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

Preparation method for Al2O3 ceramic material having controllable bimodal porous structure

A porous structure and ceramic material technology, applied in ceramic products, applications, household appliances, etc., can solve the problems that do not involve the controllability of porous alumina porosity and pore structure, and achieve easy large-scale industrial production and raw materials The effect of low cost and simple preparation process

Inactive Publication Date: 2012-10-24
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all prepare alumina with bimodal pore distribution through the sacrificial template method, but do not involve the porosity and pore structure controllability of the porous alumina

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
  • Preparation method for Al2O3 ceramic material having controllable bimodal porous structure
  • Preparation method for Al2O3 ceramic material having controllable bimodal porous structure
  • Preparation method for Al2O3 ceramic material having controllable bimodal porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A controllable bimodal porous structure Al 2 o 3 A ceramic material, the volume ratio of aluminum oxide in the material: spherical starch: fibrous carbon fiber is 4:1:1, and the preparation process includes the following steps:

[0036] In the first step, two pore formers of different shapes and different materials and alumina powder are passed through the following formula:

[0037] m 1 ρ 1 + m 2 ρ 2 = P × ( m 1 ρ 1 + m 2 ρ 2 + m 3 ...

Embodiment 2

[0045] A controllable bimodal porous structure Al 2 o 3 Ceramic material, the volume ratio of alumina:spherical starch:fibrous carbon fiber in the material is 14:3:3, and the preparation process is consistent with that of Example 1.

Embodiment 3

[0047] A controllable bimodal porous structure Al 2 o 3 Ceramic material, the volume ratio of alumina:spherical starch:fibrous carbon fiber in the material is 3:1:1, and the preparation process is consistent with that of Example 1.

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
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method for an Al2O3 ceramic material having a controllable bimodal porous structure. According to the preparation method, a mass ratio of one pore forming agent to the other pore forming agent to alumina powder in original mixing powder is calculated according to designed volumes of the pore forming agents, and the materials are weighed, wherein the two pore forming agents have different shapes and different materials; the original mixing powder is subjected to ball mill by using a medium ethanol; and steps of drying, screening, molding and sintering are performed to obtain a porous alumina ceramic material. According to the present invention, the pore forming agents with different contents and different shapes are adopted to design and regulate so as to prepare the bimodal porous alumina ceramic material with different porosities and different pore structures, wherein the pore size of large pores can be controlled to a nano-micron scale, the pore size of small pores can be controlled to a nano-scale, the pore structure of the large pores is fibrous, and the pore structure of the small pores is spherical or flat; in addition, the raw material cost is low, the preparation process is simple, and the prepared product can provide a series of materials meeting different requirements for applications in fields of electrodes, artificial bones, catalysts, bioreactors, adsorbents, and the like.

Description

technical field [0001] The invention relates to a method for preparing a porous structure ceramic material, in particular to a controllable bimodal porous structure Al 2 o 3 Preparation method of ceramic material. Background technique [0002] Porous ceramics have excellent filtration, adsorption and desorption properties, high temperature resistance, oxidation resistance, thermal shock resistance and chemical corrosion resistance, which has become one of the hotspots in the current research on porous materials. Its high specific surface area, low density, fluid permeability, high specific strength, low dielectric constant and high thermal shock resistance provide valuable reference for many researchers. In recent years, porous ceramic materials have been widely used in ion and heat exchangers, catalysis, sensors, separation and purification of biomolecules, and refractory linings, filters for molten metal, and biomedical materials. The closed porous material is mainly us...

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): C04B38/06C04B35/10C04B35/622
Inventor 陈畅田东平王宇斌何廷树伍勇华
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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