CN114085583B

CN114085583B - Self-thickening multicolor paint and application thereof

Info

Publication number: CN114085583B
Application number: CN202111554354.7A
Authority: CN
Inventors: 许建明; 陈念; 谭振华; 程鑫; 张淑来
Original assignee: CARPOLY CHEMICAL GROUP CO LTD
Current assignee: Anhui Jiabaoli Technology Material Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-05
Anticipated expiration: 2041-12-17
Also published as: CN114085583A

Abstract

The invention relates to a self-thickening multicolor paint and application thereof. The self-thickening multicolor paint comprises a base paint, a granulating liquid, a self-thickening continuous phase and an inactive continuous phase which are mixed according to a specific component ratio, the color points prepared from the base paint and the granulating liquid are mixed with the self-thickening continuous phase and the inactive continuous phase step by step, the protective adhesive can perform directional controllable self-thickening reaction with the continuous phase, the viscosity of the paint is controllable, and the storage stability is good. The matting powder and the talcum powder in the self-thickening continuous phase and the non-active continuous phase have good dispersion and suspension properties, can perform a synergistic effect with emulsion in a coating system, improve the storage stability of the coating, and solve the problems of storage layering, construction sagging and the like of the multicolor coating. The self-thickening multicolor paint does not use an alkali swelling thickener, so that the paint has good water resistance and is not easy to whiten and foam when meeting water.

Description

Self-thickening multicolor paint and application thereof

Technical Field

The invention relates to the technical field of coatings, in particular to a self-thickening multicolor coating and application thereof.

Background

The water-in-water multicolor paint is driven by the real stone paint in the field of building exterior walls, is one of two exterior wall paints which are most widely applied at present, and has the advantages of high cost performance, environmental protection, light weight, vivid stone simulation effect and the like.

The multi-color paint is a metastable multiphase system obtained by uniformly dispersing color points in a continuous phase, and in order to simulate the stone effect and facilitate granulation, the color points are added with pigment fillers such as titanium dioxide and the like; the continuous phase is required to be uniform and transparent, and the color and the shape of the color dots are displayed to the maximum extent, so that the specific gravity of the color dots is higher than that of the continuous phase.

A large amount of associated alkali swelling thickening agents or polyurethane thickening agents are added into a continuous phase of the traditional multicolor paint to improve the viscosity, improve the storage stability of the multicolor paint and prevent color points from layering and sinking. However, the alkali swelling thickener has strong hydrophilicity, which can affect the water resistance of the colorful coating, and the coating can turn white and foam when meeting water. And the acrylic emulsion is adopted in the continuous phase of some multicolor coatings for thickening to improve the viscosity, but the thickening effect of the acrylic emulsion is difficult to control, and the stable storage of the multicolor coatings is not facilitated.

Disclosure of Invention

In view of the foregoing, there is a need for a self-thickening multicolor paint with good storage stability and water resistance, and applications thereof.

In one aspect of the invention, the invention provides a self-thickening multicolor paint, which comprises the following preparation raw materials: base paint, granulation liquid, self-thickening continuous phase and inactive continuous phase;

the base paint comprises the following components in parts by weight: 30-50 parts of water, 0.8-1.2 parts of cellulose, 3-10 parts of calcined kaolin, 0-3 parts of titanium dioxide, 30-50 parts of first emulsion, 0.16-0.64 part of lithium magnesium silicate-based protective adhesive and 0-3 parts of water-based color paste, wherein the pH value of the base paint is 8-10;

the granulation liquid comprises the following components in parts by weight: 92-96 parts of water and 4-8 parts of lithium-magnesium silicate-based protective adhesive;

the self-thickening continuous phase comprises the following components in parts by weight: 20 to 50 parts of water, 1 to 4 parts of flatting powder, 0.5 to 1 part of talcum powder, 40 to 80 parts of second emulsion and 0.3 to 1 part of silane coupling agent;

the inactive continuous phase comprises the following components in parts by weight: 20 to 50 parts of water, 1 to 4 parts of flatting powder, 0.5 to 1 part of talcum powder, 40 to 80 parts of third emulsion and 0.3 to 1 part of silane coupling agent;

wherein the first emulsion, the second emulsion, and the third emulsion are each independently selected from acrylate emulsions, and the first emulsion and the third emulsion and the lithium magnesium silicate based protective gum are not reactive, the second emulsion and the lithium magnesium silicate based protective gum are reactive; the self-thickening continuous phase does not contain the lithium magnesium silicate-based protective gum; the self-thickening multicolor paint does not contain an alkali swelling thickener;

the preparation method of the self-thickening multicolor paint comprises the following steps:

mixing and granulating the base paint and the granulating liquid to prepare the color dots;

mixing and thickening the color point and the self-thickening continuous phase;

mixing the non-reactive continuous phase with the color point that has been mixed thickened and the self-thickening continuous phase.

