CN112500743A

CN112500743A - Novel diatomite sand-in-water multicolor paint and preparation method thereof

Info

Publication number: CN112500743A
Application number: CN202011374734.8A
Authority: CN
Inventors: 郑昌瑞
Original assignee: Nanjing Zhongya Technology Co ltd
Current assignee: Nanjing Zhongya Technology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-16

Abstract

The application relates to the field of building decoration materials, and particularly discloses a novel diatomite sand-in-water multicolor paint and a preparation method thereof. The novel diatomite sand-in-water multicolor paint is prepared from the following raw materials in parts by weight: 40-80 parts of base paint, 10-30 parts of continuous phase and 10-30 parts of granulating solution, wherein the base paint is prepared from the following raw materials in parts by weight: 600 parts of 500-containing water, 750 parts of 600-containing quartz sand, 350 parts of 250-containing styrene-acrylic emulsion, 40-60 parts of diatomite, 20-30 parts of protective adhesive, 6-18 parts of cellulose, 2-8 parts of rutile titanium dioxide, 1-4 parts of dispersing agent, 12-18 parts of film-forming assistant and 1-4 parts of defoaming agent. The product of the application has the effects of purifying air, having high simulation degree and being not easy to crack; in addition, according to the preparation method, the viscosity is adjusted to 80-85KU after the base paint, the continuous phase and the granulating solution are uniformly stirred, so that the prepared diatomite sand-in-water multicolor paint has better bonding performance and can be more firmly bonded on a building wall.

Description

Novel diatomite sand-in-water multicolor paint and preparation method thereof

Technical Field

The application relates to the field of building decoration materials, in particular to a novel diatomite sand-in-water multicolor paint and a preparation method thereof.

Background

The sand-in-water multicolor paint combines the advantages of multicolor paint and real stone paint, and compared with water-in-water paint, the sand-in-water paint has better strength of a coating film and more excellent weather resistance; compared with real stone paint, the water-coated sand paint has richer pattern simulation degree and more vivid stone simulation effect.

In the related technology, an inorganic sand-in-water multicolor paint is prepared by mixing a protective glue solution, a granulation base paint and a continuous phase; the protective glue solution comprises 90-100 parts by mass of deionized water, 0.1-1 part by mass of anti-settling agent and 1-10 parts by mass of protective glue powder; the granulation base paint comprises 25-35 parts of deionized water, 0.5-1.5 parts of cellulose ether, 1-10 parts of kaolin, 0.1-1 part of titanium dioxide, 10-30 parts of inorganic resin, 1-5 parts of protective rubber powder, 0.1-0.5 part of color paste and 30-50 parts of 80-120-mesh snowflake white; the continuous phase comprises 40-70 parts of inorganic resin, 30-50 parts of deionized water, 0.1-1 part of multifunctional additive and 0.5-1 part of thickening agent. The inorganic sand-in-water multicolor paint has the characteristic of good simulation effect.

The atmosphere in some areas contains various pollutants, which cause adverse effects on the surrounding living environment, and most people hope to live in the environment with low pollution degree along with the gradual enhancement of the environmental awareness of people; therefore, the colorful coating which can improve the quality of the surrounding environment and is not easy to fall off in a polluted environment is favored by people.

Disclosure of Invention

In order to reduce the shedding of the coating while improving the environment-friendly effect of the coating, the application provides a novel diatomite sand-in-water multicolor coating and a preparation method thereof.

The application provides a novel diatomaceous earth sand-in-water multicolor paint adopts following technical scheme:

a novel diatomite sand-in-water multicolor paint is prepared from the following raw materials in parts by weight: 40-80 parts of base paint, 10-30 parts of continuous phase and 10-30 parts of granulating solution, wherein the base paint is prepared from the following raw materials in parts by weight: 600 parts of 500-containing water, 750 parts of 600-containing quartz sand, 350 parts of 250-containing styrene-acrylic emulsion, 40-60 parts of diatomite, 20-30 parts of protective adhesive, 6-18 parts of cellulose, 2-8 parts of rutile titanium dioxide, 1-4 parts of dispersing agent and 12-18 parts of film-forming assistant.

