Preparation method of core-shell structural high-transparency low-radiation heat-insulating composite nanometer coating

A composite nanomaterial and core-shell structure technology is applied in the field of preparation of high-transparency and low-radiation heat-insulating composite nanocoatings to achieve the effects of low cost, high repeatability and high efficiency

Inactive Publication Date: 2014-05-07
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Analysis of existing patented technologies found that there is no report on the preparation of high-transparency, low-radiation and heat-insulating composite nano-coatings with core-shell structure by mechanochemical methods

Method used

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  • Preparation method of core-shell structural high-transparency low-radiation heat-insulating composite nanometer coating
  • Preparation method of core-shell structural high-transparency low-radiation heat-insulating composite nanometer coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Preparation of highly transparent and low-radiation heat-insulating nanomaterials with core-shell structure

[0035] 1) Add 2% by weight of silane coupling agent KH570 and tin antimony oxide particles to absolute ethanol, mix well and then use a high-energy ball mill for ball milling with a ball-to-material ratio of 30:1, ball milling speed 300r / min, hours, separated by filtration, washed, and dried to obtain evenly modified core layer antimony tin oxide nanoparticles, wherein the addition of antimony tin oxide particles is 200g / L;

[0036] 2) Disperse the modified core-layer antimony oxide nanoparticles obtained in step 1), tetrabutyl titanate, the precursor of shell-layer nanoparticles, and saturated ammonia solution into absolute ethanol solution, and then perform high-speed ball milling. The material ratio is 10:1, the ball milling speed is 500r / min, and the ball milling is 32 hours, then filtered, washed, and dried to obtain a composite nanomaterial with ...

Embodiment 2

[0042] Example 2 Preparation of highly transparent and low-radiation heat-insulating nanomaterials with core-shell structure

[0043] 1) Add 0.9% by weight of silane coupling agent KH550 and indium tin oxide particles to isopropanol, mix well and then use a high-energy ball mill to mill with a ball-to-material ratio of 20:1, a ball mill speed of 500r / min, and a ball mill of 2 hours, separated by filtration, washed, and dried to obtain evenly modified core layer indium tin oxide nanoparticles with particle diameters, wherein the addition of indium tin oxide particles is 180g / L;

[0044] 2) Disperse the modified core-layer indium tin oxide nanoparticles obtained in step 1), the precursor of shell-layer nanoparticles-tetraethyl titanate, and saturated ammonia solution into isopropanol solution, and then perform high-speed ball milling. The material ratio is 15:1, the ball milling speed is 400r / min, and the ball milling is 40 hours, then filtered, washed, and dried to obtain a com...

Embodiment 3

[0050] Example 3 Preparation of a high-transparency, low-emissivity heat-insulating nanomaterial with a core-shell structure

[0051] 1) Add 2.5% by weight of silane coupling agent KH560 and vanadium dioxide particles to methanol, mix evenly and use a high-energy ball mill for ball milling with a ball-to-material ratio of 25:1, ball milling speed of 400r / min, and ball milling for 4 hours. Separation by filtration, washing, and drying to obtain vanadium dioxide nanoparticles in the core layer with uniform particle size modification, wherein the addition of vanadium dioxide particles is 150g / L;

[0052] 2) Disperse the modified core-layer vanadium dioxide nanoparticles and shell-layer nanoparticle precursors-titanium sulfate and saturated ammonia solution obtained in step 1) into methanol solution, and then perform high-speed ball milling with a ball-to-material ratio of 25 : 1, ball milling speed 200r / min, ball milling 48 hours, then filter, wash, dry, obtain the composite nano...

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Abstract

The invention belongs to the technical field of a functional nanometer material, and particularly relates to a preparation method of a core-shell structural high-transparency low-radiation heat-insulating composite nanometer coating. The method comprises the following steps: (1) adding and mixing a surface active agent and inorganic semiconductor particles in a solvent, and preparing core layer inorganic semiconductor nanometer particles by means of high-speed ball milling; (2) dispersing a modified core layer, a shell layer precursor and an ammonia water solution in an alcohol solvent, and performing high-speed ball milling to obtain a core-shell structural nanometer material powder body; (3) roasting to obtain a core-shell structural composite nanometer material; (4) dispersing the core-shell structural composite nanometer material in an organic solvent, and mechanically stirring to obtain a dispersion liquid of the composite nanometer material; (5) mixing the dispersion liquid with organic resin, a flatting agent and a defoaming agent, and mechanically stirring to obtain the high-transparency low-radiation heat-insulating composite nanometer coating. The high-transparency low-radiation heat-insulating composite nanometer coating can be used for coating glass and plastic surfaces by means of spray coating, brush coating, roller coating and the like, and has the effects of high transparency, low radiation and heat insulation.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a method for preparing a core-shell structure high-transparency, low-radiation heat-insulating composite nano-coating. Background technique [0002] As we all know, the sun is the main heat source of the earth, bringing light and heat to the earth in the form of electromagnetic radiation. Due to the existence of the ozone layer in the surface atmosphere, the wavelengths of solar radiation received by the earth are mainly distributed in the range of 250-2500 nanometers. Among them, the radiant energy in the ultraviolet light region of 250-400 nanometers accounts for about 5% of the total energy received by the surface of the sun, the radiant energy in the visible light region of 400-720 nanometers accounts for about 45%, and the near-infrared light region of 720-2500 nanometers The radiant energy accounts for about 45%, and the radiant energy gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/00C09D7/12C09D5/00
Inventor 朱英孔壮鹿现永江雷
Owner BEIHANG UNIV
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