Ultraviolet shielding type translucent thermal-insulation film preparation method

Abstract

The present invention discloses an ultraviolet shielding type translucent thermal-insulation film preparation method, and belongs to the technical field of composite materials. According to the present invention, a nanometer LaB6 ethanol dispersion liquid and a PET resin reagent are used to prepare the ultraviolet shielding type translucent thermal-insulation film according to a volume ratio of 21:9-14, wherein the nanometer LaB6 ethanol dispersion liquid comprises dehydrated alcohol and a dispersing agent according to a volume ratio of 125:1.5-2, and LaB6 and zirconia balls according to a mass ratio of 1:100, preferably the nanometer LaB6 ethanol dispersion liquid comprises dehydrated alcohol and a dispersing agent according to a volume ratio of 125:-2, and LaB6 and zirconia balls according to a mass ratio of 1:100, and the PET resin reagent comprises phenol, carbon tetrachloride and a PET film according to a mass ratio of 16:16:1; and the LaB6 nanoparticles and the PET film are mixed to prepare the transparent, thermal insulation and ultraviolet absorption film sheet or the transparent thermal insulation coating, the film can be used in the fields of building energy-saving glasses and vehicle glasses, and further the preparation method is simple.

Description

technical field [0001] The invention belongs to composite material technology, and more specifically relates to a preparation method of an ultraviolet shielding type light-transmitting heat-insulating film. Background technique [0002] With the development of national economy and modern science and technology, people pay more and more attention to energy saving and environmental protection. How to make rational use of sunlight is an important issue in energy saving and environmental protection. The windows of buildings and cars need to let the sunlight The part of the visible light passes through to ensure the lighting inside the car, but it is necessary to isolate the infrared part of the sunlight that can produce thermal effects, especially the near-infrared part (wavelength range of 0.8~2.5 qing) in which the thermal effect is the most significant in sunlight. , in order to play an energy-saving role, the conventional method to solve the sunscreen and heat insulation of...

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Problems solved by technology

[0002] With the development of national economy and modern science and technology, people pay more and more attention to energy saving and environmental protection. Important subject, the windows of buildings and cars need to let the visible part of the sunlight pass through to ensure the lighting inside the car, but also need to isolate the infrared part of the sunlight that can produce thermal effects, especially the thermal effect in sunlight The most significant near-infrared part (wavelength range is 0.8~2.5 qing), in order to save energy, the conventional method to solve the sun protection and heat insulation of glass mainly includes the use of heat reflective metal coating, heat absorbing heat insulation film, etc. "now on the market The metal coating used is mainly made of gold (Au) silver (Ag) copper (Cu) and other materials, 【2】 However, the plasma wavelength of these metal materials is in the ultraviolet region, and they are highly sensitive to visible light Reflection, so the transparency is poor and there is generally a problem of light pollution. Absorbent insulation materials such as indium tin oxide (ITO), antimony tin oxide (ATO), etc. can effectively block the infrared radiation in sunlight and in visible light The region has a high transmittance 172,731, but these insulation materials have poor insulation in the near-infrared region, and it is difficult to meet the requirements of making full use of sunlight, and the price of indium tin materials is very expensive, which greatly limits its application. scope

[0003] At present, coated glass, filmed glass, and low-emissivity glass (LOW-E glass) are widely used in my country, but it is reported that the coated glass with the best heat insulation effect, Its heat transfer is 39% of the solar energy, and its heat insulation is only 61%; its energy-saving effect has room for further improvement

These above-mentioned glasses also have the problem of low light transmittance. For example, because of containing metallic silver ions in LOW-E glass, cause its light transmittance to be low, only 63 ~ 68%; Most of the existing transparent glass coatings use Made of modified acrylic fluorosilicone resin and crosslinking agent, the light transmittance of glass treated with it is only 75%

At the same time, the existing glass coatings have low reflectivity and shielding rate to infrared rays, such as their reflectivity to infrared rays is only about 30%, and they are expensive, which restricts their wide application and popularization.

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