By adopting the technical scheme, as the diatomite and the rutile type titanium dioxide are adopted, the diatomite can adsorb harmful substances such as formaldehyde, benzene and the like in the purified air and purify the indoor air, but the basic paint added with the diatomite has poor temperature and humidity resistance and is easy to fall off; because the rutile type titanium dioxide is subjected to surface treatment in the preparation process, the surface of the rutile type titanium dioxide is coated with one or more layers of inorganic hydrous oxide films, and the inorganic hydrous oxide films can improve the weather resistance, so that the rutile type titanium dioxide can enhance the temperature and humidity resistance of the base paint and reduce the shedding of the base paint; the prepared diatomite sand-in-water multicolor paint can improve the quality of ambient air and reduce falling off in a polluted environment after the prepared base paint is mixed with raw materials such as a continuous phase, a granulating solution and the like.

Preferably, the base paint is prepared from the following raw materials in parts by weight: 570 parts of water 550-containing material, 700 parts of quartz sand 640-containing material, 320 parts of styrene-acrylic emulsion 280-containing material, 48-52 parts of diatomite, 23-27 parts of protective adhesive, 10-14 parts of cellulose, 4-6 parts of rutile titanium dioxide, 2-3 parts of dispersing agent and 14-16 parts of film-forming auxiliary agent.

By adopting the technical scheme, the base paint prepared according to the proportion can obtain better environment-friendly effect and temperature and humidity resistant effect, and is not easy to fall off in a polluted environment.

Preferably, the defoaming agent is one of organic silicon modified mineral oil defoaming agent or polyether modified organic silicon defoaming agent.

By adopting the technical scheme, the diatomite is light in weight and strong in adsorbability, and is adsorbed on bubbles in the process of preparing the base paint, so that stable bubbles are easily generated, the bubbles are difficult to eliminate in a short time, and the organic silicon modified mineral oil defoaming agent or polyether modified organic silicon defoaming agent is used, so that the spreadability of the diatomite on the liquid level of the water phase can be improved, and the elimination of the bubbles in a stable state is accelerated.

Preferably, the base paint also comprises 1.2-1.8 parts of pH regulator, and the pH regulator is 2-amino-2-methyl-1-propanol.

By adopting the technical scheme, the pH regulator is adopted, so that the pH value of the base paint can be adjusted to be alkalescent, the damage of an oxide film on the surface of the titanium dioxide is reduced, and the temperature and humidity resistance of the base paint is better enhanced by the titanium dioxide; the 2-amino-2-methyl-1-propanol can not only adjust the pH value of the base paint, but also be compatible with water and styrene-acrylic emulsion and has a dispersing effect, so that the addition of the 2-amino-2-methyl-1-propanol is beneficial to improving the temperature and humidity resistance of the base paint.

Preferably, the cellulose is a combination of water-soluble hydroxyethylcellulose and hydrophobically modified hydroxyethylcellulose.

By adopting the technical scheme, the hydrophobically modified hydroxyethyl cellulose can disperse the diatomite in the base paint, but the base paint is easy to generate unstable phenomena such as water diversion, and the water-soluble hydroxyethyl cellulose can reduce unstable phenomena such as water diversion and enhance the stability of the base paint.

Preferably, the base paint is prepared according to the following method:

preparing required raw materials according to the weight ratio;

under the condition of stirring, adding cellulose, a dispersing agent and a defoaming agent into water, and uniformly stirring to obtain a mixed solution; under the condition of stirring, adding diatomite and rutile titanium dioxide into the mixed solution, and uniformly stirring to obtain a precursor solution;

under the stirring condition, adding water, styrene-acrylic emulsion and film-forming auxiliary agent, and uniformly stirring to obtain base liquid;

and under the stirring condition, adding the protective glue and the quartz sand into the base liquid, and uniformly stirring to obtain the base paint.

By adopting the technical scheme, the auxiliary agents such as cellulose, dispersing agent and the like are dispersed in water to prepare the mixed solution, then the filler such as diatomite and rutile titanium dioxide is added into the mixed solution to be stirred, so that the diatomite and rutile titanium dioxide are favorably and uniformly dispersed in the mixed solution, an excellent film forming effect can be obtained, and finally the protective glue and the quartz sand are added, so that the diatomite, rutile titanium dioxide and quartz sand can be wrapped together to form particles, and the prepared base paint has a simulation effect and has an air purification effect.

