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Bismuthate lead-free sealing glass material with low melting point and preparation method thereof

A glass material with low melting point technology, applied in the field of bismuth salt low melting point lead-free sealing glass material and its preparation, can solve the problems of high sealing temperature, achieve low sealing temperature, overcome easy crystallization, and good fluidity Effect

Inactive Publication Date: 2009-12-16
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this system glass is that the sealing temperature is relatively high, which can only be sealed at a temperature above 500°C.

Method used

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  • Bismuthate lead-free sealing glass material with low melting point and preparation method thereof
  • Bismuthate lead-free sealing glass material with low melting point and preparation method thereof
  • Bismuthate lead-free sealing glass material with low melting point and preparation method thereof

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Embodiment Construction

[0027] Bismuth salt low-melting-point lead-free sealing glass material and preparation method thereof of the present invention include essential oxide component Bi 2 o 3 , B 2 o 3 , ZnO, Sb 2 o 3 And adjust the oxide composition BaO, SrO, CuO and TeO 2 , and its mass percentages are: 71-91% Bi 2 o 3 , 5-25% B 2 o 3 , 2-20% ZnO, 0.5-5% Sb 2 o 3 , 0~3% BaO, 0~3% SrO, 0~3% CuO and 0~3% TeO 2 .

[0028] The present invention will be further described in detail below in conjunction with specific embodiments.

[0029] Examples 1-18 are specific examples of preparing the bismuthate low melting point lead-free sealing glass material of the present invention. Each embodiment weighs a total of 100 g of raw materials according to the mass percentage content of each component. The usage of each raw material is shown in Table 1 and Table 2. Examples 1-18 prepare the bismuth salt low melting point lead-free sealing glass material of the present invention. The raw materials use...

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Abstract

The invention discloses a bismuthate lead-free sealing glass material with low melting point and a preparation method thereof, and belongs to the technical field of electronic materials. The bismuthate lead-free sealing glass material with the low melting point comprises the following main components in percentage by mass: 71 to 91 percent of Bi2O3, 5 to 25 percent of B2O3, 2 to 20 percent of ZnO and 0.5 to 5 percent of Sb2O3. The preparation method for the material comprises the following steps: weighing the components in percentage by mass as raw materials, and mixing the raw materials evenly; putting the evenly-mixed raw materials into a crucible; preserving the heat for 0.5 to 1 hour at the temperature of between 200 and 300 DEG C; continuously heating the raw materials to between 1,000 and 1,200 DEG C at the heating rate of 10 DEG C per minute; covering a crucible cover on the crucible to prevent bismuth trioxide from volatilizing; preserving the heat for 0.5 to 2 hours, and melting glass liquid; and taking the well melted glass liquid out, and water-quenching, drying, ball-milling and sieving the glass liquid to obtain bismuthate lead-free sealing glass powder with low melting point. The material has the advantages that the material can be used for long-time stable sealing operation at relatively low temperature, and the sealing process does not crystallize and has good liquidity.

Description

technical field [0001] The invention relates to a bismuthate low-melting-point lead-free sealing glass material and a preparation method thereof, belonging to the technical field of electronic materials. Background technique [0002] In recent years, flat display technologies such as vacuum fluorescent display (VFD) and plasma display (PDP) have developed rapidly, and the development of vacuum sealing materials is one of the key technologies. At present, PbO-B is mainly used in the field of low-temperature sealing glass in China. 2 o 3 -SiO 2 , PbO-ZnO-B 2 o 3 and other systems. Leaded glass has a series of well-known advantages, such as low dielectric loss, low softening temperature, good chemical stability, and wide sealing temperature. However, with the gradual enhancement of people's awareness of environmental protection, the toxicity of lead to humans and the pollution of the environment have attracted more and more attention from all aspects. From the perspective...

Claims

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Application Information

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IPC IPC(8): C03C8/24C03C3/14
Inventor 华有杰徐时清赵士龙王焕平邓德刚鞠海东李晨霞
Owner CHINA JILIANG UNIV
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