WO2019037427A1

WO2019037427A1 - Elastic anti-cracking imitation granite heat reflective coating and preparation method therefor

Info

Publication number: WO2019037427A1
Application number: PCT/CN2018/081361
Authority: WO
Inventors: 王伟东; 郑树军; 朱从华
Original assignee: 浙江华德新材料有限公司
Priority date: 2017-08-23
Filing date: 2018-03-30
Publication date: 2019-02-28
Also published as: CN107474672A

Abstract

An elastic anti-cracking imitation granite heat reflective coating, comprising (parts by weight): (1) material A: 30-40 of a water-dilutable resin, 10-20 of deionized water, 2-4 of a dispersant, 1 of a bactericide, 5-10 of a pigment, 5-15 of kaolin, 3-5 of a composite thickener, 30-40 of quartz sand, and 10-15 of a heat-insulating powder; (2) material B: 94-98 of deionized water, and 2-6 of a protective adhesive; and (3) material C: 85-90 of a water-dilutable resin, 8-12 of a heat-insulating powder, and 3-5 of a composite thickener. A method for preparing the coating is executed according to the following steps: 1) uniformly mixing the deionized water, the pigment, the kaolin, and the composite thickener of material A and then adding the quartz sand to the mixture, and conducting color correction according to requirements; 2) uniformly dispersing material B; 3) uniformly mixing material A and material B obtained in the above steps 1) and 2) at a ratio of 1:1 and preparing the mixture into a pellet shape; 4) uniformly mixing and stirring material C; and 5) shearing and mixing the materials prepared in step 3) and step 4) to give the product.

Description

Elastic anti-cracking imitation granite heat reflective coating and preparation method thereof

Technical field

The invention relates to an exterior wall coating and a method of making the coating.

Background technique

Granite is a favorite decorative plate; especially the high-temperature processed granite (called fire board), due to the uneven expansion of the surface due to heat, and the appearance of some bumps similar to the texture and visual effects of the litchi surface, with decorative and anti-slip effects, subject to Many consumers prefer, but the price is more expensive and it is easy to get hot and cause cracking under the sun radiation, especially in summer, the indoor temperature is too high and affects comfort. To this end, some people have tried to study imitation products, and traditional water-sand sand coatings can produce visual effects similar to fire-burning boards; however, because traditional water-sand sand coatings contain heat-absorbing pigments such as carbon black and iron black, they do not have reflective heat insulation effects. .

technical problem

The object of the present invention is to overcome the deficiencies in the above background art and to provide a functional type imitation granite coating and a manufacturing method thereof, which provide not only an elastic anti-cracking effect, but also an uneven effect and heat similar to that of a fire board. Reflective insulation effect, the production method provided should have the characteristics of simple process and low cost.

Technical solution

An elastic anti-cracking granite heat reflective coating comprising the components and parts by weight:

1) A material:

Waterborne resin 30-40, deionized water 10-20, dispersant 2-4, fungicide 1, pigment 5-10, kaolin 5-15, composite thickener 3-5, quartz sand 30-40, heat insulation powder 10-15;

2) B material:

Deionized water 94-98, protective glue 2-6;

3) C material:

Water-based resin 85-90, heat-insulating powder 8-12, composite thickener 3-5;

The dispersing agent is an environmentally friendly sodium polycarboxylate brine treatment dispersing agent, the bactericide is an LXE bactericidal preservative, and the composite thickener is mixed by hydroxyethyl cellulose and special glue in a weight ratio of 1:1. The special glue is one of hydroxypropyl guar, gelatin, sodium alginate and carrageenan;

The method for manufacturing the heat insulating powder is:

(a) mixing the porous mineral particles and the silane coupling agent, the dispersing agent, the deionized water and the absolute ethanol in a weight ratio of 9-11:1:1:3-5:3-5;

(b) mixing nano silica, phase separation preventing agent, water and absolute ethanol in a weight ratio of 4:1:3:2;

(c) mixing the liquid formed in steps (a) and (b) in a weight ratio of 97:3, then dripping with ammonia to pH = 9, and then aging at room temperature to obtain a gel;

(d) The obtained gel is dried and kept to obtain a composite powder of porous mineral particles coated with nano silica.