Preferably, the diatomite is subjected to the following treatment in advance: mixing a kieselguhr raw material with 35% -45% sulfuric acid solution to obtain a material A, performing microwave treatment on the material A for 45-65min under the microwave power of 220-420W, and filtering, washing and drying to obtain the kieselguhr.

By adopting the technical scheme, the diatomite subjected to microwave acid treatment can improve the purity of the diatomite, increase the micropores and the specific surface area of the diatomite, ensure that the diatomite has stronger adsorbability on rutile titanium dioxide, and improve the temperature and humidity resistance of the coating.

Preferably, the continuous phase is prepared as follows: adding 4-8 parts of hydrophobic alkali swelling thickener into 500 parts of water of 400-one according to the weight ratio under the stirring condition, and uniformly stirring; and then adding 1-3 parts of 2-amino-2-methyl-1-propanol, stirring uniformly, then sequentially adding 1-2 parts of organic silicon modified mineral oil defoaming agent, 550 parts of phenylpropyl emulsion and 20-30 parts of film-forming auxiliary agent, and stirring uniformly at normal temperature to obtain a continuous phase.

By adopting the technical scheme, as the hydrophobic alkali swelling thickener is adopted, the prepared continuous phase can be mutually adsorbed with oleophylic groups in the base paint to form a three-dimensional network structure, so that the diatomite can be adsorbed on the network structure and is three-dimensionally and uniformly dispersed in the coating, the diatomite precipitation is reduced, and the form and the cracking resistance of a coating formed by the coating are improved; the organic silicon modified mineral oil defoaming agent and the 2-amino-2-methyl-1-propanol are both more suitable for being matched with base paint to improve the comprehensive performance of the coating.

Preferably, the granulation solution is prepared from the following raw materials in parts by weight: 60-80 parts of water, 8-12 parts of 2% xanthan gum aqueous solution and 18-22 parts of protective gum.

By adopting the technical scheme, as the xanthan gum aqueous solution is adopted, the diatomite, the rutile titanium dioxide and the quartz sand are agglomerated on the network structure formed by xanthan gum sol molecules to form stable texture particles and are suspended in the solution, and the protective gum and the xanthan gum aqueous solution act together, so that the agglomeration effect of the diatomite, the rutile titanium dioxide and the quartz sand is enhanced; the xanthan gum aqueous solution with the mass fraction of 2% has moderate viscosity, and can obtain better effect; therefore, the prepared diatomite sand-in-water multicolor paint has a stone-like effect after solidification, and has high simulation degree.

The application provides a preparation method of a novel diatomite sand-in-water multicolor paint, which adopts the following technical scheme and comprises the following steps:

preparing a protective adhesive, a base paint, a continuous phase and a granulating solution;

mixing the base paint, the continuous phase and the granulating solution according to the weight ratio, and uniformly stirring;

and (5) adjusting the viscosity to 80-85KU according to the size of the color point, thus completing the preparation.

By adopting the technical scheme, the viscosity is adjusted to 80-85KU after the base paint, the continuous phase and the granulating solution are uniformly stirred, so that the prepared diatomite sand-in-water multicolor paint has better bonding performance and can be firmly bonded on a building wall.

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

1. the base paint prepared from the diatomite, the rutile type titanium dioxide and the like has the air purifying effect, is resistant to temperature and humidity and is not easy to fall off, so that the diatomite sand-in-water multicolor paint prepared from the base paint, the continuous phase, the granulating solution and other raw materials has the air purifying effect and is not easy to fall off.

2. The application preferably adopts the organic silicon modified mineral oil defoaming agent or the polyether modified organic silicon defoaming agent, so that the spreadability of the diatomite on the liquid surface of the water phase can be improved, and the elimination of bubbles in a stable state is accelerated.

3. In the application, 2-amino-2-methyl-1-propanol is preferably adopted to adjust the pH value of the base paint, reduce the damage of a film on the surface of titanium dioxide and better enhance the temperature and humidity resistance of the diatomite.

