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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, single variety of heat-insulating particles, and unqualified surface treatment of heat-insulating particles, and achieve improved weather resistance and chemical resistance, which is beneficial to Large-scale production, the effect of suppressing the production of Cr6+

Inactive Publication Date: 2015-07-08
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 fully and effectively control the solar spectrum radiation in the wavelength of 800-2500nm; 4. Poor weather resistance, 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-insulation particles

[0077] 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 ranges from 1 to 3, slowly heat up to 80°C, keep warm for 1 hour, and cool to room temperature , until the precipitate is completely precipitated; filter, wash with deionized water until there are no impurity ions, and dry at 90°C for 24 hours; heat and calcinate at a rate of no more than 5°C / min, keep it at 500°C for 3 hours, and then heat it at a rate of no more than 5°C / min Annealing at a cooling rate, cooled and then placed in a high-energy ball mill for dry or wet grinding to obtain nano-WO 3 Powder; WO 3 The powder is placed in a tube furnace and fed with H 2 / N 2 Mixed gas (H 2 :N 2 =1:9), reduced at 350°C for 1h, and then passed N 2 Gas, heat at 800°C for 1h, anneal at a cooling rate of no more than 5°C / min to obtain nan...

Embodiment 2

[0083] Embodiment 2, is identical with embodiment 1, and difference is to prepare nano-ITO / Cr 2 o 3 In the mixed powder, the heat preservation condition in the heating and calcination stage is 1000°C for 1 hour, and the measured average particle size of the nanoparticles is 40nm; the diluent in the preparation of the nano-slurry is toluene, and the dispersant is polyether-modified trisiloxane. The agent is German BYK chemical BYK306; in the method of use, the carrier is a photocurable acrylic resin composition, acrylate elastomer is 8%, polyurethane acrylate is 40%, trifunctional group acrylate is 15%, and aliphatic polyurethane acrylate is 16%, viscosity accelerator is 10%, nano-silica-4HBAGE is 5%, functional additive is 1%, photoinitiator is 5%; in the test method, it is coated on 3mm ordinary transparent glass by wire bar coater Above, after drying and forming a film, UV light curing, the film thickness is controlled to 3 μm;

Embodiment 3

[0084] Embodiment 3 is the same as Example 1, except that the diluent is a mixture of toluene and ethyl acetate (toluene: ethyl acetate=1:1) in the nano slurry preparation, and the dispersant is methoxypropyl acetate and formaldehyde Acrylic acid mixture (methoxypropyl acetate: methacrylic acid = 1:2), leveling agent BYK chemical 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-type transparent nano heat-insulating slurry and its application method. Background technique [0002] Ordinary glass does not have a high transmittance selectivity to the solar spectrum, so while visible light transmits, a large amount of heat in the near-infrared region also transmits, causing the indoor temperature to rise and increasing the burden on cooling equipment such as air conditioners , resulting in a waste of energy. Therefore, exploring new environmentally friendly heat-shielding materials has always been the goal pursued by researchers. These materials have high transmittance to visible light and can effectively shield near-infrared rays in sunlight. At present, the main transparent heat insulation materials used are heat reflective glass and low-emissivity glass. The former realizes high reflection of near-infrared to achieve the purpose, and the latter achieves he...

Claims

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Application Information

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Patent Type & Authority Patents(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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