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

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
Comparison scheme
Effect test

Example Embodiment

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

[0023] 1), take the raw materials in mole percentage,

[0024]

[0025] 2). Mix the raw materials selected in step 1) uniformly into batches, and then heat the batches at 200-300°C for 4 hours for pretreatment;

[0026] 3) Put the pre-treated batch material into a platinum crucible, and then put the platinum crucible into a silicon-molybdenum high-temperature furnace to obtain a clear glass liquid. The melting process is specifically: 5~8℃ / min from room temperature Speed ​​up to 1400~1550℃, keep at 1400~1550℃ for 30min~90min;

[0027] 4). Then pour the molten glass into a mold according to requirements to prepare samples, and cool down to obtain the required sealing glass.

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

[0029] In the above step 1, the r...

Example Embodiment

[0033] Example 1:

[0034] 1). Mix the prepared glass raw materials into batches according to the following mole percentages, 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). Mix the raw materials selected in step 1) uniformly into batch materials, and then put the batch materials in a high-temperature furnace 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 obtain a clear glass liquid. The specific melting process is: heating from room temperature at a rate of 5-8℃ / min To 1434℃, then keep it at 1434℃ for 60min;

[0037] 4). Then pour the molten glass into a mold according to requirements to prepare samples, and cool down to obtain the required sealing glass.

[0038] Through testing, the obtained high temperature resistant and high insulation sealing glass has a sealing tem...

Example Embodiment

[0040] Example 2:

[0041] 1). Mix the prepared glass raw materials into batches according to the following mole percentages, 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). Mix the raw materials selected in step 1) uniformly into batch materials, and then put the batch materials in a high-temperature furnace 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 obtain a clear glass liquid. The specific melting process is: heating from room temperature at a rate of 5-8℃ / min To 1464℃, keep it at 1464℃ for 60min;

[0044] 4). Then pour the molten glass into a mold according to requirements to prepare samples, and cool down to obtain the required sealing glass.

[0045] Through testing, the obtained high temperature resistant and high insulation sealing glass has a sealing temperat...

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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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