4. The diatomite treated by the microwave acid is preferably adopted in the application, so that the purity of the diatomite can be improved, and the micropores and the specific surface area of the diatomite are increased, so that the adsorbability of the diatomite to rutile titanium dioxide is stronger, and the temperature and humidity resistance of the coating is improved.

5. According to the method, after the base paint, the continuous phase and the granulating solution are uniformly stirred, the viscosity is adjusted to 80-85KU, so that the prepared diatomite sand-in-water multicolor paint has better bonding performance and can be more firmly bonded on a building wall.

Detailed Description

The present application will be described in further detail with reference to examples.

The quartz sand is 80-120 meshes of snowflake white quartz sand;

the styrene-acrylic emulsion is RS-8599;

the water-soluble hydroxyethyl cellulose is HBR-250;

the hydrophobically modified hydroxyethyl cellulose is HE-10K;

the organic silicon modified mineral oil defoaming agent is an NXZ defoaming agent purchased from break-Thai chemical Co., Ltd in Nantong city;

the polyether modified organosilicon defoamer is a T115 defoamer purchased from chemical engineering Co., Ltd in New four seas in Hubei;

the dispersant is SN-5040 dispersant from Guangzhou chemical company;

the rutile type titanium dioxide is R-996 rutile type titanium dioxide purchased from Hongda chemical company Limited in Changzhou;

the diatomite raw material is AG-3000 diatomite purchased from Qingdao Sanxing diatomite Co.Ltd;

2-amino-2-methyl-1-propanol is AMP-95 available from Guangzhou Yak Innovation materials, Inc.;

the film-forming assistant is Texanol produced by Istmann chemical company;

the hydrophobic alkali swelling thickener is HS-1152;

the associated alkali swelling thickener is SN 636;

xanthan gum is available from Shandong Zhongxuan xanthan;

the protective glue is an aqueous solution of 20 mass percent of AC-482 protective glue.

Preparation examples of raw materials

Preparation example 1

The preparation method of the diatomite comprises the following steps,

(1) adding 100kg of diatomite raw material into a mixing tank containing 800L of 40% sulfuric acid solution to obtain a material A;

(2) performing microwave treatment on the material A for 60min under the microwave power of 320W;

(3) and then filtering, washing and drying the solution subjected to microwave acid treatment to obtain the diatomite.

Preparation example 2

The preparation procedure of a base paint is as follows,

(1) the following raw materials are prepared by weight: 500kg of water, 600kg of quartz sand, 250kg of styrene-acrylic emulsion, 40kg of diatomite prepared in preparation example 1, 20kg of protective glue, 6kg of cellulose, 2kg of rutile titanium dioxide, 1kg of dispersing agent, 12kg of film-forming assistant and 1kg of NXZ defoaming agent; wherein the cellulose comprises 2.25kg of HE-10K and 3.75kg of HBR-250;

(2) adding 470kg of water into a stirrer, and adding cellulose, a dispersing agent and an NXZ defoaming agent into the water under the stirring condition of 400r/min to obtain a mixed solution;

(3) adding diatomite and rutile titanium dioxide into the mixed solution, increasing the rotating speed to 800r/min, and dispersing for 5min to obtain a precursor solution;

(4) adding 30kg of water into the precursor solution, increasing the rotating speed to 1200r/min, dispersing for 5 minutes, adding the styrene-acrylic emulsion and the film-forming auxiliary agent, and dispersing for 5 minutes to obtain a base solution;

(5) and adding the protective glue and the quartz sand into the base liquid, adjusting the rotating speed to 1500r/min, and dispersing for 10min to obtain the base paint.

Preparation example 3

The preparation procedure of a base paint is as follows,

(1) the following raw materials are prepared by weight: 600kg of water, 750kg of quartz sand, 350kg of styrene-acrylic emulsion, 60kg of diatomite prepared in preparation example 1, 30kg of protective glue, 18kg of cellulose, 8kg of rutile titanium dioxide, 5kg of dispersing agent, 18kg of film-forming assistant and 4kg of NXZ defoaming agent; wherein the cellulose comprises 6.75kg of HE-10K and 11.25kg of HBR-250;

(2) adding 570kg of water into a stirrer, and adding cellulose, a dispersing agent and an NXZ defoaming agent into the water under the stirring condition of 400r/min to obtain a mixed solution;

