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Environmental-friendly black glaze for automotive glass and preparation method of black glaze

An automotive glass and environmental protection technology, which is applied in the field of black glaze for high-performance environmental protection automotive glass and its preparation, can solve the problem of high glass cost

Active Publication Date: 2012-08-22
JIANGXI SUNFLEX LIGHT RETROREFLECTIVE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Both the glass glaze components disclosed in patent WO 00 / 41977 and patent US 2006 / 0172876A1 contain rare earth oxides, so the glass cost is high

Method used

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  • Environmental-friendly black glaze for automotive glass and preparation method of black glaze
  • Environmental-friendly black glaze for automotive glass and preparation method of black glaze

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Embodiment Construction

[0022] The embodiments of the black glaze for high-performance environment-friendly automobile glass of the present invention are summarized in Table 1

[0023] Table 1: Concrete composition of each embodiment

[0024]

[0025] The black glazes of the above-mentioned embodiments can be used alone or mixed in a certain proportion.

[0026] Above-mentioned embodiment 1 and embodiment 2 are used for front windshield, and embodiment 3 and embodiment 4 are used for rear windshield. The black glaze produced by each of the above-mentioned embodiments satisfies after firing:

[0027] (1) The coefficient of thermal expansion is (85-95)×10 -7 / °C;

[0028] (2) Acid resistance meets the requirements: soak at 80°C 0.1NH 2 SO 4 More than or equal to 40 hours black glaze does not change color;

[0029] (3) Blackness value L<7;

[0030] (4) Shielding △L<1;

[0031] (5) The anti-adhesive performance of the black glaze on the rear windshield meets the requirements.

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Abstract

The invention relates to a high-performance environmental-friendly black glaze for automotive glass and a preparation method of the black glaze. The invention is characterized in that the high-performance environmental-friendly black glaze for the automotive glass comprises the following compositions in percentage by weight: 75-80% of bismuth series low-melting- point glass powder and 20-25% of inorganic black pigment. The bismuth series glass powder contains ZnO without rare-earth oxides; the grain size of the glass powder is 0.5-3 um; and the inorganic black pigment is iron-chromium-nickel-manganese black pigment or chromium-copper black pigment. The glass powder and the inorganic pigment are added to a V-shaped blender mixer to be mixed in proportion, so that the black glaze for the automotive glass is obtained. And then the black glaze is blended into slurry by organic carrier, and is coated at the edge of the automotive glass through screen printing. a black framework of the automotive glass is formed through the processes such as low-temperature drying, hard fire and the like. The blackness value L is less than 7, and the shielding property Delta L is less than 1.

Description

technical field [0001] The invention relates to a high-performance and environment-friendly black glaze for automobile glass and a preparation method thereof. Background technique [0002] Auto glass is printed with black glaze on the edges of the front and rear windshields of the car. After firing, the black edge of automobile glass is formed, which is used for beautiful decoration and anti-visible light and ultraviolet light. Avoid aging the adhesive and reducing the cohesive force. High-performance black glazes for automotive glass should meet the higher physical and chemical performance requirements of automobile manufacturers for black glazes, such as color, opacity, scratch resistance, abrasion resistance, bond strength, chemical stability, etc. [0003] Color is an important appearance attribute of black glaze, which has evolved into a global demand. The color of black glaze should be as black as possible (black value L<7.5). The color tone requires a blue colo...

Claims

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Application Information

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IPC IPC(8): C03C8/20C03C8/14C03C12/00
CPCC03C3/066C03C8/04
Inventor 方之耀朱亚娟王鑫
Owner JIANGXI SUNFLEX LIGHT RETROREFLECTIVE MATERIAL
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