CN103421394B - Functional type water fever radiation multicolor finish preparation method and application - Google Patents

Abstract

The invention discloses a water-based colorful paint with heat radiation function, which comprises two components: 10-40 parts of dispersed phase and 60-90 parts of continuous phase. The invention applies the heat radiation performance to the water-based colorful paint, which can integrate the decoration performance, heat radiation and cooling performance. The paint can be scraped, brushed, and sprayed with a special spray gun, and can be applied to the inner surface of industrial heat preservation and the outer surface of buildings. .

Description

Preparation method and application of functional water-based heat radiation colorful coating

technical field

The invention relates to the field of functional architectural coatings, and relates to a preparation method and application of a decorative functional coating integrating water-based, colorful and heat radiation functions.

Background technique

Water-based colorful paint can form natural marble patterns and color decorative patterns after construction. Compared with ordinary paints, it has excellent painting characteristics and integrates decorative performance and functionality. Compared with natural stone, it has the characteristics of light weight, safer and more environmentally friendly, creative and adaptable.

The basic principle of heat radiation: heat transfer is carried out in three ways: conduction, convection and radiation. Thermal radiation is optically characterized as absorptivity, emissivity, and reflectivity. Among them, the emissivity is divided into hemispherical emissivity and normal emissivity. In order to obtain good radiant heat performance, the hemispherical emissivity of the paint film needs to be high to radiate heat most efficiently, so as to achieve the effect of radiation cooling.

Reflective heat insulation coatings can dissipate the energy of solar radiation to buildings through reflection and radiation heat transfer, which can reduce the cost of air conditioning and cooling, and are widely used in hot summer and warm winter regions. Patent CN101818013A discloses a reflective heat-insulating coating, which contains 35-40 parts of hollow microspheres and 10-12 parts of far-infrared ceramic powder; 200 parts, the thermal insulation filler is one or more combinations of hollow glass microspheres, hollow ceramic microspheres, zinc oxide, mica, and nano-tin oxide indium, but currently only white reflective thermal insulation coatings are widely used. With the increasingly urgent requirement of building energy saving, white thermal insulation coatings can no longer meet the market demand. Patent CN101712832A discloses a multi-color thermal insulation coating and its preparation method, but the color of the coating comes from the colored hollow ceramic microspheres therein, which is not a real water-based multi-color coating.

The technologies of water-based colorful coatings and reflective heat-insulating coatings are mature, and have been applied in a wide range and achieved good effects. CN102643587A discloses a coating that integrates the two effects.

But the coating that heat radiation is integrated with multicolored, has not been seen yet.

Contents of the invention

The technical problem to be solved by the present invention is to provide a preparation method and application of a water-based heat radiation multi-color coating which can integrate decoration performance and heat insulation performance.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is to provide a functional water-based heat radiation multi-color paint, comprising the following components in weight ratio: 60-90 parts of continuous phase, 10-40 parts of dispersed phase;

The weight ratio of components in the continuous phase is: 40-50 parts of EVA emulsion, 20-40 parts of water, 0.2-0.5 parts of antifungal agent, 0.2-0.5 parts of hydroxyethyl cellulose, 2-5 parts of metal ions Solution, 10-20 parts of functional filler, 2-5 parts of film-forming aid. The weight ratio of components in the dispersed phase is: 40-50 parts of EVA emulsion, 20-40 parts of water, 2-5 parts of carboxymethyl cellulose, 0.2-0.5 parts of wetting and dispersing agent, 0.2-0.5 parts of defoamer , 3-20 functional fillers.

Among them, the functional filler is one or more of silicon carbide, infrared powder, graphene, carbon fiber tube, iron oxide, titanium oxide, and zirconium oxide;

In order to solve the above-mentioned technical problems, another technical solution adopted by the present invention is to provide a preparation method of a water-based thermal radiation multi-color coating, including continuous phase preparation, dispersed phase preparation and water-based thermal radiation multi-color coating finished product preparation;

The preparation method of the continuous phase is as follows: add 20-40 parts of water and 0.2-0.5 parts of hydroxyethyl cellulose to the dispersion tank in sequence, stir at a speed of 300-500 rpm, then increase the speed to 1000-1200 rpm, and add 10-20 parts of Functional filler, disperse and stir for 15-20 minutes; then adjust the speed to 600-800rpm, add 2-5 parts of film-forming aids, stir for 5 minutes and slowly add 40-50 parts of EVA emulsion, 2-5 parts of metal ion solution, 0.2- 0.5 part of antifungal agent, stir evenly;

The preparation method of the dispersed phase is as follows: add 20-40 parts of water, 0.2-0.5 parts of wetting and dispersing agent, and 0.2-0.5 parts of defoamer in the dispersion tank in sequence, stir at 300-500 rpm, and add 3-20 parts of After the functional filler, increase the rotation speed to 1000-1200rpm, disperse and stir for 15-20min; then adjust the rotation speed to 600-800rpm, add 2-5 parts of carboxymethyl cellulose, stir for 5 minutes, slowly add 40-50 parts of EVA emulsion, stir Uniform;

The preparation method of the finished water-based heat radiation colorful paint is as follows: add 60-90 parts of the continuous phase to the dispersion tank, stir at a low speed, slowly add 10-40 parts of the dispersed phase during the stirring process, adjust the speed to 300-500rpm, and disperse to reach the product Required requirements.

