High-temperature and high-humidity resistant electrode silver paste for ZnO piezoresistor and preparation method for electrode silver paste

A varistor, high temperature resistant technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. Wet performance and other issues, to achieve the effect of improving electrical conductivity, superior structural compactness, and simple preparation process

Active Publication Date: 2016-07-20
SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the technical solution disclosed in the above patent, the particle size of the silver powder and glass powder used is relatively large, which will affect the high-

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature and high-humidity resistant electrode silver paste for ZnO piezoresistor and preparation method for electrode silver paste
  • High-temperature and high-humidity resistant electrode silver paste for ZnO piezoresistor and preparation method for electrode silver paste
  • High-temperature and high-humidity resistant electrode silver paste for ZnO piezoresistor and preparation method for electrode silver paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, a high temperature and high humidity resistant ZnO varistor electrode silver paste, the electrode silver paste includes the following components and weight percentages: metal silver powder 55%, glass powder 3%, organic carrier 29%, organic additives 3% and organic solvent 10%.

[0031] Among them, the metallic silver powder is spherical silver powder with a particle size of 0.95 μm and a tap density of 2.2 g / ml. The glass powder is lead-free glass powder, and the thermal expansion coefficient is 115×10 -7 / °C, the sintering temperature is 650°C, the glass powder includes the following components and weight percentages: Bi 2 O 3 79%, ZnO8%, B 2 O 3 7%, SiO 2 3%, Na 2 O2%, TiO 2 0.5% and Al2 O 3 0.5%.

[0032] The organic carrier is formed by mixing ethyl cellulose and terpineol, and the specific preparation method is as follows: according to the mass ratio of ethyl cellulose and terpineol being 1:4, adding ethyl cellulose into terpineol, heat...

Embodiment 2

[0041] In this embodiment, a high temperature and high humidity resistant ZnO varistor electrode silver paste, the electrode silver paste includes the following components and weight percentages: 80% of metal silver powder, 2% of glass powder, 16% of organic carrier, organic additive 1% and organic solvent 1%.

[0042] Among them, the metallic silver powder is spherical silver powder, the particle size is 1.2 μm, and the tap density is 2.5 g / ml. The glass powder is lead-free glass powder, and the thermal expansion coefficient is 110×10 -7 / °C, the sintering temperature is 550°C, the glass powder includes the following components and weight percentages: Bi 2 O 3 81%, ZnO6.5%, B 2 O 3 6.5%, SiO 2 2%, Na 2 O3%, TiO 2 0.5% and Al 2 O 3 0.5%.

[0043] The organic carrier is formed by mixing nitrocellulose and tripropylene glycol monomethyl ether, and the specific preparation method is as follows: according to the mass ratio of nitrocellulose and tripropylene glycol monome...

Embodiment 3

[0052] In this embodiment, a high temperature and high humidity resistant ZnO varistor electrode silver paste, the electrode silver paste includes the following components and weight percentages: metal silver powder 70%, glass powder 5%, organic carrier 18%, organic additives 2% and organic solvent 5%.

[0053] The metallic silver powder is spherical silver powder with a particle size of 1.5 μm and a tap density of 3.0 g / ml. The glass powder is lead-free glass powder, and the thermal expansion coefficient is 120×10 -7 / °C, the sintering temperature is 750°C, the glass powder includes the following components and weight percentages: Bi 2 O 3 79%, ZnO8%, B 2 O 3 7%, SiO 2 3%, Na 2 O2%, TiO 2 0.5% and Al 2 O 3 0.5%.

[0054] The organic carrier is formed by mixing ethyl cellulose, nitrocellulose, diethylene glycol butyl ether and dipropylene glycol monomethyl ether, and the specific preparation method is as follows: press ethyl cellulose, nitrocellulose, diethylene glyc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Tap densityaaaaaaaaaa
Thermal expansion coefficientaaaaaaaaaa
Login to view more

Abstract

The invention discloses high-temperature and high-humidity resistant electrode silver paste for a ZnO piezoresistor. The conductive silver paste comprises the following components in percentage by weight: 52-80% of metal silver powder, 2-5% of glass powder, 10-30% of organic carrier, 1-3% of organic additives and 1-10% of organic solvent; the preparation method for the electrode silver paste comprises the steps of uniformly mixing the organic carrier and the organic solvent to prepare a uniform colloidal solution; then adding the other components in sequence; and enabling the mixture to be mixed through a mixer, grinded through a three-roll mill, and the like to obtain the high-temperature and high-humidity resistant electrode silver paste for the ZnO piezoresistor. Compared with the prior art, the electrode silver paste for the ZnO piezoresistor prepared by the invention is high in adhesive force, high in circulation volume, high in voltage resistance, low in ohmic contact resistance, high in flatness, excellent in structural compactness, and excellent in high-temperature and high-humidity resistance.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to a high-temperature and high-humidity-resistant ZnO varistor electrode silver paste and a preparation method thereof. Background technique [0002] Varistor ceramic material refers to a semiconductor ceramic material that has nonlinear volt-ampere characteristics at a certain temperature and a certain voltage range, and its resistance decreases sharply with the increase of voltage. According to this nonlinear volt-ampere characteristic, nonlinear resistors, ie varistors, can be made of this semiconductor ceramic material. At present, varistors have a wide range of applications, such as fire extinguishing, overvoltage protection, lightning rod preparation, voltage standardization, and voltage stabilization. In recent years, due to the development of miniaturization and multi-functionality of electronic equipment, the integration speed and density of integrated circuits ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01B1/16H01B1/22H01B13/00
Inventor 朱庆明王德龙何利娜江海涵
Owner SHANGHAI BAOYIN ELECTRONICS MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap