Visible light super-transmissible coating material for Low-E glass and preparation method thereof

A coating material and visible light technology, applied in coatings, alkali metal silicate coatings, etc., can solve problems such as inability to meet architectural diversification, lighting decline, and difficulty in realizing coating diversification functions, and achieve processing equipment and operation Simple, functional effect

Active Publication Date: 2015-03-25
KUNSHAN CHUNYANG DOOR & WINDOW DECORATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current low-E glass has the following problems: (1) The radiation heat loss is reduced by sacrificing the transmission rate of part of the visible light, resulting in a decrease in lighting
Therefore, the price of low-E glass is generally high, and the domestic selling price range is usually 150-210 yuan / m according to different manufacturers, uses and coating properties. 2 ; (3) The function is single and cannot meet the diverse needs of modern buildings
At present, low-E glass can only achieve the purpose of reducing solar radiation, and most domestic manufacturers only use coatings to block sunlight to achieve building energy saving, which cannot meet the requirements of modern buildings, especially high-end buildings, on lighting, color, cleaning, Diverse and differentiated needs such as maintenance
Especially the low-E glass produced by the off-line vacuum sputtering method can have a variety of colors such as silver, silver gray and gold, but due to the poor stability of the coating coating, it is generally necessary to make hollow double-layer glass as soon as possible after the coating is completed. Therefore, it is difficult to realize the diversified functions of the coating; while the low-E glass produced by the online metal pyrolytic deposition method has high coating stability and long service life, but it is limited by the processing technology, and the color of the glass produced by this method is monotonous , currently on the market there is only one colorless and transparent

Method used

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  • Visible light super-transmissible coating material for Low-E glass and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Preparation of hydrophilic coating 1

[0026] The solution system ratio is: polyacrylic acid (number average molecular weight: 20000) 0.5wt.%, adjust the pH value to 9-10; sodium silicate 1.0wt.%, the solvent is deionized water, and the hybrid solution 1 is prepared.

[0027] Glass surface pretreatment: Cut 6mm thick float glass into a size of 50mm×50mm. The cut glass is surface treated through the following steps: washing with deionized water, washing with 95wt.% ethanol, washing with concentrated sulfuric acid to remove organic matter, washing with deionized water three times, and drying in vacuum for 24 hours.

[0028] Film coating-film formation-inorganic curing of the film: drop 0.2-0.5g of the hybrid solution on the pretreated glass surface, and spin the film at a speed of 1000-2000rpm. The glass coated with the hybrid solution was naturally volatilized in a dust-free clean container until dried, and then dried under vacuum for 24-36 hours. After d...

Embodiment 2

[0029] Embodiment 2: Preparation of hydrophilic coating 2

[0030] The ratio of the solution system is: acrylic acid-acrylamide copolymer (number average molecular weight 50000) 1.5wt.%, adjust the pH value to 9-10; water-soluble silicone oil 1.0wt.%, the solvent is deionized water, prepared as a hybrid Solution 2.

[0031] Glass surface pretreatment: with embodiment 1.

[0032]Film coating-film formation-inorganic curing of the film: drop 0.2-0.5g of the hybrid solution on the pretreated glass surface, and spin the film at a speed of 1000-2000rpm. Spray dilute hydrochloric acid with a concentration of 2-5wt.% on the surface of the glass coated with the hybrid solution, and the spraying amount is 0.1-0.2g, and then continue to spread evenly at a speed of 1000-2000rpm. The glass coated with the hybrid solution and dilute hydrochloric acid was naturally volatilized in a dust-free clean container until it dried, and after standing for 12 hours, the surface was cleaned with deio...

Embodiment 3

[0033] Embodiment 3: Preparation of hydrophilic coating 3

[0034] The ratio of the solution system is: sodium polyacrylate (number average molecular weight: 80,000) 1.5wt.%, adjust the pH value to 9-10; sodium silicate 2.0wt.%, solvent is deionized water, and the hybrid solution 3 is prepared.

[0035] Glass surface pretreatment: with embodiment 1.

[0036] Film coating-film formation-inorganic curing of the film: drop 0.2-0.5g of the hybrid solution on the pretreated glass surface, and spin the film at a speed of 1000-2000rpm. Spray dilute hydrochloric acid with a concentration of 2-5wt.% on the surface of the glass coated with the hybrid solution, and the spraying amount is 0.1-0.2g, and then continue to spread evenly at a speed of 1000-2000rpm. The glass coated with the hybrid solution and dilute hydrochloric acid was naturally volatilized in a dust-free clean container until it dried, and after standing for 12 hours, the surface was cleaned with deionized water for 5 tim...

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Abstract

The invention discloses a visible light super-transmissible coating material for Low-E (low-emission) glass and a preparation method thereof. The coating material is mainly composed of a solution system formed by an acrylic organic polymer and a silicon dioxide inorganic precursor. The solution system has a solid content of 1.5-3.5wt.%, wherein the acrylic organic polymer and the silicon dioxide inorganic precursor are in a mass ratio of 0.5-1.5:1. The coating material has a porous structure of 50-100nm pores, and refractive index of the coating material reaches 1/2th power of the product of the air refractive index and the glass refractive index, the diffraction reflectivity of medium-long wavelength infrared radiation reaches 76%-88%, and also visible light transmittance is increased and heat loss caused by long-wave radiation is inhibited. Also, the coating material is formed mainly by coating, film forming and inorganic curing of the film, high temperature and high vacuum coating conditions are unnecessary, the processing equipment and operation are simple, and diversification of architectural glass functions can be realized.

Description

technical field [0001] The invention relates to a coating material for low-emissivity glass and a preparation method thereof, in particular to a silicon dioxide film with nanopores used as a visible light ultra-transparent coating material for low-emission glass, which belongs to the energy-saving and heat-insulating coating for glass. Membrane material technology field. Background technique [0002] Low-E (low emission) glass, also known as low-emissivity glass, coats a layer of silver or other metal / metal oxide films on the surface of the glass to reduce the thermal effect of sunlight by reducing infrared radiation externally. The interior can reduce the overall heat loss due to radiation by improving the reflection of indoor long-wave radiation. Generally speaking, this type of glass has the effect of both heat preservation and heat insulation. The obvious advantage of Low-E glass is that the total long-wave radiation rate can be reduced from 84% of ordinary float glass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/02C09D1/00C09D133/02C09D133/12C09D133/08C09D4/02C09D4/06C03C17/00
Inventor 夏雪伟韩中扬
Owner KUNSHAN CHUNYANG DOOR & WINDOW DECORATION ENG
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