CN114410167B - High-strength and high-toughness sand-in-water colorful coating and preparation method thereof - Google Patents

Abstract

The invention discloses a high-strength and high-toughness sand-in-water multi-color coating and a preparation method thereof. The sand-in-water multi-color coating comprises the following components in parts by weight: 20-30 parts of colorful protective glue solution, 50-60 parts of toning base paint part and 20-30 parts of colorful continuous phase; the color base paint comprises the following components in parts by weight: 30-45 parts of solvent, 5-10 parts of protective glue, 15-45 parts of first emulsion, 0.5-1.2 parts of cellulose, 10-25 parts of filler, 0.5-1.5 parts of first thickener, 22-54.7 parts of functional additives and 25-50 parts of quartz sand; cellulose includes the following components by weight: 0.3-0.6 parts of hydrophobically modified olefin Synthetic cellulose ether and 1.2-1.6 parts of hydrophobically modified hydroxyethyl cellulose; fillers include at least one of kaolin, talcum powder, mica powder and Kaitai micropowder; the color point is not fragile when spraying, easy to apply, and the effect is maintained Consistent, high degree of simulation.

Description

High-strength and high-toughness sand-in-water colorful coating and preparation method thereof

technical field

The invention relates to the technical field of coatings, in particular to a high-strength and high-toughness sand-in-water multi-color coating and a preparation method thereof.

Background technique

At present, real stone paint is widely used in the architectural coatings market. Real stone paint is a kind of paint with a decorative effect similar to marble and granite. It is mainly formulated with natural stone powder of various colors. The buildings decorated with real stone paint have natural The real natural color gives people an elegant, harmonious and solemn aesthetic feeling, and is suitable for indoor and outdoor decoration of various buildings. Especially when it is decorated on curved buildings, it is vivid and lifelike, and has an effect of returning to nature. However, the color difference of its core raw material natural colored sand is serious, which affects the visual sensory effect of real stone paint, and real stone paint needs to be matched with different colored sands to imitate the stone effect. When there are large color spots in the paint, the real stone paint cannot completely imitate the stone effect.

Therefore, in view of the above-mentioned shortcomings of real stone paint, sand-in-water multi-color coatings came into being. Compared with other coatings, sand-in-water multi-color coatings have a good decorative effect and can highlight the simple, beautiful, elegant and luxurious buildings. The texture is natural, smooth and seamlessly blended, which can be widely used for indoor and outdoor wall decoration.

Water-in-sand multi-color paint can better imitate the color spots of various colors. The effect after spraying is uneven, which is closer to the surface effect of stone, but its spraying requires workers to have rich experience, because the current water-in-sand multi-color paint The tolerance is not enough, the specific performance is as follows: the spraying air pressure should be strictly controlled, if the air pressure is too small, the color spots will not be easy to flatten, the unevenness of the color particles will increase, which will affect the imitation stone effect, and the consumption will increase at the same time, if the air pressure is too high, the color spots will It is easy to be broken, resulting in blurred overall effect and poor imitation stone effect.

Contents of the invention

The present invention aims at the above-mentioned problems existing in the existing sand-in-water multi-color paint, and the present invention provides a high-strength and high-toughness type sand-in-water multi-color paint. Good toughness, wide range of air pressure, no need for experienced operators to operate.

One aspect of the present invention provides a high-strength and high-toughness type sand-in-water colorful coating, comprising the following components in parts by weight: 20-30 parts of colorful protective glue solution, 50-60 parts of toning base paint and 20-30 parts of colorful continuous phase share;

Wherein, the toning base paint comprises the following components by weight: 30-45 parts of solvent (such as: deionized water), 5-10 parts of protective glue (such as: S482 solution with a mass fraction of 7%), the first emulsion ( Such as: 15-45 parts of water-based colorful silicone acrylic emulsion (RS3799) of Bardford Company, 0.5-1.2 parts of cellulose, 10-25 parts of filler, 0.5-1.5 parts of the first thickener, and 22-54.7 parts of functional additives And quartz sand (such as: snowflake white quartz sand, Jiacheng Mining 80-120 mesh natural colored sand) 25-50 parts;

