CN106147442A - Thermal insulation coatings and preparation method thereof and heat insulation coating - Google Patents

Abstract

The invention relates to a thermal insulation coating, a preparation method thereof and a thermal insulation coating. The thermal insulation coating includes the following components in parts by mass: 15-30 parts of main material, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein the main material It is a polymer resin with elastic elongation above 800% and glass transition temperature below -10°C. The thermal insulation effect of the above-mentioned thermal insulation coating is better.

Description

Thermal insulation coating, preparation method thereof and thermal insulation coating

technical field

The invention relates to the field of construction engineering, in particular to a thermal insulation coating, a preparation method thereof and the thermal insulation coating.

Background technique

Making buildings thermally insulated can not only save energy, but also improve the quality of living. According to statistics, the proportion of building energy consumption in the entire energy consumption is generally 30-40%, and most of them are energy consumption in heating and cooling. As an important part of building energy conservation, thermal insulation coatings have become an important part of the industry. The popular topic of research is paid attention to by countries all over the world. However, the thermal insulation effect of existing coatings is still relatively poor and cannot meet people's needs.

Contents of the invention

In view of this, it is necessary to provide a thermal insulation coating with better thermal insulation effect.

In addition, the invention also provides a preparation method of the thermal insulation coating and the thermal insulation coating.

A thermal insulation coating, comprising the following components in parts by mass: 15-30 parts of main ingredients, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein , the main material is a polymer resin with an elastic elongation above 800% and a glass transition temperature below -10°C.

In one of the embodiments, the main material is selected from one of water-based acrylic resin and water-based polyurethane resin.

In one embodiment, the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate.

In one embodiment, the particle size of the acrylic polymer hollow spheres is 20-50 microns.

In one embodiment, the thickener is methylcellulose or hydroxyethylcellulose.

In one of the embodiments, it further includes 0.1-10 parts by mass of pigment.

In one of the embodiments, it further includes 0.1-20 parts by mass of filler, and the filler is kaolin or calcium carbonate.

In one of the embodiments, 0.5-1 part by mass of a dispersant is further included.

A preparation method for thermal insulation coating, comprising the steps of:

The following components are weighed in parts by mass: 15-30 parts of main ingredients, 3-22 parts of acrylic acid polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein the main The material is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C; and

The water, main ingredients, acrylic acid polymer hollow spheres and thickener are mixed to obtain a slurry with a viscosity of 90-110ku.

A thermal insulation coating, the thermal insulation coating is prepared from the above thermal insulation coating, and the thickness of the thermal insulation coating is 1-1.5 mm.

The above-mentioned thermal insulation coating includes 15-30 parts by mass of main ingredients, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein the acrylic polymer hollow spheres The thermal insulation coating that can be prepared by using the above thermal insulation coating has a porous structure, thereby forming a steric hindrance in the thermal insulation coating, which will block heat conduction and reduce heat loss, thereby achieving thermal insulation of the thermal insulation coating ; while the main material is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C, which has good elasticity, which can ensure that the product will not crack under the condition of thick coating construction, and at the same time makes the thermal insulation coating have a strong Good waterproof effect.

Description of drawings

Fig. 1 is the preparation method flowchart of the thermal insulation coating of an embodiment;

2 is a scanning electron microscope image of the thermal insulation coating prepared from the thermal insulation coating of Example 1.

detailed description

In the following, the thermal insulation coating, its preparation method and thermal insulation coating will be further described in detail mainly in conjunction with the accompanying drawings and specific examples.

One embodiment is the thermal insulation coating, which is prepared from thermal insulation paint. The thermal insulation paint comprises the following components in parts by mass: 15-30 parts of main material, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener.

Among them, the main material is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C. The use of polymer resins with a low glass transition temperature can prevent cracking of the insulation coating caused by water vapor.

Specifically, the main material is selected from one of water-based acrylic resin and water-based polyurethane resin.

Wherein, the water-based acrylic resin is an acrylic resin emulsion, an acrylic resin aqueous dispersion (also known as water dilutable acrylic acid) or an acrylic resin aqueous solution. Wherein, the acrylic resin may be Primac HA-8 of BASF, Germany.

Among them, the water-based polyurethane resin is a very fine aliphatic polyurethane dispersion. Wherein, the water-based polyurethane resin can be German Bayer water-based polyurethane emulsion DISPERCOLL U54.

