CN113429849B

CN113429849B - Base paint of linen-color stone-like coating, preparation method and linen-color stone-like coating

Info

Publication number: CN113429849B
Application number: CN202110686996.6A
Authority: CN
Inventors: 娄玉爽; 乔磊
Original assignee: Beijing Raines New Materials Technology Co ltd
Current assignee: Hebei Laines New Material Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-05-24
Anticipated expiration: 2041-06-21
Also published as: CN113429849A

Abstract

The application relates to the field of stone-like coatings, and particularly discloses a base paint of a linen color stone-like coating, a preparation method and the linen color stone-like coating, wherein the base paint improves the content of emulsion, and cellulose is compounded by hydrophobic modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose, so that the toughness of the base paint is obviously improved, and a prepared paint film is continuous and compact, has a smooth surface and excellent stain resistance; the preparation method of the basic paint comprises the steps of adding various auxiliary agents, powder, hydrophobically modified ethyl hydroxyethyl cellulose and high molecular weight hydroxyethyl cellulose into deionized water, and stirring at a low speed; then adding a pH regulator, and stirring at a high speed of 1500 r/min; then reducing the rotating speed to below 1000r/min, and adding the emulsion to prepare the base paint of the linen color stone imitation paint; the base paint can be used for preparing the stone-like paint with the linen color stone by matching with the granulating liquid and the continuous phase, has the stone-like effect of the stone-like paint, has smooth paint film surface and has excellent stain resistance.

Description

Base paint of linen-color stone-like coating, preparation method and linen-color stone-like coating

Technical Field

The application relates to the technical field of stone-like coatings, in particular to a base paint of a colorful stone-like coating, a preparation method and the colorful stone-like coating.

Background

The stone-like paint is a thick external wall decorative paint with decorative effect exactly similar to marble and granite, is mainly prepared from natural stone powder with various colors, and is mainly used for building external walls of buildings. The stone-like coating has the characteristics of fire resistance, water resistance, acid and alkali resistance, pollution resistance and the like, and can effectively prevent the corrosion of the external severe environment to the building, thereby prolonging the service life of the building.

The stone-like paint is of various types, and among them, the application of the stone-like paint is common. The stone-like paint is a coating prepared by mainly using crushed stones such as natural granite and stone powder as main materials, using synthetic resin emulsion as a main binder and simultaneously assisting with various auxiliaries; the stone paint has the texture of natural stone, can provide pattern structures with various three-dimensional shapes, and is widely applied to the outer wall decoration of various buildings such as villas, apartments, office buildings and the like. However, because gaps exist among sand grains of the real stone paint, the gaps are easy to store dirt and are difficult to clean, and therefore, the dirt resistance of the real stone paint is poor.

In order to develop the stone-like coating with the stone-like effect of the real stone paint and capable of improving the defect of stain resistance of the real stone paint, some experts adopt a coating and suspension technology, wrap various colored particles through emulsion, reduce the size of granulation during granulation, mix various granulated particles by utilizing a continuous phase, and then obtain the stone-like coating with the stone-like effect of the real stone paint, wherein the surface of a paint film is smooth, and the stain resistance is improved.

However, in the actual preparation process, the particles cannot be completely wrapped by partial emulsion, so that the independence of the particles is poor after spraying, the particles are pasty, and the expected effect cannot be achieved.

Disclosure of Invention

In order to improve the phenomenon of particle pasting, the application provides a base paint of a colorful stone imitation stone coating, a preparation method and the colorful stone imitation stone coating.

In a first aspect, the application provides a base paint of a stone-like paint with colorful stones, which adopts the following technical scheme:

the base paint of the stone-like paint comprises the following components in percentage by weight: 20-30% of deionized water, 0.2-0.3% of a dispersant, 0.2-0.5% of a defoaming agent, 1-2% of an antifreezing agent, 1-2% of a film-forming auxiliary agent, 1-5% of titanium dioxide, 1-8% of kaolin, 0.1-0.5% of hydrophobically modified ethyl hydroxyethyl cellulose, 0.3-1% of high molecular weight hydroxyethyl cellulose, 1-2% of a pH regulator, 20-30% of an emulsion, 0.1-0.5% of a preservative, 5-10% of a 10wt% protective glue solution, 0.1-0.5% of a thickening agent and 30-45% of 80-120-mesh quartz sand, wherein the molecular weight of the high molecular weight hydroxyethyl cellulose is 9-11 ten thousand.

