Heat insulation film and heat insulation material

A technology of thermal insulation material and thermal insulation film, applied in synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve the problems of high cost, decline of infrared blocking rate, complicated manufacturing process, etc.

Inactive Publication Date: 2016-10-05
林宽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned membrane heat made of pure metals such as aluminum and silver or their alloys by evaporation and sputtering, because the evaporation and sputtering of metals or their alloys are not stable in the air and easy to oxidize, it will show its shortcomings. Silver or nickel-chromium alloy sputtered thermal insulation film, because expensive sputtering equipment is required, thus increasing the manufacturing cost of the thermal insulation film
In addition, the heat insulation film made of the above-mentioned metal coating is easy to produce the effect of blocking electromagnetic waves, resulting in poor reception of communication equipment in buildings and cars.
[0005] At present, if the thermal insulation film on the market needs to take into account the requirements of high transparency and high thermal insulation performance at the same time, tungsten oxide or composite tungsten oxide is often used. However, the prepared oxide particles Although it has sufficient ability to shield infrared rays, it can be used as an infrared-blocking material, but it needs to carry out two-stage heat treatment in the manufacturing process, so it has the disadvantages of complicated manufacturing process and high cost
In addition, the infrared blocking rate of the heat insulation film prepared by the above method will decline by 5-12% after 1000 hours of QUV aging test, which also shows the shortcomings of its reliability.

Method used

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  • Heat insulation film and heat insulation material
  • Heat insulation film and heat insulation material
  • Heat insulation film and heat insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Mix an appropriate amount of tungstic acid and hydrogen peroxide uniformly at an appropriate temperature of 30-50°C to form a melt, then use a platinum catalyst net to catalyze and decompose the residual hydrogen peroxide into oxygen and water for removal, and obtain solution A . Then tetrabutylammonium hydroxide was added to the ethanol solution and mixed to prepare 25% tetramethylammonium hydroxide-ethanol solution B. Solution A and solution B were co-precipitated to form a precipitate, and then the precipitate was aged for 12 hours, then heated and dried at 60°C to obtain carbon-doped WO 3 Prebody. Then, under the hydrogen atmosphere at 500°C, sintering at a heating rate of 2°C per minute for 1 hour, after the heat treatment is completed, a monoclinic composite tungsten oxycarbide powder is obtained, in which the doping amount of carbon is 0.82 atoms percentage.

[0099] Afterwards, after grinding the composite tungsten oxycarbide powder into a fine powder, add a ...

Embodiment 2

[0102] Dissolve 5.3g of tungsten hexachloride in 500ml of ethanol to make solution A, and mix 0.5g of cesium chloride with 100ml of ethanol to make solution B, then mix solution A and solution B to make solution C. Use 248nm KrF excimer laser on solution C to give pulse irradiation for 30 minutes at a fixed frequency of 8HZ and energy of 10mJ to obtain a composite tungsten oxycarbon chloride precursor, and then place the precursor in a hydrogen atmosphere at 500°C, with a heating rate of After sintering for 1 hour at 2°C for 1 minute, a composite tungsten oxycarbon chloride powder is obtained after the heat treatment is completed, wherein the doping amount of carbon is 0.63 atomic percent.

[0103] Afterwards, after grinding the composite tungsten oxycarbon chloride powder into a fine powder, it was added into a methyl ethyl ketone solvent to prepare a solution with a weight ratio of 27%, and a polymer dispersant with a weight ratio of 10% was added, using 100 μm yttrium oxide ...

Embodiment 3

[0106] This example is roughly the same as Example 1, except that the solution B is a 30% tetramethylammonium hydroxide-ethanol solution prepared by adding tetrabutylammonium hydroxide to an ethanol solution and mixing. The composite tungsten oxycarbide powder prepared in this example was tested, and it was found that the doping amount of carbon was 0.91 atomic percent. Further, the visible light transmittance (VLT%) and the infrared rejection rate (IR rejection%) of the transparent heat-insulating film with a wavelength of 300 to 2500 nm were measured, and the measurement results showed that VLT%=70%, and the IR rejection rate%=83% , 1000hr QUV test IR blocking rate% = 80%, so the IR blocking rate declines by about 3%.

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Abstract

The invention provides a thermal insulation film, which comprises a base material and a thermal insulation layer. The heat insulation layer is formed on the base material and is composed of a heat insulation material, wherein the heat insulation material includes a composite tungsten oxycarbide or a composite tungsten oxycarbide, the composite tungsten oxycarbide or the composite The tungsten oxycarbochloride has carbon doping, and the carbon doping content is less than or equal to 1 atomic percent.

Description

technical field [0001] The invention relates to a heat insulation film and a heat insulation material, in particular to a heat insulation film and a heat insulation material with excellent infrared blocking rate and visible light transmittance. Background technique [0002] In recent years, how to save energy and reduce carbon has become the subject of global efforts. Among them, the glass of buildings or cars can be effectively shielded from sunlight, and the temperature rise in the room or car can be reduced, thereby reducing the use of air conditioners. volume and load. [0003] The heat insulation layer contained in the general heat insulation film can be prepared by the following methods: (1) sputtering metal (such as silver or nickel-chromium alloy, etc.) or plating metal (such as aluminum, etc.) (2) will contain metal lanthanides (such as lanthanum hexaboride (LaB 6 ); or (3) will contain metal oxides (such as antimony tin oxide (ATO), indium tin oxide (ITO), tungst...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B17/06B32B7/12
Inventor 林宽
Owner 林宽
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