In some embodiments, the self-thickening multicolor paint comprises 30 to 50 parts by weight of the base paint; the mass portion of the granulating liquid is 15-25; the self-thickening continuous phase accounts for 10-30 parts by mass; the mass portion of the inactive continuous phase is 10-30.

In some of these embodiments, the first emulsion is a pure acrylic emulsion; the second emulsion and the third emulsion are each independently a silicone-acrylic emulsion.

In some of these embodiments, the matting powder is a vapor phase process-prepared silica.

In some of these embodiments, the base paint further comprises at least one of a first dispersant, a biocide, a defoamer, a film-forming aid, hollow glass microspheres, and a cryoprotectant;

the granulating liquid also comprises a bactericide;

the self-thickening continuous phase also comprises at least one of a second dispersing agent, a substrate wetting agent, a film-forming auxiliary agent, an antifreezing agent, a defoaming agent and a bactericide;

the inactive continuous phase further comprises at least one of a third dispersant, a substrate wetting agent, a film forming aid, an antifreeze, a defoamer and a bactericide.

In some embodiments, the base paint comprises 0.2 to 0.5 parts by weight of the first dispersant;

and/or the mass portion of the bactericide is 0.05 to 0.2;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the film-forming additive is 1-3;

and/or the hollow glass beads are 0.5 to 1.2 parts by weight;

and/or 0.5-2 parts of antifreezing agent.

In some embodiments, the self-thickening continuous phase comprises 1 to 4 parts by weight of the second dispersant;

and/or the base material wetting agent is 0.05 to 0.2 part by mass;

and/or the mass portion of the film-forming additive is 2-4;

and/or the mass part of the antifreezing agent is 1-2.5;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the bactericide is 0.05 to 0.2.

In some embodiments, the mass part of the third dispersing agent in the inactive continuous phase is 1 to 4 parts;

and/or the base material wetting agent is 0.05 to 0.2 part by mass;

and/or the mass portion of the film-forming additive is 2-4;

and/or the mass part of the antifreezing agent is 1-2.5;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the bactericide is 0.05 to 0.2.

In some embodiments, the lithium magnesium silicate-based protective gum is selected from at least one of GTS, LAPONITE RD and LAPONITE S482.

In some of these embodiments, the cellulose is selected from at least one of Natrosol HE 3KB, Natrosol 250HBR, and EBS 481 FQ.

In some of these embodiments, the silane coupling agent is selected from at least one of modified methoxy silane and ethoxy silane.

In some of these embodiments, the first dispersant is selected from at least one of a polyacrylic acid sodium salt dispersant and a polyacrylic acid ammonium salt dispersant.

In some of these embodiments, the second dispersant is selected from organic dispersants containing pigment affinic groups.

In some of these embodiments, the defoamer is selected from at least one of a mineral oil defoamer and a silicone defoamer.

In some of these embodiments, the biocide is a cason-type biocide.

In another aspect of the invention, there is also provided the use of the self-thickening multicolor paint described above in the preparation of architectural decorations.

The self-thickening multicolor paint comprises base paint, granulating liquid, a self-thickening continuous phase and an inactive continuous phase, wherein the color points are mixed with the self-thickening continuous phase and the inactive continuous phase step by step, the protective glue can perform directional controllable self-thickening reaction with the continuous phase, and the paint has controllable viscosity and good storage stability. The matting powder and the talcum powder in the self-thickening continuous phase and the non-active continuous phase have good dispersion and suspension properties, can perform a synergistic effect with emulsion in a coating system, improve the storage stability of the coating, and solve the problems of storage layering, construction sagging and the like of the multicolor coating. The self-thickening multicolor paint does not use an alkali swelling thickener, so that the paint has good water resistance and is not easy to whiten and foam when meeting water.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

One embodiment of the invention provides a self-thickening multicolor paint, which comprises the following raw materials: base paint, granulating liquid, a self-thickening continuous phase and an inactive continuous phase.

The base paint comprises the following components in parts by weight: 30 to 50 portions of water, 0.8 to 1.2 portions of cellulose, 3 to 10 portions of calcined kaolin, 0 to 3 portions of titanium pigment, 30 to 50 portions of first emulsion, 0.16 to 0.64 portion of lithium magnesium silicate-based protective adhesive and 0 to 3 portions of water-based color paste, wherein the pH value of the base paint is 8 to 10.

The granulation liquid comprises the following components in parts by weight: 92-96 parts of water and 4-8 parts of lithium-magnesium silicate-based protective adhesive.

The self-thickening continuous phase comprises the following components in parts by weight: 20 to 50 portions of water, 1 to 4 portions of extinction powder, 0.5 to 1 portion of talcum powder, 40 to 80 portions of second emulsion and 0.3 to 1 portion of silane coupling agent.

