A kind of preparation method and application of high expansion coefficient copper sealing glass powder
A technology for sealing glass and high expansion, which is applied in the preparation of high expansion coefficient copper sealing glass powder and the preparation of glass powder required for copper electrical connector sealing, which can solve the problem of long production cycle, high environmental requirements, Solve the problems of high cost of copper-sealed electrical connectors, and achieve the effects of low cost, improved electrical performance, and good chemical stability
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Embodiment 1
[0016] Example 1: The percentage of moles P 2 0 5 55%, B 2 0 3 6%, Al 2 O 3 7.5%, Na 2 O15.5%, K 2 O16%, respectively use phosphorus pentoxide, boric acid, alumina, sodium carbonate, potassium carbonate to introduce the feed, the proportion of 400-500g materials are mixed uniformly into the dry 800ml alumina dry pot, the glass liquid is kept at 1200℃ for 2h Pour into cold water to quench the required glass, then put it in a 150℃ oven to dry for 3h, take it out and use an alumina ball mill jar with alcohol ball mill for 35min, take it out and put it in a 60℃ oven to dry for 12h, and add it after passing through a 200 mesh sieve The wax is granulated and passed through a 40-mesh sieve to obtain the required copper-sealed glass powder.
[0017] The obtained copper sealing glass has a dielectric constant of 7.4 (1000Hz, 20℃), and an expansion coefficient of 173×10 -7 / ℃(25~300℃), the transformation temperature is 388℃, the sealing temperature is 680℃, the sealing effect is good.
Embodiment 2
[0018] Example 2: The percentage of moles will be P 2 0 5 50%, B 2 0 3 5%, Al 2 O 3 15%, Na 2 O9%, K 2 O11% and PbO10% are respectively introduced with phosphorus pentoxide, alumina, boric acid, sodium carbonate, potassium carbonate, and lead oxide. The proportion of 400-450g is mixed and added to a dry 800ml alumina dry pot, and the temperature is kept at 1050℃. After 2h, pour the molten glass into cold water to quench the required glass, and then put it in a 150℃ oven to dry for 3h. After taking it out, use an alumina ball mill jar with alcohol ball mill for 30min, take it out and put it in a 60℃ oven to dry for 12h. After 200 mesh sieve, wax is added for granulation, and the required copper sealing glass powder is obtained through 40 mesh sieve.
[0019] The obtained copper sealing glass has a dielectric constant of 7.9 (1000Hz, 20℃), and an expansion coefficient of 175×10 -7 / ℃ (25~300℃), the transition temperature is 374℃, the sealing temperature is 650℃, and the sealing effe...
Embodiment 3
[0020] Example 3: The percentage of moles will be P 2 0 5 55%, B 2 0 3 6%, Al 2 O 3 10%, Na 2 O 10%, K 2 O16%, BaO 3% were added with phosphorus pentoxide, aluminum oxide, sodium carbonate borate, potassium carbonate, and barium carbonate respectively. The 400-450g material was mixed evenly and added to a dry 800ml alumina dry pot, and kept at 1150℃. After 2h, pour the molten glass into cold water to quench the required glass, and then put it in a 150℃ oven to dry for 3h. After taking it out, use an alumina ball mill jar with alcohol ball mill for 30min, take it out and put it in a 60℃ oven to dry for 12h. After 200 mesh sieve, wax is added for granulation, and the required copper sealing glass powder is obtained through 40 mesh sieve.
[0021] The obtained copper sealing glass has a dielectric constant of 7.23 (1000Hz, 20℃), and an expansion coefficient of 179×10 -7 / ℃(25~300℃), the transformation temperature is 372℃, the sealing temperature is 620℃, and the sealing effect is ...
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