EHM 500)和1.2-1.6份疏水改性羟乙基纤维素(如：亚什兰公司的疏水改性羟乙基纤维素Natrosol HE10K)，疏水改性缔合型纤维素醚和疏水改性羟乙基纤维素的质量比为1:3-4。Wherein, the cellulose comprises the following components by weight: 0.3-0.6 parts of hydrophobically modified associative cellulose ether (such as: the hydrophobically modified associative cellulose ether of Akzo Nobel Company)

EHM 500) and 1.2-1.6 parts of hydrophobically modified hydroxyethyl cellulose (such as: Ashland's hydrophobically modified hydroxyethyl cellulose Natrosol HE10K), hydrophobically modified associative cellulose ether and hydrophobically modified hydroxyethyl cellulose The mass ratio of ethyl cellulose is 1:3-4.

In the present invention, on the one hand, after the hydrophobically modified associative cellulose ether is thickened in the water phase, the molecular chain of the hydrophobically modified associative cellulose ether expands to absorb and lock water, and at the same time, the hydrophobic groups on the molecular chain and the filler , the combination of the first emulsion, so that the physical cross-linking structure is formed in the color base paint, which increases the strength and toughness of the color point; on the other hand, the hydrophobically modified hydroxyethyl cellulose molecular chain provides more hydrophobic groups, These groups are not only deeply combined with the filler and the first emulsion, but also bonded and intertwined with the hydrophobically modified associative cellulose ether molecular chain groups, so that the color base paint has stronger strength and flexibility; the last two Between cellulose and the first emulsion, between two kinds of cellulose, between two kinds of cellulose and fillers, and between two kinds of cellulose functional additives form a three-dimensional network of bridge links, which further increases the cohesive strength and Tough type, so that the color dots are not easy to break.

Preferably, the first thickener includes the following components by weight: 0.3-0.5 parts of hydrophobic alkali-swellable thickener (such as: Dow's hydrophobically modified alkali-soluble emulsion thickener ACRYSOL TT-935 ) and 0.5-1.2 parts of hydrophobically modified strongly associative highly pseudoplastic amino thickener (such as BYK’s comb-like hydrophobically modified strongly associatively highly pseudoplastic amino thickener Optiflo TVS); hydrophobically modified strongly associative amino thickener Optiflo TVS Hegao Pseudoplastic Amino Thickener has more polymer hydrophobic chain end contacts, these contacts connect the hydrophilic and hydrophobic components of the entire base paint, stabilize the whole system and form a polymer network at the same time, enhance the strength and toughness, and make colorful Lacquer dot spray adheres to hard walls and is not easy to explode.

As preferably, the colorful protective colloid solution includes the following components by weight: 90-95 parts of solvent (such as: deionized water), protective rubber powder (such as: a special modified synthetic sheet silicon Lithium magnesium acid S-482) 2-10 parts, colorful anti-sedimentation agent (such as: modified bentonite OPTIGEL WX of Guangzhou Qingfeng Chemical Industry) 0.1-0.5 parts and cross-linking agent (such as: Guangdong Weixiang non-ionic WX199) 0.1- 0.5 servings.

Preferably, the protective rubber powder includes sheet lithium magnesium silicate.

Preferably, the filler includes at least one of kaolin, talc powder, mica powder and kelp powder, preferably a mixture of the four.

Fillers include kaolin (such as: Inner Mongolia Chao brand calcined kaolin DG80), talc powder (such as: talc powder CMS-666 from Heshan Chemical Industry), mica powder (such as: Cirrus mica powder GM-900 from Gree Mining) and Kaitai micropowder (such as: at least one of Kaitai Micropowder AB-700 of Aobang Company), preferably kaolin 4-5 parts by weight, talcum powder 5-6 parts by weight, mica powder 4-6 parts by weight and Kaitai Micropowder 5-8 A mixture formed in parts by weight; mica powder has stickiness and anti-stripping properties; talc powder is a radial, fibrous and sheet-like structure aggregate, which can intersect with other fillers and polymers to enhance strength; the main component of Kaitai micropowder is dioxide Silicon and aluminum oxide, composed of particles with an average particle size of less than 4um and containing 6wt% nano-sized particles, these nano-sized particles have rigidity, enhance the strength of the base paint, and the tiny particles can also provide more hydrophobic base bonding points, At the same time, it has a large specific surface area, which not only provides itself with good bonding ability, but also can promote the network combination of emulsion, filler and additives used in this scheme, so that the color dots are not easy to break after high shear force.

