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High temperature-resistant and high-insulation sealing glass and preparation method thereof

A technology of sealing glass and high insulation, which is applied in the field of glass preparation, can solve the problems of not being able to meet the production requirements, not being used, not being achieved, etc., and achieve the effects of improving glass fluidity, improving chemical stability, and stabilizing the structure

Active Publication Date: 2016-07-20
XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most sealing glass materials cannot meet the main performance indicators required, such as high insulation, high temperature sealing, long-term stability and reliability, etc.
Traditional encapsulation methods include epoxy resin, silicone rubber, and different high-temperature adhesives for curing and sealing. Since these high-temperature adhesives are all organic materials, they cannot be used in high-temperature or high-pressure environments due to their own performance limitations, and they will age during use. behavior, resulting in package failure and therefore not meeting production requirements

Method used

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  • High temperature-resistant and high-insulation sealing glass and preparation method thereof
  • High temperature-resistant and high-insulation sealing glass and preparation method thereof
  • High temperature-resistant and high-insulation sealing glass and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0022] A method for preparing a high-temperature-resistant high-insulation sealing glass, the specific steps are as follows:

[0023] 1), get the raw material in molar percentage,

[0024]

[0025] 2), uniformly mix the raw materials selected in step 1) to form a batch, and then heat the batch at 200-300°C for 4 hours for pretreatment;

[0026] 3) Put the pretreated batch material into a platinum crucible, and then put the platinum crucible into a silicon-molybdenum high-temperature furnace to melt to obtain a clarified glass liquid. The melting process is as follows: from room temperature to 5-8°C / min Speed ​​up to 1400-1550°C, keep warm at 1400-1550°C for 30min-90min;

[0027] 4) Then pour the melted glass liquid into the mold to prepare samples according to the requirements, and cool naturally to obtain the required sealing glass.

[0028] Wherein, in step 2), the batch material is put into a high-temperature furnace and kept at 200-300° C. for 4 hours for pretreatment...

Embodiment 1

[0034] 1), mix the prepared glass raw materials according to the following mole percentages to form a batch, SiO 2 :BaO:CaO:TiO 2 : Bi 2 o 3 :Al 2 o 3 : ZrO 2 :As 2 o 5 : CeO 2 is 50:30:4:7:2:2:1:3:1,

[0035] 2), uniformly mix the raw materials selected in step 1) into a batch, and then put the batch into a high-temperature furnace and heat it at 200-300°C for 4 hours for pretreatment;

[0036] 3) Put the pretreated batch material into a platinum crucible, and then put the platinum crucible into a silicon-molybdenum high-temperature furnace to melt to obtain a clarified glass liquid. The specific melting process is: heating up from room temperature at a rate of 5-8°C / min to 1434°C, then keep at 1434°C for 60 minutes;

[0037] 4) Then pour the melted glass liquid into the mold to prepare samples according to the requirements, and cool naturally to obtain the required sealing glass.

[0038] Through testing, the obtained high-temperature-resistant and high-insulation...

Embodiment 2

[0041] 1), mix the prepared glass raw materials according to the following mole percentages to form a batch, SiO 2 :BaO:CaO:TiO 2 : Bi 2 o 3 :Al 2 o 3 : ZrO 2 :As 2 o 5 : CeO 2 is 53:27:7:4:3:3:1:2:1,

[0042] 2), uniformly mix the raw materials selected in step 1) into a batch, and then put the batch into a high-temperature furnace and heat it at 200-300°C for 4 hours for pretreatment;

[0043] 3) Put the pretreated batch material into a platinum crucible, and then put the platinum crucible into a silicon-molybdenum high-temperature furnace to melt to obtain a clarified glass liquid. The specific melting process is: heating up from room temperature at a rate of 5-8°C / min To 1464°C, hold at 1464°C for 60min;

[0044] 4) Then pour the melted glass liquid into the mold to prepare samples according to the requirements, and cool naturally to obtain the required sealing glass.

[0045] Through testing, the obtained high-temperature-resistant and high-insulation sealing g...

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Abstract

The invention discloses a preparation method of a high temperature-resistant and high-insulation sealing glass. The preparation method has the advantages that silicon dioxide is used as a skeleton structure; by adding BaO (barium oxide) as a generating body of glass, the melting temperature of the glass is lowered, the heat expansion coefficient of the glass is adjusted, and the fluidity of the glass is improved; by adding Al2O3 (aluminum oxide), an AlPO4 (aluminium phosphate) unit can be formed in the glass, and a straight chain is changed into a network structure, so that the structure of the glass is stable, and the chemical stability is improved; by adding ZrO2 (zirconium dioxide), the chemical stability of the glass is favorably improved; by replacing one part of BaO by other divalent metal oxides, such as CaO (calcium oxide), the melting temperature of the glass is lowered, the expansion coefficient of the glass is adjusted, and the chemical stability of the glass is improved; by adding TiO2 (titanium dioxide), the glass has high and low dielectric constants, and the electric insulation property of the glass is improved; by adding As2O5 (diarsenic pentoxide) into the formation of the glass structure, the separating from the network skeleton of the glass is avoided; the sealing temperature of the sealing glass is 1000 to 1050 DEG C, and the heat expansion coefficient is 70 to 100*10<-7> / DEG C; after sealing, the high temperature and high pressure resistant properties are good, and the insulation property is excellent.

Description

technical field [0001] The invention belongs to the technical field of glass preparation, and in particular relates to a high-temperature resistant high-insulation sealing glass and a preparation method thereof. Background technique [0002] With the rapid development of modern industrial production, a large number of functional devices such as thermocouples, thermal resistors, heating devices, and signal connectors are used to control and measure parameters such as temperature, pressure, and electromagnetic parameters. The technical requirements are getting higher and higher, requiring it to have the advantages of high reliability, high temperature resistance, high pressure resistance, oxidation resistance, corrosion resistance, high sealing, high insulation, etc., especially in harsh environments such as high temperature, high pressure, oil and gas exploitation, etc. field. At present, most sealing glass materials cannot meet the main performance indicators required, such...

Claims

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Application Information

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IPC IPC(8): C03C8/24
CPCC03C8/24
Inventor 任越锋冯庆赵红刚华斯嘉贾波黄晋
Owner XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
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