By adopting the technical scheme, because the granite is a very small particle similar to a small rice grain, in order to ensure that the particle can independently exist in the granulation process and prevent the particle from being burnt, the particle is required to have better toughness, and the toughness of the particle is mainly determined by the toughness of the base paint of the granite imitation stone paint, so the base paint formula of the granite imitation stone paint is particularly important.

The toughness of the base paint of the linen-color stone-like coating is embodied by carrying out a space cross-linking adsorption reaction on the emulsion, the cellulose and the protective glue solution, and the content of the emulsion is improved in the base paint of the linen-color stone-like coating, so that the emulsion is beneficial to fully wrapping particles; the hydrophobic modified ethyl hydroxyethyl cellulose has better toughness, good film forming property and water-white resistance compared with the hydrophobic modified hydroxyethyl cellulose, but the viscosity of the hydrophobic modified ethyl hydroxyethyl cellulose is lower and difficult to construct, and the high molecular weight hydroxyethyl cellulose is added to improve the viscosity of the base paint, thereby realizing the preparation of the base paint of the colorful stone imitation paint with excellent toughness; the base paint is matched with the granulating liquid and the continuous phase, and proper granulating parameters are set, so that the stone-like paint with the colorful color can be prepared.

Preferably, the base paint comprises the following components in percentage by weight: 20-30% of deionized water, 0.2-0.3% of a dispersant, 0.2-0.5% of a defoaming agent, 1-2% of an antifreezing agent, 1-2% of a film-forming auxiliary agent, 2-4% of titanium dioxide, 3-6% of kaolin, 0.2-0.4% of hydrophobically modified ethyl hydroxyethyl cellulose, 0.5-0.8% of high molecular weight hydroxyethyl cellulose, 1-2% of a pH regulator, 24-28% of an emulsion, 0.1-0.5% of a preservative, 5-10% of a 10wt% protective glue solution, 0.1-0.5% of a thickening agent and 30-45% of 80-120 mesh quartz sand, wherein the molecular weight of the high molecular weight hydroxyethyl cellulose is 10 ten thousand.

Preferably, the emulsion is a pure acrylic emulsion.

In a second aspect, the application provides a preparation method of a base paint of a stone-like paint of a colorful stone, which adopts the following technical scheme:

a preparation method of a base paint of a linen color stone imitation stone coating comprises the following steps:

at the rotating speed of 200-500 r/min, sequentially adding a dispersing agent, a defoaming agent, an antifreezing agent, a film-forming auxiliary agent, titanium dioxide, kaolin, hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose into deionized water, and stirring and dispersing for 3-8 min; adding a pH regulator, and stirring and dispersing for 15-25 min at the rotating speed of 1500-1800 r/min to obtain a mixture I;

and sequentially adding the emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120 meshes of quartz sand into the mixture I at the rotating speed of 800-1000r/min, stirring and dispersing for 8-12 min to obtain the base paint of the stone-like paint.

By adopting the technical scheme, under a lower rotating speed, all the auxiliary agents, powder, the hydrophobically modified ethyl hydroxyethyl cellulose and the hydroxyethyl cellulose with high molecular weight are added into the deionized water, so that all the components are uniformly dispersed and the viscosity is moderate; adding a pH regulator, increasing the rotating speed to more than 1500r/min, and fully dispersing the viscous mixture I by high-speed stirring to meet the qualified technical requirements; the rotating speed is reduced to be below 1000r/min, the emulsion is added to prevent emulsion breaking caused by mechanical shearing, and under the stirring of a moderate rotating speed, the emulsion, the protective glue solution and two celluloses are facilitated to generate more sufficient space cross-linking adsorption reaction, so that the base paint of the linen-color stone-like coating with moderate toughness is finally prepared.

In a third aspect, the application provides a stone-like paint with colorful stones, which adopts the following technical scheme: a stone-like paint is prepared from (5-6) - (2-3) parts by mass of base paint, a continuous phase and a granulating liquid.

By adopting the technical scheme, because this application has allocated the ratio of base paint, continuous phase and granulation liquid for granulation liquid fully wraps up the base paint, sets up corresponding granulation parameter, and the continuous phase mixes each granulation particle once more, can make the imitative stone coating of numb various stones, has the imitative stone effect of real stone paint.

