer after construction, but also further balance the color difference between various natural stone powders, so that each batch The color difference of real stone paint products is further reduced.

(3) The real stone paint of the present invention also includes 0-1 parts by weight of titanium dioxide and/or 0-100 parts by weight of heavy calcium carbonate, because titanium dioxide has very good hiding power, and heavy calcium carbonate has a strong Therefore, by flexibly adjusting the amount of titanium dioxide and ground calcium carbonate, the real stone paint film can achieve the required hiding power or transparency, which helps to reduce the thickness of the real stone paint film during construction. The thickness can be determined by 5mm is reduced to 2-3mm, thereby reducing the materials used for real stone paint and greatly reducing the project cost.

(4) The real stone paint of the present invention, due to the use of 10-15 parts of an emulsion with a higher glass transition temperature (such as Dow Chemical DC-420, Baolijia BLJ-996HD, Badford RS-992, etc.), enhances the paint film. The strength and water whitening resistance make it difficult for dust and stains to adhere to the surface of the paint film. Even if there is adhesion, it can be kept clean under the washing of rainwater, thus enhancing the stain resistance of real stone paint.

In addition, the real stone paint of the present invention can adopt the technical scheme of spraying or roller coating the finish paint on the real stone paint layer during construction, and the finish paint can play the role of a finish protective layer, which enhances the water resistance of the real stone paint , water whitening resistance, weather resistance, stain resistance, and also improves the hardness and smoothness of the surface. Preferably, the finish paint adopts a high glass transition temperature and high weather resistance emulsion, which can not only enhance the strength of the paint film, but also make the surface of the finish paint layer very smooth, difficult to accumulate dust, and easy to clean. In terms of water whitening resistance and weather resistance, it plays a protective role in the real stone paint layer.

detailed description

The following examples will be used to further illustrate the present invention, but the following examples are only examples and not intended to limit the present invention.

Example 1

(1) First weigh 100 parts by weight of water, 4 parts by weight of hydroxyethyl cellulose (model: HBR-250, manufacturer Aqualon, viscosity is 30000CP, the same below), dispersant (sodium acrylic acid, model: Kuaiyi , manufacturer: Dow Chemical) 3 parts by weight, wetting agent (non-ionic, model: X-405, manufacturer: Dow Chemical) 3 parts by weight, defoamer (model: NXZ, manufacturer: Nuopu Branch company) 4 parts by weight, preservative (1,2-benzisothiazolin-3-one (BIT), model: EG-CT, manufacturer: Klein company) 2 parts by weight, and then hydroxyethyl cellulose Slowly add the pigment, dispersant, wetting agent, defoamer and preservative into the water under low-speed stirring, and stir well to obtain a mixture.

(2) Select a yellow standard sample, and then select two yellow natural stone powders with similar colors according to the color of the standard sample, one natural stone powder cream yellow 40-80 mesh, 200 parts by weight, and the other natural stone powder chrysanthemum yellow similar to it 80-120 mesh, 450 parts by weight, and then take 120 parts by weight of pure acrylic emulsion (model: RS-706, manufacturer: Bardford, glass transition temperature is 30 ℃), film-forming aid (model: Texanol , manufacturer: Eastman Company) 12 parts by weight, pH regulator (model: AMP-95, manufacturer: Dow Chemical) 2 parts by weight, antifreeze agent (model: ethylene glycol, manufacturer: Yanshan Petrochemical) 10 Parts by weight, 1 part by weight of defoamer, and emulsion, film-forming aid, pH regulator, antifreeze, natural stone powder and defoamer are added to the mixture obtained in step (1), fully stirred to obtain real stone paint A .

(3) Using the above two yellow natural stone powders with similar colors, prepare different batches of real stone paint according to steps (1) and (2) for many times, between the real stone paint and real stone paint A, and between different batches The color difference between real stone paints is very small, and the colors are completely consistent when observed with the naked eye.