Wherein, the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate. For example, the acrylic polymer hollow spheres can be 551WE40d36 hollow powder of Ica Chemical Company. The particle size of the acrylic polymer hollow sphere is 20-50 microns.

Wherein, the thickener is methyl cellulose or hydroxyethyl cellulose.

Wherein, the thermal insulation coating also includes 0.1-10 parts by mass of pigments. The pigment is selected from one of titanium dioxide powder, permanent yellow, indoline, benzimidazole copper, permanent red, permanent pink, pyrrole red, phthalocyanine blue, phthalocyanine green, carbon black and permanent violet. Among them, the international pigment index number of permanent yellow can be PY-74 or PY-83; the international pigment index number of indoline can be PY-110; the international pigment index number of benzimidazole copper can be PY-151 or PY154 ; The International Pigment Index Number for Everlasting Red can be PR-112; the International Pigment Index Number for Everlasting Pink can be PR-146; the International Pigment Index Number for pyrrole red can be PR-254; Can be PB-15:1, PB-15:2, or PB-15:3; phthalocyanine green can have an International Pigment Index number PG-7; carbon black can have an International Pigment Index number PBk-7; permanent violet The International Pigment Index number can be PV-19.

Wherein, the thermal insulation coating also includes a filler with a mass fraction of 0.1-20 parts. Among them, the filler is kaolin or calcium carbonate.

Wherein, the thermal insulation coating also includes a preservative with a mass fraction of 0.1-0.7 parts. Preservatives protect insulation coatings from bacterial attack. Specifically, the preservative is isothiazolinone or benzisothiazolinone.

Wherein, the thermal insulation coating also includes 0.5-1 part by mass of a dispersant. Wherein, the dispersant can be sodium polyacrylate or sodium polycarboxylate.

Wherein, the thermal insulation coating also includes a defoamer with a mass fraction of 0.6-1.1 parts. Defoamers prevent foaming in insulation coatings. Wherein, the antifoaming agent is mineral oil, organosilicon or silicone. For example, the antifoaming agent can be Nopco 8034 from Henkel.

Wherein, the thermal insulation coating also includes 1.2-1.8 parts by mass of propylene glycol. Since the paint is generally stored in the container, propylene glycol can make the container for storing the paint have a better opening effect.

The above-mentioned thermal insulation paint can be used on the outer roof or walls of houses, and can be applied to the surfaces of concrete buildings, wood and metal.

Wherein, the thermal insulation coating can be prepared by rolling, brushing or spraying. The thickness of the thermal insulation coating is preferably 1-1.5 mm, so as to achieve sufficient thermal insulation effect.

The above-mentioned thermal insulation coating includes 15-30 parts by mass of main ingredients, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein the acrylic polymer hollow spheres The thermal insulation coating obtained by using the above thermal insulation coating can be made into a porous structure, thereby forming steric hindrance in the thermal insulation coating. The steric hindrance will block heat conduction, reduce heat loss, and realize thermal insulation of the thermal insulation coating.

At the same time, the main material in the thermal insulation coating is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C, which can make the thermal insulation coating have a good waterproof effect.

As shown in Figure 1, the preparation method of the thermal insulation coating of an embodiment is a kind of preparation method of above-mentioned thermal insulation coating, and the preparation method of this thermal insulation coating comprises the following steps:

Step S110: Weigh the following components in parts by mass: 15-30 parts of main ingredients, 3-22 parts of acrylic polymer hollow spheres, 15-40 parts of water and 0.5-1.5 parts of thickener.

Among them, the main material is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C.

Specifically, the main material is selected from one of water-based acrylic resin and water-based polyurethane resin. Wherein, the acrylic resin may be Primac HA-8 of BASF, Germany. , the water-based polyurethane resin can be German Bayer water-based polyurethane emulsion DISPERCOLL U54.

Wherein, the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate. For example, the acrylic polymer hollow spheres can be 551WE40d36 hollow powder of Ica Chemical Company. The particle size of the acrylic polymer hollow sphere is 20-50 microns.

Wherein, the thickener is methyl cellulose or hydroxyethyl cellulose.

Step S120: Mix water, main ingredients, acrylic polymer hollow spheres and a thickener to obtain a slurry with a viscosity of 90-110ku.

Specifically, in step S110, it also includes weighing 0.1-10 parts by mass of pigment, 0.1-20 parts of filler, 0.5-1.0 part of dispersant, 0.6-1.1 part of defoamer and 1.2-1.8 At this time, the steps of mixing water, main ingredients, acrylic polymer hollow spheres and thickener are as follows: add filler, dispersant, pigment, propylene glycol and defoamer to water, stir and mix to obtain a mixed liquid, and then add main ingredients, acrylic polymer hollow spheres and thickeners to the mixed liquid and stir to mix.

