Solvent type transparent nanometer thermal insulation sizing agent and application method thereof

A nano heat-insulating, solvent-based technology, applied in the field of coatings, can solve the problems of low transmittance, short storage time, single variety of heat-insulating particles, etc., achieve improved weather resistance and chemical resistance, and strong solar spectrum selectivity , Inhibit the effect of Cr6+

Inactive Publication Date: 2013-11-13
武汉羿阳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, the nano heat-insulating coatings currently on the market have the following problems: 1. The particle size of the heat-insulating particles is too large, resulting in low transmittance, excessive haze, and poor heat-insulating effect; 2. The surface of the heat-insulating particles in the coating is not well treated 3. The heat insulation particles selected are single, mostly ITO or ATO, which cannot completely and effectively control the solar spectrum radiation in the wavelength of 800~2500nm; 4. The weather resistance is poor, and the long-term Over time, there will be problems such as fading and poor heat insulation effect

Method used

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  • Solvent type transparent nanometer thermal insulation sizing agent and application method thereof
  • Solvent type transparent nanometer thermal insulation sizing agent and application method thereof
  • Solvent type transparent nanometer thermal insulation sizing agent and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0076] 1) Preparation of nano thermal insulation particles

[0077] Preparation of Nano WO 3 -x Powder: Dissolve ammonium tungstate in deionized water at room temperature, stir and add 65% nitric acid dropwise at the same time, until the pH value of the solution system is in the range of 1~3, slowly warm up to 80℃, keep for 1 hour, and cool To room temperature, until the precipitate is completely precipitated; filter, wash with deionized water until there is no impurity ions, and dry at 90°C for 24h; heat and calcinate, the heating rate is not more than 5°C / min, keep at 500°C for 3h, and then not more than 5°C / min cooling rate annealing, after cooling, placed in a high-energy ball mill, dry milling / wet milling to pulverize to obtain nano-WO3 powder; WO3 powder is placed in a tube furnace, and H2 / N2 mixed gas (H 2 : N 2 =1:9), reduce at 350°C for 1h, then pass in N2 gas, keep at 800°C for 1h, and anneal at a cooling rate of not more than 5°C / min to obtain nano-WO3-x powder;

[0078...

Embodiment 2

[0083] Example 2, same as Example 1, except that in the preparation of nano-ITO / Cr2O3 mixed powder, the heat-preservation condition of the heating and calcination stage is 1h at 1000°C, and the measured primary average particle size of the nano-particles is 40nm; the nano-slurry preparation is diluted The agent is toluene, the dispersant is polyether-modified trisiloxane, and the leveling agent is BYK306. The carrier is a light-curable acrylic resin composition, acrylate elastomer is 8%, and polyurethane acrylate is 40. %, 15% for trifunctional acrylate, 16% for aliphatic urethane acrylate, 10% for viscosity promoter, 5% for nano-silica-4HBAGE, 1% for functional additives, 5 for photoinitiator %; In the test method, it is coated on 3mm ordinary transparent glass by a wire rod coater, and after drying, the film is cured by UV light, and the film thickness is controlled to 3μm;

Embodiment 3

[0084] Example 3 is the same as Example 1, except that the diluent in the preparation of nano-slurry is a mixture of toluene and ethyl acetate (toluene: ethyl acetate = 1:1), and the dispersing agent is methoxy propyl acetate and methyl acetate. Acrylic acid mixture (propyl methoxyacetate: methacrylic acid=1:2), the leveling agent is BYK307;

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Abstract

The invention relates to a solvent type transparent nanometer thermal insulation sizing agent and an application method thereof. The sizing agent is prepared from 10-30% of a nanocrystalline metal oxide the grain diameter of which is 10-100nm, 0.1-5% of a dispersing agent, 0.1-5% of a flatting agent and a diluter, wherein the nanocrystalline metal oxide is the mixture of nanometer ATO and/or ITO,WO3-x and Cr2O3. The application method comprises the following step of: mixing and using the sizing agent and the diluter as well as a light curing acrylic resin composition, a solvent type polyurethane coating, an acrylate coating or an acrylic ester pressure-sensitive adhesive and a polyurethane pressure-sensitive adhesive. The solvent type transparent nanometer thermal insulation sizing agent and the application method provided by the invention have the advantages that the dispersion of the sizing agent is good, the storage time is long, the WO3-x can powerfully absorb sunlight, and the solar radiation can be effectively controlled while transmission of highly visible light is guaranteed; the Cr2O3 and the WO3-x are matched so as to effectively control generation of Cr (6+), so that the sizing agent is safe and non-toxic; the sizing agent can be used in match with the diluter as well as the light curing resin, the solvent type polyurethane coating and the pressure-sensitive adhesive after dispersion, and the sizing agent is simple and convenient; the sizing agent has high transparency, low haze and high heat-insulating properties and a strong weather-proof chemical-resistance property; the application method is simple, the production cost is low, and the sizing agent is suitable for large scale production.

Description

Technical field [0001] The invention relates to coating technology, in particular to a solvent-based transparent nano thermal insulation slurry and a method of use thereof. Background technique [0002] Ordinary glass does not have high selectivity to the solar spectrum, so while visible light is transmitted, the heat in the near-infrared region will also be transmitted in a large amount, causing the indoor temperature to rise, and increasing the burden on cooling equipment such as air conditioners. , Resulting in waste of energy. Therefore, exploring new environmentally friendly heat shielding materials has always been the goal pursued by researchers. These materials have high permeability to visible light and can effectively shield the near-infrared rays from sunlight. At present, the main transparent thermal insulation materials used are heat-reflective glass and low-emissivity glass. The former achieves high reflection of near-infrared to achieve the purpose, and the latter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/32C09D7/12
Inventor 徐杰王传广龙汉平
Owner 武汉羿阳科技有限公司
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