Heat-ray-absorbing glass plate and method for producing same

A heat absorption and glass plate technology, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problems of low sunlight transmittance, low light transmittance, high sunlight transmittance, etc., and achieve high visible light Effect of transmittance, low solar transmittance

Inactive Publication Date: 2016-12-14
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

) is high, the solar light transmittance is low, so it is easy to increase the value of Tv / Te, but at the same time, the visible light transmittance will also be low
The lower the total iron content, the higher the visible light transmittance, but the higher the solar light transmittance, and the lower the Tv / Te value

Method used

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  • Heat-ray-absorbing glass plate and method for producing same
  • Heat-ray-absorbing glass plate and method for producing same
  • Heat-ray-absorbing glass plate and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0108] The following examples will be given to describe the present invention in detail, but the present invention is not limited to these examples.

[0109] (Fe-redox)

[0110] For the obtained glass plate, Fe-redox was calculated from the spectrum curve of the glass measured with a spectrophotometer.

[0111] (Tv)

[0112] About the obtained glass plate, the visible light transmittance (Tv) (A light source, the value under the measurement conditions of 2 degree visual field) prescribed|regulated by JISR3106 was computed by the 4 mm thickness conversion value.

[0113] (Te)

[0114] About the obtained glass plate, the solar light transmittance (Te) prescribed|regulated by JISR3106 was computed by 4 mm thickness conversion value.

[0115] (Dw)

[0116] About the obtained glass plate, the dominant wavelength (Dw) of the transmitted light prescribed|regulated by JIS Z8701 (1982) was computed by 4 mm thickness conversion value.

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Abstract

Provided is a heat-ray-absorbing glass plate which simultaneously provides high visible-light transmittance and low solar transmittance, and also suppresses the development of an amber color. This heat-ray-absorbing glass plate is one containing iron, tin and sulfur, wherein when displayed as mass percentages on an oxide basis, MgO is 4.5% or less, total tin content is less than 0.4% when calculated as SnO2, and the ratio (SnO2/SO3) of total tin content to total sulfur content expressed in terms of SO3 is 0.2-100.

Description

technical field [0001] The present invention relates to a heat ray absorbing glass plate and a method of manufacturing the same. Background technique [0002] A heat-absorbing glass plate is required to have a low solar light transmittance and a high visible light transmittance. That is, the solar light transmittance specified in JISR 3106 (1998) (hereinafter also referred to as Te. This application is calculated as a value converted to a thickness of 4 mm.) and the visible light transmittance specified in JISR 3106 (1998) (A light source, 2-degree field of view ) (Hereafter also denoted as Tv. In this application, it is calculated as a converted value of 4mm thickness.) The ratio Tv / Te is a high value. [0003] Usually, it is expressed as a mass percentage based on oxides, if converted to Fe 2 o 3 The total amount of iron (hereinafter, in order to distinguish from trivalent iron, also recorded as t-Fe 2 o 3 . ) is high, the solar light transmittance is low, so it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/02C03C3/087
CPCC03C3/087C03C4/02C03C3/095C03C4/082C03B19/02C03C2204/00
Inventor 嶋田勇也荒井雄介近藤裕己
Owner ASAHI GLASS CO LTD
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