The inactive continuous phase comprises the following components in parts by weight: 20 to 50 portions of water, 1 to 4 portions of extinction powder, 0.5 to 1 portion of talcum powder, 40 to 80 portions of third emulsion and 0.3 to 1 portion of silane coupling agent.

The first emulsion, the second emulsion and the third emulsion are respectively and independently selected from acrylate emulsions, the first emulsion, the third emulsion and the lithium magnesium silicate-based protective adhesive have no reactivity, and the second emulsion and the lithium magnesium silicate-based protective adhesive have reactivity; the self-thickening continuous phase does not contain lithium magnesium silicate-based protective glue. The self-thickening multicolor paint does not contain an alkali swelling thickener.

In the technical scheme of the invention, the lithium magnesium silicate-based protective adhesive can interact with the second emulsion to form a 'cabin structure', so that the self-thickening effect is achieved.

The preparation method of the self-thickening multicolor paint comprises the following steps S100-S300.

Step S100: and mixing and granulating the base paint and the granulating liquid to prepare the color dots.

Step S200: mixing the color point with the self-thickening continuous phase for thickening.

Step S300: mixing the non-active continuous phase with the color point subjected to mixing thickening and the self-thickening continuous phase.

In some of these embodiments, the first emulsion is a pure acrylic emulsion; the second emulsion and the third emulsion are each independently a silicone-acrylic emulsion. Further, the first emulsion is selected from the group consisting of bardifos RS-2798. The second emulsion is selected from the group consisting of Bardful RS-3799S. The third emulsion is selected from Badfy RS-3799A.

The lithium magnesium silicate-based protective adhesive can wrap the base paint to form a flexible protective film on the surface, and the base paint and the granulating liquid are mixed and granulated to prepare the color dots in the multicolor paint. In some embodiments, the lithium magnesium silicate-based protective gum is selected from at least one of GTS, LAPONITE RD and LAPONITE S482.

The silane coupling agent can increase the crosslinking between the colorful coating and the base material, improve the adhesive force of the paint film and solve the problem that the colorful paint of the paint film is swollen by water. In some of these embodiments, the silane coupling agent is selected from at least one of modified methoxysilanes and ethoxysilanes. Further, the silane coupling agent is at least one selected from the group consisting of Z6040, KBM-403, and A-187.

In some of these embodiments, the matting agent is a vapor phase process-prepared silica. Optionally, the matting powder is selected from at least one of TS-100, OK520 and 3300. The silica prepared by the gas phase method has good suspension dispersibility in a continuous phase, can cooperate with other components in a self-thickening system, improves the storage stability of the colorful coating, and overcomes the defects of layering storage, sagging construction and the like of the colorful coating. The flatting powder can also improve the hardness of a paint film, solve the problem that an acrylate emulsion in the colorful paint is softened and sticky at high temperature, improve the stain resistance and color durability of the paint film and prolong the service life of the paint film. Meanwhile, the addition of the matting powder enables the multicolor paint to have a matte texture.

In some embodiments, the self-thickening multicolor paint comprises 30 to 50 parts by weight of base paint; the mass portion of the granulating liquid is 15 to 25; the mass portion of the self-thickening continuous phase is 10-30; the mass portion of the inactive continuous phase is 10 to 30 portions. The self-thickening multicolor paint with the component proportion has good storage stability, good paint film appearance, good acid and alkali resistance, good water resistance and the like.

Further, in the self-thickening multicolor paint, the mass part of the base paint is 35 to 45; the mass portion of the granulating liquid is 18 to 22; the mass portion of the self-thickening continuous phase is 15 to 25; the mass portion of the inactive continuous phase is 15 to 25 portions.

In some embodiments, in step S100, the rotation speed of the mixing granulation is 300rpm to 500 rpm. The mixing and granulating time is 20-120 s.

In some embodiments, in step S200, the color point and the self-thickening continuous phase are mixed at a rotation speed of 50rpm to 100rpm for 10min to 30 min.

In some embodiments, after the mixing thickening of step S200, the viscosity of the mixing system is 80KU to 100 KU.

In some of these embodiments, the base paint further comprises at least one of a first dispersant, a biocide, a defoamer, a film-forming aid, hollow glass microspheres, and an antifreeze.

In some of these embodiments, the first dispersant is selected from at least one of a polyacrylic acid sodium salt dispersant and a polyacrylic acid ammonium salt dispersant. The first dispersant can improve the compatibility of the base paint and the emulsion and improve the storage stability of the self-thickening multicolor paint. In some embodiments, the first dispersant is present in the base paint in an amount of 0.2 to 0.5 parts by weight.

The bactericide has the functions of sterilization and corrosion prevention. Optionally, the biocide is a cason-type biocide. In some embodiments, the mass portion of the bactericide in the base paint is 0.05 to 0.2.

