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Heat insulation coating capable of reflecting solar heat rays

A heat-insulating coating and heat-reflecting technology, applied in reflective/signal coatings, fire-retardant coatings, polyurea/polyurethane coatings, etc., can solve the problem of poor dispersion of hollow microbeads, uneven coating layer, and reduced thermal insulation performance of coatings, etc. question

Inactive Publication Date: 2008-02-13
马承银
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hollow microspheres have thin walls, and the hollow microspheres are severely damaged during the vigorous stirring process, thereby reducing the heat insulation performance of the coating; moreover, the hollow microspheres are poorly dispersed in water, so the formed coating layer is not uniform and also Affect the reflection efficiency of heat rays; third, the reflection surface of the hollow microsphere is a spherical surface, so the light reflection component is mainly diffuse reflection, which weakens the reflection efficiency of sunlight, thus reducing the sunlight reflection efficiency of the finished coating. reflection efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

reference example 1

[0018] Reference Example 1 Preparation of antimony oxide-snium oxide coated mica heat-reflecting composite material

[0019] Antimony oxide-snium oxide coated mica heat ray reflective composites were prepared by solution-gel method. Use antimony chloride to make solution A of 0.1-2mol / L, and tin tetrachloride to make solution B of 0.1-2mol / L. The two solutions of A and B are mixed, and the mixing ratio is 1-9:9-1, which is determined as required. Add the required amount of flaky inorganic materials into the mixture, and stir to suspend them. The pH of the solution is adjusted to 5-9, the reaction temperature is 20-70° C., and the reaction time is 3 hours. After filtering, washing and drying, heat treatment at 500-700°C for 3 hours. The antimony oxide-snium oxide coated mica heat ray reflective composite material is obtained.

reference example 2

[0020] Reference Example 2: Preparation of Titanium Dioxide Coated Mica Reflective Heat Ray Composite Material

[0021] Titanium dioxide-coated mica heat-reflecting composites were prepared by hydrothermal method. In 0.01-2mol / L titanium sulfate solution, add mica powder. In a closed reactor with magnetic stirring, heat to 140-180°C and react for 5 hours. Then, it is filtered and dried to obtain a titanium dioxide-coated mica reflective heat ray composite material.

Embodiment 1-7

[0022] Embodiment 1-7: Primer coating and preparation thereof

[0023] Primer coating embodiment of the present invention is as shown in table 1:

[0024] Table 1 formula of heat-reflective coating primer embodiment of the present invention unit: kg

[0025] Material

example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

water

20

20

20

20

20

20

20

Dispersant

0.5

0.5

0.5

0.5

0.5

0.5

0.5

leveling agent

2

1.5

1

1

1.5

2

1.5

Propylene Glycol

2

2

2

2

2

2

2

Defoamer

0.1

0.1

0.1

0.1

0.1

0.1

0.1

Titanium dioxide

10

15

15

5

17

17

5

Hollow glass beads

10

5

3

15

Hollow Ceramic Beads

5

1...

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Abstract

A heat-insulating coating for reflecting solar heat rays, which is composed of two parts: a primer and a top-coat. 10-50%, adhesive polymer resin 10-70%; the percentage of solid matter in the top coating is: surface coating reflective heat ray composite material 5-40%, heat reflective material 10-50%, adhesive Polymer resin 10-70%. The coating of the present invention is mainly used as the exterior surface coating of buildings, automobiles, trains, pipelines, storage tanks, etc. When the thickness of the dry coating film is 0.3-0.5mm, the total reflectance to heat rays can reach 85-90%, which can effectively prevent Thermal radiation from the sun.

Description

technical field [0001] The invention relates to a thermal insulation coating, in particular to a thermal insulation coating reflecting solar heat rays. Background technique [0002] Most of the energy of sunlight is concentrated in the near infrared and visible range. After being absorbed by the atmosphere, of the total energy of sunlight reaching the ground, visible light accounts for 45%, infrared rays account for 50%, and other electromagnetic radiation energy accounts for 5%. 95% of the infrared radiation energy is concentrated in the wavelength range of 720-2500nm, that is, in the near-infrared range. The object irradiated by sunlight absorbs the energy of visible light and infrared light and converts it into heat energy, which raises the temperature of the object's surface. In summer, under the sunlight, the surface of the building absorbs solar energy, and then transmits it to the room to increase the room temperature. In order to reduce the indoor temperature, peo...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D175/04C09D183/04C09D5/18C09D5/33C09D7/61
CPCC08K7/28C08K3/22C09D7/1216C09D5/004C09D7/1291C09D7/61C09D7/70
Inventor 马承银
Owner 马承银
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