Wherein, the pigment is selected from one of titanium dioxide powder, permanent yellow, indoline, benzimidazole copper, permanent red, permanent pink, pyrrole red, phthalocyanine blue, phthalocyanine green, carbon black and permanent violet . Among them, the international pigment index number of permanent yellow can be PY-74 or PY-83; the international pigment index number of indoline can be PY-110; the international pigment index number of benzimidazole copper can be PY-151 or PY154 ; The International Pigment Index Number for Everlasting Red can be PR-112; the International Pigment Index Number for Everlasting Pink can be PR-146; the International Pigment Index Number for pyrrole red can be PR-254; Can be PB-15:1, PB-15:2, or PB-15:3; phthalocyanine green can have an International Pigment Index number PG-7; carbon black can have an International Pigment Index number PBk-7; permanent violet The International Pigment Index number can be PV-19.

Among them, the filler is kaolin or calcium carbonate.

Among them, the dispersant sodium polyacrylate or sodium polycarboxylate; for example, SN-5040 from Nopco Corporation of Japan.

Wherein, the antifoaming agent is mineral oil, organosilicon or silicone. For example, the antifoaming agent can be Nopco 8034 from Henkel.

Specifically, in step S110, it also includes weighing 0.1 to 0.7 parts of preservative by mass. At this time, the step of mixing water, main ingredients, acrylic polymer hollow spheres and thickener also adds preservative .

Wherein, the preservative is isothiazolinone or benzisothienone.

The preparation method of the thermal insulation coating is simple in operation and easy in industrialized production.

The following is the specific embodiment part:

Example 1

The preparation process of the thermal insulation coating of the present embodiment is as follows:

Weigh the following components in parts by mass: 25 parts of main material, 13 parts of acrylic polymer hollow spheres, 30 parts of water, 1 part of thickener, 5 parts of pigment, 15 parts of filler, 0.5 parts of dispersant, 1 part of defoamer, 1.5 parts of propylene glycol and 0.2 parts of preservative. Among them, the main material is water-based acrylic resin, with an elastic elongation of 800% and a glass transition temperature of -10°C; the acrylic polymer hollow spheres are copolymer hollow spheres of methyl methacrylate and butyl acrylate, with a particle size of 40 micron; the thickener is methyl cellulose; the preservative is isothiazolinone; the defoamer is mineral oil; the filler is kaolin; and the pigment is titanium dioxide powder.

Disperse and mix water, dispersant, propylene glycol, pigment and filler in a disperser at 1500 rpm, add defoamer during mixing; then reduce the speed of dispersant to 500 rpm, add main ingredients, acrylic acid polymerization Hollow spheres, preservatives and thickeners are used to obtain a slurry with a viscosity of 100ku, which is the thermal insulation coating.

The thermal insulation coating of this embodiment is painted on the surface of the building, and the coating thickness is 1.5 mm. After drying, a thermal insulation coating is formed. The thermal conductivity of the thermal insulation coating of this embodiment is tested by the EN12664 measurement method, wherein the thermal conductivity The conductivity directly reflects the thermal insulation effect of the thermal insulation coating. The thermal conductivity of the thermal insulation coating formed by the thermal insulation coating of this embodiment is shown in Table 1.

The waterproof effect of the thermal insulation coating of this embodiment was tested according to the national standard of waterproof coating GB/23415-2009, wherein, the waterproof performance of the thermal insulation coating of this embodiment is shown in Table 1.

Wherein, FIG. 2 is a scanning electron microscope image of the thermal insulation coating of this embodiment. It can be seen from FIG. 2 that the thermal insulation coating has a porous structure, so the thermal insulation coating of this embodiment has a better heat insulation effect.

Example 2

The preparation process of the thermal insulation coating of the present embodiment is as follows:

Weigh the following components in parts by mass: 15 parts of main material, 22 parts of acrylic polymer hollow spheres, 40 parts of water, 0.5 part of thickener, 0.1 part of pigment, 20 parts of filler, 1 part dispersant, 1.1 parts of defoamer, 1.2 parts of propylene glycol and 0.7 parts of preservative. Among them, the main material is water-based polyurethane resin, the elastic elongation rate is 1200%, and the glass transition temperature is -20°C; the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate, and the particle size is 40 Micron, the thickener is hydroxyethyl cellulose; the preservative is benzisothienone; the defoamer is silicone; the filler is calcium carbonate; the pigment is indoline.

