Transparent heat insulating dope and preparation method thereof

A heat-insulating coating, transparent technology, applied in fire-resistant coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problem of processing metal-coated heat-reflecting glass and heat-reflecting film with high, low visible light transmittance, high process conditions, etc. Problems, to achieve the effect of simple and easy preparation and construction process, transparent and uniform appearance of the coating film, and high visible light transmittance

Inactive Publication Date: 2008-05-28
SOUTH CHINA UNIV OF TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although metal-coated heat-reflective glass has a good heat insulation effect, its transmittance in visible light is very low (only about 20%). If it is applied to building glass, it will affect indoor lighting to a certain extent; Glass' high reflectivity of visible light causes "light pollution" and its use in buildings is currently limited
Although all kinds of heat reflective film glass have high visible light transmittance (>50%), the

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  • Transparent heat insulating dope and preparation method thereof

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Effect test

Embodiment 1

[0047] Embodiment 1: In a new high-grade office building, the product of the present invention is used to coat the glass on the exterior wall. The formula (total weight in 100 kg) is: 40 kg of aqueous polyurethane dispersion (solid content 30%), nano powder slurry (serial number 1 formula, adjusting pH to 6.5, homogenizing on a high-speed homogenizer for 30 min, using Ultrasonic dispersion 20 times) 15 kg, TD-441 0.02 kg, DF-5680.04 kg, ethylene glycol monobutyl ether 0.1 kg, water 44.84 kg, adjust the pH value to 6.5, and stir for 20 minutes to obtain a transparent heat-insulating coating. Before construction, use special cleaners and tools to thoroughly clean the window glass, pour the mixed main paint of heat insulation paint into the coating tank, use a special applicator to evenly dip the heat insulation paint in the tank, and apply it evenly on the existing Treated glass surface. The coating is a one-component room temperature curing type, which is surface dry in 1 hour...

Embodiment 2

[0048] Embodiment 2: In a new villa area, in order to improve the heat insulation effect, the product of the present invention is used to coat the outer wall with glass. The formula (total weight in 100 kg) is: 45 kg of aqueous PU dispersion (solid content 32.5%), nano powder dispersion slurry (No. , using ultrasonic dispersion 25 times) 20 kg, TD-4410.04 kg, DF-568 0.06 kg, ethylene glycol monobutyl ether 0.3 kg, water 34.6 kg, adjust the pH value to 7, and stir for 25 minutes to obtain a transparent heat-insulating coating. Before construction, use special cleaners and tools to thoroughly clean the window glass, pour the mixed main paint of heat insulation paint into the coating tank, use a special applicator to evenly dip the heat insulation paint in the tank, and apply it evenly on the existing Treated glass surface. The coating is a one-component room temperature curing type, which is surface dry in 1 hour and hard dry in 8 hours. For coated glass, do not scrub for two ...

Embodiment 3

[0049]Embodiment 3: In a shopping mall, in order to improve the heat insulation and light transmission effect of the shopping mall, the product of the present invention is used to coat the glass for the outer wall. The formula (total weight in 100 kg) is: 50 kg of aqueous PU dispersion (solid content 35%), nano-powder dispersion slurry (serial number 3 formula, adjust the pH value to 7.5, after homogenizing on a high-speed homogenizer for 60 minutes) , using ultrasonic dispersion 30 times) 25 kg, TD-441 0.06 kg, DF-568 0.08 kg, dipropylene glycol butyl ether 0.5 kg, water 24.36 kg, adjust the pH value to 7.5, and stir for 30 minutes to obtain a transparent heat-insulating coating. Before construction, use special cleaners and tools to thoroughly clean the window glass, pour the mixed main paint of heat insulation paint into the coating tank, use a special applicator to evenly dip the heat insulation paint in the tank, and apply it evenly on the existing Treated glass surface. ...

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Abstract

The invention discloses a transparent heat insulation coating and process for preparation. A mixed solvent of dispersant, defoaming agent, deionized water and absolute ethyl alcohol and nano-powder are put into a beaker, the PH value is regulated to 6.5 to 7.4, and homogenate of 30 minutes to 60 minutes is implemented on a high speed homogenizer, and 20 to 30 times of ultrasonic dispersion is performed. Ultrasonic agitation is conducted, and when the ultrasonic agitation is stopped, cold air is let in. Further, water polyurethane dispersoid, the defoaming agents, thickening agents and texanol are added in, the PH value is regulated to 6.5 to 7.5, the homogenate of 20 to 30 minutes is conducted on the high speed homogenizer, and the transparent heat insulation coating is obtained. The invention is simple in preparation and needs no investment of expensive large-scale equipment, the preparation and construction technology is simple and convenient, which effectively reduces the manufacture costs and is favorable for popularization in markets. The transparent heat insulation coating of the invention has the advantages of comparatively high visible light transmittance, infrared reflectivity, transparent and uniform appearance of painting film, high rigidity, good adhesive force, strong wash resistance and ultraviolet ray aging resistance.

Description

technical field [0001] The invention relates to a transparent heat-insulating coating used on building glass, in particular to a transparent heat-insulating coating and a preparation method thereof. Background technique [0002] With the rapid development of social economy, energy saving has become the focus of the whole society. Since ordinary glass is not selective to sunlight, when the sunlight passes through the glass window, the heat generated by the sunlight radiation is also transmitted into the room at the same time, increasing the indoor temperature. The poor heat insulation effect of ordinary glass is one of the main reasons for the energy loss or energy consumption increase of buildings. The hot summer makes the air conditioning load significantly increase. [0003] At present, metal-coated heat-reflecting glass and various heat-reflecting films are mainly used in the market to block the transmission of part of the sunlight to achieve the purpose of heat insulati...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/18
Inventor 涂伟萍黄燕黄照山
Owner SOUTH CHINA UNIV OF TECH
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