Preparation method and application of high expansion coefficient copper sealing glass powder

A technology for sealing glass and high expansion, which is applied to the preparation of high-expansion coefficient copper sealing glass powder and the preparation of glass powder required for the sealing of copper electrical connectors, and can solve the problem of high cost and use of copper-sealed electrical connectors. High environmental requirements, long production cycle and other problems, to achieve the effect of good chemical stability, low cost, and improved electrical performance

Active Publication Date: 2014-06-25
LIAONING SILICATE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to solve the above problems, adopt phosphate glass system, add sodium, potassium, lead, barium and other elements, improve the internal structure of the glass, and improve the airtightness of the glass insulator under the premise of ensuring that the expansion coefficient matches the copper alloy and electrical insulation performance, which solves the technical problems of high cost, long production cycle and high environmental requirements of the existing copper-sealed electrical connectors

Method used

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  • Preparation method and application of high expansion coefficient copper sealing glass powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Molar percentage P 2 0 5 55%, B 2 0 3 6%, Al 2 o 3 7.5%,Na 2 O15.5%, K 2 O16%, use phosphorus pentoxide, boric acid, aluminum oxide, sodium carbonate, and potassium carbonate to introduce the feed respectively, mix the ingredients 400-500g evenly and add them to a dry 800ml alumina dry pot, heat the glass liquid at 1200°C for 2 hours Pour into cold water to quench the desired glass, then put it in a 150°C oven to dry for 3 hours, take it out and use an alumina ball mill jar to add alcohol to ball mill for 35 minutes, take it out and put it in a 60°C oven to dry for 12 hours, pass through a 200-mesh sieve and add The wax is granulated, and the required copper sealing glass powder is obtained by passing through a 40-mesh sieve.

[0017] The dielectric constant of the obtained copper-sealed glass is 7.4 (1000Hz, 20°C), and the expansion coefficient is 173×10 -7 / °C (25~300°C), the transition temperature is 388°C, the sealing temperature is 680°C, and ...

Embodiment 2

[0018] Embodiment 2: P by molar percentage 2 0 5 50%, B 2 0 3 5%, Al 2 o 3 15%,Na 2 O9%,K 2 O11%, PbO10% respectively use phosphorus pentoxide, aluminum oxide, boric acid, sodium carbonate, potassium carbonate, lead oxide to introduce and feed, mix 400-450g of materials evenly, add them to a dry 800ml alumina dry pot, and keep warm at 1050°C After 2 hours, pour the molten glass into cold water to obtain the desired glass, then put it in an oven at 150°C and dry it for 3 hours, take it out and use an alumina ball mill jar to add alcohol for ball milling for 30 minutes, take it out and put it in an oven at 60°C to dry for 12 hours, After 200-mesh sieve, add wax to granulate, pass through 40-mesh sieve to obtain the required copper sealing glass powder.

[0019] The dielectric constant of the obtained copper-sealed glass is 7.9 (1000Hz, 20°C), and the expansion coefficient is 175×10 -7 / °C (25~300°C), the transition temperature is 374°C, the sealing temperature is 650°C, ...

Embodiment 3

[0020] Embodiment 3: P by molar percentage 2 0 5 55%, B 2 0 3 6%, Al 2 o 3 10%,Na 2 O 10%, K 2 O16% and BaO 3% are introduced and fed with phosphorus pentoxide, aluminum oxide, boric acid sodium carbonate, potassium carbonate, and barium carbonate respectively, and the proportion of 400-450g is mixed evenly and added to a dry 800ml alumina dry pot, and kept at 1150°C After 2 hours, pour the molten glass into cold water to obtain the desired glass, then put it in an oven at 150°C and dry it for 3 hours, take it out and use an alumina ball mill jar to add alcohol for ball milling for 30 minutes, take it out and put it in an oven at 60°C to dry for 12 hours, After 200-mesh sieve, add wax to granulate, pass through 40-mesh sieve to obtain the required copper sealing glass powder.

[0021] The resulting copper-sealed glass has a dielectric constant of 7.23 (1000Hz, 20°C) and an expansion coefficient of 179×10 -7 / ° C (25 ~ 300 ° C), the transition temperature is 372 ° C...

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Abstract

The invention relates to a preparation method and an application of high expansion coefficient copper sealing glass powder, wherein the technical difficult problems of high cost, long production period, high use environment requirements and the like of the existing copper seal electrical connector are solved. The high expansion coefficient copper sealing glass powder adopts a phosphate glass system and comprises the following components by mole: 45-65% of P205, 10-15% of B203, 4-15% of Al2O3, 5-20% of Na2O, 8-22% of K2O, and 0-12% of PbO+BaO+CaO+MgO. The application comprises: carrying out mixing, heating, stirring, molding, drying and other steps on the glass powder and a paraffin thin sheet, assembling a sealing copper shell and a glass billet, placing on a graphite mold, placing into a nitrogen atmosphere furnace or vacuum furnace, carrying out thermal insulation for 30 min at a temperature of 600-780 DEG C, and cooling to a room temperature to obtain the electrical connector with characteristics of high temperature resistance, high resistivity and high air-tightness. According to the present invention, the glass powder can match to the copper alloy shell expansion coefficient, the produced copper alloy electrical connector can achieve good electrical property, the preparation method is suitable for industrial production, and the economic benefits can be increased.

Description

technical field [0001] The invention relates to a preparation method and application of a high expansion coefficient copper sealing glass powder, in particular to a preparation method and application of glass powder required for copper electrical connector sealing, and belongs to the technical field of glass sealing preparation. Background technique [0002] With the continuous development of electronic technology in the fields of industrial control, medical equipment, detection and measurement equipment, radio and television communications, aerospace and other fields, electronic equipment is becoming more sophisticated, complex and multi-functional, and the application occasions and environments are becoming more and more diverse. Under today's demand, the requirements for signal transmission capability and anti-electromagnetic interference capability of electronic components are also getting higher and higher. Therefore, the electrical connectors made of kovar alloy and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00H01R13/52
Inventor 杨殿来韩绍娟许壮志薛健张明周亮
Owner LIAONING SILICATE RES INST
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