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A dark yellow-gray glass composition

A glass composition, gray technology, applied in the field of float glass composition, can solve the problems of low transmission color shift, can not meet privacy protection and other problems, achieve low UV penetration, avoid damage to accessories and personnel, good energy saving and environmental protection Effect

Active Publication Date: 2021-08-06
FUYAO GLASS IND GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN200480007732.8 discloses a neutral gray glass composition with low transmittance color shift characteristics for automotive vision panels, the main colorant is 0.30-0.75% (by weight) of Fe2O3 (total iron), 0- With 15ppm of CoO and 1-15ppm of Se, the glass composition basically does not contain nickel. Based on the glass thickness of 3.9 mm, its visible light transmittance (Lta) is at least 65%, which obviously cannot meet the needs of privacy protection.

Method used

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  • A dark yellow-gray glass composition
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Embodiment

[0040] The present invention uses silica sand, soda ash, sodium nitrate, Glauber's salt, dolomite, limestone, iron powder, carbon powder, titanium dioxide, chromite, cerium powder, cobalt and selenium, etc. as raw materials to prepare the glass compositions of Examples 1-9 . The glass compositions of Examples 1-9 have approximately the same basic components (by weight percentage) as shown in Table 1.

[0041] Table 1: Basic components of the glass compositions of Examples 1-9

[0042]

[0043]

[0044] As shown in Table 2, the functional coloring components (by weight percentage) of the glass compositions of Examples 1 to 9 are respectively described in the following Table 2.

[0045] Table 2: Functional coloring components of the glass compositions of Examples 1-9

[0046] Total iron (%) redox ratio CeO 2 (%)

TiO 2 (%)

Cr 2 o 3 (PPM)

CoO(PPM) Se(PPM) Example 1 1.66 0.276 1.4510 1.34 300 200 20 Example 2 1.54 0.25...

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Abstract

The present invention relates to float glass compositions, particularly gray glass compositions, and specifically provides a dark yellow-gray glass composition whose functional coloring component comprises total iron Fe 2 O 3 , CeO 2 , Titanium dioxide TiO 2 , Cr2O3 2 O 3 , cobalt oxide CoO and selenium Se. A dark yellow-gray glass composition adopted in the present invention has a solar transmittance of less than 20%, an infrared transmittance of less than 25%, a visible light transmittance of less than 20%, and a transmittance of 1 Ultraviolet transmittance below %; while meeting the needs of privacy protection, it also has superior performance of blocking ultraviolet penetration and low solar transmittance, which can better prevent ultraviolet rays from affecting the interior of the car or indoor accessories. and personnel damage, and has good energy-saving and environmental protection effects.

Description

Technical field: [0001] The invention relates to a float glass composition, especially a gray glass composition, and specifically provides a dark yellow-gray glass composition with an ultraviolet transmittance (Tuv) less than or equal to 1%. Background technique: [0002] Gray glass is a kind of body tinted glass, which has the advantages of heat insulation, UV protection and privacy protection. It is often used as automotive glass, architectural glass and even aviation glass. When using gray glass, in addition to considering its optical properties, such as visible light transmittance, infrared transmittance and ultraviolet transmittance, etc., it is also necessary to consider its color tone and appearance, the composition of the glass itself, the selection of colorants and their proportions, etc. All aspects will affect the optical properties of the glass and the tint of the glass. [0003] Japanese patent JP3669019B2 discloses a kind of dark gray glass, the coloring compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/095C03C3/087C03C3/078C03C4/02C03C4/08
CPCC03C3/078C03C3/087C03C3/095C03C4/02C03C4/082C03C4/085
Inventor 何世猛关建光陈国树叶苏铨徐如斌林开福罗祥智
Owner FUYAO GLASS IND GROUP CO LTD
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