As preferably, the functional auxiliary agent includes the following components by weight: 0.1-0.5 parts of antifungal agent (such as: the compound Lonzaserve 940 of carbendazim, diuron and isothiazolinone of Lonza Company), disperse Agent (such as: a hydrophobically modified polyacrylate ammonium salt dispersant (OROTANTM) CA-2500 of Dow) 0.1-2 parts, defoamer (such as: SN-DEFOAMERNXZ of Corning Company and/or FoamStar of Corning Company A10) 0.5-1.5 parts, pH regulator (such as: 2-amino-2-methyl-1-propanol AMP-95 of Dow Chemical) 0.1-0.8 parts, film-forming aid (such as: Eastman Company 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate TEXANOL alcohol ester 12) 0.5-1.5 parts, antifreeze agent (such as: propylene glycol produced by Xingyang Chemical) 0.5-1.5 parts, 0.1-1 part of fungicide (such as: ROCIMA 562) and 0.1-0.4 part of colorful wetting agent (such as: G-399 of Shanghai Grid International Trade Co., Ltd.) make the coating function more perfect.

Preferably, the colorful continuous phase includes the following components by weight: 15-25 parts of solvent (such as: deionized water), 0.5-0.8 parts of bactericide (such as: ROCIMA 562), the second thickener (such as : Dow's hydrophobically modified alkali-soluble emulsion thickener ACRYSOL TT-935 and BYK's comb-shaped hydrophobically modified strong association highly pseudoplastic amino thickener OptifloTVS) 0.4-0.7 parts, organic bentonite (such as : Shanghai grid international trade bentonite MZ) 0.1-1 part, the second emulsion (such as: Lin Run silicon acrylic emulsion LR7115 and Zhao or pure acrylic emulsion POLYSOL AP 4765 or a mixture of the two at a mass ratio of 1:1, preferably A mixture of the two) 55-70 parts, film-forming aids (such as: Eastman 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate TEXANOL alcohol ester twelve) 3 -10 parts, antifreeze (such as: propylene glycol produced by Xingyang Chemical) 5-10 parts and pH regulator (such as: 2-amino-2-methyl-1-propanol AMP-95 from Dow Chemical) 0.1- 0.5 part makes the function of the coating more perfect; the second emulsion and the hydrophobically modified associative cellulose ether undergo an association reaction and become one, which further increases the cohesive strength and toughness of the color dot, making the color dot not easy to break.

Beneficial effects of the present invention: under the premise of not increasing the amount of protective rubber powder, the reaction, bonding, water retention and coarse change characteristics of cellulose can be used to improve the cohesive strength and toughness of color dots; kaolin, mica powder and talcum powder can be used As well as the functional characteristics of Kaitai micropowder, it is the first time to mix and match four kinds of fillers to improve the strength of color dots; using hydrophobic modified thickener and amino thickener, the components are connected to form a polymer network, and the strength and toughness are improved. Both can be improved, so it is not easy to be crushed in the material tube when the color dot is sprayed, and it is resistant to high shear force and not brittle when sprayed under high pressure, and it is not brittle when it is sprayed on the wall and impacted, which has obvious technical and economic benefits.

The invention also discloses a preparation method of a high-strength and high-toughness sand-in-water multi-color coating, which comprises the following steps:

Preparation of Protective Colloid Solution

In the state of stirring, add protective rubber powder, colorful anti-sedimentation agent and cross-linking agent to the solvent, and stir evenly;

Specifically, under stirring at 1300-1500 rpm, add protective rubber powder, colorful anti-sedimentation agent and cross-linking agent to the solvent, and stir for 30-40 minutes;

Prepare Tinted Base Paint

In the state of stirring, add bactericide, dispersant, first thickener, filler, defoamer, pH regulator, first emulsion, film-forming aid, colorful wetting agent, antifreeze, antifreeze to the solvent Mold agent, protective glue, cellulose and quartz sand, stir evenly;

