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Lead-free sealing glass and preparation method thereof

A technology of glass and lead sealing, which is applied in the field of lead-free sealing glass and its preparation, can solve problems such as poor pressure resistance, and achieve the effects of improving pressure resistance, improving chemical stability, and high chemical stability

Inactive Publication Date: 2015-10-07
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a lead-free sealing glass and its preparation method, which is used to solve the problem of poor pressure resistance when the lead-free sealing glass is used in the field of high-voltage electronics

Method used

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preparation example Construction

[0022] The present invention also provides a method for preparing lead-free sealing glass. In terms of mass fraction, 30%-60% SiO 2 , 10%-30% BaO, 1%-5% Na 2 O, 1%-10% K 2 O, 2%-10% V 2 O 5 ,

[0023] 5%-10% CaO, 1%-5% Al 2 O 3 , 0-5% of B 2 O 3 , 1%-3% Fe 2 O 3 , 0-5% of alkaline earth metal oxides are fully mixed and then melted and cooled to obtain the lead-free sealing glass.

[0024] The specific implementation includes the following steps:

[0025] First, in terms of mass fraction, 30%-60% SiO 2 , 10%-30% BaO, 1%-5% Na 2 O, 1%-10% K 2 O, 2%-10% V 2 O 5 , 5%-10% CaO, 1%-5% Al 2 O 3 , 0-5% of B 2 O 3 , 1%-3% Fe 2 O 3 , 0-5% of alkaline earth metal oxides are fully mixed to make a mixture;

[0026] Then melt the mixture at a temperature of 1450°C-1600°C for 8-15 hours to obtain a molten liquid of the mixture;

[0027] Finally, the molten liquid of the obtained mixture is cooled and solidified to obtain a lead-free sealing glass.

[0028] In the above step of melting the mixture at a t...

Embodiment 1

[0034] The lead-free sealing glass provided in this embodiment includes SiO 2 , BaO, Na 2 O, K 2 O, V 2 O 5 , CaO, Al 2 O 3 , B 2 O 3 , Fe 2 O 3 , SrO, MgO; Among them, in terms of mass fraction, SiO in lead-free sealing glass 2 The mass fraction of BaO is 50.9%, the mass fraction of BaO is 21.6%, Na 2 The mass fraction of O is 3.5%, K 2 The mass fraction of O is 3.2%, V 2 O 5 The mass fraction of CaO is 4%, the mass fraction of CaO is 8.1%, and the mass fraction of Al 2 O 3 The mass fraction is 2.5%, B 2 O 3 The mass fraction of 2.8%, Fe 2 O 3 The mass fraction of SrO is 1.4%, the mass fraction of SrO is 1.2%, and the mass fraction of MgO is 0.8%.

[0035] The preparation method of the lead-free sealing glass includes the following steps:

[0036] Step 1: Weigh SiO separately 2 , BaO, Na 2 O, K 2 O, V 2 O 5 , CaO, Al 2 O 3 , B 2 O 3 , Fe 2 O 3 , SrO, MgO, among them, in terms of mass fraction, SiO 2 The mass fraction of BaO is 50.9%, the mass fraction of BaO is 21.6%, Na 2 The mass ...

Embodiment 2

[0041] The lead-free sealing glass provided in this embodiment includes SiO 2 , BaO, Na 2 O, K 2 O, V 2 O 5 , CaO, Al 2 O 3 , B 2 O 3 , Fe 2 O 3 , SrO, MgO; among them, in terms of mass fraction, SiO in lead-free sealing glass 2 The mass fraction of BaO is 45%, the mass fraction of BaO is 26.2%, Na 2 The mass fraction of O is 1.3%, K 2 The mass fraction of O is 5.8%, V 2 O 5 The mass fraction of CaO is 7.2%, the mass fraction of CaO is 6%, and the mass fraction of Al 2 O 3 The mass fraction is 1.5%, B 2 O 3 The mass fraction of 2%, Fe 2 O 3 The mass fraction of SrO is 1.8%, the mass fraction of SrO is 2.1%, and the mass fraction of MgO is 1.1%.

[0042] The preparation method of the lead-free sealing glass includes the following steps:

[0043] Step 1: Weigh SiO separately 2 , BaO, Na 2 O, K 2 O, V 2 O 5 , CaO, Al 2 O 3 , B 2 O 3 , Fe 2 O 3 , SrO, MgO, among them, in terms of mass fraction, SiO 2 The mass fraction of BaO is 45%, the mass fraction of BaO is 26.2%, Na 2 The mass fracti...

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Abstract

The invention discloses lead-free sealing glass and a preparation method thereof, relates to the technical field of sealing glass, and aims at solving the problem of poor pressure resistance when the lead-free sealing glass is applied in the field of high-voltage electronics. The lead-free sealing glass comprises the following components in percent by weight: 30-60 percent of SiO2, 10-30 percent of BaO, 1-5 percent of Na2O, 1-10 percent of K2O, 2-10 percent of V2O5, 5-10 percent of CaO, 1-5 percent of Al2O3, 0-5 percent of B2O3, 1-3 percent of Fe2O3 and 0-5 percent of alkaline-earth metal oxide. The lead-free sealing glass is used for sealing metals, nonmetals or ceramics.

Description

Technical field [0001] The invention relates to the technical field of sealing glass, in particular to a lead-free sealing glass and a preparation method thereof. Background technique [0002] Sealing glass is a common material used to seal metals, non-metals, or ceramics. At present, the platinum group sealing glass used in the electronics field can seal metals, non-metals, or ceramics together. A type of platinum group sealing glass T k-100 The point is too low and the insulation is poor, resulting in poor high-voltage resistance, which cannot meet the needs of the high-voltage electronic field. Moreover, it contains heavy metal lead, which will affect human health and the environment. [0003] For this reason, people consider the use of lead-free sealing glass in the field of high-voltage electronics, but the field of high-voltage electronics has certain requirements for the pressure resistance of sealed products. At present, the common lead-free sealing glass has poor pressure ...

Claims

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Application Information

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IPC IPC(8): C03C8/24
CPCC03C3/064C03C3/091C03C8/24C03C8/02
Inventor 卢克军秦国斌
Owner BOE TECH GRP CO LTD
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