Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of degradable low-temperature co-fired ceramics and its preparation method

A technology of low temperature co-fired ceramics and ceramics, applied in the field of electronic engineering applications, can solve problems such as environmental pollution

Active Publication Date: 2021-06-11
SOUTHWEST JIAOTONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of environmental pollution in the recycling of waste electronic equipment. By providing a degradable low-temperature co-fired ceramic material and its preparation method, the waste electronic components can be degraded by themselves in the water environment, and precious metals can be extracted safely and environmentally friendly. In order to avoid the environmental pollution caused by the traditional strong acid and strong alkali corrosion process

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
  • A kind of degradable low-temperature co-fired ceramics and its preparation method
  • A kind of degradable low-temperature co-fired ceramics and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] Such as figure 1 Shown, a kind of preparation method of above-mentioned degradable low-temperature co-fired ceramics, comprises the following steps:

[0026] S1, with SiO 2 , SiO 2 ·nH 2 O, H 3 BO 3 , B 2 o 3 , NaOH, KOH, Ba(OH) 2 ·8H 2 O, Al(OH) 3 , MgO, CaO, SrO, ZnO and rare earth oxides as raw materials, according to the composition of ceramics, weigh each raw material separately, and add distilled water according to the water-solid ratio of 3 to 5:1 to make a mixture, and set aside;

[0027] S2. Using a ball mill to mill the water-solid mixture in step S1, the milling time is 5 to 7 hours;

[0028] S3. After the treatment in step S2, the ceramic suspension slurry is separated, and dried at a temperature of 80-100° C. to a constant weight for 24-36 hours to obtain a dry sample;

[0029] S4, taking out the dry sample and crushing and grinding to obtain a powdery material with a particle size of 2-50 μm;

[0030] S5, placing the powdery material in a cruc...

Embodiment 1

[0034] A method for preparing the above-mentioned degradable low-temperature co-fired ceramics, comprising the following steps:

[0035] S1, with SiO 2 、H 3 BO 3 , Al(OH) 3 as raw material, according to xB 2 o 3 ·ySiO 2 · zAl 2 o 3 In wMO, x=23%, y=64%, z=13%, w=0% ratio, weigh each raw material separately, and add distilled water according to the water-solid ratio of 3-5:1 to make a mixture, set aside ;

[0036] S2. Use a ball mill to mill the water-solid mixture in step S1, and the milling time is 6 hours;

[0037] S3. After the treatment in step S2, the ceramic suspension slurry is separated, and dried at a temperature of 90° C. to a constant weight for 30 hours to obtain a dry sample;

[0038] S4, taking out the dry sample and crushing and grinding to obtain a powdery material with a particle size of 2-50 μm;

[0039] S5, placing the powdery material in a crucible, and calcining at a temperature of 300° C. for 5 hours to obtain a pre-calcined sample;

[0040] S6,...

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 diameteraaaaaaaaaa
diameteraaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a degradable low-temperature co-fired ceramic, which is a ceramic material mainly composed of borosilicate inorganic polymer molecular structure, and its composition chemical formula is xB 2 o 3 ·ySiO 2 · zAl 2 o 3 ·wMO, where MO is MgO, CaO, SrO, BaO, Na 2 O, Al 2 o 3 、K 2 At least one of O, ZnO or rare earth element oxides, x, y, z, w are mass percentages, 20wt%≤x≤65%, 15%≤y≤65%, 0%≤z≤30%, 0 %≤w≤30%. The preparation method of the ceramic is based on SiO 2 , SiO 2 ·nH 2 O, H 3 BO 3 , B 2 o 3 , NaOH, KOH, Ba(OH) 2 ·8H 2 O, Al(OH) 3 , MgO, CaO, SrO, ZnO and rare earth oxides as raw materials, through ball milling, drying, grinding, calcination, granulation, molding and sintering process steps. The degradable ceramic can not only be co-fired with electrode materials such as silver, copper and gold, but also can be co-fired with low-melting-point metal electrodes such as aluminum. Based on its unique borosilicate-rich inorganic polymeric structure as the hydrolysis trigger phase, through the control of the chemical composition of the ceramic and the design of the dispersion distribution of the hydrolysis trigger phase in the structure, the ceramic can degrade itself in humid conditions, water and salt solutions.

Description

technical field [0001] The invention belongs to the field of electronic engineering application and material technology, and in particular relates to a degradable low-temperature co-fired ceramic and a preparation method thereof. Background technique [0002] The development of low-temperature cofired ceramics (Low-temperature cofired ceramics, LTCC) technology has supported the development of circuit integrated packaging and component integration technology, and has become the development direction of passive integration and passive devices, as well as the development of supercomputer technology and national defense information technology. The construction provides important basic conditions, and it has attracted wide attention at home and abroad. In addition to requiring ceramic materials to have specific physical properties, LTCC technology is notable for the fact that the sintering temperature of ceramics must be lower than the melting point of the co-fired metal electro...

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): C04B35/14C04B35/622
CPCC04B35/14C04B35/622C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3213C04B2235/3217C04B2235/3224C04B2235/3284C04B2235/3409
Inventor 陈松孙大明黎文徐博韩雪玲王航
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com