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Synthesized polyurethane glass heat insulating paint and its preparation method

A thermal insulation coating, polyurethane technology, applied in polyurea/polyurethane coatings, fire-retardant coatings, coatings, etc., can solve the problems of difficulty in entering ordinary people's homes, high prices, unfavorable on-site construction, etc., and achieve smooth and smooth visibility. The effect of low price and low production cost

Inactive Publication Date: 2007-01-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly low-emissivity coated glass produced by magnetron sputtering method and float online chemical vapor deposition (CVD), but the price is relatively high, and it is difficult to enter the homes of ordinary people.
[0004] In addition, the existing nano-transparent heat-insulating glass coating needs to be baked and cured in an oven when used, which is not conducive to on-site construction

Method used

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  • Synthesized polyurethane glass heat insulating paint and its preparation method
  • Synthesized polyurethane glass heat insulating paint and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0036] Examples 1-5 The formulations for the preparation of water-based polyurethane transparent heat-insulating coatings are shown in Table 1. During the preparation, firstly, the nano-ATO (antimony-doped tin dioxide) slurry is slowly dropped into the water-based polyurethane, and stirred with a magnetic stirrer. Then take an appropriate amount of paint and apply it evenly on the clean glass surface with a wire bar coater or QZB wet film maker. After 30-50 minutes, the film layer will harden automatically without drying in an oven.

[0037]

components

Implementation example (weight percent %)

1

2

3

4

5

Waterborne Polyurethane

Nano ATO slurry

Stiring time

Coating tool

Film automatic hardening time

40

60 (16%)

10 minutes

QZB wet film preparation device

50 minutes

50

50 (20%)

15 minutes

Wire Bar Coater

38 minutes

75

25 (20%)

20 minutes

...

Embodiment 6-10

[0049] The formula of embodiment 6~10 polyurethane varnish transparent heat-insulating coatings is as shown in table 3, during preparation, at first polyurethane varnish A, B component are mixed by the weight percentage of 8:5, and stir 10 minutes with agitator (that is, The first stirring in the table), some formulas need to add a certain amount of diluent during the stirring process, see Table 3 for details. Then slowly add the nano-ATO (antimony tin oxide) slurry dropwise into the mixed polyurethane varnish, and stir it with magnetic stirring (that is, the second stirring in Table 3 below), and then take an appropriate amount of coating with a wet film preparer Apply evenly on a clean glass surface. After 30-50 minutes, the film layer will harden automatically without drying in an oven.

[0050] The percentage in the brackets of the nano-ATO slurry in Table 3 is the solid content number, and the polyurethane varnish is prepared by its A and B components in a weight p...

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Abstract

The present invention discloses a synthetic polyurethane glass heat-insulating coating and its preparation method. Said coating includes (by wt%) 40-90% of synthetic polyurethane resin, 10-60% of nano ATO slurry and diluting agent, the solid content of nano ATO slurry is 10-30%, grain size is 50-100 nm and coating wet film thickness is 20-400 micrometers. Its preparation method includes the following steps: firstly, drop-adding the above-mentioned nano ATO slurry into water-base polyurethane, stirring them for 10-30 min so as to obtain synthetic polyurethane glass heat-insulating coating. The glass made up by using said coating has higher visible light transmittance, at the same time has high reflectivity for infrared ray (heat radiation).

Description

technical field [0001] The invention relates to a nano-functional coating, in particular to a synthetic polyurethane glass heat-insulating coating and a preparation method thereof. Background technique [0002] At present, energy-saving glass on the market mainly includes heat-reflective coated glass and low-emissivity coated glass. Heat-reflective glass is coated with metal, non-metal and its oxide film on the glass surface to make it have a certain reflection effect, which can reflect solar energy back into the atmosphere and achieve the purpose of blocking solar heat from entering the room. The less solar energy enters the house, the less air conditioning load will be. The higher the reflectivity of heat-reflective glass, the stronger it can control solar energy, but the visible light transmittance of the glass will decrease with the increase of the reflectivity, which will reduce the light transmission performance and affect the lighting effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/18
Inventor 孟庆林
Owner SOUTH CHINA UNIV OF TECH