Preparation example 4

The preparation procedure of a base paint is as follows,

(1) the following raw materials are prepared by weight: 550kg of water, 640kg of quartz sand, 280kg of styrene-acrylic emulsion, 48kg of diatomite prepared in preparation example 1, 23kg of protective glue, 10kg of cellulose, 4kg of rutile titanium dioxide, 2kg of dispersing agent, 14kg of film-forming assistant and 2kg of NXZ defoaming agent; wherein the cellulose comprises 3.75kg of HE-10K and 6.25kg of HBR-250;

(2) adding 520kg of water into a stirrer, and adding cellulose, a dispersing agent and an NXZ defoaming agent into the water under the stirring condition of 400r/min to obtain a mixed solution;

Preparation example 5

The preparation procedure of a base paint is as follows,

(1) the following raw materials are prepared by weight: 570kg of water, 700kg of quartz sand, 320kg of styrene-acrylic emulsion, 52kg of diatomite prepared in preparation example 1, 27kg of protective glue, 14kg of cellulose, 6kg of rutile titanium dioxide, 3kg of dispersing agent, 16kg of film-forming assistant and 3kg of NXZ defoaming agent; wherein the cellulose comprises 5.75kg of HE-10K and 8.25kg of HBR-250;

(2) adding 510kg of water into a stirrer, and adding cellulose, a dispersing agent and an NXZ defoaming agent into the water under the stirring condition of 400r/min to obtain a mixed solution;

Preparation example 6

The preparation procedure of a base paint is as follows,

(1) the following raw materials are prepared by weight: 560kg of water, 670kg of quartz sand, 300kg of styrene-acrylic emulsion, 50kg of diatomite prepared in preparation example 1, 25kg of protective glue, 12kg of cellulose, 5kg of rutile titanium dioxide, 2.5kg of dispersing agent, 15kg of film-forming assistant and 2.5kg of NXZ defoaming agent; wherein the cellulose comprises 4.5kg of HE-10K and 7.5kg of HBR-250;

(2) adding 530kg of water into a stirrer, and adding cellulose, a dispersing agent and an NXZ defoaming agent into the water under the stirring condition of 400r/min to obtain a mixed solution;

Preparation example 7

The base paint prepared in this preparation example differs from that of preparation example 6 in that the defoamer is a T115 defoamer.

Preparation example 8

The base paint prepared in this production example was different from that of production example 6 in that 1.5kg of AMP-95 type pH adjusting agent was further added in the step (3).

Preparation example 9

The base paint prepared in this preparation example differs from that of preparation example 6 in that HBR-250 is replaced with HE-10K.

Preparation example 10

The base paint prepared in this preparation example was different from that of preparation example 6 in that the diatomaceous earth prepared in preparation example 1 was replaced with AG-3000 diatomaceous earth as a raw material.

Preparation example 11

A continuous phase is prepared as follows,

(1) the following raw materials are prepared by weight: 450kg of water, 6kg of hydrophobic alkali swelling thickener, 2kg of AMP-95 pH regulator, 1kg of NXZ defoamer, 500kg of styrene-acrylic emulsion and 25kg of film-forming assistant;

(2) adding water and the hydrophobic alkali swelling thickener into a stirrer, adjusting the rotating speed to 500r/min, and dispersing for 5 minutes;

(3) adding AMP-95 type pH regulator, adjusting rotation speed to 800r/min, and dispersing for 5 min;

(4) adding the NXZ defoaming agent, the styrene-acrylic emulsion and the film forming additive in sequence, keeping the rotating speed at 600r/min, and dispersing for 10 minutes to obtain a continuous phase.

Preparation example 12

This production example is different from production example 11 in that the hydrophobic alkali swelling thickener was replaced with an associated alkali swelling thickener.

Preparation example 13

A granulation solution is prepared by the following steps: 700kg of water, 100kg of xanthan gum aqueous solution with the mass fraction of 2% and 200kg of protective gum are sequentially added into a stirrer and dispersed for 10min at the rotating speed of 600r/min to obtain the granulating solution.

Preparation example 14

This production example is different from production example 13 in that a 2% mass fraction aqueous xanthan gum solution was replaced with the protective gum prepared in production example 1.