Specifically, it can be:

(1) Under stirring at 300-500 rpm, add fungicide and dispersant and stir for 1-2min;

(2) With stirring at 600-800 rpm, add cellulose and stir for 5-10 minutes;

(3) Stir at 700-900 rpm, add fillers, some defoamers, and pH regulators, after adding, adjust the rotation speed to 1200-1500 rpm, and stir for 15-20 minutes;

(4) Stir at 1000-1200 rpm, add the first emulsion, film-forming aids, colorful wetting agents, antifreeze, anti-fungal agents, and remaining defoamers in sequence, and stir for 5-10 minutes;

(5) Stir at 1100-1300 rpm, add protective glue, and stir for 8-10 minutes;

(6) Stir at 1200-1400 rpm, add the first thickener, and stir for 3-5 minutes;

(7) Stir at 1000-1200 rpm, add snowflake white quartz sand, and stir for 2-3 minutes.

Preparation of colorful continuous phase

In the state of stirring, add organic bentonite, second emulsion, film-forming aid, antifreeze, pH regulator and second thickener to the solvent, and stir evenly;

Specifically, it can be:

(1) Under stirring at 900-1100 rpm, add organic bentonite to the solvent, and stir for 15-20min;

(2) Under stirring at 800-1000 rpm, add the second emulsion, film-forming aid, antifreeze, and pH regulator in sequence, and stir for 5-10 minutes;

(3) With stirring at 1100-1300 rpm, slowly add thickener and stir for 5-10 minutes.

Preparation of high-strength and high-toughness sand-in-water multi-color paint

The toning base paint and protective colloid solution are divided into several parts according to the weight ratio of 50-60:20-30, and the toning base paint described in each part is added to the protective colloid solution for granulation to obtain different particle sizes. color point;

Color dots with different particle sizes are mixed and then added to the colorful continuous phase, stirred evenly, and then thickened.

Specifically, it can be:

(1) according to the weight ratio of 20-30:50-60:20-30, successively weigh the colorful protective glue solution, the color base paint and the colorful continuous phase;

(2) Tone the toning base paint according to the required color, specifically, pigments and fillers can be used for toning;

(3) Add the toning base paint into the colorful protective glue solution under stirring at 400-700 rpm to granulate. If there are colored spots of different sizes, divide the toning base paint and the colorful protective glue solution into several parts in proportion. Granulate separately;

(4) under stirring at 400-700 rpm, all the colored spots are mixed together and stirred evenly, then add the continuous phase, and after stirring evenly, add a pH adjuster (such as: Dow Chemical's 2- Amino-2-methyl-1-propanol AMP-95) and 0.2wt% to 0.4wt% hydrophobically modified thickener ACRYSOL TT-935 are stirred and thickened to obtain a finished product, which is inspected and packaged.

Beneficial effects of the present invention: the above preparation method is simple and easy, and the obtained coating has stable properties.

Detailed ways

The embodiment discloses a high-strength and high-toughness sand-in-water multi-color coating, the components of which are shown in Table 1.

Table 1

EHM 500和1.2份Natrosol HE10K；多彩连续相中的增稠剂包括0.3份ACRYSOL TT-935和0.2份Optiflo TVS；In embodiment 1: cellulose comprises 0.3 parts

EHM 500 and 1.2 parts of Natrosol HE10K; thickeners in the colorful continuous phase include 0.3 parts of ACRYSOL TT-935 and 0.2 parts of Optiflo TVS;

EHM 500和1.4份Natrosol HE10K；多彩连续相中的增稠剂包括0.3份ACRYSOL TT-935和0.3份Optiflo TVS；In embodiment 2: cellulose comprises 0.4 part

EHM 500 and 1.4 parts of Natrosol HE10K; thickeners in the colorful continuous phase include 0.3 parts of ACRYSOL TT-935 and 0.3 parts of Optiflo TVS;

EHM 500和1.5份Natrosol HE10K；多彩连续相中的增稠剂包括0.4份ACRYSOL TT-935和0.2份Optiflo TVS；In embodiment 3: cellulose comprises 0.5 part