Example 2

(1) First weigh 90 parts by weight of water, 2 parts by weight of hydroxyethyl cellulose (model: HBR-250, manufactured by Aqualon, with a viscosity of 30000cp), dispersant (ammonium acrylate, model: Kuaiyi, manufactured by : Dow Chemical) 5 parts by weight, wetting agent (non-ionic, model: PE-100, manufacturer: Haichuan Technology) 2 parts by weight, defoamer (model: NXZ, manufacturer: Nopco) 3 Parts by weight, preservative (1,2-benzisothiazolin-3-one (BIT), model: EG-CT, manufacturer: Klein Company) 3 parts by weight, then hydroxyethyl cellulose, dispersant , wetting agent, defoamer and preservative are slowly added to the water under low-speed stirring, and the mixture is obtained after fully stirring.

(2) Add 1 part by weight of titanium dioxide (model: rutile type, commercially available) to the mixture obtained in step (1) under high-speed stirring. Since the fineness of titanium dioxide is relatively small and the surface energy is relatively high, it is not easy to disperse Therefore, it is necessary to stir at a high speed for 10 minutes, measure the fineness of the titanium dioxide, stop stirring when the fineness is less than 100 microns, and obtain a mixture containing titanium dioxide.

(3) Select a white standard sample, and then select three natural stone powders according to the color of the standard sample. The specific data are shown in Table 1, and then weigh the pure acrylic emulsion (model: RS-706, manufacturer: Bardford Company , glass transition temperature is 30°C) 150 parts by weight, film-forming aid (lauryl alcohol ester, Qida Chemical) 10 parts by weight, pH regulator (AMP-95, Angus Company) 1 part by weight, antifreeze ( Ethylene glycol, Yanshan Petrochemical) 20 parts by weight, defoamer (NXZ, Nopco company) 3 parts by weight, then pure acrylic emulsion, film-forming aid, pH regulator, antifreeze, natural stone powder and defoamer Add it to the mixture obtained in step (2), and stir well to obtain real stone paint B.

(4) Using three natural stone powder raw materials with similar colors shown in Table 1, prepare different batches of real stone paint according to steps (1)-(3) multiple times, between the real stone paint and real stone paint B, and between different batches The color difference between real stone paints is very small, and the colors are completely consistent when observed with the naked eye.

Table 1

natural stone powder 1 2 3 parts by weight 200 350-400 40-60 Granularity (mesh) 40-80 80-120 20-40 model, source snow white snow white snow white

Example 3

(1) First weigh 130 parts by weight of water, 5 parts by weight of hydroxyethyl cellulose (model: HBR-250, manufacturer Aqualon, viscosity is 30000cp), dispersant (ammonium acrylate, model: Quick Easy, manufacturer : Dow Chemical) 2 parts by weight, wetting agent (non-ionic, model: X-405, manufacturer: Dow Chemical) 1 part by weight, defoamer (model: NXZ, manufacturer: Nopco) 3 parts by weight, preservative (1,2-benzisothiazolin-3-one (BIT), model: EG-CT, manufacturer: Klein Company) 2 parts by weight, then hydroxyethyl cellulose, dispersed The agent, wetting agent, defoamer and preservative are slowly added to the water under low-speed stirring, and the mixture is obtained after fully stirring.

(2) Add 10 parts by weight of heavy calcium carbonate to the mixture obtained in step (1) under high-speed stirring. Because the fineness of heavy calcium carbonate is relatively small, the surface energy is relatively high, and it is not easy to disperse, so it must be stirred at high speed 10 minutes, measure the fineness of heavy calcium carbonate, stop stirring when fineness is less than 100 microns, obtain the mixture containing heavy calcium carbonate.

(3) Select a gray standard sample, and then select four kinds of natural stone powder according to the color of the standard sample. The specific data are shown in Table 2, and then weigh the styrene-acrylic emulsion (glass transition temperature is 30°C, model: RS-992, Manufacturer: Bardford Company) 100 parts by weight, film-forming aid (lauryl alcohol ester, Qida Chemical) 5 parts by weight, pH regulator (AMP-95, Angus Company) 3 parts by weight, antifreeze ( Ethylene glycol, Yanshan Petrochemical) 5 parts by weight, defoamer (NXZ, Nopco) 1 part by weight, thickener (SCT-275, Dow Chemical) 1 part by weight. Then add styrene-acrylic emulsion, film-forming aid, pH regulator, antifreeze, natural stone powder, defoamer and thickener to the mixture obtained in step (2), and stir well to obtain real stone paint C.

