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

A manufacturing method and barrier layer technology, applied in the direction of chemical instruments and methods, glass/slag layered products, coatings, etc., can solve the problems of low chemical resistance, achieve high radio wave permeability, simplify manufacturing methods, mechanical Excellent durability and chemical resistance

Inactive Publication Date: 2008-04-02
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the chemical resistance of protective films containing alkali metals is low, there is a possibility that they cannot be applied to parts exposed to harsh external environments for a long time, such as automotive door glass panels or window glass panels.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] Hereinafter, examples of the present invention will be given for further description, but the present invention is not limited to these examples.

[0071] In addition, the average particle diameter of the ITO fine particles in the obtained infrared blocking layer was estimated by observation with a transmission electron microscope (TEM). In addition, the obtained glass plate with an infrared blocking layer was evaluated as follows.

[0072] [evaluate]

[0073] (1) Layer thickness: The cross-section of the fired infrared blocking layer was observed with a scanning electron microscope (manufactured by Hitachi: S-800), and the layer thickness of the first layer and the layer of the second layer were obtained from the obtained observation image. Thick [μm].

[0074] (2) In-layer composition: X-ray photoelectron spectroscopy (XPS) was used to measure the composition distribution (mass ratio in terms of oxides) of the infrared blocking layer after firing for In, Si, and Ti ...

example 1

[0082]Use a bead mill to disperse ITO microparticles with an average primary particle size of 45nm, a powder color of (x, y)=(0.353, 0.374) in the xy chromaticity coordinates of the c light source, and a 2° field of view, in a powder containing 0.02% by mass. The ITO microparticle dispersion liquid A containing 20 mass % of ITO was produced in the ethanol / 1-propanol mixed (volume ratio=50 / 50) solvent of concentrated nitric acid. The number-plane dispersion particle diameter of the ITO fine particles in the dispersion liquid A was measured using a laser zeta potential meter (manufactured by Otsuka Electronics Co., Ltd., ELS-8000), and it was 80 nm.

[0083] 2-Butanol was added to the said dispersion liquid A, and the dispersion liquid diluted so that the solid content concentration might become 7 mass % was made into the dispersion liquid B.

[0084] The resulting dispersion B was coated on a 3.5 mm thick ultraviolet-absorbing green glass plate (Tv: 75%, Te: 47%, T1 = 22%, T2 =...

example 2

[0089] Further, 2.2 g of diisopropoxybis(acetylacetonate)titanium diisopropoxide (manufactured by Mitsubishi Gas Chemical Co., Ltd., trade name: TAA) was mixed with 100 g of the dispersion B, and stirred for 1 hour to obtain a dispersion C. In the production of the lower layer, a glass plate with an infrared blocking layer was produced in the same manner as in Example 1, except that the above-mentioned dispersion liquid C was used instead of the dispersion liquid B. Table 1 and Table 2 show the property evaluation results of the obtained glass plate with an infrared blocking layer.

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Abstract

A glass plate with infrared shielding layer that excels in visible light and radiowave transmissions, exhibiting low infrared transmittance, and that is applicable to regions requiring mechanical durability, such as automobile window glass; and a process for producing the same. There is provided a glass plate with infrared shielding layer characterized by having a glass substrate and, superimposed on a surface thereof, an infrared shielding layer composed of contiguously arranged first layer and second layer (first layer arranged on the side of glass substrate) wherein the first layer is a 0.2 to 2 [mu]m thick layer having ITO microparticles of = 100 nm average primary particle diameter bound to each other by means of a metal oxide matrix containing silicon oxide and titanium oxide while the second layer is a 0.02 to 0.3 [mu]m thick metal oxide layer containing silicon oxide and titanium oxide.

Description

technical field [0001] The present invention relates to a glass plate provided with an infrared blocking layer and a method for its manufacture. Background technique [0002] In recent years, in order to block the infrared rays entering the car or building through vehicle glass or building glass, reduce the temperature rise in the car or building, and the load of air-conditioning equipment, infrared blocking film glass (for example, Patent Document 1). In addition, glass for vehicles or glass for buildings is often required to have a high visible light transmittance in order to ensure safety and visibility. [0003] So far, many methods of adding infrared blocking performance to a glass plate to improve heat ray blocking performance have been proposed. For example, it has been proposed and put into practical use to add infrared-blocking performance to the glass plate itself by adding infrared-absorbing ions to the glass, or to add infrared-blocking performance by forming a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34B32B9/00B32B17/06C09D183/00C09D185/00
CPCC03C2218/113C03C17/3417C03C2217/475C03C2217/212C03C2217/45C03C2217/476C03C17/007C03C2217/23C03C2217/213Y10T428/265
Inventor 朝長浩之小平広和砂原一夫
Owner AGC INC
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