Preferably, the granulating liquid is prepared from the following components in percentage by weight: 45-65% of deionized water, 0.1-0.5% of bentonite and 34.5-54.5% of 10wt% of protective glue solution.

Through adopting above-mentioned technical scheme, add bentonite in the granulation liquid, can automatic arrangement when the plus stirring be the gel that has three-dimensional network structure for the even dispersion of the particle made, suspension are in the base paint, and the granulation liquid of this application is fit for preparing the imitative stone coating of this application's of numb color stone.

Preferably, the preparation method of the granulating liquid is as follows: adding bentonite into deionized water at the rotating speed of 1500-1800 r/min, and stirring and dispersing for 40-60 min; and adding 10wt% of protective glue solution at the rotation speed of 800 plus materials at 1000r/min, and stirring and dispersing for 8-15 min to obtain the granulation liquid.

By adopting the technical scheme, the bentonite exists in the deionized water in a sol state, has higher viscosity, and needs to be stirred and sheared at high speed in the process of preparing the granulating liquid, so that the bentonite is uniformly suspended in the deionized water; then the stirring speed is reduced, and the protective glue solution is mixed and dispersed in the sol system, so that the prepared granulating liquid has excellent suspension property and is beneficial to improving the suspension stability of particles.

Preferably, the continuous phase is prepared from the following components in percentage by weight: 20-30% of deionized water, 0.1-0.5% of bentonite, 45-60% of silicone-acrylic emulsion, 10-20% of 80-90 mesh colored sand, 2-5% of a film forming additive, 1-5% of an antifreezing agent, 0.1-0.5% of a preservative, 0.1-0.5% of a pH regulator and 0.5-2% of a thickening agent.

By adopting the technical scheme, bentonite is added into the continuous phase, so that the suspension stability of the continuous phase is improved, and the water-white resistance of the stone-like coating can be improved; and adding 80-90-mesh colored sand into the continuous phase, so that the stone-like coating has the texture of sand, is closer to the stone-like effect of the real stone paint, and does not influence the smoothness of the surface of a paint film.

Preferably, the preparation method of the continuous phase is as follows: adding bentonite into deionized water at a rotating speed of 1500-1800 r/min, and stirring and dispersing for 25-30 min; and sequentially adding the silicone-acrylic emulsion, the 80-90-mesh colored sand, the film forming aid, the antifreezing agent, the preservative, the pH regulator and the thickening agent at the rotating speed of 800-1000r/min, and stirring and dispersing for 8-12 min to prepare the continuous phase.

By adopting the technical scheme, in the preparation process of the continuous phase, the bentonite is dispersed in the deionized water by adopting high-speed stirring, and the more uniform the dispersion of the bentonite in the continuous phase is, the more the suspension stability of particles in the stone-like coating is improved; the continuous phase prepared by the method is beneficial to enabling the particles to have higher suspension stability.

In a fourth aspect, the application provides a preparation method of a stone-like paint with colorful stones, which adopts the following technical scheme:

a preparation method of a stone-like paint with colorful stones comprises the following steps: adding color paste into the base paint, wherein the adding mass of the color paste accounts for 0-5% of the mass of the base paint, and stirring and mixing; then adding the granulation liquid, and shearing and dispersing; and adding the continuous phase, stirring and mixing to obtain the linen color stone imitation paint.

Preferably, after the colorful stone imitation stone coating is prepared, mica sheets are added and mixed uniformly; wherein the addition mass of the mica sheet is 0.1-0.5% of that of the mottled stone imitation coating.

By adopting the technical scheme, the colorful stone imitation stone coating is prepared by adding the color paste into the base paint, then adding the granulating liquid for granulation, and then adding the continuous phase to mix the granules; mica sheets can be added into the stone-like coating, so that the stone-like effect is more obvious, and the surface of a paint film has a brilliant effect.

In summary, the present application has the following beneficial effects:

1. according to the preparation method, the ratio of the emulsion, the cellulose and the protective glue solution is prepared in the base paint of the linen color stone imitation stone coating, and the hydrophobic modified ethyl hydroxyethyl cellulose and the high molecular weight hydroxyethyl cellulose are compounded, so that the toughness of the base paint is obviously improved; meanwhile, the water-white resistance of the colorful stone imitation stone coating is improved;

2. because this application has been joined in marriage the ratio of base paint, continuous phase and granulation liquid in the various stone imitative stone coating of sesame for granulation liquid fully wraps up the base paint, helps preparing out the stone imitative effect that the particle can exist independently and clear, and the fidelity of imitative real stone paint is higher.