(4) Using four different batches of natural stone powder raw materials with similar colors shown in Table 2, according to steps (1)-(3) to prepare different batches of real stone paint for many times, the difference between the real stone paint and the real stone paint C , and the color difference between different batches of real stone paint is very small, and the colors are completely consistent when observed with the naked eye.

Table 2

natural stone powder 1 2 3 4 parts by weight 50-100 100-200 200-300 50-80 Granularity (mesh) 20-40 80-120 80-120 20-40 model, source gray jade gray jade blue gray blue gray

Example 4

(1) First weigh 120 parts by weight of water, 4 parts by weight of hydroxyethyl cellulose (model: HBR-250, manufactured by Aqualon, with a viscosity of 30000cp), dispersant (ammonium acrylate, model: Kuaiyi, manufactured by : Dow Chemical) 3 parts by weight, wetting agent (non-ionic, model: X-405, manufacturer: Dow Chemical) 2 parts by weight, defoamer (model: NXZ, manufacturer: Nopco) 4 parts by weight, preservative (1,2-benzisothiazolin-3-one (BIT), model: EG-CT, manufacturer: Klein Company) 2 parts by weight, then hydroxyethyl cellulose, dispersed The agent, wetting agent, defoamer and preservative are slowly added to the water under low-speed stirring, and the mixture is obtained after fully stirring.

(2) Add 50 parts by weight of heavy calcium carbonate to the mixture obtained in step (1) under high-speed stirring, stir at high speed for 10 minutes, measure the fineness of heavy calcium carbonate, stop stirring when the fineness is less than 100 microns, and obtain Mixture containing ground calcium carbonate.

(3) Select a light yellow standard sample, and then select six natural stone powders with similar colors according to the color of the standard sample. The specific data are shown in Table 3; -996HD, manufacturer: Baolijia Company) 150 parts by weight, film-forming aid (lauryl alcohol ester, Qida Chemical) 10 parts by weight, pH regulator (AMP-95, Angus Company) 2 parts by weight, antifreeze Agent (ethylene glycol, Yanshan Petrochemical) 10 parts by weight, defoamer (NXZ, Nopco) 1-3 parts, thickener (SCT-275, Dow Chemical) 5 parts by weight. Then add silicone-acrylic emulsion, film-forming aid, pH regulator, antifreeze, natural stone powder, defoamer and thickener to the mixture obtained in step (2), and stir well to obtain real stone paint D.

(4) Using six different batches of natural stone powder raw materials with similar colors shown in Table 3, follow steps (1)-(3) to prepare different batches of real stone paint multiple times, and the difference between the real stone paint and the real stone paint D , and the color difference between different batches of real stone paint is very small, and the colors are completely consistent when observed with the naked eye.

table 3

natural stone powder 1 2 3 4 5 6 parts by weight 50-100 150-200 100-150 20-30 80-100 80-100 Granularity (mesh) 80-120 80-120 80-120 40-80 40-80 40-80

model, source snow white Chrysanthemum yellow milk yellow snow white Chrysanthemum yellow milk yellow

Example 5

(1) First weigh 90 parts by weight of water, 2 parts by weight of hydroxyethyl cellulose (model: HBR-250, manufactured by Aqualon, with a viscosity of 30000cp), dispersant (ammonium acrylate, model: Kuaiyi, manufactured by : Dow Chemical) 5 parts by weight, wetting agent (non-ionic, model: X-405, manufacturer: Dow Chemical) 3 parts by weight, defoamer (model: NXZ, manufacturer: Nopco) 3 parts by weight, preservative (1,2-benzisothiazolin-3-one (BIT), model: EG-CT, manufacturer: Klein Company) 2 parts by weight, then hydroxyethyl cellulose, dispersed The agent, wetting agent, defoamer and preservative are slowly added to the water under low-speed stirring, and the mixture is obtained after fully stirring.

