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Preparation method of lead-free environment-friendly glass powder for gas-sensitive resistor

A gas-sensitive resistor and glass powder technology, which is applied in the field of preparation of ingredients for electronic components, can solve problems such as pollution and poisoning, and achieve the effect of reasonable setting of process parameters and uniform particles.

Inactive Publication Date: 2016-11-09
HUAIYUAN JINHAO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most glass powder preparation formulas now contain lead, which will cause great pollution and toxicity no matter in the preparation process, use process or final waste recycling process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0011] A method for preparing a lead-free environment-friendly glass powder for a gas-sensitive resistor, comprising 55% silicon dioxide, 20% zinc oxide, 10% zirconium dioxide, and 15% boron oxide by mass percentage, and the specific preparation steps are as follows:

[0012] (1) Preliminary crushing: Mix silicon dioxide, zinc oxide, zirconium dioxide and boric oxide, add pure water of the same quality, place in a stirring and grinding equipment for crushing and grinding for 1 hour, take it out and dry it in a vacuum oven for 20 minutes, the drying temperature is set to 140°C;

[0013] (2) Molten water quenching: Put the mixed powder processed in step (1) into a melting kiln for heating and melting, and set the melting temperature to 1300°C. After the mixed powder is completely melted, add pure water for water quenching , and then repeat the melting-water quenching process once more, then cool naturally;

[0014] (3) Grinding into powder: put the cooled mixture in step (2) in...

specific Embodiment 2

[0015] A method for preparing a lead-free environment-friendly glass powder for a gas-sensitive resistor, comprising 55% silicon dioxide, 20% zinc oxide, 10% zirconium dioxide, and 15% boron oxide by mass percentage, and the specific preparation steps are as follows:

[0016] (1) Preliminary crushing: Mix silicon dioxide, zinc oxide, zirconium dioxide and boric oxide, add pure water of equal quality, place in a stirring and grinding equipment for crushing and grinding for 2 hours, take it out and dry it in a vacuum oven for 25 minutes, the drying temperature is set to 160°C;

[0017] (2) Molten water quenching: put the mixed powder processed in step (1) into a melting kiln for heating and melting, and set the melting temperature at 1500°C. After the mixed powder is completely melted, add pure water for water quenching , then repeat the melting-water quenching process 3 times, then cool naturally;

[0018] (3) Grinding into powder: Put the cooled mixture in step (2) into a bal...

specific Embodiment 3

[0019] A method for preparing a lead-free environment-friendly glass powder for a gas-sensitive resistor, comprising 55% silicon dioxide, 20% zinc oxide, 10% zirconium dioxide, and 15% boron oxide by mass percentage, and the specific preparation steps are as follows:

[0020] (1) Preliminary crushing: Mix silicon dioxide, zinc oxide, zirconium dioxide and boron oxide, add pure water of equal quality, place in a stirring and grinding equipment for crushing and grinding for 1.5 hours, take it out and put it in a vacuum oven to dry for 23 minutes, the drying temperature is set to 150°C;

[0021] (2) Molten water quenching: put the mixed powder processed in step (1) into a melting kiln for heating and melting, and set the melting temperature at 1400°C. After the mixed powder is completely melted, add pure water for water quenching , and then repeat the melting-water quenching process 2 times, then cool naturally;

[0022] (3) Grinding into powder: Put the cooled mixture in step (...

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Abstract

The invention discloses a preparation method of lead-free environment-friendly glass powder for a gas-sensitive resistor. The preparation method concretely comprises the following steps: (1) preliminary crushing: silicon dioxide, zinc oxide, zirconium dioxide and boron oxide are mixed, pure water of the same mass is added, the materials are placed in a piece of stirring and grinding equipment for crushing and grinding, and the materials are placed in a vacuum baking oven for drying; (2) fusion and water quenching: mixed powder which is processed in the step (1) is placed in a fusion kiln for heating and melting, after the mixed powder is completely fused, pure water is added for carrying out water quenching, the fusion-water quenching process is repeated again, and natural cooling is carried out; (3) grinding and pulverizing: the mixed material which is cooled in the step (2) is placed in a piece of grinding equipment, pure water is added for grinding, the material is placed in a vacuum baking oven for drying, and dried powder is sieved by a vibrating screen in order to obtain glass powder. The method has beneficial effects that the formula is leadless, the preparation process after obtaining the glass powder does not cause severe toxic pollution, and the glass powder has uniform particles.

Description

technical field [0001] The invention relates to the technical field of preparation of ingredients for electronic components, in particular to a method for preparing a lead-free environment-friendly glass powder for a gas-sensitive resistor. Background technique [0002] Gas-sensitive resistors are made of certain semiconductors that absorb a certain gas and undergo redox reactions. The main components are metal oxides. The main varieties are: metal oxide gas-sensitive resistors, composite oxide gas-sensitive resistors, ceramic gas-sensitive resistors, etc. . [0003] During the preparation process of the gas sensitive resistor, glass powder needs to be configured. The glass powder can connect, tighten and fix the conductive phase particles during the preparation and sintering process, and make the entire film layer and the substrate firmly bond together. However, most glass powder preparation formulas now contain lead, which will cause great pollution and toxicity no matter...

Claims

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Application Information

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IPC IPC(8): C03C12/00
CPCC03C12/00
Inventor 姚坤姚望王传稳陈静高尚
Owner HUAIYUAN JINHAO ELECTRONICS TECH CO LTD
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