EHM 500 and 1.5 parts of Natrosol HE10K; thickeners in the colorful continuous phase include 0.4 parts of ACRYSOL TT-935 and 0.2 parts of Optiflo TVS;

A kind of preparation method of high-strength high-toughness type water-in-sand colorful coating in embodiment 1, concrete steps are as follows:

A. Preparation of colorful protective colloid solution

(1) Add deionized water into a suitable container and start stirring;

(2) Stir at 1300 rpm, add protective rubber powder, colorful anti-settling agent and cross-linking agent, and stir for 40 minutes;

(3) Fill the colorful protective glue solution into a suitable container for later use.

B. Preparation of tinted base paint

(1) Add deionized water into a suitable container, and start stirring;

(2) Under stirring at 300 rpm, add fungicide and dispersant evenly and slowly and stir for 1 min;

(3) Under stirring at 600 rpm, add cellulose thickener and stir for 5 minutes;

(4) Under stirring at 700 rpm, slowly add various fillers, some defoamers and pH regulators, after adding, adjust the rotation speed to 1200 rpm, and stir for 15 minutes;

(5) Under stirring at 1000 rpm, slowly add emulsion, film-forming aid, colorful wetting agent, antifreeze, anti-fungal agent and remaining defoamer in sequence, and stir for 5 minutes;

(6) Under stirring at 1100 rpm, add the protective gel solution and stir for 8 minutes;

(7) Under stirring at 1200 rpm, add hydrophobically modified alkali-swellable thickener and amino thickener for 3 minutes;

(8) At 1000 rpm, add snowflake white quartz sand and stir for 3 minutes;

(9) Fill the toning base paint into a suitable container for later use.

C. Preparation of colorful continuous phase

(1) Add deionized water into a suitable container;

(2) Under stirring at 900 rpm, add organic bentonite and stir for 20 minutes;

(3) Under stirring at 1000 rpm, add emulsion, film-forming aid, antifreeze and pH regulator in turn, and stir for 10 minutes;

(4) With stirring at 1100 rpm, slowly add the thickener and stir for 5 minutes.

(5) Fill the colorful continuous phase into a suitable container for later use.

D. Preparation of high-strength and high-toughness sand-in-water multi-color coatings

(1) Take colorful protective glue solution, toning base paint and colorful continuous phase successively for subsequent use;

(2) Tone the base paint according to the required color;

(3) Under stirring at 400 rpm, add the toning base paint to the colorful protective glue solution in proportion to granulate. If there are color spots of different sizes, divide the toning base material and protective glue into 3 parts in proportion, and each part Granulate separately;

(4) Mix all the color dots together under stirring at 400 rpm and stir evenly, then add the colorful continuous phase, and add 0.1wt% pH regulator and 0.2wt% hydrophobic modification thickener of the total mass of the topcoat after stirring evenly The agent ACRYSOL TT-935 is stirred and thickened, and the finished product is obtained and packaged after testing.

A preparation method of high-strength and high-toughness type sand-in-water colorful coating in embodiment 2, the concrete steps are as follows:

A. Preparation of colorful protective colloid solution

(1) Add deionized water into a suitable container and start stirring;

(2) Stir at 1400 rpm, add protective rubber powder, colorful anti-settling agent and cross-linking agent, and stir for 35 minutes;

(3) Fill the colorful protective glue solution into a suitable container for later use.

B. Preparation of tinted base paint

(1) Add deionized water into a suitable container, and start stirring;

(2) Under stirring at 400 rpm, add fungicide and dispersant evenly and slowly and stir for 2 minutes;

(3) Under stirring at 700 rpm, add cellulose thickener and stir for 8 minutes;

(4) Under stirring at 800 rpm, slowly add various fillers, some defoamers and pH regulators, after adding, adjust the rotation speed to 1350 rpm, and stir for 18 minutes;

(5) Under stirring at 1100 rpm, slowly add emulsion, film-forming aids, colorful wetting agents, antifreeze, antifungal agents and remaining defoamers in sequence, and stir for 4 minutes;

(6) Under stirring at 1200 rpm, add the protective gel solution and stir for 10 minutes;

(7) Under stirring at 1300 rpm, add hydrophobically modified alkali-swellable thickener and amino thickener for 4 minutes;

(8) At 1000 rpm, add snowflake white quartz sand and stir for 3 minutes;

(9) Fill the toning base paint into a suitable container for later use.