The porous mineral particles are one or a mixture of two or more of zeolite, diatomaceous earth and pumice; the fineness of the porous mineral particles is less than 120 mesh.

The protective rubber is prepared by mixing lithium bentonite and magnesium aluminum silicate in a weight ratio of 8:2;

The aqueous resin is a pure acrylic emulsion or a fluorocarbon resin emulsion or a silicone-acrylic resin emulsion or a fluorosilicone resin emulsion, and the prepared coating has a dynamic crack resistance of 0.5 mm or more.

The pigment is at least one of titanium white powder, iron red, titanium yellow, indigo, permanent violet, deep yellow, and red.

The titanium white powder is preferably rutile titanium dioxide R975.

The kaolin whiteness requirement is greater than 90, and the fineness is less than 1250 mesh; the whiteness requirement of the quartz sand is greater than 85, and the fineness is less than 120 mesh.

The method for preparing the above elastic crack-resistant granite heat reflective paint is carried out according to the following steps:

1) Mix the deionized water, dispersant, bactericide, kaolin, water-based resin, heat-insulating powder and composite thickener in the A material into the quartz sand, and then add the color according to the requirements; , titanium yellow, indigo, permanent solid purple, deep yellow, red;

2) Mixing the B material evenly;

3) mixing the A material and the B material obtained in the above steps 1) and 2) to form a pellet shape;

4) mixing and mixing the C material;

5) The step 3) is shear-mixed with the material obtained in the step 4) to form a water-in-sand coating having uniform distribution of particles of different colors.

The particle size in the step 3) is from 1 to 5 mm.

Beneficial effect

The invention has the beneficial effects that: after the spray-drying of the elastic anti-cracking imitation granite heat-reflecting paint, the micro-heap piles of different sizes, different heights and irregular distributions are presented, which fully embodies the natural rock (especially the fire board). The texture and color, with a strong three-dimensional simulation visual effect, solves the problem that the conventional water-in-water coating is not strong in stereoscopic effect and lacks texture. Moreover, the use of heat-insulating powder and compound black coloring, the solar reflectance of the paint is greatly improved, and an excellent heat insulating effect is obtained.

Embodiments of the invention

The idea of the invention is: selecting elastic anti-cracking water-based resin, removing heat-absorbing pigment filler such as carbon black, selecting kaolin and quartz sand with higher whiteness, adding a certain amount of heat-insulating powder to the paint, and using compound black (using Iron red, titanium yellow, indigo three-color compound) replace the endothermic carbon black, iron black pigment. The compound black can increase the solar reflectance of the pigment (the carbon black pigment absorbs more than 95% of the sunlight, and the iron red, titanium yellow and indigo blue for the black color have a solar absorption rate of less than 70%, The black paste after compounding has a solar light absorption rate of less than 70% and stable performance, and the solar light reflectance is greatly improved without affecting the natural rock texture effect; the present invention has been formed.

The invention is further illustrated by the following examples, but the invention is not limited to the following examples.

Example 1

1) A material:

Pure acrylic emulsion 30.0, deionized water 10.0, dispersant 2-4, bactericide 1, titanium dioxide 4.0, kaolin 10.0, hydroxyethyl cellulose and hydroxypropyl guar mixed in a 1:1 ratio Thickener 3.0, heat insulation powder 10, quartz sand 30.0;

2) B material:

Deionized water 94, lithium bentonite and magnesium aluminum silicate mixed in a ratio of 8:2 to form a protective rubber 6;

3) C material:

Pure acrylic emulsion 85, hydroxyethyl cellulose and hydroxypropyl guar mixed 1:1 ratio of composite thickener 5.0, heat insulation powder 10;

The method for preparing the elastic anti-cracking marble heat reflective paint is carried out according to the following steps:

1) Mix deionized water, titanium dioxide, kaolin, dispersant, bactericide, pure acrylic emulsion, heat insulation powder and composite thickener in material A, disperse at high speed, add quartz sand, and then color according to requirements ( The color-containing pigments include iron red, iron yellow, indigo, permanent solid purple, deep yellow, red, and black. When the A material is toned, the A material is divided into several parts according to the requirements, and the color is adjusted into different colors. ;

2) Mixing the B material evenly;

3) mixing the A and B materials prepared in the above steps 1) and 2), and then stirring to form a granular shape; the particle size is controlled to be 2-3 mm;

4) mixing and mixing the C material;

5) Mixing the material obtained in the step 3) with the material obtained in the step 4) to form a water-in-sand coating having uniform distribution of particles of different colors.