3. The bentonite is added into the granulating liquid, so that the particles are kept independently, and the water-white resistance of a paint film is improved;

4. because this application adds 80~90 mesh colored sand in the continuous phase, allots the addition of silicone-acrylic emulsion and deionized water simultaneously, helps strengthening the imitative stone effect of numb colored stone imitative stone coating, strengthens the graininess of paint film.

Drawings

FIG. 1 is a schematic view of the finished paint of the granite color stone imitation paint.

FIG. 2 is a schematic diagram of a gunny stone imitation coating sprayed to form a film.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

The base paint of the stone-like paint is the same as the film-forming assistant, the antifreezing agent, the preservative, the pH regulator and the thickening agent in the continuous phase, and except the specific indication in the embodiment, the additives are as follows: the pH regulator is multifunctional amine selected from AMP-95; the antifreezing agent is propylene glycol; the film-forming additive is dodecyl alcohol ester; the preservative is BZ plus preservative; the thickener is TT-935 thickener. BYKS482 is selected as the base paint of the linen color stone imitation coating and a 10wt% protective glue solution in the granulation liquid. The emulsion in the base paint of the linen color stone imitation paint is pure acrylic emulsion, particularly 8399 emulsion; the titanium dioxide is R-298 titanium dioxide; the kaolin is calcined kaolin with 600 meshes; the dispersant is 731a dispersant; 1340 defoaming agent is selected as the defoaming agent; the silicone-acrylic emulsion has the model number of 8087; the bentonite is SMP-X70 bentonite; the hydrophobically modified ethyl hydroxyethyl cellulose is EHM500 cellulose; the hydroxyethyl cellulose with high molecular weight is 250HHBR with 10 ten thousand viscosity.

Examples

Examples 1 to 7

The base paint of the stone-like paint with the colorful stones is prepared by the following method:

according to the mixing amount shown in the table 1, at the rotating speed of 350r/min, sequentially adding a dispersing agent, a defoaming agent, an antifreezing agent, a film-forming auxiliary agent, titanium dioxide, kaolin, hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose into deionized water, and stirring and dispersing for 5 min; adding a pH regulator, and stirring and dispersing for 20min at the rotating speed of 1500r/min to obtain a mixture I;

and at the rotating speed of 800r/min, sequentially adding the emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120-mesh quartz sand into the mixture I, and stirring and dispersing for 10min to prepare the base paint of the stone-like paint.

TABLE 1 blending amounts (unit: kg) of respective raw materials of the base paints of the stone-like paint of examples 1 to 7 of Ma-Cai-Stone

Example 8

The base paint of the stone-like paint is prepared by the following steps:

according to the mixing amount shown in the embodiment 2, at the rotating speed of 400r/min, sequentially adding a dispersing agent, a defoaming agent, an antifreezing agent, a film-forming auxiliary agent, titanium dioxide, kaolin, hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose into deionized water, and stirring and dispersing for 5 min; adding a pH regulator, and stirring and dispersing for 20min at the rotating speed of 1600r/min to obtain a mixture I;

and sequentially adding the emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120 meshes of quartz sand into the mixture I at the rotating speed of 1000r/min, stirring and dispersing for 8min to prepare the base paint of the stone-like paint.

Example 9

according to the mixing amount shown in the embodiment 2, at the rotating speed of 200r/min, sequentially adding a dispersing agent, a defoaming agent, an antifreezing agent, a film-forming auxiliary agent, titanium dioxide, kaolin, hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose into deionized water, and stirring and dispersing for 8 min; adding a pH regulator at the rotating speed of 1650r/min, and stirring and dispersing for 20min to obtain a mixture I;

and sequentially adding the emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120 meshes of quartz sand into the mixture I at the rotating speed of 950r/min, stirring and dispersing for 10min to obtain the base paint of the colorful stone imitation paint.

Example 10

according to the mixing amount shown in the embodiment 2, at the rotating speed of 500r/min, sequentially adding a dispersing agent, a defoaming agent, an antifreezing agent, a film-forming auxiliary agent, titanium dioxide, kaolin, hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose into deionized water, and stirring and dispersing for 3 min; adding a pH regulator, and stirring and dispersing for 15min at the rotating speed of 1800r/min to obtain a mixture I;

and sequentially adding the emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120 meshes of quartz sand into the mixture I at the rotating speed of 900r/min, stirring and dispersing for 10min to prepare the base paint of the Ma-Cai stone.