The wetting and dispersing agent used in the present invention is polyacrylic acid copolymer potassium salt, modified polycarboxylate sodium salt dispersant, preferably BR3, Coatex 123K, or one or both of them are used together.

The defoamer is a polyether modified polydimethylsiloxane defoamer and nonionic surfactant, which can be one or more of BYK-024, BYK-028, 7010, and 7015.

The film-forming aid is one or more of Texanol, Coasol, DBE-IB, PPh, and alcohol ester 12.

The fungicide is a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.

The metal ion solution is a thickener aqueous solution of 10-15wt% aluminum sulfate or 10-15wt% ferric chloride, the thickener accounts for 2% of the total mass of the metal ion solution, and the thickener is a hydrophobic modified alkali-soluble emulsion Type thickener.

The effect of the present invention is to apply the thermal radiation performance to the water-based colorful paint, which can integrate high-grade decorative performance and radiant heat performance. The water-based colorful paint can be scraped, brushed, and sprayed with a special spray gun, which can not only achieve the decoration of natural stone Effect, and has the function of radiant heat, so that the product has excellent decorative properties and functions of heat insulation and heat radiation.

Detailed ways

In order to describe in detail the technical content, structural features, achieved objectives and effects of the present invention, the following will be described in detail in conjunction with the embodiments.

Example 1

Continuous phase (white): Add 35 parts of water and 0.5 parts of hydroxyethyl cellulose in sequence in the dispersion tank, adjust the speed to 350rpm, then increase the speed to 1000rpm, add 15 parts of infrared powder, disperse and stir for 15min, then reduce the speed Adjust to 600rpm, add 2 parts of Texanol, stir for 5 minutes, slowly add 45 parts of EVA emulsion, 2 parts of metal ion solution, 0.5 parts of antifungal agent, stir evenly and disperse for 10 minutes, then seal and store;

Dispersed phase (white): Add 27 parts of water, 0.5 parts of BR3 wetting and dispersing agent, 0.5 part of 7010 defoamer to the dispersion tank in turn, stir at 300rpm, add 20 parts of infrared powder; increase the speed to 1200rpm, disperse Stir for 15 minutes; adjust the speed to 800rpm, add 2 parts of carboxymethyl cellulose, stir for 5 minutes, then slowly add 50 parts of EVA emulsion, stir well and set aside;

Dispersed phase (black): Add 39 parts of water, 0.5 parts of BR3 wetting and dispersing agent, 0.5 parts of 7010 defoamer to the dispersion tank in turn, and stir at 600rpm; add 5 parts of graphene, increase the speed to 1500rpm, disperse and stir 15min; adjust the speed to 800rpm, add 5 parts of carboxymethyl cellulose, stir for 5 minutes, then slowly add 50 parts of EVA emulsion, stir well and set aside;

Dispersed phase (gray): Add 32 parts of water, 0.5 parts of BR3 wetting and dispersing agent, 0.5 parts of 7010 defoamer to the dispersion tank in turn, stir at 600rpm; adjust the speed to 700rpm, add 10 parts of silicon carbide and 5 parts For graphene, increase the speed to 1500rpm, disperse and stir for 20 minutes; add 2 parts of carboxymethyl cellulose, stir for 5 minutes, then slowly add 50 parts of EVA emulsion, stir well and set aside;

Finished product: add 60 parts of continuous phase to the dispersion tank, stir at low speed, slowly add 10 parts of dispersed phase (white), 10 parts of dispersed phase (black), and 20 parts of dispersed phase (gray) during the stirring process, until the particle diameter reaches the requirement after that.

Example 2

The dispersed phase (white) and the dispersed phase (black) are prepared by the method of Example 1, and the dispersed phase (red) only needs to replace silicon carbide and graphene with iron oxide and zirconia; the continuous phase (white) also adopts Example 1 prepared by the method;

Finished product: add 70 parts of continuous phase to the dispersion tank, stir at low speed, slowly add 10 parts of dispersed phase (white), 10 parts of dispersed phase (black), and 10 parts of dispersed phase (red) until the particle diameter reaches the requirement That's it.