Example 2

An elastic anti-cracking marble heat reflective coating comprising the components and parts by weight:

1) A material:

Fluorocarbon emulsion 30.0, deionized water 10.0, titanium dioxide 3.0, kaolin 5.0, dispersant 2-4, fungicide 1, hydroxyethyl cellulose and gelatin mixed in a 1:1 ratio of compound thickener 4.0, quartz Sand 35, heat insulation powder 10;

2) B material:

Deionized water 96, lithium bentonite and magnesium silicate aluminum mixed in a ratio of 8:2 to form a protective rubber 4;

3) C material:

Fluorocarbon resin emulsion 86, hydroxyethyl cellulose and gelatin mixed in a 1:1 ratio of composite thickener 4.0, heat insulation powder 10;

1) Mix deionized water, titanium dioxide, kaolin, dispersant, bactericide, fluorocarbon emulsion, heat insulation powder and composite thickener in material A, disperse at high speed, add quartz sand, and then color according to requirements ( The color-containing pigments include iron red, iron yellow, indigo, permanent solid purple, deep yellow, red, and black. When the A material is toned, the A material is divided into several parts according to requirements, and the color is not used. ;

2) Mixing the B material evenly;

4) mixing and mixing the C material;

5) Mixing the material obtained in the step 3) with the material obtained in the step 4), that is, forming an elastic anti-cracking marble heat-reflecting paint having uniform distribution of particles of different colors.

Example 3

1) A material:

Silicone-acrylic resin emulsion 30.0, deionized water 10.0, titanium dioxide 8.0, dispersant 3.0, bactericide 1.0, kaolin 5.0, heat-insulating powder 10, hydroxyethyl cellulose and carrageenan mixed in a 1:1 ratio Thickener 3.0, quartz sand 30.0;

2) B material:

Deionized water 96.0, lithium bentonite and magnesium aluminum silicate mixed in a ratio of 8:2 to form a protective rubber 4;

3) C material:

Silicone-acrylic resin emulsion 85, hydroxyethyl cellulose and carrageenan in a 1:1 ratio of composite thickener 5.0, heat insulation powder 10;

1) Mix deionized water, titanium dioxide, kaolin, auxiliaries, silicone-acrylic resin emulsion, heat-insulating powder and composite thickener in material A, add high-speed dispersion, add quartz sand, and then color according to requirements. The use of pigments including iron red, titanium yellow, indigo, permanent solid purple, deep yellow, red, compound black: A material coloring according to requirements, the A material is divided into several parts, adjusted to use no color);

2) Mixing the B material evenly;

3) mixing the A and B materials prepared in the above steps 1), 2), and then stirring to form a granular shape; the particle size is controlled to be 4-4.5 mm;

4) mixing and mixing the C material;

The dispersing agent used in the above embodiment is an environmentally-friendly polycarboxylate sodium salt treatment dispersing agent, the sterilizing agent is a LXE bactericidal preservative; the heat insulating powder is a composite powder coated with porous mineral particles and nano-silica; the protective rubber is made of lithium. Base bentonite and magnesium aluminum silicate are mixed in a ratio of 8:2; titanium white powder is R975; kaolin is 1250 mesh and whiteness is greater than 90; quartz sand is quartz sand with whiteness greater than 85 and less than 120 mesh; For the use of iron red, titanium yellow, indigo three colors; pure acrylic emulsion is Bad Fu Industrial Co., Ltd. RS-2788; silicone acrylic emulsion is Bad Fu Industrial Co., Ltd. RS-3788, fluorocarbon emulsion for Shanghai Baoli Jia Chemical Co., Ltd. BLJ-998FA.