Disperse and mix water, dispersant, propylene glycol, pigment and filler in a disperser at 1500 rpm, add defoamer during mixing; then reduce the speed of dispersant to 500 rpm, add main ingredients, acrylic acid polymerization Hollow spheres, preservatives and thickeners are used to obtain a slurry with a viscosity of 110ku, which is the thermal insulation coating.

The thermal insulation coating of this embodiment is sprayed on the surface of the building, and the coating thickness is 1 mm. After drying, the thermal insulation coating is formed. The thermal insulation coating prepared by the thermal insulation coating of this embodiment is obtained by using the test method of Example 1. The thermal conductivity is shown in Table 1.

Using the same test method as in Example 1 to obtain the waterproof performance of the thermal insulation coating in this example is shown in Table 1.

And the thermal insulation coating of this embodiment has a porous structure similar to that of the thermal insulation coating of Example 1.

Example 3

The preparation process of the thermal insulation coating of the present embodiment is as follows:

Weigh the following components in parts by mass: 30 parts of main material, 3 parts of acrylic polymer hollow spheres, 15 parts of water, 1 part of thickener, 10 parts of pigment, 0.1 part of filler, 0.5 part of dispersant, 1 part of defoamer, 1.8 parts of propylene glycol and 0.1 part of preservative. Among them, the main material is water-based acrylic resin, the elastic elongation is 1000%, and the glass transition temperature is -25°C; the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate, and the particle size is 20um , the thickener is methyl cellulose; the preservative is benzisothienone; the defoamer is silicone, the pigment is benzimidazole copper, and the filler is high-territorial.

Disperse and mix water, dispersant, propylene glycol, pigment and filler in a disperser at 1500 rpm, add defoamer during mixing; then reduce the speed of dispersant to 500 rpm, add main ingredients, acrylic acid polymerization Hollow balls, preservatives and thickeners to obtain a slurry with a viscosity of 90ku, which is the thermal insulation coating.

Brush the thermal insulation coating of this embodiment on the surface of the building with a coating thickness of 1.5 mm. After drying, a thermal insulation coating is formed. The thermal insulation coating prepared by the thermal insulation coating of this embodiment is obtained by using the test method of Example 1. The thermal conductivity can be seen in Table 1.

Using the same test method as in Example 1 to obtain the waterproof performance of the thermal insulation coating in this example is shown in Table 1.

And the thermal insulation coating of this embodiment has a porous structure similar to that of the thermal insulation coating of Example 1.

Example 4

The preparation process of the thermal insulation coating of the present embodiment is as follows:

Weigh the following components in parts by mass: 25 parts of main material, 13 parts of acrylic polymer hollow spheres, 30 parts of water, 1 part of thickener, 5 parts of pigment, 15 parts of filler, 0.5 parts of dispersant, 1 part of defoamer, 1.5 parts of propylene glycol and 0.4 parts of preservative. Among them, the main material is water-based acrylic resin, the elastic elongation is 800%, and the glass transition temperature is -10°C; the acrylic polymer hollow sphere is a copolymer hollow sphere of methyl methacrylate and butyl acrylate, and the particle size is 50um The thickener is methyl cellulose; the preservative is isothiazolinone; the defoamer is mineral oil, the pigment is permanent red, and the filler is kaolin.

Disperse and mix water, dispersant, propylene glycol, pigment and filler in a disperser at 1500 rpm, add defoamer during mixing; then reduce the speed of dispersant to 500 rpm, add main ingredients, acrylic acid polymerization Hollow spheres, preservatives and thickeners are used to obtain a slurry with a viscosity of 100ku, which is the thermal insulation coating.

Brush the thermal insulation coating of this embodiment on the surface of the building, and the coating thickness is 1.5 mm. After drying, a thermal insulation coating is formed, and the thermal insulation coating prepared by the thermal insulation coating of this embodiment is obtained by using the test method of Example 1. The thermal conductivity can be seen in Table 1.

Using the same test method as in Example 1 to obtain the waterproof performance of the thermal insulation coating in this example is shown in Table 1.

And the thermal insulation coating of this embodiment has a porous structure similar to that of the thermal insulation coating of Example 1.