Examples 11 to 14

The stone-like paint is prepared by the following steps:

adding color paste into the base paint of the stone-like paint prepared in example 2 according to the mixing amount shown in Table 2, and stirring and mixing to obtain a mixture I; adding the granulating liquid into the mixture I, shearing and granulating by using a dispersion disc, and setting granulating parameters to obtain a granulating material; and adding the continuous phase into the granulated material, stirring and mixing to obtain the linen-color stone imitation coating.

Wherein, the continuous phase is prepared by the following method: adding 0.4kg of bentonite into 30kg of deionized water at the rotating speed of 1500r/min, stirring and dispersing for 25 min; 53kg of silicone-acrylic emulsion, 10kg of 80-90-mesh colored sand, 3kg of film forming additive, 2kg of antifreeze, 0.3kg of preservative, 0.3kg of pH regulator and 1kg of thickening agent are sequentially added at the rotating speed of 800r/min, and the continuous phase is prepared by stirring and dispersing for 10 min.

The granulation liquid is prepared by the following method: adding 0.3kg of bentonite into 50kg of deionized water at the rotating speed of 1500r/min, and stirring and dispersing for 40 min; adding 49.7kg of 10wt% protective glue solution at the rotating speed of 800r/min, stirring and dispersing for 10min to obtain the granulating liquid.

TABLE 2 contents of the raw materials in the paint (unit: kg)

Test specimen	Base paint	Color paste	Continuous phase	Granulation liquid
					Example 11	50	1.5	20	30
Example 12	55	1.65	25	20
					Example 13	60	1.8	20	20
Example 14	50	1.5	30	20

Examples 15 to 17

A stone-like paint of a mochi stone is different from the paint of example 11 in that the formulation content of the continuous phase is added according to the blending amount shown in Table 3.

TABLE 3 content of each component in the continuous phase (unit: kg)

Sample(s)	Example 15	Example 16	Example 17
				Deionized water	26.5	23.3	20
Bentonite clay	0.4	0.4	0.4
				Silicone-acrylic emulsion	54	54	52
80-90 mesh colored sand	12	15	20
				Film forming aid	3	3.5	4
Antifreezing agent	2	2	2
				Preservative	0.3	0.3	0.3
pH regulator	0.3	0.3	0.3
				Thickening agent	1.5	1.2	1

Example 18

The stone-like paint of the mochi stone is different from the paint prepared in the embodiment 11 in that 1kg of mica sheets are added after the stone-like paint of the mochi stone is prepared, and the mixture is stirred and mixed for standby.

Example 19

The stone-like paint of the mochi stone is different from the paint prepared in the embodiment 18 in that 3kg of mica sheets are added after the stone-like paint of the mochi stone is prepared, and the mixture is stirred and mixed for standby.

Example 20

The stone-like paint of the mochi stone is different from the paint prepared in the embodiment 19 in that 5kg of mica sheets are added after the stone-like paint of the mochi stone is prepared, and the mixture is stirred and mixed for standby.

Comparative example

Comparative example 1

Example 1 disclosed in chinese patent publication No. CN110563386B was used as comparative example 1.

Comparative example 2

Comparative example 2 discloses a stone-like paint of a mochi stone, which is different from example 11 in that the base paint of the comparative example adopts hydroxyethyl cellulose with 10 ten thousand viscosity and high molecular weight with the same mass to replace the hydrophobically modified ethyl hydroxyethyl cellulose.

Comparative example 3

Comparative example 3 discloses a stone-like paint of a mochi color, which is different from example 11 in that the base paint of the comparative example adopts hydrophobically modified ethyl hydroxyethyl cellulose with the same mass instead of hydroxyethyl cellulose with high molecular weight.

Comparative example 4

Comparative example 4 discloses a stone-like paint of a mochi color, which is different from example 11 in that in the base paint of the comparative example, hydrophobically modified ethyl hydroxyethyl cellulose is replaced by hydrophobically modified hydroxyethyl cellulose.

Comparative example 5

Comparative example 5 discloses a stone-like paint of a mochi stone, which is different from example 11 in that in the base paint of the comparative example, hydroxyethyl cellulose with high molecular weight is replaced by common hydroxyethyl cellulose with 3 ten thousand viscosity.