In some of these embodiments, the defoamer is selected from at least one of a mineral oil defoamer and a silicone defoamer. In some of the examples, the mass fraction of the defoamer in the base paint is 0.05 to 0.2.

The film forming additive has the function of improving the film forming performance of the coating. In an embodiment of the invention, the coalescent is selected from the group consisting of alcohol esters twelve. In some of these examples, the film-forming aid is present in the base paint in an amount of 1 to 3 parts by weight.

The hollow glass beads are hollow glass beads, and the internal medium of the hollow glass beads is air, so that the hollow glass beads have lower density; the proportion of the base paint can be reduced by adding the hollow glass beads into the base paint, and the color dots obtained by mixing and granulating the base paint and the granulating liquid have smaller proportion and are not easy to settle, so that the storage stability of the multicolor paint is improved. In addition, the hollow glass beads also have a good heat insulation effect, and the multicolor paint has the effects of energy conservation and environmental protection when being added into the multicolor paint. In some examples, the mass part of the hollow glass beads in the base paint is 0.5 to 1.2 parts. Alternatively, the hollow glass microspheres are selected from IM16K produced by 3M.

The anti-freezing agent can improve the anti-freezing performance of the self-thickening multicolor paint and has the function of reducing the freezing temperature of the paint. In an embodiment of the invention, the antifreeze agent is selected from ethylene glycol. In some of the examples, the base paint contains 0.5 to 2 parts by weight of an antifreeze.

Further, the base paint comprises the following components in parts by weight: 30 to 50 parts of water, 0.8 to 1.2 parts of cellulose, 3 to 10 parts of calcined kaolin, 0 to 3 parts of titanium dioxide, 30 to 50 parts of first emulsion, 0.16 to 0.64 part of lithium-magnesium silicate-based protective adhesive, 0 to 3 parts of water-based color paste, 0.2 to 0.5 part of first dispersing agent, 0.05 to 0.2 part of bactericide, 0.05 to 0.2 part of defoaming agent, 1 to 3 parts of film-forming assistant, 0.5 to 1.2 parts of hollow glass bead and 0.5 to 2 parts of antifreezing agent, wherein the pH of the base paint is 8 to 10. The pH of the base paint is adjusted by means of a functional adjuvant, in the present embodiment, the model of which is AMP-95 (Dow).

In some of these embodiments, the granulation liquid further comprises a biocide. Optionally, the biocide is a cason-type biocide.

In some embodiments, the granulation liquid comprises, in parts by mass: 92-96 parts of water, 4-8 parts of lithium-magnesium silicate-based protective glue and 0.05-0.2 part of bactericide.

In some of these embodiments, the self-thickening continuous phase further comprises at least one of a second dispersant, a substrate wetting agent, a film-forming aid, an antifreeze, an antifoam, and a biocide.

In some of these embodiments, the second dispersant is selected from organic dispersants containing pigment affinic groups. Further, the second dispersant is at least one selected from the group consisting of DSIPER BYK-190, DSIPER BYK-191 and DISPER BYK 192. The second dispersant contains pigment affinity group, so that the second dispersant has better compatibility with the color point and can improve the storage stability of the self-thickening multicolor paint. In some of the examples, the second dispersant is present in the self-thickening continuous phase in an amount of 1 to 4 parts by weight.

In some of these examples, the mass fraction of the substrate wetting agent in the self-thickening continuous phase is from 0.05 parts to 0.2 parts.

The film forming additive has the function of improving the film forming performance of the coating. In an embodiment of the invention, the coalescent is selected from the group consisting of alcohol esters twelve. In some of these embodiments, the film-forming aid is present in the self-thickening continuous phase in an amount of 2 to 4 parts by weight.

The anti-freezing agent can improve the anti-freezing performance of the self-thickening multicolor paint and has the function of reducing the freezing temperature of the paint. In an embodiment of the invention, the antifreeze is selected from ethylene glycol. In some of the examples, the antifreeze agent is present in the self-thickening continuous phase in an amount of 1 to 2.5 parts by weight.

In some of these embodiments, the defoamer is selected from at least one of a mineral oil defoamer and a silicone defoamer. In some of these examples, the defoamer is present in the self-thickening continuous phase in an amount of 0.05 to 0.2 parts by weight.

The bactericide has the functions of sterilization and corrosion prevention. Optionally, the biocide is a cason-type biocide. In some embodiments, the bactericide is present in the self-thickening continuous phase in an amount of 0.05 to 0.2 parts by weight.

Further, the self-thickening continuous phase comprises the following components in parts by mass: 20 to 50 portions of water, 1 to 4 portions of flatting powder, 0.5 to 1 portion of talcum powder, 40 to 80 portions of second emulsion, 0.3 to 1 portion of silane coupling agent, 1 to 4 portions of second dispersing agent, 0.05 to 0.2 portion of base material wetting agent, 2 to 4 portions of film-forming additive, 1 to 2.5 portions of antifreezing agent, 0.05 to 0.2 portion of defoaming agent and 0.05 to 0.2 portion of bactericide.