(2) Select a reddish-brown standard sample, and then select 5 natural stone powders with similar colors according to the color of the standard sample. The specific data are shown in Table 4; -992, manufacturer: Bardford Company) 120 parts by weight, film-forming aid (lauryl alcohol ester, Qida Chemical) 6 parts by weight, pH regulator (AMP-95, Angus Company) 2 parts by weight, Antifreeze (ethylene glycol, Yanshan Petrochemical) 10 parts by weight, defoamer (NXZ, Nopco) 5 parts, thickener (SCT-275, Dow Chemical) 5-10 parts by weight. Add styrene-acrylic emulsion, film-forming aid, pH regulator, antifreeze, natural stone powder, defoamer and thickener to the mixture obtained in step (1), and stir well to obtain real stone paint E.

(3) Using six different batches of natural stone powder raw materials with similar colors shown in Table 4, according to steps (1) and (2) to prepare different batches of real stone paint for many times, the difference between the real stone paint and real stone paint E The color difference between different batches of real stone paint is very small, and the color is completely consistent when observed with the naked eye.

Table 4

natural stone powder 1 2 3 4 5 6 parts by weight 200-300 200-300 20-50 130-150 20-30 20-70

Granularity (mesh) 40-80 80-120 180-200 80-120 40-80 20-40 model, source coffee red chicken blood red Chrysanthemum yellow coffee red China black coffee red

Example 6

Construction conditions of this embodiment: indoors, the ambient temperature is 20°C.

1) Grassroots treatment

Clean up the surface attachments on the wall (such as dust, release agent, oil stains), and then fill and polish the large concave and convex parts with cement mortar. If there are small cracks and holes, polymer cement can be used base putty repair. If there is an old coating on the surface of the substrate, remove the loose, crusted, and brittle old coating first, and then sand the firmly adhered old coating with sandpaper; if there is a non-water-resistant coating on the surface of the substrate, you can root it out.

2) Roller primer

Roll the primer (anti-alkali primer) on the wall for 1-2 times and wait for it to dry;

3) Spray or scrape real stone paint

After the primer is dry, spray the real stone paint A of Example 1 and wait for drying; for spraying real stone paint, the pressure of the spray gun is 0.4-0.6Kg/cm ² , the diameter of the nozzle is 3cm-10cm, and the spray distance is 40-50cm. The running speed of the spray gun is 1-3m/s; for the spraying of real stone paint, the coating amount is 3-5Kg/m ² /pass.

During the construction process, the real stone paint A prolongs the drying time and greatly reduces or eliminates the color difference caused by the construction. Observed with the naked eye, the upper and lower colors of the wall are very uniform; and the textured paper can also be easily torn off, without If the masking paper is difficult to tear, the drying time of real stone paint is 2-4 hours.

4) Spray or roller finish coating

After the real stone paint is dry, spray or roller coat the finish paint (high weather resistance finish paint) 1-2 times. For the spray finish paint, the pressure of the spray gun is 4Kg/cm2, the spray distance is 50-60cm, and the spray gun runs The speed is 1-5mm/s; for the roller coating finish coating, the coating amount is 0.15-0.20Kg/m2/pass.

In this embodiment, the real stone paint contains pure acrylic emulsion with a high glass transition temperature, so that the wall surface of the real stone paint has stain resistance, and dust and stains are difficult to adhere to the surface of the paint film. Even if there is dust attached, it can be kept clean by washing with water.

Example 7

The construction conditions of this embodiment: the ambient temperature is about 35°C, the weather is dry and there is strong wind.

1) Grassroots treatment

Clean up the surface attachments on the wall (such as dust, release agent, oil stains), and then fill and polish the large concave and convex parts with cement mortar. If there are small cracks and holes, polymer cement can be used base putty repair. If there is an old coating on the surface of the substrate, remove the loose, crusted, and brittle old coating first, and then sand the firmly adhered old coating with sandpaper; if there is a non-water-resistant coating on the surface of the substrate, you can root it out.

2) Roller primer

Roll the primer (anti-alkali primer) on the wall twice, and the thickness of the paint film should be consistent. Wait for drying; for split joint style construction, apply penetrating black primer or black sand wall primer on the surface of the primer according to the requirements of the pattern design to form the required ink line, and then seal the masking paper.

3) Spray real stone paint

After the primer is dry, choose the real stone paint A of Example 1 to spray, and spray it 1-2 times according to the needs, and wait for drying; for spraying real stone paint, the pressure of the spray gun is 0.4-0.6Kg/cm ² , and the spray distance is 40 -50cm, the running speed of the spray gun is 1-3mm/s; the dosage is 3-4Kg/m ² /pass. After spraying the real stone paint, tear off the masking paper, and then clean up the joints. If there is impregnation at the edge seams, use the same color paint as the primer for painting.

