A kind of sealing glass powder for electric connector and its preparation method and sealing process

A technology for sealing glass and electrical connectors, which is applied in connection, line/collector components, circuits, etc., can solve problems such as failure to meet performance requirements, decrease in product resistance, and poor product stability, so as to improve chemical stability and Effects of electrical insulation, lower melting temperature, and improved chemical stability

Active Publication Date: 2019-10-01
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, there are two main problems in the product developed in China: first, the pressure resistance is average, and the commonly used lifting method is mainly to implement a complicated sealing structure, which leads to complicated process, poor product stability and low yield; second, with the With the increase of pressure and temperature, the resistance of the product drops sharply, which cannot meet the performance requirements. The resistance of many products sealed with glass frit even drops to 0Ω under the conditions of 175°C and 140MPa, which has become the biggest bottleneck in the development of electrical connectors.

Method used

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  • A kind of sealing glass powder for electric connector and its preparation method and sealing process

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preparation example Construction

[0070] A preparation method of sealing glass powder for electrical connectors, specifically comprising the following steps:

[0071] 1), select raw material by following weight percentage:

[0072] K 2 O: 3%-7%

[0073] MgO: 1%-5%

[0074] CaO: 3%-7%

[0075] SrO: 0.5%-2%

[0076] BaO: 20%-30%

[0077] ZnO: 0.05%-1%

[0078] Fe 2 o 3 : 0.05%-1%

[0079] al 2 o 3 : 5%-15%

[0080] SiO 2 : 40%-60%

[0081] ZrO 2 : 0.5%-1.5%

[0082] TiO 2 : 0.05%-1%

[0083] V 2 o 5 : 1%-7%

[0084] Na 3 AlF 6 : 1%-3%;

[0085] 2), put the above ingredients in a ball mill for ball milling, so that the ingredients are mixed evenly, the grinding speed is 300r / min, and the time is 20-40min;

[0086] 3), then put the ball-milled and mixed materials in a corundum crucible or a platinum crucible, place the crucible in a silicon-molybdenum furnace, and raise the temperature from room temperature to 700-900°C at a rate of 10°C / min under air. After heat preservation at 700-900°C ...

Embodiment 1

[0100] A sealing glass powder for electrical connectors, prepared from the following raw materials in percent by weight: K 2 O is 3%, MgO is 2%, CaO is 4%, SrO is 0.5%, BaO is 26%, ZnO is 0.9%, Fe 2 o 3 0.05%, Al 2 o 3 15%, SiO 2 45%, ZrO 2 0.5%, TiO 2 0.05%, V 2 o 5 2%, Na 3 AlF 6 1%.

[0101] A preparation method of sealing glass powder for electrical connectors, specifically comprising the following steps:

[0102] 1), select raw material by following weight percentage:

[0103] K 2 O is 3%, MgO is 2%, CaO is 4%, SrO is 0.5%, BaO is 26%, ZnO is 0.9%, Fe 2 o 3 0.05%, Al 2 o 3 15%, SiO 2 45%, ZrO 2 0.5%, TiO 2 0.05%, V 2 o 5 2%, Na 3 AlF 6 1%.

[0104] 2) Put the raw materials of the above-mentioned components in a ball mill for ball milling, so that the ingredients are mixed evenly, the grinding speed is 300r / min, and the time is 20min;

[0105] 3) Put the ball-milled and mixed materials in step (2) in a corundum crucible or a platinum crucible, plac...

Embodiment 2

[0124] A sealing glass powder for electrical connectors, prepared from the following raw materials in percent by weight: K 2 O is 4.5%, MgO is 3.5%, CaO is 5.5%, SrO is 0.75%, BaO is 21.5%, ZnO is 0.75%, Fe 2 o 3 0.5%, Al 2 o 3 10%, SiO 2 44.5%, ZrO 2 1%, TiO 2 0.5%, V 2 o 5 4%, Na 3 AlF 6 3%.

[0125] A method for preparing a sealing glass for an electrical connector, specifically comprising the following steps:

[0126] 1), select raw material by following weight percentage: K 2 O is 4.5%, MgO is 3.5%, CaO is 5.5%, SrO is 0.75%, BaO is 21.5%, ZnO is 0.75%, Fe 2 o 3 0.5%, Al 2 o 3 10%, SiO 2 44.5%, ZrO 2 1%, TiO 2 0.5%, V 2 o 5 4%, Na 3 AlF 6 3%,

[0127] 2) Put the raw materials of the above-mentioned components in a ball mill for ball milling, so that the ingredients are mixed evenly, the grinding speed is 300r / min, and the time is 15min;

[0128] 3) Put the ball-milled and mixed materials in step (2) into a corundum crucible or a platinum crucible, ...

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Abstract

The invention discloses sealing glass powder for electric connectors. According to the sealing glass powder, silicon dioxide serves as a skeleton structure and serves as a network forming body of glass, and an extremely small amount of alkali metal element is used, so that the melting temperature is lowered, the coefficient of expansion is increased, and the influence on high-temperature insulating properties of the glass is relatively low; alkaline-earth metal oxides such as MgO, CaO, SrO and BaO are added, and network gaps are filled with cations, i.e., Mg<2+>, Ca<2+>, Sr<2+> and Ba<2+> of MgO, CaO, SrO and BaO and a mixed base effect and a depressing effect are generated, so that the movement of alkali metal ions is hindered, and thus the insulating properties of the glass is improved; due to relatively high content of BaO, the material properties of the glass can be improved, and the high-temperature insulating properties of the glass is greatly improved; due to the addition of Al2O3, an AlPO4 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 stabilized, and the chemical stability is improved; in addition, by adding oxides such as ZnO, TiO2, ZrO2 and V2O5, the improvement on the chemical stability and electrical insulating performance of the glass is facilitated.

Description

technical field [0001] The invention belongs to the field of sealing glass and its preparation, and in particular relates to a sealing glass powder for an electric connector, a preparation method and a sealing process thereof. Background technique [0002] Electrical connectors are tools used in oil well operations to provide electrical connections and signal transmission between systems. In order to obtain the information in the oil well, a system is required, in which the connector can provide data access, such as the access between the data acquisition module and the data communication module. This type of connector is mainly composed of three parts of metal shell, metal stem and insulating sealing material sealed at high temperature. The product is required to withstand liquid pressure from 140MPa to 172MPa, and the resistance is greater than 1500MΩ at 25°C at DC500V, 175°C (some even 204°C) ) at DC500, the resistance is greater than 50MΩ. At present, there are two mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C12/00C03C27/00C03C8/24H01R43/00H01R43/20
Inventor 华斯嘉冯庆梁力赵红刚任越锋贾波黄晋
Owner XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
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