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Preparation and applications of high-resistivity gas-tightness high-expansion-coefficient aluminum alloy sealing glass powder

A high-resistivity, glass-sealing technology, applied to electrical components, circuits, connections, etc., can solve the problems of high environmental requirements, high sealing temperature, poor air tightness, etc., to avoid high-temperature oxidation of metals and improve breakdown strength High and reduce the effect of post-processing difficulty

Active Publication Date: 2018-06-15
LIAONING SILICATE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes the preparation and application of a high-resistivity, airtight, high-expansion coefficient aluminum alloy sealing glass powder, which uses a phosphorus-tin-bismuth glass system and adds elements such as stannous oxide, bismuth oxide, sodium, potassium, barium, and tungsten. Improve the internal structure of the glass, on the premise of ensuring that the expansion coefficient is compatible with the aluminum alloy, improve the airtightness and electrical insulation performance of the glass insulator, and reduce the glass sealing temperature, which solves the sealing temperature of the existing aluminum alloy electrical connector High, poor airtightness, easy aging, high technical problems such as high environmental requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Molar percentage P 2 0 5 36%, SnO 28%, Bi 2 o 3 17%, Zn0 2 5%, SiO 2 3%,Na 2 O 4%, K 2 O 2%, BaO 3%, WO 3 2%, use phosphorus pentoxide, stannous oxide, bismuth oxide, zinc oxide, silicon dioxide, sodium carbonate, potassium carbonate, barium carbonate, tungsten trioxide to introduce and feed respectively, mix 400-500g of materials and add to dry 1000mL In an alumina crucible, keep warm at 150°C for 10h, then pour the glass liquid into cold water for 2h at 1100°C to quench the required glass, then put it in an oven at 150°C to dry for 3h, take it out and add alcohol with a silica ball mill Ball mill for 25 minutes, take it out and put it in an oven at 100°C to dry for 12 hours, pass through a 200-mesh sieve, add wax to granulate, and pass through a 40-mesh sieve to obtain the required aluminum alloy sealing glass powder.

[0021] The resistivity of the obtained aluminum alloy sealing glass frit is 5.8×10 11 Ω·cm(200℃), expansion coefficient 19...

Embodiment 2

[0022] Embodiment 2: Molar percentage P 2 0 5 45%, SnO 21%, Bi 2 o 3 20%, Zn0 2 3%, SiO 2 1%,Na 2 O 2%, K 2 O 3%, BaO 2%, WO 3 3%, use phosphorus pentoxide, stannous oxide, bismuth oxide, zinc oxide, silicon dioxide, sodium carbonate, potassium carbonate, barium carbonate, tungsten trioxide to introduce and feed respectively, mix 400-500g of materials and add to dry 1000mL In an alumina crucible, keep warm at 150°C for 10 hours, then pour the glass liquid into cold water for 2 hours after holding at 1250°C to obtain the desired glass, then put it in an oven at 150°C to dry for 3 hours, and then add alcohol to it with a silica ball mill Ball mill for 25 minutes, take it out and put it in an oven at 100°C to dry for 12 hours, pass through a 200-mesh sieve, add wax to granulate, and pass through a 40-mesh sieve to obtain the required aluminum alloy sealing glass powder.

[0023] The resistivity of the obtained aluminum alloy sealing glass frit is 5.5×10 11 Ω·cm(200℃...

Embodiment 3

[0024] Embodiment 3: Molar percentage P 2 0 5 39%, SnO 22%, Bi 2 o 3 15%, Zn0 2 5%, SiO 2 3%,Na 2 O 3%, K 2 O 4%, BaO 5%, WO 3 4%, use phosphorus pentoxide, stannous oxide, bismuth oxide, zinc oxide, silicon dioxide, sodium carbonate, potassium carbonate, barium carbonate, tungsten trioxide to introduce and feed respectively, mix 400-500g of materials and add to dry 1000mL In an alumina crucible, keep warm at 150°C for 10 hours, then pour the glass liquid into cold water for 2 hours at 1000°C to quench the required glass, then put it in an oven at 150°C to dry for 3 hours, take it out and add alcohol with a silica ball mill Ball mill for 25 min, take it out and put it in an oven at 100°C to dry for 12 hours, pass through a 200-mesh sieve, add wax to granulate, pass through a 40-mesh sieve to obtain the required aluminum alloy sealing glass powder.

[0025] The resistivity of the obtained aluminum alloy sealing glass frit is 5.2×10 11 Ω·cm(200℃), expansion coeffic...

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Abstract

The invention relates to preparation of high-resistivity gas-tightness high-expansion-coefficient aluminum alloy sealing glass powder, wherein the preparation comprises raw material preparing, mixing,heating, drying, water quenching, drying, ball milling and other steps, and the raw materials comprise, by mole, 35-45% of P205, 15-28% of SnO, 15-27% of Bi2O3, 3-7% of ZnO2, 1-3% of SiO2, 2-4% of Na2O, 1-4% of K2O, 2-5% of BaO, and 2-4% of WO3. The application steps comprise: mixing the prepared alloy sealing glass powder and low temperature paraffin slice, heating, stirring, and screening to obtain the glass powder of desired particles; molding with a molding machine, heating, and carrying out thermal insulation to obtain a dewaxed glass billet; and removing oil stain from an aluminum alloyshell, carrying out dehydration, drying, assembling the sealed aluminum alloy shell and the glass billet, placing in a graphite mold, placing in an argon atmosphere furnace, carrying out thermal insulation, and cooling to a room temperature to obtain the electrical connector with advantages of aging resistance, high resistivity and high gas tightness. According to the present invention, the hightemperature oxidation of the metal during the sealing can be avoided, and the late-stage processing difficulty can be reduced.

Description

technical field [0001] The invention belongs to the field of glass sealing preparation, and in particular relates to a low-temperature sealing glass powder required for sealing an aluminum electrical connector, a preparation method and an application. Background technique [0002] Electrical connectors are an important part of electrical equipment and play an important role in component connection signal transmission. With the development of industry, automated electrical equipment has been widely used in different fields of production and life, especially with the continuous development of electronic technology in the aviation and aerospace fields, electronic equipment is becoming more sophisticated, complex and lightweight, and the application occasions and environments are becoming more and more diverse. The requirements for signal transmission capability and anti-electromagnetic interference capability of electrical connectors are also getting higher and higher. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00H01R43/00
CPCH01R43/005C03C12/00
Inventor 周亮杨殿来许壮志杨国庆李沐春
Owner LIAONING SILICATE RES INST
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