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Infrared shielding film-coated glass plate and process for its production

A technology of infrared shielding and glass plate, applied in coatings, optical filters, etc., can solve the problems of uneconomical and infrared shielding loss, and achieve the effects of reduced dosage, high radio wave transmittance, and low infrared transmittance

Inactive Publication Date: 2007-10-10
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the ITO electrical conductor is an oxygen-deficient semiconductor, and if it is kept at least 300°C in the presence of oxygen, free electrons will be lost due to oxidation, resulting in a loss of infrared shielding properties
Therefore, in order to obtain a coating film with excellent mechanical durability while maintaining infrared shielding properties, it is necessary to perform heat treatment in a non-oxidizing atmosphere, which is very disadvantageous in terms of cost, or must The surface of the permanent coating film is further coated with an ITO anti-oxidation layer, or a large amount of expensive fine ITO particles must be incorporated into the coating film, which is very uneconomical

Method used

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  • Infrared shielding film-coated glass plate and process for its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Weigh 0.71 gram of xylene dispersion A (wherein 30 mass % of average primary particle diameters are dispersed with cubic fine ITO microparticles (Fuji Titanium Industry Co., Ltd. production) of 40 nm) and 2.15 grams of xylene solution B (wherein Containing 20% ​​by mass of perhydropolysilazane (number average molecular weight: 1,000, trade name Aquamica NP-110, manufactured by AZ Electronic Materials)), they were mixed at room temperature and stirred for 10 minutes to prepare coating liquid C.

[0074] The prepared coating solution C is coated on the surface cleaned ultraviolet-absorbing green glass (Tv: 73%, Te: 45%, the transmittance to the light of wavelength 2.0 microns: 47%, long 10 cm, 10 cm wide, 5 mm thick, common name UVFL, produced by Asahi Glass Company, Limited), dried in ambient air at 100°C for 10 minutes, and then cured in an oven at 210°C for 30 minutes to prepare a coating with Glass plate with infrared shielding film. The properties of the prepared gl...

Embodiment 2

[0077] Take by weighing 0.71 gram of xylene dispersion liquid D (wherein the average primary particle diameter that is dispersed with 30 mass % is the hexagonal fine ITO particle (Fuji Titanium Industry, Co., Ltd. produces) of 29 nanometers) and 2.15 gram of above-mentioned solution B, they Mix at room temperature and stir for 10 minutes to prepare coating liquid E.

[0078] A glass plate coated with an infrared shielding film was prepared in the same manner as in Example 1, except that the coating solution E above was used instead of the coating solution C. Table 1 lists the evaluation results of the prepared glass plate coated with the infrared shielding film.

Embodiment 3

[0080] Weigh 0.48 g of the above-mentioned dispersion liquid A, 1.51 g of the above-mentioned solution B and 0.99 g of diisopropoxybis(ethyl acetoacetate)titanium, mix them at room temperature, and stir for 10 minutes to prepare the coating liquid F.

[0081] A glass plate coated with an infrared shielding film was prepared in the same manner as in Example 1, except that the above-mentioned coating liquid F was used instead of coating liquid C, and the film thickness of the infrared shielding film after curing changed as shown in Table 1 . The property evaluation results of the prepared glass plate coated with the infrared shielding film are listed in Table 1.

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Abstract

An infrared shielding film-coated glass plate comprising a glass substrate (10) and an infrared shielding film (20) formed thereon, wherein the infrared shielding film comprises fine ITO particles having an average primary particle diameter of at most 100 nm dispersed in a matrix containing silicon oxide as the main component and containing nitrogen in an amount of at least 2 at% based on Si and has a film thickness of from 200 to 3,000 nm.

Description

technical field [0001] The invention relates to a glass plate coated with an infrared shielding film and a manufacturing method thereof. Background technique [0002] In recent years, people have used glass coated with an infrared shielding film to shield infrared rays that pass through vehicle glass or building glass and enter the vehicle or building to reduce the temperature rise in the vehicle or building, or to reduce the load on the air conditioner (such as JP-A-10-279329). Also, in many cases, glass used for vehicles or buildings is required to have high transmittance of visible light for safety or visibility. [0003] So far, many attempts have been made to impart infrared shielding properties to glass plates in order to improve heat shielding performance. For example, it has been proposed to combine infrared absorbing ions in the glass to make the glass plate itself have infrared shielding properties, or to form a conductive film on the surface of the glass substra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C03C17/25C03C17/30C03C4/08C03C4/00
CPCC03C17/007C03C2217/45C03C2217/475C03C2217/476C03C2218/11C03C4/00G02B5/20
Inventor 小平广和朝长浩之砂原一夫山本雄一小林大介
Owner ASAHI GLASS CO LTD
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