Comparative example 1

The preparation process of the thermal insulation coating of comparative example 1 is as follows:

Weigh the following components according to the number of parts by mass: 25 parts of main material, 13 parts of heavy calcium carbonate powder, 30 parts of water, 1 part of thickener, 5 parts of pigment, 15 parts of filler, 0.5 part of dispersant, 1 part of defoamer, 1.5 parts of propylene glycol and 0.2 parts of preservative. Among them, the main material is water-based acrylic resin, the elastic elongation is 800%, and the glass transition temperature is -10°C; the thickener is methyl cellulose; the preservative is isothiazolinone; the defoamer is mineral oil; The agent is kaolin; the pigment is titanium dioxide powder.

Disperse and mix water, dispersant, propylene glycol, pigment and filler in a disperser at 1500 rpm, add defoamer during mixing; then reduce the speed of dispersant to 500 rpm, add main ingredients, heavy Calcium carbonate powder, preservative and thickener to obtain a slurry with a viscosity of 100ku, which is the thermal insulation coating.

Brush the thermal insulation coating of comparative example 1 on the surface of the building, and the coating thickness is 1.5 millimeters, after drying, form thermal insulation coating, adopt the test method of embodiment 1 to obtain the thermal insulation coating that the thermal insulation coating of comparative example 1 is prepared to form The thermal conductivity can be seen in Table 1.

Using the same test method as in Example 1 to obtain the waterproof performance of the thermal insulation coating in Comparative Example 1 is shown in Table 1.

Table 1 shows the thermal conductivity and waterproof performance of the thermal insulation coatings prepared from the thermal insulation coatings of Examples 1-4 and Comparative Example 1.

Table 1

It can be seen from Table 1 that the thermal conductivity of the thermal insulation coating formed by the thermal insulation coatings of Examples 1-4 is only 0.086W/m·K at most, and the increase of acrylic polymer hollow spheres can significantly reduce the thermal conductivity of the thermal insulation coating rate, while the thermal conductivity of the thermal insulation coating formed by the thermal insulation coating of Comparative Example 1 is as high as 0.41W/m K, and its thermal conductivity is much higher than that of the thermal insulation coatings of Examples 1 to 4. Obviously, the thermal insulation coatings of Examples 1-4 have excellent thermal insulation effects.

It can be seen from Table 1 that the waterproof performance of the thermal insulation coatings formed by the thermal insulation coatings of Examples 1-4 has excellent waterproof effect.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a thermal insulation coatings, it is characterised in that include following component according to mass fraction: 15～30 parts Major ingredient, the acrylate copolymer hollow ball of 3～22 parts, the water of 15～40 parts and the thickening agent of 0.5～1.5 part, its In, described major ingredient is the fluoropolymer resin that elastic extension is more than 800%, vitrification point is below-10 DEG C.

Thermal insulation coatings the most according to claim 1, it is characterised in that described major ingredient is selected from aqueous acrylamide One in acid resin and waterborne polyurethane resin.

Thermal insulation coatings the most according to claim 1, it is characterised in that described acrylate copolymer is hollow Ball is the copolymer hollow ball of methyl methacrylate and butyl acrylate.

Thermal insulation coatings the most according to claim 1, it is characterised in that described acrylate copolymer is hollow The particle diameter of ball is 20～50 microns.

Thermal insulation coatings the most according to claim 1, it is characterised in that described thickening agent is Methyl cellulose Element or hydroxyethyl cellulose.

Thermal insulation coatings the most according to claim 1, it is characterised in that also include that mass fraction is 0.1～10 The pigment of part.

Thermal insulation coatings the most according to claim 1, it is characterised in that also include that mass fraction is 0.1～20 The filler of part, described filler is Kaolin or calcium carbonate.

Thermal insulation coatings the most according to claim 1, it is characterised in that also include that mass fraction is 0.5～1 The dispersant of part.

9. the preparation method of a thermal insulation coatings, it is characterised in that comprise the steps:

Following component is weighed: the major ingredient of 15～30 parts, the acrylate copolymer of 3～22 parts are empty according to mass fraction Bulbus cordis, the water of 15～40 parts and the thickening agent of 0.5～1.5 part, wherein, described major ingredient is that elastic extension is 800% Above, vitrification point fluoropolymer resin below-10 DEG C；And

Described water, major ingredient, acrylate copolymer hollow ball and thickening agent being mixed, obtaining viscosity is 90～110ku Slurry.

10. a heat insulation coating, it is characterised in that described heat insulation coating is by claim 1～8 any one Described thermal insulation coatings preparation is formed, and the thickness of described heat insulation coating is 1～1.5 millimeter.