C. Preparation of colorful continuous phase

(1) Add deionized water into a suitable container;

(2) Under stirring at 1000 rpm, add organic bentonite and stir for 20 minutes;

(3) Under stirring at 900 rpm, add emulsion, film-forming aid, antifreeze and pH regulator in turn, and stir for 10 minutes;

(4) With stirring at 1200 rpm, slowly add the thickener and stir for 5 minutes.

(5) Fill the colorful continuous phase into a suitable container for later use.

D. Preparation of high-strength and high-toughness sand-in-water multi-color coatings

(1) Take colorful protective glue solution, toning base paint and colorful continuous phase successively for subsequent use;

(2) Tone the base paint according to the required color;

(3) Under stirring at 500 rpm, add the toning base paint to the colorful protective glue solution in proportion to granulate. If there are color spots of different sizes, divide the toning base material and protective glue into 3 parts in proportion, and each part Granulate separately;

(4) Mix all the color dots together under stirring at 550 rpm and stir evenly, then add the colorful continuous phase, and add 0.1wt% pH regulator and 0.4wt% hydrophobically modified thickener of the total mass of the topcoat after stirring evenly The agent ACRYSOL TT-935 is stirred and thickened, and the finished product is obtained and packaged after testing.

A preparation method of high-strength and high-toughness type sand-in-water multi-color coating in embodiment 3, the concrete steps are as follows:

A. Preparation of colorful protective colloid solution

(1) Add deionized water into a suitable container and start stirring;

(2) Stir at 1500 rpm, add protective rubber powder, colorful anti-settling agent and cross-linking agent, and stir for 40 minutes;

(3) Fill the colorful protective glue solution into a suitable container for later use.

B. Preparation of tinted base paint

(1) Add deionized water into a suitable container, and start stirring;

(2) Under stirring at 500 rpm, add fungicide and dispersant evenly and slowly and stir for 2 minutes;

(3) Under stirring at 800 rpm, add cellulose thickener and stir for 10 minutes;

(4) Under stirring at 900 rpm, slowly add various fillers, some defoamers and pH regulators, after adding, adjust the rotation speed to 1500 rpm, and stir for 20 minutes;

(5) Under stirring at 1200 rpm, slowly add emulsion, film-forming aids, colorful wetting agents, antifreeze, antifungal agents and remaining defoamers in sequence, and stir for 10 minutes;

(6) Under stirring at 1300 rpm, add the protective gel solution and stir for 10 minutes;

(7) Under stirring at 1400 rpm, add hydrophobically modified alkali-swellable thickener and amino thickener for 5 minutes;

(8) At 1200 rpm, add snowflake white quartz sand and stir for 2.5 minutes;

(9) Fill the toning base paint into a suitable container for later use.

C. Preparation of colorful continuous phase

(1) Add deionized water into a suitable container;

(2) Under stirring at 1100 rpm, add organic bentonite and stir for 20 minutes;

(3) Under stirring at 1000 rpm, add emulsion, film-forming aid, antifreeze and pH regulator in turn, and stir for 10 minutes;

(4) With stirring at 1300 rpm, slowly add the thickener and stir for 5 minutes.

(5) Fill the colorful continuous phase into a suitable container for later use.

D. Preparation of high-strength and high-toughness sand-in-water multi-color coatings

(1) Take colorful protective glue solution, toning base paint and colorful continuous phase successively for subsequent use;

(2) Tone the base paint according to the required color;

(3) Under stirring at 700 rpm, add the toning base paint to the colorful protective glue solution in proportion to granulate. If there are color spots of different sizes, divide the toning base material and protective glue into 3 parts in proportion, and each part Granulate separately;

(4) Mix all the color dots together under stirring at 700 rpm and stir evenly, then add the colorful continuous phase, and add 0.1wt% pH regulator and 0.3wt% hydrophobically modified thickener of the total mass of the topcoat after stirring evenly The agent ACRYSOL TT-935 is stirred and thickened, and the finished product is obtained and packaged after testing.