During the construction process, the real stone paint A greatly reduces or eliminates the color difference caused by the construction due to the prolonged drying time. Observed with the naked eye, the upper and lower colors of the wall are very uniform; and under the harsh conditions of dryness, high temperature and strong wind During the construction, the real stone paint did not crack or fall off, and the textured paper can be easily torn off, and the textured paper was not difficult to tear off. The drying time of the real stone paint is 2-3 hours.

4) Spray or roller finish coating

After the real stone paint is dry, spray or roll the finish paint (high weather resistance finish paint) 1-2 times. For the spray finish paint, the pressure of the spray gun is 4Kg/cm ² , and the spray distance is 50-60cm. The running speed is 1-5mm/s; for the roller coating finish coating, the coating amount is 0.20Kg/m ² /pass.

In this embodiment, the real stone paint contains pure acrylic emulsion with a higher glass transition temperature, and the overcoat uses an emulsion with a high glass transition temperature and high weather resistance, which further enhances the stain resistance of the real stone paint wall, and dust and stains are difficult to adhere to. On the surface of the paint film, even if there is dust attached, it can be kept clean by washing with water.

Example 8

The method of this implementation is the same as the method in Example 7, except that the real stone paint B, C, D, and E respectively replace the real stone paint A as construction materials, thereby making four kinds of non-real stone paint wall surfaces.

During the construction process, the real stone paint film B, C, D, E prolongs the drying time, greatly reduces or eliminates the color difference of the real stone paint film during the construction process, and the upper and lower colors of the wall are very uniform when observed with the naked eye; During the construction under the harsh conditions of dryness, high temperature and strong wind, the real stone paint has no cracking or falling off, and the masking paper can be easily torn off, and there is no difficult tearing of the masking paper. The dryness of the real stone paint film The time is 2, 4, 3, 4 hours respectively.

Since the real stone paint B contains titanium dioxide, which improves the hiding power of the real stone paint, it only needs to spray a 2mm real stone paint film to completely cover the primer and achieve a very good covering effect.

Because the real stone paint C and D contain heavy calcium carbonate, which improves the transparency of the real stone paint, only need to spray 3mm real stone paint film to achieve the required very good transparent effect.

Comparative example 1

The method of this comparative example is the same as that of Example 1, the difference being that only the natural stone powder of a single color is used to replace the two natural stone powders in Example 1.

Using a single color of natural stone powder to prepare different batches of real stone paint for many times, the prepared real stone paint has a very large color difference between different batches. Observed with the naked eye, there are obvious differences in the color of the real stone paint.

Comparative example 2

The method of this comparative example is the same as that of embodiment 2, the difference is: just replace three kinds of natural stone powders in embodiment 2 with the natural stone powder of single color.

Using a single color of natural stone powder to prepare different batches of real stone paint for many times, the prepared real stone paint has a very large color difference between different batches. Observed with the naked eye, there are obvious differences in the color of the real stone paint.

Comparative example 3

The method of this comparative example is the same as that of Example 5, the difference is that only the natural stone powder of a single color is used to replace six kinds of natural stone powders in Example 5.

Using a single color of natural stone powder to prepare different batches of real stone paint for many times, the prepared real stone paint has a very large color difference between different batches. Observed with the naked eye, there are obvious differences in the color of the real stone paint.

In summary, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (10)

