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

Silicon carbide porous ceramic material and preparation method of silicon carbide porous ceramic material

A technology of porous ceramics and silicon carbide, applied in the field of material science, can solve the problems of high energy consumption, complex components and processes, and achieve the effect of low energy consumption and high promotion value

Active Publication Date: 2015-12-30
SOUTHEAST UNIV
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a silicon carbide porous ceramic material and a preparation method thereof, so as to solve the problems of complex components and processes and large energy consumption in the existing methods

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
  • Silicon carbide porous ceramic material and preparation method of silicon carbide porous ceramic material
  • Silicon carbide porous ceramic material and preparation method of silicon carbide porous ceramic material
  • Silicon carbide porous ceramic material and preparation method of silicon carbide porous ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Specific steps are as follows:

[0033] 1) Mix the raw materials according to the ratio shown in Table 1, first mechanically stir, and then ball mill to prepare the slurry; the silicon carbide powder is green silicon carbide;

[0034] 2) dipping the above-mentioned slurry on the formwork to obtain a preform; the formwork adopts open polystyrene foam;

[0035] 3) Forming at low temperature according to the temperature shown in Table 1, and the heating time is 24 hours.

[0036] 4) Insulate at 160°C for 4 hours to cure completely.

[0037] Table 1 Proportion and molding temperature of silicon carbide porous ceramic slurry

[0038]

[0039] testing method:

[0040] The measurement of open porosity is to put the sample in water first, read the change of the reading in the measuring cylinder, which is the sum of the volume of the sample and the closed volume, then seal the opening of the sample with silicone grease, and place it in water. The change in the reading in ...

Embodiment 2

[0053] The difference between this embodiment and embodiment 1 is that water is added on the basis of embodiment 1.

[0054] Specific steps are as follows:

[0055] 1) Mix the raw materials according to the ratio shown in Table 5, first mechanically stir, and then ball mill to prepare the slurry; the silicon carbide powder is black silicon carbide;

[0056] 2) dipping the above-mentioned slurry on the formwork to obtain a preform; the formwork adopts open polyurethane foam;

[0057] 3) Forming at low temperature according to the temperature shown in Table 5, and the heating time is 36 hours.

[0058] 4) Insulate at 160°C for 4 hours to cure completely.

[0059] Table 5 Proportion and molding temperature of silicon carbide porous ceramic slurry

[0060]

[0061] Test Results:

[0062] Table 6 Test results of sample porosity and strength of water glass: silicon carbide: water = 10:3:1

[0063] Molding temperature

Open porosity

Flexural strength / MPa

...

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

No PUM Login to View More

Abstract

The invention discloses a silicon carbide porous ceramic material and a preparation method of the silicon carbide porous ceramic material. The preparation method comprises the following steps of firstly performing mechanical stirring on water glass, silicon carbide powder and water; then, performing ball milling to prepare slurry; next, immersing and hanging the slurry onto a template to obtain a pre-formed body; preserving the temperature for 24 to 36h at 40 to 100 DEG C; obtaining primarily solidified porous ceramics; finally, performing heating and heat preservation to obtain a finished product. The cost of the method is low; the prepared porous ceramic hole diameter and the porosity are controllable; the intensity is high; the chemical stability is high.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a porous ceramic material and a preparation method thereof. Background technique [0002] Porous ceramics are widely used in filtration, catalyst carrier, thermal materials, sound-absorbing materials, etc. [0003] The filtration characteristics of porous ceramics depend on the shape, size and distribution of pores, which are closely related to the process. [0004] Porous silicon carbide ceramics have excellent properties that other ceramics do not have, such as high thermal shock resistance, high specific strength, low thermal conductivity, oxidation resistance, wear resistance, and good chemical stability. [0005] The preparation of porous ceramics mainly includes adding pore-forming agent method, sol-gel method, template method, solid-state reaction sintering method and so on. [0006] Adding pore-forming agent method: For example, the invention patent...

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): C08L25/06C08L75/04C08K3/34C04B35/565C04B38/08
Inventor 刘玉付沈杰
Owner SOUTHEAST 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