Low melting point glass powder for barrier and preparation method thereof

A low-melting glass and barrier technology, which is applied in the field of low-melting glass powder for barrier and its preparation, can solve the problems of lead content and can not meet the requirements, and achieves the effects of strong competitiveness, suitable adjustment and easy thermal expansion coefficient.

Inactive Publication Date: 2011-04-13
郑庆云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this glass material is that it contains lead, which cannot meet the current requirements of lead-free development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. The raw material composition is by weight percentage:

[0051] Bi 2 o 3 44%, B 2 o 3 18%, BaO 13%, V 2 o 5 12%, P 2 o 5 4%, Na 2 O is 4%, MgO is 3%, SiO 2 1%, Al 2 o 3 1%.

[0052] 2. Preparation method:

[0053] (1) take each raw material according to the weight percentage of each component;

[0054] (2) Fully mix the raw materials taken;

[0055] (3) Put the mixed mixture into a crucible, then put it into an electric furnace with a furnace temperature of 1200 ° C, and keep it warm for 40 minutes;

[0056] (4) Pour the melted glass liquid into a tablet press and press it into thin slices;

[0057] (5) Put the flake glass after the tableting into a ball mill for ball milling;

[0058] (6) Sieve, test and pack the ball-milled glass powder.

[0059] 3. Test results:

[0060] Expansion coefficient: 82×10 -7 / °C (300°C) Sintering temperature: 535°C

[0061] Sintering time: 50min Particle size range: 0.1~10μm

[0062] Volume resistivity: >10 12 Ω·cm ...

Embodiment 2

[0064] 1. The raw material composition is by weight percentage:

[0065] Bi 2 o 3 34%, B 2 o 3 18%, BaO 8%, V 2 o 5 21%, P 2 o 5 4%, Na 2 O is 6%, MgO is 4%, SiO 2 2%, Al 2 o 3 3%.

[0066] 2. Preparation method:

[0067] With embodiment 1.

[0068] 3. Test results:

[0069] Expansion coefficient: 85×10 -7 / °C (300°C) Sintering temperature: 540°C

[0070] Sintering time: 50min Particle size range: 0.1~10μm

[0071] Volume resistivity: >10 12 Ω·cm Water resistance: good.

Embodiment 3

[0073] 1. The raw material composition is by weight percentage:

[0074] Bi 2 o 3 39%, B 2 o 3 18%, BaO 10%, V 2 o5 18%, P 2 o 5 5%, Na 2 O is 4%, MgO is 3%, SiO 2 2%, Al 2 o 3 1%.

[0075] 2. Preparation method:

[0076] With embodiment 1.

[0077] 3. Test results:

[0078] Expansion coefficient: 78×10 -7 / °C (300°C) Sintering temperature: 550°C

[0079] Sintering time: 50min Particle size range: 0.1~10μm

[0080] Volume resistivity: >10 12 Ω·cm Water resistance: good.

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Abstract

The invention discloses a low melting point glass powder for a barrier and a preparation method thereof. The glass powder comprises the following raw materials in percentage by weight: 30-50% of Bi2O3, 5-30% of B2O3, 5-30% of BaO, 5-30% of V2O5, 1-10% of P2O5, 1-10% of Na2O, 1-5% of MgO, 1-5% of SiO2 and 1-5% of Al2O3. The total percentage by weight of the Bi2O3, the V2O5 and the P2O5 is 45-75%. The total percentage by weight of the MgO, the SiO2 and the Al2O3 is 3-12%. The glass powder is prepared by the processes of weighing, mixing, founding, preforming, ball milling and sieving. The invention has the advantages of low softening temperature, no lead, excellent sealing air tightness and color diversification.

Description

【Technical field】 [0001] The invention relates to the field of glass materials, in particular to a low-melting-point glass powder for barrier ribs and a preparation method thereof. 【Background technique】 [0002] Since the appearance of the plasma display screen (PDP) in the 1960s, due to its wide application prospects, it has attracted great attention from governments and business groups around the world, and has become a new economic growth point in the 21st century, attracting and driving a large number of research units. and enterprise groups are engaged in the research and development of equipment, technology, processes and materials. A variety of lead-containing low-melting-point glass powders for PDP have appeared in the international market. With the improvement of environmental protection awareness, its development direction is lead-free, environmentally friendly, low-cost, high withstand voltage strength, and complete matching of expansion coefficients. PDP displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00
Inventor 李胜春邵春郑庆云武荣丽
Owner 郑庆云
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