The comparison example is set as follows, see Table 2 for details.

Table 2

EHM500，不添加Natrosol HE10K；比较例3中，仅添加Natrosol HE10K，不添加

EHM500。In Comparative Example 1, ordinary cellulose was used instead of cellulose; in Comparative Example 2, only

EHM500, without adding Natrosol HE10K; in comparative example 3, only adding Natrosol HE10K, without adding

EHM500.

table 3

EHM 500和1.2份Natrosol HE10K。Among comparative examples 4-7: cellulose includes 0.3 parts

EHM 500 and 1.2 parts Natrosol HE10K.

Table 4

In Comparative Examples 1-10, the thickener in the colorful continuous phase includes 0.3 parts of ACRYSOL TT-935 and 0.2 parts of Optiflo TVS;

In Comparative Examples 1-10, the preparation method of the finished paint is the same as that of Example 1, which is omitted here and will not be repeated.

According to the relevant standards in HG/T 4343-2012 "Waterborne Colorful Architectural Coatings", the test results are as follows:

The technical performance index and experimental data of the product that each embodiment of table 5 makes

Table 6 Comparative Example 1-3 technical performance index and experimental data

Table 7 Comparative Example 4-7 technical performance index and experimental data

Table 8 Comparative Examples 8-10 technical performance index and experimental data

As can be drawn from the test results of the examples in Table 5 and the comparative examples in Table 6, Comparative Example 1 uses common cellulose, which cannot provide better strength to the color dots, and the storage performance does not pass, and the spraying is broken. Comparative Examples 2 and 2 Comparative Example 3 uses the modified cellulose of the present invention, which has better cross-linking strength and toughness. After the atmospheric pressure spray test, it basically meets the expected goal. It will be slightly broken when used alone, but the effect is not outstanding.

It can be drawn from the test results of the examples in Table 5 and the comparative examples in Table 7 that comparative example 4 uses conventional fillers, and subsidence occurs in thermal stability and low-temperature stability, and becomes unusable after a long time, and the construction test is fragile; comparative example 5 and Comparative Example 6 do not add talcum powder and Kaitai micropowder respectively, the cohesive strength is not enough, there are slight broken spots and texture is not strong; Comparative Example 7 does not add talcum powder and Kaitai micropowder, and its spraying test effect is the same as that of Comparative Example Compared with example 5 and example 6, the effect is worse, and the edge of the color point is broken. Therefore, the performance of the original paint, construction performance and paint film effect are very important when used with the filler.

From Table 5 embodiment and table 8 comparative example test result can draw, use common unmodified thickener, comparative example 8 storage can thicken, and effect is general, does not meet the requirement; Comparative example 9 uses modified thickener , the color point is too small, which affects the imitation stone effect; comparative example 10 basically meets expectations, but because each equipment is different and the site conditions are different, there are still risks, so the two thickeners need to be used together in the present invention. it is good.

To sum up, the raw materials of Examples 1-3 are well matched, the strength and toughness of the colored dots are improved, they can withstand spraying by an atmospheric pressure spraying machine, the construction tolerance is strengthened, the paint film protrudes consistently, and the imitation stone effect is good, which can achieve the expected goal.

Check the limit of harmful substances in the high-strength and high-toughness type sand-in-water multi-color coating in Examples 1-3, and meet the standard requirements, as shown in Table 9 below:

Table 9 Embodiment 1-3 environmental protection performance index and experimental data

Based on the test results of the above-mentioned implementation cases, it can be seen that the high-strength and high-toughness sand-in-water colorful coatings prepared by the present invention have been implemented through the technical scheme, and the experimental results have reached the expected purpose, and the strength and toughness of the sand-in-water color spots have been improved. The color dots are not fragile, easy to construct, consistent in effect, high in simulation, and meet the performance standard HG/T 4343-2012 "Water-based Colorful Architectural Coatings" and the environmental protection standard GB24408-2009 "Limits of Harmful Substances in Architectural Exterior Wall Coatings" Require.

