Unlock instant, AI-driven research and patent intelligence for your innovation.

Lead-free high volume resistivity low temperature sealing glass

A technology for sealing glass and volume resistivity, applied in the field of sealing materials, can solve the problems of reducing the utilization rate of raw materials, easy to foam, pollute the production environment, etc., and achieve the effect of good chemical stability

Active Publication Date: 2020-06-09
CHANGCHUN UNIV OF SCI & TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing glass contains a large proportion of toxic V 2 o 5 ; The preparation method is easy to foam during the melting process, pollutes the production environment, and reduces the utilization rate of raw materials
Furthermore, the sealing temperature needs to be further reduced
[0007] All the above-mentioned prior arts belong to phosphate system glass, and the chemical stability is bound to be relatively poor, such as not being resistant to moisture, which reduces the sealing effect

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
  • Lead-free high volume resistivity low temperature sealing glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] According to the weight percentage distribution of 6 groups of lead-free high volume resistivity low-temperature sealing glass of the present invention given in the table below, 6 sealing glass samples were prepared to further illustrate the present invention.

[0017] Weigh each component according to the weight percentage distribution ratio of a group, pour it into a corundum crucible after mixing, then put it into a silicon carbide rod electric furnace and heat it at a temperature of 550-750°C for 0.5-1 hour, and cast the obtained glass liquid Shaped, annealed in an annealing furnace at a temperature of 100-200°C for 1 hour, and then cooled with the furnace to obtain a sealed glass sample.

[0018] Use expansion coefficient measuring instrument to measure the thermal expansion coefficient α (×10 of gained sealing glass sample) -7 / °C), transition temperature Tg (°C) and softening temperature Tf (°C), continue heating to make it liquefied, and when the flow radius of ...

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
sealing temperatureaaaaaaaaaa
softening pointaaaaaaaaaa
sealing temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to lead-free low-temperature sealing glass with high volume resistivity, and belongs to the technical field of sealing materials. The existing sealing glass has overhigh sealing temperature, and poorer insulation property. The lead-free low-temperature sealing glass is characterized by being prepared from the following components in percentage by weight: 20 to 40% of P2O5 (phosphorus pentoxide), 5 to 20% of B2O3 (boric oxide), 30 to 50% of SnF2 (tin fluoride), 5 to 20% of SnO (tin oxide), and 5 to 20% of TiO2 (titanium dioxide), wherein the sealing temperature is 280 to 400 DEG C, and the volume resistivity Rv is 780 to 910 megohm. The low-temperature sealing glass is applied into the manufacturing of instruments or electronic components in the fields of communication, measuring, transmission, display and the like.

Description

technical field [0001] The invention relates to a lead-free high volume resistivity low-temperature sealing glass, which is used in the manufacture of instruments and meters or electronic components used in the fields of communication, measurement, transmission, display, etc., and belongs to the sealing material technology field. Background technique [0002] Compared with organic sealing materials, sealing glass is durable and strong, and can withstand high temperatures in the use of sealed instruments or electronic components. At the same time, the same as the requirements for organic sealing materials, the sealing glass also needs to be non-toxic, insulating, and weather-resistant. As a glass material, in the process of sealing instruments or electronic components, the sealing temperature of sealing glass is higher than that of organic sealing materials. In order to avoid damage to the sealed instruments or electronic components, the sealing temperature should be control...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24C03C3/247
CPCC03C3/247C03C8/24
Inventor 郑涛吕景文胥馨祝佳祺
Owner CHANGCHUN UNIV OF SCI & TECH