In some of these embodiments, the inactive continuous phase further includes at least one of a third dispersant, a substrate wetting agent, a film-forming aid, an antifreeze, an antifoam agent, and a biocide.

In some of these embodiments, the third dispersant is selected from organic dispersants containing pigment affinic groups. Further, the third dispersant is at least one selected from the group consisting of DSIPER BYK-190, DSIPER BYK-191 and DISPER BYK 192. The third dispersant contains pigment affinity group, so that the third dispersant has better compatibility with the color point and can improve the storage stability of the self-thickening multicolor paint. In some of the examples, the mass part of the third dispersing agent in the inactive continuous phase is 1 to 4 parts.

In some of the examples, the mass fraction of the substrate wetting agent in the inactive continuous phase is 0.05 parts to 0.2 parts.

The film forming additive has the function of improving the film forming performance of the coating. In an embodiment of the invention, the coalescent is selected from the group consisting of alcohol esters twelve. In some of these embodiments, the film-forming aid is present in the inactive continuous phase in an amount of 2 to 4 parts by weight.

The anti-freezing agent can improve the anti-freezing performance of the self-thickening multicolor paint and has the function of reducing the freezing temperature of the paint. In an embodiment of the invention, the antifreeze agent is selected from ethylene glycol. In some of the examples, the mass part of the antifreeze is 1 to 2.5 parts in the inactive continuous phase.

In some of these embodiments, the defoamer is selected from at least one of a mineral oil defoamer and a silicone defoamer. In some of the examples, the mass fraction of the defoamer in the non-active continuous phase is between 0.05 and 0.2 parts.

The bactericide has the functions of sterilization and corrosion prevention. Optionally, the biocide is a cason-type biocide. In some embodiments, the mass portion of the bactericide in the inactive continuous phase is 0.05 to 0.2 parts.

Further, the inactive continuous phase comprises the following components in parts by weight: 20 to 50 portions of water, 1 to 4 portions of flatting powder, 0.5 to 1 portion of talcum powder, 40 to 80 portions of third emulsion, 0.3 to 1 portion of silane coupling agent, 1 to 4 portions of third dispersing agent, 0.05 to 0.2 portion of base material wetting agent, 2 to 4 portions of film-forming additive, 1 to 2.5 portions of antifreezing agent, 0.05 to 0.2 portion of defoaming agent and 0.05 to 0.2 portion of bactericide.

The invention also provides application of the self-thickening multicolor paint in preparing architectural decorations according to another embodiment.

The following are specific examples.

Unless otherwise indicated, the following examples and comparative examples used the following starting materials:

the protective rubber powder is LAPONITE S482 produced by BYK, the bactericide is ACTICIDE RS produced by Thor, the cellulose is NATROSOL 250HBR produced by Ashland, the first dispersant is SN-5040 produced by Nopuke, the defoamer is NXZ produced by Nopuke, the titanium dioxide is R-706 produced by DuPont, the calcined kaolin is DB-80 produced by Shanxi Jinyang, the hollow glass microsphere is IM16K produced by 3M, the first emulsion is RS-2798 produced by Bandafu, the aqueous color paste is color paste produced by Klaine, the second dispersant and the third dispersant are dispersants 191 produced by BYK, the base material wetting agent is a 346 wetting agent produced by BYK, the silane coupling agent is A-187 produced by Miyau, the matting powder is TS-100 produced by Yichuang, the talcum powder is MS-1250 produced by Guangfu Banana, the second emulsion is RS-3799S produced by Badafu, the third emulsion is RS-3799A produced by Badafu, the coalescing agent was the alcohol ester twelve (C-12).

Example 1:

the raw materials of the self-thickening multicolor paint of the embodiment are prepared from the following components:

granulating liquid: 93 parts of deionized water, 7 parts of protective adhesive and 0.1 part of bactericide.

Base paint: 46.6 parts of deionized water, 1 part of cellulose, 0.3 part of first dispersing agent, AMP-950.1 parts, 0.1 part of defoaming agent, 0.1 part of bactericide, 1 part of titanium dioxide, 7 parts of calcined kaolin, 1 part of hollow glass bead, 35 parts of first emulsion, 1.5 parts of film-forming assistant, 1 part of antifreezing agent, 0.28 part of protective adhesive and 1 part of water-based color paste.

Self-thickening continuous phase: 26.05 parts of deionized water, 3 parts of film-forming additive, 2 parts of antifreeze, 3.5 parts of second dispersant, 0.2 part of base material wetting agent, 0.7 part of silane coupling agent, 3.5 parts of matting powder, 0.8 part of talcum powder, 60 parts of second emulsion, 0.15 part of defoaming agent and 0.1 part of bactericide.