Finally, it should be noted that: the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. The high-strength high-toughness sand-in-water multicolor paint is characterized by comprising the following components in parts by weight: 20-30 parts of colorful protective glue solution, 50-60 parts of color matching base paint and 20-30 parts of colorful continuous phase;

the toning base paint comprises the following components in parts by weight: 30-45 parts of solvent, 5-10 parts of protective adhesive, 15-45 parts of first emulsion, 0.5-1.2 parts of cellulose, 10-25 parts of filler, 0.5-1.5 parts of first thickening agent, 22-54.7 parts of functional auxiliary agent and 25-50 parts of quartz sand;

the cellulose comprises the following components in parts by weight: 0.3-0.6 part of hydrophobically modified associative cellulose ether and 1.2-1.6 parts of hydrophobically modified hydroxyethyl cellulose;

the filler consists of 4-8 parts of kaolin, 5-8 parts of talcum powder, 3-9 parts of mica powder and 5-10 parts of Ketai micro powder by weight;

the first thickening agent comprises the following components in parts by weight: 0.3-0.5 part of hydrophobic alkali swelling thickener and 0.5-1.2 parts of hydrophobic modified strongly associated high pseudoplastic amino thickener.

2. The high-strength high-toughness sand-in-water multicolor paint of claim 1, wherein the multicolor protection glue solution comprises the following components in parts by weight: 90-95 parts of solvent, 2-10 parts of protective rubber powder, 0.1-0.5 part of colorful anti-settling agent and 0.1-0.5 part of cross-linking agent.

3. The high-strength high-toughness sand-in-water multicolor paint according to claim 2, wherein the protective rubber powder comprises flaky lithium magnesium silicate.

4. The high-strength high-toughness sand-in-water multicolor paint according to claim 1, wherein the functional auxiliary comprises the following components in parts by weight: 0.1-0.5 part of mildew preventive, 0.1-2 parts of dispersant, 0.5-1.5 parts of defoamer, 0.1-0.8 part of pH regulator, 0.5-1.5 parts of film-forming additive, 0.5-1.5 parts of antifreeze, 0.1-1 part of bactericide and 0.1-0.4 part of multicolor wetting agent.

5. The high-strength high-toughness sand-in-water multicolor paint according to claim 1 or 3, wherein the multicolor continuous phase comprises the following components in parts by weight: 15-25 parts of solvent, 0.5-0.8 part of bactericide, 0.4-0.7 part of second thickener, 0.1-1 part of organic bentonite, 55-70 parts of second emulsion, 3-10 parts of film-forming assistant, 5-10 parts of antifreezing agent and 0.1-0.5 part of pH regulator.

6. A method for preparing the high-strength high-toughness sand-in-water multicolor paint as claimed in any one of claim 4, which comprises the following steps:

preparation of a multicolor protective colloid solution

Under the stirring state, adding protective rubber powder, a colorful anti-settling agent and a cross-linking agent into the solvent, and uniformly stirring;

preparation of a tinting base paint

Adding a bactericide, a dispersing agent, a first thickening agent, a filler, a defoaming agent, a pH regulator, a first emulsion, a film-forming auxiliary agent, a multicolor wetting agent, an antifreezing agent, a mildew preventive, a protective adhesive, cellulose and quartz sand into a solvent under the stirring state, and uniformly stirring;

preparation of a multicolored continuous phase

Under the stirring state, adding organic bentonite, a second emulsion, a film forming aid, an antifreezing agent, a pH regulator and a second thickening agent into the solvent, and uniformly stirring;

preparation of high-strength high-toughness sand-in-water multicolor paint

Dividing the toning base paint and the multicolor protection glue solution into a plurality of parts according to the weight ratio of 50-60 to 20-30, and adding the toning base paint in each part into the multicolor protection glue solution for granulation to obtain color points with different particle sizes;

and mixing the colored dots with different particle sizes, adding the mixed colored dots into the colorful continuous phase, uniformly stirring and thickening.

7. The method for preparing the sand-in-water multicolor paint with high strength and high toughness as claimed in claim 6, wherein the method further comprises the step of thickening by using a hydrophobic modified thickener after mixing the color points with different particle sizes and adding the mixture into the multicolor continuous phase to stir uniformly.