Environmentally-friendly lead-free low-temperature glass powder used for barrier of PDP (plasma display panel), and preparation method thereof

An environmentally friendly, glass powder technology, applied in the field of glass materials, can solve the problems of lead-containing and unsatisfactory, and achieve the effect of wide application range, wide performance adjustment range, and meeting individual needs

Inactive Publication Date: 2011-09-21
李胜春
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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

[0041] 1. The raw material composition is by weight percentage:

[0042] Bi 2 o 3 44%, B 2 o 3 18%, MgO 13%, V 2 o 5 12%, P 2 o 5 4%, K 2 O is 4%, CaO is 3%, SiO 2 1%, Al 2 o 3 1%.

[0043] 2. Preparation method:

[0044] (1) take each raw material according to the weight percentage of each component;

[0045] (2) Fully mix the raw materials taken;

[0046] (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;

[0047] (4) Pour the melted glass liquid into a tablet press and press it into thin slices;

[0048] (5) Put the flake glass after the tableting into a ball mill for ball milling;

[0049] (6) Sieve, test and pack the ball-milled glass powder.

[0050] 3. Test results:

[0051] Expansion coefficient: 82×10 -7 / °C (300°C) Sintering temperature: 535°C

[0052] Sintering time: 50min Particle size range: 0.1~10μm

[0053] Volume resistivity: >10 12 Ω·cm W...

Embodiment 2

[0055] 1. The raw material composition is by weight percentage:

[0056] Bi 2 o 3 34%, B 2 o 3 18%, MgO is 8%, V 2 o 5 21%, P 2 o 5 4%, K 2 O is 6%, CaO is 4%, SiO 2 2%, Al 2 o 3 3%.

[0057] Two, preparation method: with embodiment one.

[0058] 3. Test results:

[0059] Expansion coefficient: 85×10 -7 / °C (300°C) Sintering temperature: 540°C

[0060] Sintering time: 50min Particle size range: 0.1~10μm

[0061] Volume resistivity: >10 12 Ω·cm Water resistance: good

Embodiment 3

[0063] 1. The raw material composition is by weight percentage:

[0064] Bi 2 o 3 39%, B 2 o 3 18%, MgO 10%, V 2 o 5 18%, P 2 o 5 5%, K 2 O is 4%, CaO is 3%, SiO 2 2%, Al 2 o 3 1%.

[0065] Two, preparation method: with embodiment one.

[0066] 3. Test results:

[0067] Expansion coefficient: 78×10 -7 / °C (300°C) Sintering temperature: 550°C

[0068] Sintering time: 50min Particle size range: 0.1~10μm

[0069] Volume resistivity: >10 12 Ω·cm Water resistance: good

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Abstract

The invention discloses an environmentally-friendly lead-free glass powder used for a barrier of a PDP (plasma display panel), and a preparation method thereof. The glass powder is composed of the following raw materials in percentage by weight: 30-50% Bi2O3, 5-30% of B2O3, 5-30% of MgO, 5-30% of V2O5, 1-10% of P2O5, 1-10% of K2O, 1-5% CaO, 1-5% of SiO2 and 1-5% of Al2O3, wherein the total percentage of Bi2O3, V2O5 and P2O5 is 45-75% by weight and the total percentage of CaO, SiO2 and Al2O3 is 3-12% by weight. The preparation method comprises the following processes: weighing, mixing raw materials, melting, tabletting, ball-milling and screening. The glass powder has the advantages of low softening temperature, no lead, high sealing airtightness and diverse colors.

Description

【Technical field】 [0001] The invention relates to the field of glass materials, in particular to an environment-friendly lead-free low-temperature PDP barrier glass powder 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. At present, major multinational companies such as Corning, Asahi Glass, Denki Glass, and Daejoo all regard lead-free glass powder for PDP as the dominant direction of glass powder for PDP display screens in the future. Due to the important role of lead-free glass powder for PDP on PDP display screens, electronic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00
Inventor 李胜春武荣丽刘立起
Owner 李胜春
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