Nano composite transparent heat-insulating coating and preparation method thereof

A heat-insulating coating and nano-composite technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of complex process conditions, poor heat insulation effect, and high production costs, and achieve simple process conditions and good visible light transmission. efficiency and low production cost

Inactive Publication Date: 2014-04-30
SHANXI YUBANG NEW POWER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nano-composite transparent heat-insulating coating and its preparation method to solve the problems of opacity, high production cost, complicated process conditions, large pollution and poor heat-insulating effect in existing heat-insulating coating products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of gallium trioxide-tin dioxide nanopowder

[0033] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 4mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.

[0034] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry

[0035] Add 40g of absolute ethanol and 18g of gallium trioxide-...

Embodiment 2

[0039] (1) Preparation of gallium trioxide-tin dioxide nanopowder

[0040] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 7mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.

[0041] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry

[0042] Add 40g of absolute ethanol and 18g of gallium trioxide-...

Embodiment 3

[0046] (1) Preparation of gallium trioxide-tin dioxide nanopowder

[0047] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 7mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.

[0048] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry

[0049] Add 40g of absolute ethanol and 18g of gallium trioxide-...

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Abstract

The invention relates to a nano composite transparent heat-insulating coating and a preparation method thereof. The heat-insulating coating comprises the following raw materials in percentage by mass: 30 to 80 percent of gallium sesquioxide-tin dioxide ethanol slurry, 10 to 65 percent of film-forming agent, 1 to 3 percent of thickening agent, 0.5 to 1 percent of flatting agent and 2 to 5 percent of dispersing agent. The method for preparing the heat-insulating coating comprises the following steps of; preparing gallium sesquioxide-tin dioxide nano powder, preparing the gallium sesquioxide-tin dioxide ethanol slurry, and preparing the heat-insulating coating. The nano composite transparent heat-insulating coating has the advantages of high visible light transmissivity and infrared light reflectivity, low production cost, environment friendliness, high transparency, good heat-insulating effect and the like and has high application value and a broad market prospect, and the process condition is simple.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a nanocomposite transparent heat insulation coating and a preparation method thereof. Background technique [0002] The energy of solar radiation is mainly concentrated in the range of wavelength 0.2~2.5μm, among which, the ultraviolet region is 0.2~0.4μm, accounting for 5% of the total energy; the visible light region is 0.4~0.72μm, accounting for 45% of the total energy; The infrared region is 0.72~2.5μm, accounting for 50% of the total energy. In this wavelength range, most of the energy in the solar spectrum is distributed in the visible light and near-infrared regions, of which the near-infrared region accounts for half of the energy. Infrared light does not contribute to the visual effect. If this part of energy is effectively blocked, a good heat insulation effect can be achieved. Therefore, the development of a nano-transparent heat-insulating material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D183/04C09D175/04C09D7/12C09D5/00
Inventor 张宇
Owner SHANXI YUBANG NEW POWER SCI & TECH
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