Inactive continuous phase: 26.05 parts of deionized water, 3 parts of a film-forming additive, 2 parts of an antifreezing agent, 3.5 parts of a second dispersing agent, 0.2 part of a base material wetting agent, 0.7 part of a silane coupling agent, 3.5 parts of a matting agent, 0.8 part of talcum powder, 60 parts of a third emulsion, 0.15 part of a defoaming agent and 0.1 part of a bactericide.

The self-thickening multicolor paint of the embodiment comprises the following raw materials in parts by mass:

20 parts of granulating liquid,

40 parts of base paint,

20 parts of self-thickening continuous phase, and

20 parts of inactive continuous phase.

(1) preparing a granulating liquid: adding deionized water into a dispersion cylinder, adding protective glue and a bactericide at the rotating speed of 100-300 rpm, increasing the rotating speed to 1200-1500rmp, and dispersing for 20-30 min.

(2) Preparation of base paint: adding deionized water into a dispersion cylinder, adding a first dispersing agent and cellulose at the rotating speed of 500-700rpm, adding AMP-95, a defoaming agent and a bactericide after dispersing for 10-15min, increasing the rotating speed to 1000-1500rpm after dispersing for 10min, adding titanium dioxide, calcined kaolin and hollow glass beads, adding a first emulsion, a defoaming agent, an antifreezing agent and a film forming aid after dispersing for 10-20min, slowly adding a protective adhesive after dispersing for 3-5min, maintaining the rotating speed of 1000-1500rpm for dispersing for 20-30min, and adding a water-based color paste.

(3) Preparation of self-thickening continuous phase: adding deionized water into a dispersion cylinder, adding a film-forming aid, an antifreezing agent, a second dispersing agent, a base material wetting agent and a silane coupling agent at the rotating speed of 1000rpm of 500-.

(4) Preparation of inactive continuous phase: adding deionized water into a dispersion cylinder, adding a film-forming aid, an antifreezing agent, a third dispersing agent, a base material wetting agent and a silane coupling agent at the rotating speed of 1000rpm of 500-.

(5) Self-thickening multicolor paint: and (3) adding the base paint prepared in the step (2) into the granulating liquid prepared in the step (1), shearing and granulating for 20-120s at the rotating speed of 500rpm at 300-.

Example 2:

the self-thickening multicolor paint of the embodiment is prepared from the following raw materials:

granulating liquid: 94 parts of deionized water, 6 parts of protective glue and 0.1 part of bactericide.

Base paint: 40.22 parts of deionized water, 1.1 parts of cellulose, 0.35 part of first dispersing agent, AMP-950.1 parts, 0.2 part of defoaming agent, 0.08 part of bactericide, 1 part of titanium dioxide, 7.2 parts of calcined kaolin, 0.8 part of hollow glass microsphere, 40 parts of first emulsion, 2 parts of film-forming assistant, 1 part of antifreezing agent, 0.29 part of protective adhesive and 1 part of water-based color paste.

Self-thickening continuous phase: 16.5 parts of deionized water, 3.5 parts of a film-forming additive, 2 parts of an antifreezing agent, 3 parts of a second dispersing agent, 0.15 part of a base material wetting agent, 0.5 part of a silane coupling agent, 3 parts of matting powder, 1 part of talcum powder, 60 parts of a second emulsion, 0.2 part of a defoaming agent and 0.15 part of a bactericide.

Inactive continuous phase: 16.5 parts of deionized water, 3.5 parts of a film-forming additive, 2 parts of an antifreezing agent, 3 parts of a third dispersing agent, 0.15 part of a base material wetting agent, 0.5 part of a silane coupling agent, 3 parts of matting powder, 1 part of talcum powder, 60 parts of a third emulsion, 0.2 part of a defoaming agent and 0.15 part of a bactericide.

18 parts of granulating liquid,

42 parts of base paint,

22 parts of self-thickening continuous phase, and

and 18 parts of an inactive continuous phase.

(2) Preparation of base paint: adding deionized water into a dispersion cylinder, adding a first dispersing agent and cellulose at the rotating speed of 700rpm of 500-.

(4) Preparation of inactive continuous phase: adding deionized water into a dispersion cylinder, adding a film-forming aid, an antifreeze, a third dispersant, a base material wetting agent and a silane coupling agent at the rotation speed of 1000rpm under 500-plus-one, increasing the rotation speed to 2000rpm, matting powder and talcum powder, dispersing for 30-60min, then reducing the rotation speed to 1500-plus-one, adding a third emulsion, an antifoaming agent and a bactericide, and dispersing for 20-30 min.

Example 3:

granulating liquid: 95 parts of deionized water, 5 parts of protective glue and 0.1 part of bactericide.