Examples

Example 1

And sequentially adding 40kg of the base paint prepared in the preparation example 2, 10kg of the continuous phase prepared in the preparation example 11 and 10kg of the granulating solution prepared in the preparation example 13 into a stirrer, dispersing for 20min at the rotating speed of 400r/min to obtain a finished paint, and adjusting the viscosity of the finished paint to 83KU to obtain the diatomite sand-in-water multicolor paint.

Example 2

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 3.

Example 3

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 4.

Example 4

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation example 5.

Example 5

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 6.

Example 6

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 7.

Example 7

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 8.

Example 8

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation 9.

Example 9

This example differs from example 1 in that the base paint was prepared according to the procedure of preparation example 10.

Example 10

This example differs from example 7 in that the continuous phase was prepared according to preparation 12.

Example 11

This example differs from example 10 in that the granulating solution was prepared according to the procedure of preparation 14.

Comparative example

Comparative example 1

A preparation method of an inorganic sand-in-water multicolor paint specifically comprises the following steps:

(1) preparing a protective colloid solution: adding 90 parts of deionized water and 1 part of protective rubber powder into a mixing device with a stirrer, stirring, adding 0.1 part of anti-settling agent after the protective rubber powder is completely dissolved, and uniformly stirring;

(2) preparation of granulation base paint: adding 25 parts of deionized water and 0.5 part of cellulose ether into a mixer with a stirring device, stirring until the deionized water and the cellulose ether are completely dissolved, sequentially adding 1 part of kaolin and 0.1 part of titanium dioxide, adjusting the rotation speed to 1000r/min, stirring for 20min, adding 10 parts of inorganic resin and 1 part of protective rubber powder, adjusting the rotation speed to 600r/min, stirring for 30min to obtain white base paint, adding 0.1 part of color paste for color adjustment according to requirements, adding 30 parts of 80-120-mesh snowflake white, adjusting the rotation speed to 700r/min, and stirring for 20min to obtain granulation base paint for later use;

(3) preparation of a continuous phase: adding 40 parts of inorganic resin, 30 parts of deionized water and 0.1 part of multifunctional auxiliary agent into a mixer with a stirring device, stirring for 20 minutes at the speed of 800r/min, adding 0.5 part of thickening agent, and stirring for 20 minutes to prepare a continuous phase for later use;

4) and (3) firstly weighing the granulation base paint, the protective colloid solution and the continuous phase according to the mass ratio of 3:1:1, granulating by using a dispersion disc, adding the continuous phase after granulation, and uniformly mixing to obtain the inorganic sand-in-water multicolor coating.

Comparative example 2

This comparative example is different from example 7 in that the diatomaceous earth of diatomaceous earth prepared in preparation example 1 was not included.

Comparative example 3

The difference between the comparative example and example 7 is that the rutile titanium dioxide in the base paint is replaced by anatase titanium dioxide.

Detection method

The application combines the national standard GB/T9779-.

Watch 1

By combining the examples 1-5 and the comparative example 1 and combining the table one, it can be seen that under the proportioning condition of the examples 1-5, the prepared diatomite sand-in-water multicolor paint has the normal appearance similar to stone, the formaldehyde purification function is remarkably stronger than that of the comparative example 1, and the formaldehyde purification function of the example 5 is better, so that the diatomite sand-in-water multicolor paint prepared under the proportioning condition of the example 5 has better performance.

In combination with examples 5-6 and Table I, it can be seen that the paint finally prepared by using the NXZ defoamer and the T115 defoamer has better surface drying time, coating film appearance, water resistance and alkali resistance, so that the silicone modified mineral oil defoamer and the polyether modified silicone defoamer are suitable for the paint containing diatomite.

Combining example 5 and example 7, and combining table one, it can be seen that the surface drying time of example 7 is shorter and the formaldehyde purification function is stronger, which indicates that 2-amino-2-methyl-1-propanol has an important influence on improving the comprehensive performance of the diatomite sand-in-water multicolor paint.

The combination of example 5 and example 8 and the first table shows that the appearance of example 5 is better and the combination property is better, which indicates that the stability of the diatomite sand-in-water multicolor paint can be improved by using the water-soluble hydroxyethyl cellulose and the hydrophobically modified hydroxyethyl cellulose together.

