Water-proof coating system for reflecting solar radiation and water-borne coating for forming decorative and reflective layer in coating system

Abstract

A water-proof coating system for reflecting solar radiation, which comprises optionally a base layer on a substrate and a reinforcing layer on the base layer; a white reflective and water-proof layer on the substrate or on the reinforcing layer; and a decorative and reflective layer on the white reflective and water-proof layer; wherein the decorative and reflective layer comprises colored infrared-reflective pigments. Water-borne coatings for forming a decorative and reflective layer in the coating system, which comprise acrylic polymers, colored infrared-reflective pigments and UV cross-linking agents. Said coating system can reflect solar radiation with high efficiency and effectively prevent water from penetrating through; has strong stain resistance and good weather resistance; has strong adhesion to various substrates; and also offers diversified colors for choosing. Said water-borne coatings can be applied easily, and are environment friendly.

Description

technical field

[0001] The present invention relates to a waterproof coating system for reflecting solar radiation and to an aqueous paint for forming a decorative reflective layer in said coating system, said aqueous paint comprising an acrylic polymer, a colored infrared reflective pigment and a UV crosslinking agent. Background technique

[0002] The solar radiation reaching the earth's surface provides the necessary conditions for human existence and daily life, and at the same time it inevitably causes an increase in the temperature inside buildings such as houses, offices, and factories because their outer surfaces absorb heat from the solar radiation. To reduce the internal temperature of the building,

[0003] Cooling equipment such as showers, air conditioning and ventilation is required and consumes a lot of energy.

[0004] Applying coatings - which are effective at reflecting solar radiation - to the exterior surfaces of buildings such as houses, offices and fa...

Examples

Embodiment 1

[0099] The formulation of the water-based paint used to form the white reflective waterproof layer in the coating system is shown in Table 1 below, and the pH value of the water-based paint is 9.5.

[0100] Table 1 is used to form the water-based paint 1 of white reflective waterproof layer

[0101]

[0102]

[0103] The formulation of the waterborne paint used to form the gray decorative reflective layer in the coating system is shown in Table 2 below.

[0104] Table 2 is used to form the water-based paint 2 of the gray decorative reflective layer

[0105]

[0106] At a temperature of 32°C and a relative humidity of 20%, the water-based paint 1 was applied at a rate of 0.82kg / m 2 The amount of is sprayed onto colored steel plate (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 400 μm; at a temperature of 32°C and a relative humidity of 20 %, water-based paint ...

Embodiment 2

[0108] The formulation of the water-based paint used to form the white reflective waterproof layer in the coating system is shown in Table 3 below, and the pH value of the water-based paint is 9.5.

[0109] Table 3 is used to form the water-based paint 3 of white reflective waterproof layer

[0110]

[0111] The formulation of the waterborne paint used to form the dark green decorative reflective layer in the coating system is shown in Table 4 below.

[0112] Table 4 is used to form the water-based paint 4 of dark green decorative reflective layer

[0113]

[0114]

[0115] a Purchased from BASF, the same below.

[0116] At a temperature of 23°C and a relative humidity of 50%, the water-based paint 3 was applied at a rate of 0.82kg / m 2 The amount of is sprayed onto colored steel plate (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 400 μm; at a temperature of...

Embodiment 3

[0118] The formulation of the waterborne paint used to form the white reflective waterproof layer in the coating system is shown in Table 5 below, and the pH value of the waterborne paint is 9.5.

[0119] Table 5 is used to form the water-based paint 5 of white reflective waterproof layer

[0120]

[0121]

[0122] The waterborne paints used to form the dark green decorative reflective layer in the coating system are shown in Table 4 above.

[0123] At a temperature of 32°C and a relative humidity of 20%, the water-based paint 5 was applied at a rate of 1kg / m 2 The amount of is sprayed onto colored steel plates (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 500 μm; at a temperature of 32°C and a relative humidity of 20 %, water-based paint 4 at 0.56kg / m 2 The amount of is sprayed onto the white reflective waterproof layer, and UV cured under ambient conditions to ...

technical field

[0001] The present invention relates to a waterproof coating system for reflecting solar radiation and to an aqueous paint for forming a decorative reflective layer in said coating system, said aqueous paint comprising an acrylic polymer, a colored infrared reflective pigment and a UV crosslinking agent. Background technique

[0002] The solar radiation reaching the earth's surface provides the necessary conditions for human existence and daily life, and at the same time it inevitably causes an increase in the temperature inside buildings such as houses, offices, and factories because their outer surfaces absorb heat from the solar radiation. To reduce the internal temperature of the building,

[0003] Cooling equipment such as showers, air conditioning and ventilation is required and consumes a lot of energy.

[0004] Applying coatings - which are effective at reflecting solar radiation - to the exterior surfaces of buildings such as houses, offices and fa...

Examples

Embodiment 1

[0099] The formulation of the water-based paint used to form the white reflective waterproof layer in the coating system is shown in Table 1 below, and the pH value of the water-based paint is 9.5.

[0100] Table 1 is used to form the water-based paint 1 of white reflective waterproof layer

[0101]

[0102]

[0103] The formulation of the waterborne paint used to form the gray decorative reflective layer in the coating system is shown in Table 2 below.

[0104] Table 2 is used to form the water-based paint 2 of the gray decorative reflective layer

[0105]

[0106] At a temperature of 32°C and a relative humidity of 20%, the water-based paint 1 was applied at a rate of 0.82kg / m 2 The amount of is sprayed onto colored steel plate (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 400 μm; at a temperature of 32°C and a relative humidity of 20 %, water-based paint ...

Embodiment 2

[0108] The formulation of the water-based paint used to form the white reflective waterproof layer in the coating system is shown in Table 3 below, and the pH value of the water-based paint is 9.5.

[0109] Table 3 is used to form the water-based paint 3 of white reflective waterproof layer

[0110]

[0111] The formulation of the waterborne paint used to form the dark green decorative reflective layer in the coating system is shown in Table 4 below.

[0112] Table 4 is used to form the water-based paint 4 of dark green decorative reflective layer

[0113]

[0114]

[0115] a Purchased from BASF, the same below.

[0116] At a temperature of 23°C and a relative humidity of 50%, the water-based paint 3 was applied at a rate of 0.82kg / m 2 The amount of is sprayed onto colored steel plate (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 400 μm; at a temperature of...

Embodiment 3

[0118] The formulation of the waterborne paint used to form the white reflective waterproof layer in the coating system is shown in Table 5 below, and the pH value of the waterborne paint is 9.5.

[0119] Table 5 is used to form the water-based paint 5 of white reflective waterproof layer

[0120]

[0121]

[0122] The waterborne paints used to form the dark green decorative reflective layer in the coating system are shown in Table 4 above.

[0123] At a temperature of 32°C and a relative humidity of 20%, the water-based paint 5 was applied at a rate of 1kg / m 2 The amount of is sprayed onto colored steel plates (coated with polyester), and cured by self-crosslinking under ambient conditions to obtain a white reflective waterproof layer with a dry film thickness of 500 μm; at a temperature of 32°C and a relative humidity of 20 %, water-based paint 4 at 0.56kg / m 2 The amount of is sprayed onto the white reflective waterproof layer, and UV cured under ambient conditions to ...

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