Base paint: 38.95 parts of deionized water, 0.9 part of cellulose, 0.4 part of first dispersing agent, AMP-950.1 parts, 0.15 part of defoaming agent, 0.1 part of bactericide, 0.8 part of titanium pigment, 7.5 parts of calcined kaolin, 1.2 parts of hollow glass beads, 40 parts of first emulsion, 2 parts of film-forming assistant, 1.2 parts of antifreezing agent, 0.27 part of protective adhesive and 1 part of water-based color paste.

Self-thickening continuous phase: 20.95 parts of deionized water, 3.1 parts of a film-forming assistant, 1.8 parts of an antifreezing agent, 3.4 parts of a second dispersing agent, 0.15 part of a base material wetting agent, 0.8 part of a silane coupling agent, 3.5 parts of a flatting powder, 0.9 part of talcum powder, 65 parts of a second emulsion, 0.2 part of a defoaming agent and 0.1 part of a bactericide.

Inactive continuous phase: 20.95 parts of deionized water, 3.1 parts of a film-forming assistant, 1.8 parts of an antifreezing agent, 3.4 parts of a third dispersant, 0.15 part of a base material wetting agent, 0.8 part of a silane coupling agent, 3.5 parts of a flatting powder, 0.9 part of talcum powder, 65 parts of a third emulsion, 0.2 part of a defoaming agent and 0.1 part of a bactericide.

22 parts of granulating liquid,

45 parts of base paint,

18 parts of self-thickening continuous phase, and

15 parts of inactive continuous phase.

The preparation method of the self-thickening multicolor paint of the embodiment comprises the following steps:

Example 4:

the composition of the granulating fluid, the base paint, the self-thickening continuous phase and the inactive continuous phase of the self-thickening multicolor paint of the embodiment is the same as that of the embodiment 1, and the self-thickening multicolor paint comprises the following raw materials in parts by weight:

15 parts of granulating liquid,

45 parts of base paint,

10 parts of self-thickening continuous phase, and

30 parts of inactive continuous phase.

The preparation of the self-thickening multicolor paint of this example was identical to the preparation of example 1.

Example 5:

the composition of the granulating fluid, the base paint, the self-thickening continuous phase and the inactive continuous phase of the self-thickening multicolor paint of the embodiment is the same as that of the embodiment 2, and the self-thickening multicolor paint comprises the following raw materials in parts by weight:

20 parts of granulating liquid,

50 portions of base paint,

15 parts of self-thickening continuous phase, and

15 parts of inactive continuous phase.

The preparation of the self-thickening multicolor paint of this example was identical to the preparation of example 2.

Example 6:

the composition of the granulating liquid, the base paint, the self-thickening continuous phase and the inactive continuous phase of the self-thickening multicolor paint of the embodiment is the same as that of the embodiment 3, and the self-thickening multicolor paint comprises the following raw materials in parts by weight:

25 parts of granulating liquid,

30 portions of base paint,

15 parts of self-thickening continuous phase, and

30 parts of inactive continuous phase.

The method of making the self-thickening multicolor paint of this example was identical to the method of making example 3.

Example 7:

30 parts of granulating liquid,

20 parts of base paint,

35 parts of self-thickening continuous phase, and

15 parts of inactive continuous phase.

The preparation of the self-thickening multicolor paint of this example was identical to the preparation of example 3.

Example 8:

the self-thickening multicolor paint of this example is essentially the same as example 3, except that the base paint does not contain hollow glass microspheres.

Comparative example 1:

20 parts of granulating liquid,

40 parts of base paint, and

40 parts of self-thickening continuous phase.

Comparative example 2:

20 parts of granulating liquid,

40 parts of base paint, and

40 parts of inactive continuous phase.

Comparative example 3:

the compositions of the granulation liquid, the base paint and the self-thickening continuous phase of the self-thickening multicolor paint of the embodiment are the same as those of the embodiment 1, and the inactive continuous phase further contains 1 part of alkali swelling thickener. The self-thickening multicolor paint comprises the following raw materials in parts by weight:

20 parts of granulating liquid,

40 parts of base paint, and

40 parts of inactive continuous phase.

According to the standard requirements of HG/T4343-. The viscosity of the coating is tested according to the standard regulation of GB 9269-88 Stomer viscometer method for measuring viscosity of building coatings. The results of the relevant tests are reported in tables 1 and 2.

TABLE 1

TABLE 2

As is clear from the results of examples 1 to 6 in Table 1, the self-thickening multicolor paint prepared by the present invention has excellent heat storage stability, stable viscosity before and after heat storage, no delamination in the can, no bleeding, and no difference before and after heat storage of the color dots; the water resistance is good, and the water whitening and foaming problems do not occur after 168 hours of soaking. Meanwhile, the paint has excellent alkali resistance, acid rain resistance, scouring resistance, stain resistance and artificial climate aging resistance. The self-thickening multicolor paint of example 7 had a reduced amount of base paint and an increased amount of self-thickening continuous phase compared to the self-thickening multicolor paints of examples 1-6, and the paint had slightly inferior heat storage compared to examples 1-6, with slight delamination. The self-thickening multicolor paint of example 8 was not added with hollow glass beads, and the heat storage property of the paint was slightly inferior to that of the paint of examples 1 to 6, and delamination occurred.