Comparative example 6

Comparative example 6 discloses a stone-like paint of a hemp color stone, which is different from the paint of example 11 in the contents of base paint, color paste, continuous phase and granulating liquid, and comprises 65kg of base paint, 1.95kg of color paste, 15kg of continuous phase and 20kg of granulating liquid.

Comparative example 7

Comparative example 7 discloses a stone-like paint of a linen color stone, which is different from the paint of example 11 in the contents of base paint, color paste, continuous phase and granulating liquid, wherein the base paint is 45kg, the color paste is 1.35kg, the continuous phase is 25kg and the granulating liquid is 30 kg.

Comparative example 8

Comparative example 8 discloses a granite imitation stone coating, which is different from example 11 in that 80-90-mesh colored sand in a continuous phase is replaced by 80-90-mesh quartz sand.

Comparative example 9

Comparative example 9 discloses a granite imitation stone coating, which is different from example 11 in that 80-90-mesh colored sand is replaced by 40-80-mesh colored sand in a continuous phase.

Comparative example 10

Comparative example 10 discloses a granite imitation coating, which is different from example 11 in that bentonite in the granulation liquid is replaced with xanthan gum FuFeng 80.

Performance test

And (3) detecting the toughness of the base paint of the linen color stone imitation stone coating: adding color paste into the base paints in the examples 1-10 and the comparative examples 2-5 for toning, and then adding a granulating liquid for granulating to obtain a particle mixture; 100g of the particle mixture is placed on white cardboard, the particle mixture is scraped by a paint mixing knife, if the particles exist independently, are clear and complete, the toughness is excellent, and if the particles are not clear and are pasty, the toughness is not good, and the results are shown in Table 4.

The performance of example 11 was tested according to JG/T24-2018, synthetic resin emulsion Sand wall architectural coatings, and the results are shown in Table 5.

And (3) detecting the toughness and water-white resistance of the stone-like coating: respectively spraying the coatings of examples 11-20 and comparative examples 1-10 to form a film by adopting a water-in-water spray gun with the diameter of 2.5, and observing the application property and the state of particles in the paint film; after the stone-like paint was completely dried, a dripping test was conducted, and the whitening resistance of the paint film surface was observed, with the results shown in table 6.

The appearance and paint film appearance of the stone-like paint are as follows: photographing is carried out on the colorful stone-like coating, the appearance of the stone-like coating is observed, and the result is shown in figure 1; and (3) spraying the colorful stone imitation paint to form a film, and photographing the paint film, wherein the result is shown in figure 2.

TABLE 4 results of examining toughness of base paints of examples 1 to 10 and comparative examples 2 to 5

The present application will be described in detail below with reference to the test data in Table 4.

According to the detection results of the embodiments 1 to 3, the particles can exist independently and are clearer and more complete with the increase of the addition amount of the two celluloses, which shows that the hydrophobic modified ethyl hydroxyethyl cellulose and the 10 ten thousand viscosity high molecular weight hydroxyethyl cellulose are added into the base paint, and the toughness of the base paint is improved. According to the detection results of the embodiments 4 to 7, the ratio of the emulsion, the protective glue solution and the cellulose in the base paint is compared, and when the quality of the cellulose is kept unchanged, the emulsion: when the mass ratio of the protective glue solution is 3-3.5, the improvement of the toughness of the base paint is facilitated, and when the emulsion: when the mass ratio of the protective glue solution is less than 3 or more than 3.5, the toughness of the base paint is slightly reduced. In conclusion, the special proportion of the emulsion, the protective glue solution and the cellulose is beneficial to preparing the base paint with excellent toughness.

According to the detection results of the embodiments 8 to 10, the rotation speed of the preparation method of the base paint is adjusted, the lower rotation speed is adopted for stirring and mixing in the initial feeding stage, before the emulsion is added, the auxiliary agents and the powder are required to be stirred and mixed fully at a high speed, and after the emulsion is added, the mixed material liquid is stirred and mixed at a moderate rotation speed.