Example 3

Dispersed phase (white), dispersed phase (black) and dispersed phase (gray) are prepared by the method of Example 1, the continuous phase (white) only needs to replace the infrared powder with silicon carbide, and the carbon fiber tube filler adopts the method of Example 1 preparation;

Finished product: add 80 parts of continuous phase to the dispersion tank, stir at low speed, slowly add 5 parts of dispersed phase (white), 10 parts of dispersed phase (black), and 5 parts of dispersed phase (gray) until the particle diameter reaches the requirement That's it. The general performance test of the coating in the above examples, the emissivity is tested according to GJB2502.3-2006, and the specific results are shown in Table 1:

It can be seen from the above table that the water-based heat-radiating multi-color paint of the present invention has high water resistance, high humidity and heat resistance, beautiful surface decoration effect and good heat radiation effect. Add appropriate amount of water to adjust the viscosity of the water-based heat radiation colorful paint before use, and spray it on the substrate through a special spray gun, which can not only achieve the decorative effect of natural stone, but also have the function of heat radiation.

The above-mentioned embodiments and their improvements can be flexibly adjusted according to needs. The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the content of the description of the present invention, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.

Claims (7)

1. A functional water-based heat radiation colorful coating, characterized in that it comprises the following components in parts by weight: 60-90 parts of continuous phase, 10-40 parts of dispersed phase; The component weight ratio in the continuous phase is: 40-50 parts of EVA emulsion, 20-40 parts of water, 0.2-0.5 part antifungal agent, 0.2-0.5 parts of hydroxyethyl cellulose, 2-5 parts of metal ion solution, 10-20 functional fillers, 2-5 parts of film-forming aids; The component weight ratio in the dispersed phase is: 40-50 parts of EVA emulsion, 20-40 parts of water, 2-5 parts carboxymethyl cellulose, 0.2-0.5 parts of wetting and dispersing agent, 0.2-0.5 parts of defoamer, 3-20 functional fillers; The functional filler is one or more of silicon carbide, infrared powder, graphene, carbon fiber tube, iron oxide, titanium oxide, and zirconium oxide. 2. The functional water-based thermal radiation colorful paint according to claim 1, wherein the metal ion solution is an aqueous thickener solution containing 10-15wt% aluminum sulfate or 10-15wt% ferric chloride, The thickener accounts for 2% of the total weight of the metal ion solution, and the thickener is a hydrophobically modified alkali-soluble emulsion type thickener. 3. The functional water-based heat radiation colorful paint according to claim 1, wherein the wetting and dispersing agent is polyacrylic acid copolymer potassium salt and modified polycarboxylate sodium salt dispersant. 4. The functional water-based thermal radiation colorful paint according to claim 1, wherein the defoamer is a polyether-modified polydimethylsiloxane or a nonionic surfactant. 5. The functional water-based thermal radiation colorful coating according to claim 1, wherein the fungicide is 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl - Mixtures of 4-isothiazolin-3-ones. 6. The functional water-based heat radiation colorful paint according to claim 1, wherein the film-forming aid is one or more of Texanol, Coasol, DBE-IB, and PPh. 7. A method for preparing a functional water-based heat-radiating multi-color coating, comprising continuous phase preparation, dispersed phase preparation and functional water-based heat-radiating multi-color coating finished product preparation; The preparation method of the continuous phase is as follows: add 20-40 parts of water and 0.2-0.5 parts of hydroxyethyl cellulose to the dispersion tank in sequence and stir at a speed of 300-500 rpm, then increase the speed to 1000-1200 rpm, and add 10-20 parts of Functional filler, disperse and stir for 15-20 minutes; then adjust the speed to 600-800rpm, add 2-5 parts of film-forming aids, stir for 5 minutes and slowly add 40-50 parts of EVA emulsion, 2-5 parts of metal ion solution, 0.2- 0.5 part of antifungal agent, stir evenly; The preparation method of the dispersed phase is as follows: add 20-40 parts of water, 0.2-0.5 parts of wetting and dispersing agent, and 0.2-0.5 parts of defoamer in the dispersion tank in sequence, stir at 300-500 rpm, and add 3-20 parts of After the functional filler, increase the rotation speed to 1000-1200rpm, disperse and stir for 15-20min; then adjust the rotation speed to 600-800rpm, add 2-5 parts of carboxymethyl cellulose, stir for 5 minutes, slowly add 40-50 parts of EVA emulsion, stir Uniform; The preparation method of the finished functional water-based heat radiation colorful paint is as follows: add 60-90 parts of the continuous phase to the dispersion tank, stir at a low speed, slowly add 10-40 parts of the dispersed phase during the stirring process, adjust the speed to 300-500rpm, and disperse Until the particle diameter meets the required requirements of the product; The functional filler is one or more of silicon carbide, infrared powder, graphene, carbon fiber tube, iron oxide, titanium oxide, and zirconium oxide.