As can be seen from comparative example 1, when only the self-thickening continuous phase was used and the non-reactive continuous phase was not added, the stability of the coating was poor, the coating thickened seriously after heat storage, the viscosity increased significantly, and it was not convenient for practical use. And the color dots also shrink, the fluidity in the tank is poor, and the color dots are difficult to stir and mix evenly. As can be seen from comparative example 2, when only the inactive continuous phase was used, the coating material could not be self-thickened, and the viscosity was too low, resulting in poor storage property of the coating material and easy occurrence of delamination and precipitation. It can be seen from the comparison example 3 that the viscosity of the paint is increased to 65.7KU after 1 part of the alkali swelling thickener is added, but the viscosity after heat storage has a relatively obvious post-thickening phenomenon, the color point also has slight breakage and shrinkage, and the water resistance of the paint adopting the alkali swelling thickener is obviously poor, and the paint has obvious whitening phenomenon after 96 hours of water soaking and poor water resistance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, so as to understand the technical solutions of the present invention specifically and in detail, but not to be understood as the limitation of the protection scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. It should be understood that the technical solutions provided by the present invention, which are obtained by logical analysis, reasoning or limited experiments, are within the scope of the present invention as set forth in the appended claims. Therefore, the protection scope of the patent of the invention is subject to the content of the appended claims, and the description can be used for explaining the content of the claims.

Claims

1. The self-thickening multicolor paint is characterized in that the preparation raw materials comprise: base paint, granulation liquid, self-thickening continuous phase and inactive continuous phase;

mixing said color point with said self-thickening continuous phase for thickening;

2. The self-thickening multicolor paint as claimed in claim 1, wherein the base paint is present in an amount of 30 to 50 parts by mass; the granulation liquid is 15 to 25 parts by weight; the self-thickening continuous phase accounts for 10-30 parts by mass; the mass portion of the inactive continuous phase is 10-30.

3. The self-thickening multicolor paint of claim 1, wherein the first emulsion is a pure acrylic emulsion; the second emulsion and the third emulsion are each independently a silicone-acrylic emulsion.

4. The self-thickening multicolor paint of claim 1, wherein the matting powder is a silica prepared by a vapor phase process.

5. The self-thickening multicolor paint of claim 1, wherein the base paint further comprises at least one of a first dispersant, a bactericide, a defoamer, a film-forming aid, hollow glass microspheres, and an antifreeze;

the granulating liquid also comprises a bactericide;

6. The self-thickening multicolor paint as claimed in claim 5, wherein the base paint contains 0.2 to 0.5 parts by mass of the first dispersant;

and/or the mass portion of the bactericide is 0.05 to 0.2;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the film-forming additive is 1-3;

and/or the hollow glass bead is 0.5-1.2 parts by mass;

and/or 0.5-2 parts of antifreezing agent.

7. The self-thickening multicolor paint according to claim 5, wherein the mass portion of the second dispersant in the self-thickening continuous phase is 1-4;

and/or the base material wetting agent is 0.05 to 0.2 part by mass;

and/or the mass portion of the film-forming additive is 2-4;

and/or the mass portion of the antifreezing agent is 1-2.5;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the bactericide is 0.05 to 0.2.

8. The self-thickening multicolor paint as claimed in claim 5, wherein the mass portion of the third dispersant in the inactive continuous phase is 1 to 4;

and/or the base material wetting agent is 0.05 to 0.2 part by mass;

and/or the mass portion of the film-forming additive is 2 to 4;

and/or the mass part of the antifreezing agent is 1-2.5;

and/or the mass part of the defoaming agent is 0.05 to 0.2;

and/or the mass portion of the bactericide is 0.05 to 0.2.

9. The self-thickening multicolor paint of any one of claims 5 to 8, wherein the lithium magnesium silicate-based protective gum is selected from at least one of GTS, LAPONITE RD and LAPONITE S482;

and/or, the cellulose is selected from at least one of Natrosol HE 3KB, Natrosol 250HBR and EBS 481 FQ;

and/or the silane coupling agent is selected from at least one of modified methoxy silane and ethoxy silane;

and/or the first dispersant is at least one selected from polyacrylic acid sodium salt dispersant and polyacrylic acid ammonium salt dispersant;

and/or the second dispersant is selected from organic dispersants containing pigment affinity groups;

and/or the defoaming agent is selected from at least one of a mineral oil defoaming agent and an organic silicon defoaming agent;

and/or the bactericide is a kasong bactericide.

10. Use of the self-thickening multicolor paint of any one of claims 1 to 9 for the preparation of architectural decorations.