According to the detection result of the comparative example 2, the viscosity of 10 ten thousand viscose high molecular weight hydroxyethyl cellulose is high, the viscosity of the prepared base paint is high, the fluidity is poor, the particles cannot exist independently after scraping, and the particles are connected into one piece, so that the color mixing phenomenon exists; according to the detection result of the comparative example 3, the hydrophobic modified ethyl hydroxyethyl cellulose is independently adopted, the particles can independently exist, but the particle definition is poor, and the viscosity is low, so that the thickness of a single batch scraping paint film is too thin during construction, and multiple batch scraping is needed; according to the detection result of the comparative example 4, the hydrophobic modified ethyl hydroxyethyl cellulose in the base paint is replaced by the hydrophobic modified hydroxyethyl cellulose, so that an ethyl branched chain is lacked, the degree of space adsorption reaction among the emulsion, the cellulose and the protective glue solution is reduced, the toughness of the base paint is reduced, the particles cannot exist independently, and the particles are unclear and have a pasting phenomenon; according to the detection results of comparative example 5, when 3 ten thousand viscosity of common hydroxyethyl cellulose is adopted in the base paint, the particles can independently exist, but the particle definition is poor, and the phenomenon of pasting is generated.

TABLE 5 Performance test results of stone-like paint with mottled color stone

The present application will be described in detail below with reference to the test data in Table 5.

The performance test is carried out on the sample of the example 11, and as can be seen from the table 5, the stone-like coating of the mockuhi stone prepared in the example 11 has excellent water resistance and alkali resistance, and after 120h, the surface of the coating has no abnormality; the stone-like coating prepared in example 11 has excellent temperature change resistance and artificial weather aging resistance, and after 1000 hours, the surface of the coating does not crack, bulge or peel; but also has excellent flexibility, no crack in the diameter range of 70mm and excellent comprehensive performance of the product.

TABLE 6 detection results of toughness and water-white resistance of stone-like paint of Ma-Cai stone

The present application will be described in detail below with reference to the test data in Table 6.

According to the detection results of the embodiments 11 to 14, the ratio of the base paint to the granulating liquid is compared, and the proportion of the granulating liquid is increased, so that the base paint is fully wrapped by the granulating liquid, the granulated particles are clear, and the particles can independently exist.

According to the detection results of the embodiments 15 to 17, the proportion of the deionized water, the silicone-acrylic emulsion and the 80-90-mesh colored sand in the continuous phase is adjusted, the silicone-acrylic emulsion accounts for more than 50% of the continuous phase, the addition amount of the 80-90-mesh colored sand is increased, and the addition amount of the deionized water is adjusted in good time.

According to the detection results of the embodiments 18 to 20, the mica sheets are added into the stone-like paint, and after spraying, the stone-like effect of the paint film is improved, the granular effect of the surface of the paint film is enhanced, and the surface of the paint film has a brilliant effect and is very attractive.

According to the detection result of the comparative example 1, the fact that the real stone paint on the market is adopted, the surface of the paint film is seriously water-white after spraying indicates that the water-white resistance of the real stone paint is poor, the surface of the paint film of the real stone paint has a sand hole phenomenon, the surface of the paint film is uneven, the surface is very easy to fall ash, and the contamination resistance is poor.

According to the detection results of the comparative examples 2 to 5, the toughness and water-whitening resistance of the stone-like coating are related to the selection of the cellulose, and if hydrophobic modified ethyl hydroxyethyl cellulose and high molecular weight hydroxyethyl cellulose are not compounded, the toughness of a paint film is poor, particles cannot exist independently, the color mixing phenomenon of different degrees can be caused, and the surface of the paint film is slightly water-white.

According to the detection results of the comparative examples 6 to 7, when the mass ratio of the base paint exceeds 60%, the coating of the granulating liquid on the base paint is not good, part of particles cannot independently exist, and the local color mixing phenomenon exists, and when the mass ratio of the base paint is less than 50%, the particles can independently exist, but the definition of the particles is obviously reduced.

According to the detection result of the comparative example 8, if the 80-90-mesh colored sand in the continuous phase is replaced by 80-90-mesh quartz sand, the phenomenon of floating and fouling is generated on the surface of the paint film, so that the definition of particles and the stone imitation effect of the paint film are influenced; according to the detection result of the comparative example 9, if the grain size of the colored sand is 40-80 meshes, the grain size is larger, so that the prominent feeling of the surface of the paint film is obvious, and the stain resistance of the surface of the paint film is seriously affected; according to the detection result of the comparative example 10, if the bentonite in the granulation liquid is replaced by the xanthan gum, the xanthan gum is easy to absorb water, has strong hydrophilicity, and can seriously affect the water whitening resistance of the paint film.