1. A real stone paint, characterized in that it comprises the following raw material components in parts by weight: 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of dispersant, wetting 1-3 parts by weight of agent, 4-8 parts by weight of antifoaming agent, 2-3 parts by weight of preservative, 100-150 parts by weight of emulsion, 5-12 parts by weight of film-forming aid, 1-3 parts by weight of pH regulator, The antifreeze agent is 5-20 parts by weight, and the colored sand component is 400-900 parts by weight. The colored sand component contains two or more natural stone powders with similar colors. 2. The genuine stone paint according to claim 1, characterized in that, the colored sand component comprises 2-6 natural stone powders with similar colors. 3. The real stone paint according to claim 1 or 2, characterized in that the particle size of the natural stone powder includes 20-40 mesh, 40-80 mesh and/or 80-120 mesh. 4. The real stone paint according to claim 1 or 2, further comprising 0-100 parts by weight of ground calcium carbonate and/or 0-1 parts by weight of titanium dioxide. 5. The real stone paint according to claim 1 or 2, characterized in that, the emulsion is one or more of pure acrylic emulsion, styrene-acrylic emulsion and silicon-acrylic emulsion, and the glass transition temperature of the emulsion is 30 ℃ or more. 6. The real stone paint according to claim 1 or 2, characterized in that, the wetting agent is a nonionic wetting agent. 7. according to claim 1 and 2 described genuine stone paints, it is characterized in that, described dispersant is acrylic acid sodium salt or acrylic acid ammonium salt; Described defoamer is mineral oils or organosilicon; Described preservative is 1,2-benzisothiazolin-3-one (BIT) or 5-chloro-2-methyl-4-isothiazolin-3-one/2-methyl-4-isothiazolin-3-one (CMIT/MIT); The film-forming aid is 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate or dodecyl alcohol ester; The pH regulator is an organic amine or sodium hydroxide. 8. a preparation method according to any one of claim 1-3 or 5,6,7, is characterized in that, comprises the following steps: (1) Weigh 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of dispersant, 1-3 parts by weight of wetting agent, 3-5 parts by weight of defoamer, preservative 2-3 parts by weight, fully stirred to obtain the mixture; (2) Weigh 100-150 parts of emulsion, 5-12 parts by weight of film-forming aid, 1-3 parts by weight of pH regulator, 5-20 parts by weight of antifreeze, and 400 parts of natural stone powder of two or more similar colors - 900 parts by weight, 1-3 parts of defoamer, and added to the mixture obtained in the step (1), fully stirred to obtain a real stone paint. 9. a preparation method of genuine stone paint according to claim 4, is characterized in that, comprises the following steps: (1) Weigh 90-130 parts by weight of water, 2-5 parts by weight of hydroxyethyl cellulose, 2-5 parts by weight of dispersant, 1-3 parts by weight of wetting agent, 3-5 parts by weight of defoamer, preservative 2-3 parts by weight, fully stirred to obtain a mixture; (2) Add the ground calcium carbonate of 0-100 weight part and/or the titanium dioxide of 0-1 weight part in the mixture that described step (1) obtains, and high-speed stirring disperses and makes described ground calcium carbonate and/or Or the fineness of titanium dioxide reaches below 100 microns; (3) Weigh 100-150 parts of emulsion, 5-12 parts by weight of film-forming aid, 1-3 parts by weight of pH regulator, 5-20 parts by weight of antifreeze, and 400 parts of natural stone powder of two or more similar colors -900 parts by weight, 1-3 parts of defoamer, and added to the mixture obtained in the step (2), fully stirred to obtain real stone paint. 10. A construction method according to any one of claims 1-7, characterized in that, comprising the following steps: 1) Basic treatment First remove the surface attachments on the wall, fill the large concave and convex parts with cement slurry, and then polish them to make them smooth, and repair small cracks and holes with polymer cement-based putty; 2) Roller primer Roller coat the primer 1-2 times on the wall and wait for it to dry; 3) Spray real stone paint After the primer is dry, draw an ink line on the surface of the primer, and paste masking paper; then spray real stone paint 1-2 times, each time at an interval of 24 hours, after spraying, tear off the masking paper, and clean up the joints; For the spraying of real stone paint, the pressure of the spray gun is 0.4Kg/cm2-0.6Kg/cm2, the diameter of the nozzle is 3cm-10cm, and the vertical distance between the nozzle and the wall is 40-50cm; the speed of the spray gun is 1-3m/ s; 4) Spray or roller coat the finish Spray or roll the finish paint 1-2 times. For the spray finish paint, the pressure of the spray gun is 4Kg/cm2-6Kg/cm2, the diameter of the nozzle is 2cm-3cm, the spray distance is 50cm-60cm, and the speed of the spray gun is 1-5m/s; for the roller coating finish coating, the coating amount is 0.15Kg/m2-0.20Kg/m2/pass.