Unless otherwise indicated, the ratios described herein are by weight.

The performance test results of the products of the present invention are as follows:

The elastic anti-cracking marble heat-reflective coating prepared according to the invention has strong anti-cracking ability, good water resistance, good alkali resistance, excellent heat insulation performance (excellent reflection performance to sunlight), and meets HG/ The requirements of T4343-2012 meet the requirements of JG/T235-2014, which increases the effect of reflection and heat insulation and achieves the goal of energy saving and emission reduction.

The above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and all the technical solutions under the inventive concept belong to the protection scope of the present invention. It should be noted that those skilled in the art should be considered as the scope of protection of the present invention without departing from the principles of the invention.

Claims

An elastic anti-cracking marble heat reflective coating comprising the components and parts by weight:

1) A material:

Waterborne resin 30-40, deionized water 10-20, dispersant 2-4, fungicide 1, pigment 5-10, kaolin 5-150, composite thickener 3-5, quartz sand 30-40, heat insulation powder 10-15;

2) B material:

Deionized water 94-98, protective glue 2-6;

3) C material:

Water-based resin 85-90, heat-insulating powder 8-12, composite thickener 3-5;

The dispersing agent is an environmentally friendly sodium polycarboxylate brine treatment dispersing agent, the bactericide is an LXE bactericidal preservative, and the composite thickener is mixed by hydroxyethyl cellulose and special glue in a weight ratio of 1:1. The special glue is one of hydroxypropyl guar, gelatin, sodium alginate and carrageenan;

The method for manufacturing the heat insulating powder is:

(a) mixing the porous mineral particles and the silane coupling agent, the dispersing agent, the deionized water and the absolute ethanol in a weight ratio of 9-11:1:1:3-5:3-5;

(b) mixing nano silica, phase separation preventing agent, water and absolute ethanol in a weight ratio of 4:1:3:2;

(c) mixing the liquids formed in steps (a) and (b) in a weight ratio of 97:3, then dripping with ammonia to pH = 9, and then aging at room temperature to obtain a gel;

(d) The obtained gel is dried and kept to obtain a composite powder of porous mineral particles coated with nano silica.
The elastic crack-resistant marble heat reflective paint according to claim 1, wherein the porous mineral particles are one or a mixture of two or more of zeolite, diatomaceous earth and pumice; fineness of porous mineral particles Less than 120 mesh.
The elastic anti-cracking marble heat reflective coating according to claim 1, wherein the protective adhesive is formed by mixing lithium bentonite and magnesium aluminum silicate in a weight ratio of 8:2.
The elastic crack-resistant marble heat-reflective coating according to claim 1, wherein the aqueous resin is a pure acrylic emulsion or a fluorocarbon resin emulsion or a silicone-acrylic resin emulsion or a fluorosilicone resin emulsion, and the coating is dynamically resistant. The cracking performance is greater than or equal to 0.5 mm.
The elastic crack resistant marble heat reflective coating according to claim 1, wherein the pigment is titanium white powder.
The elastic crack-resistant marble heat reflective paint according to claim 1, wherein the kaolin has a whiteness requirement of more than 90 and a fineness of less than 1250 mesh.
The elastic crack-resistant marble heat reflective paint according to claim 1, wherein the quartz sand has a whiteness requirement of more than 85 and a fineness of less than 120 mesh.
The method for producing an elastic crack-resistant marble heat reflective paint according to claim 1, which is carried out according to the following steps:

1) Mix the deionized water, pigment, kaolin and composite thickener in the A material into the quartz sand, and then color the color according to the requirements. The coloring pigments include iron red, titanium yellow, indigo, and permanent purple. , deep yellow, red;

2) Disperse the B material evenly;

3) The A material and the B material obtained in the above steps 1) and 2) are uniformly mixed and mixed into a pellet shape according to 1:1;

4) mixing and mixing the C material;

5) The step 3) is shear-mixed with the material obtained in the step 4) to form an elastic anti-cracking marble heat-reflecting coating having uniform distribution of particles of different colors.
The method for producing an elastic crack-resistant marble heat reflective paint according to claim 8, wherein the particle size in the step 3) is 1-5 mm.