In addition, in order to increase the visual sense of the hemp color stone imitation coating, the inventor arbitrarily selects a sample to photograph the hemp color stone imitation coating, and as can be seen by referring to fig. 1, the hemp color stone imitation coating has small particle size which is similar to small rice grains, the particles are independent from one another, and the naked eyes can clearly see the paint; referring to fig. 2, it can be seen that the paint film formed by spraying the stone-like paint with mottled color has the stone-like effect of the stone-like paint, and the paint film has a smooth surface, is less prone to dust falling, and has excellent stain resistance.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The base paint of the stone-like paint is characterized by comprising the following components in percentage by weight: 20-30% of deionized water, 0.2-0.3% of dispersing agent, 0.2-0.5% of defoaming agent, 1-2% of antifreezing agent, 1-2% of film-forming auxiliary agent, 2-4% of titanium dioxide, 3-6% of kaolin, 0.2-0.4% of hydrophobically modified ethyl hydroxyethyl cellulose, 0.5-0.8% of high molecular weight hydroxyethyl cellulose, 1-2% of pH regulator, 24-28% of pure acrylic emulsion, 0.1-0.5% of preservative, 5-10% of 10wt% of protective glue solution, 0.1-0.5% of thickening agent and 30-45% of 80-120 mesh quartz sand, wherein the high molecular weight hydroxyethyl cellulose is 10 million viscous 250HHBR, and the mass ratio of the emulsion to the protective glue solution is 3-3.5.

2. The preparation method of the base paint of the mochi stone paint of claim 1, which is characterized by comprising the following steps:

and (3) sequentially adding the pure acrylic emulsion, the preservative, 10wt% of protective glue solution, the thickening agent and 80-120-mesh quartz sand into the mixture I at the rotating speed of 800-1000r/min, and stirring and dispersing for 8-12 min to prepare the base paint of the stone-like paint.

3. The linen color stone imitation stone coating prepared by applying the base paint of any one of claims 1-2, which is characterized in that: the linen-color stone imitation coating is prepared from (5-6) to (2-3) base paint, a continuous phase and a granulating liquid in a mass ratio of (2-3).

4. The stone-like paint of the linen color stone as claimed in claim 3, wherein: the granulation liquid is prepared from the following components in percentage by weight: 45-65% of deionized water, 0.1-0.5% of bentonite and 34.5-54.5% of 10wt% of protective glue solution.

5. The stone-like paint of the linen color stone as claimed in claim 4, wherein the preparation method of the granulating liquid is as follows: adding bentonite into deionized water at the rotating speed of 1500-1800 r/min, and stirring and dispersing for 40-60 min; and adding 10wt% of protective glue solution at the rotation speed of 800 plus materials at 1000r/min, and stirring and dispersing for 8-15 min to obtain the granulation liquid.

6. The stone-like paint of the linen color stone as claimed in claim 3, wherein: the continuous phase is prepared from the following components in percentage by weight: 20-30% of deionized water, 0.1-0.5% of bentonite, 45-60% of silicone-acrylic emulsion, 10-20% of 80-90 mesh colored sand, 2-5% of a film forming additive, 1-5% of an antifreezing agent, 0.1-0.5% of a preservative, 0.1-0.5% of a pH regulator and 0.5-2% of a thickening agent.

7. The stone-like paint of claim 6, wherein the preparation method of the continuous phase comprises the following steps: adding bentonite into deionized water at a rotating speed of 1500-1800 r/min, and stirring and dispersing for 25-30 min; and sequentially adding the silicone-acrylic emulsion, the 80-90-mesh colored sand, the film forming aid, the antifreezing agent, the preservative, the pH regulator and the thickening agent at the rotating speed of 800-1000r/min, and stirring and dispersing for 8-12 min to prepare the continuous phase.

8. The preparation method of the stone-like paint with sesame color and any one of claims 3 to 7, characterized by comprising the following steps: adding color paste into the base paint, wherein the adding mass of the color paste accounts for 0-5% of the mass of the base paint, and stirring and mixing; then adding the granulation liquid, and shearing and dispersing; then adding the continuous phase, stirring and mixing to prepare the stone-like paint of the colorful stone.

9. The preparation method of the stone-like paint of the colorful stone as claimed in claim 8, wherein the stone-like paint comprises the following steps: after the stone-like paint of the colorful stone is prepared, adding the mica sheets and mixing uniformly; wherein the addition mass of the mica sheets is 0.1-0.5% of that of the colorful stone imitation stone coating.