Combining example 5 and example 9, and the first table, it can be seen that example 5 has a greater formaldehyde scavenging capacity, which indicates that the coating prepared with the addition of microwave acid treated diatomaceous earth has a greater formaldehyde scavenging capacity than the coating prepared with the addition of diatomaceous earth feedstock.

By combining the example 5 and the comparative examples 2 to 3 and combining the table I, it can be seen that the diatomite and the rutile type titanium dioxide have important influence on the appearance and the formaldehyde purification function of the prepared diatomite sand-in-water multicolor paint, and when the diatomite and the rutile type titanium dioxide exist simultaneously, the prepared diatomite sand-in-water multicolor paint has better appearance and formaldehyde purification function.

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 novel diatomite sand-in-water multicolor paint is characterized by being prepared from the following raw materials in parts by weight: 40-80 parts of base paint, 10-30 parts of continuous phase and 10-30 parts of granulating solution, wherein the base paint is prepared from the following raw materials in parts by weight: 600 parts of 500-containing water, 750 parts of 600-containing quartz sand, 350 parts of 250-containing styrene-acrylic emulsion, 40-60 parts of diatomite, 20-30 parts of protective adhesive, 6-18 parts of cellulose, 2-8 parts of rutile titanium dioxide, 1-4 parts of dispersing agent, 12-18 parts of film-forming assistant and 1-4 parts of defoaming agent.

2. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the base paint is prepared from the following raw materials in parts by weight: 570 parts of water 550-containing material, 700 parts of quartz sand 640-containing material, 320 parts of styrene-acrylic emulsion 280-containing material, 48-52 parts of diatomite, 23-27 parts of protective adhesive, 10-14 parts of cellulose, 4-6 parts of rutile titanium dioxide, 2-3 parts of dispersing agent, 14-16 parts of film-forming additive and 2-3 parts of defoaming agent.

3. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the defoaming agent is one of organic silicon modified mineral oil defoaming agent or polyether modified organic silicon defoaming agent.

4. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the base paint also comprises 1.2-1.8 parts of pH regulator, and the pH regulator is 2-amino-2-methyl-1-propanol.

5. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the cellulose is a combination of water-soluble hydroxyethyl cellulose and hydrophobically modified hydroxyethyl cellulose.

6. The novel diatomite sand-in-water multicolor paint according to claim 1, wherein the base paint is prepared according to the following method:

preparing required raw materials according to the weight ratio;

under the condition of stirring, adding cellulose, a dispersing agent and a defoaming agent into water, and uniformly stirring to obtain a mixed solution;

under the condition of stirring, adding diatomite and rutile titanium dioxide into the mixed solution, and uniformly stirring to obtain a precursor solution;

7. The novel diatomite sand-in-water multicolor paint according to claim 6, wherein the diatomite is previously subjected to the following treatments: mixing a kieselguhr raw material with 35% -45% sulfuric acid solution to obtain a material A, performing microwave treatment on the material A for 45-65min under the microwave power of 220-420W, and filtering, washing and drying to obtain the kieselguhr.

8. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the continuous phase is prepared according to the following method: adding 4-8 parts of hydrophobic alkali swelling thickener into 500 parts of water of 400-one according to the weight ratio under the stirring condition, and uniformly stirring; and then adding 1-3 parts of 2-amino-2-methyl-1-propanol, stirring uniformly, then sequentially adding 1-2 parts of organic silicon modified mineral oil defoaming agent, 550 parts of phenylpropyl emulsion and 20-30 parts of film-forming auxiliary agent, and stirring uniformly at normal temperature to obtain a continuous phase.

9. The novel diatomite sand-in-water multicolor paint of claim 1, wherein: the granulation solution is prepared from the following raw materials in parts by weight: 60-80 parts of water, 8-12 parts of 2% xanthan gum aqueous solution and 18-22 parts of protective gum.

10. The method for preparing a novel diatomite sand-in-water multicolor paint according to any one of claims 1 to 9, characterized by comprising the following steps:

mixing the base paint, the continuous phase and the granulating solution according to the proportion, and uniformly stirring;