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

Method for producing micro-structure controllable porous ceramic with agglutinating mould plate method

A technology of porous ceramics and template method, used in the preparation of porous ceramics and the field of controllable porous ceramics, can solve the problems of poor mechanical properties, serious stress concentration, and difficulty in obtaining high porosity products.

Active Publication Date: 2011-06-29
SHANGHAI BIO LU BIOMATERIALS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that it is difficult to obtain products with high porosity, and the uniformity of pore distribution is also poor.
(2) Organic foam impregnation process, impregnating the ceramic slurry with organic foam, and burning off the organic foam after drying; although this method is suitable for preparing porous ceramics with high porosity and high open pores, its disadvantage is that there are many pore wall defects, The stress concentration is serious, resulting in poor mechanical properties
However, too large internal connection diameter will make the material fragile, while too small internal connection diameter will limit or hinder the blood supply in the material, affecting the formation of tissues and the establishment of functions

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
  • Method for producing micro-structure controllable porous ceramic with agglutinating mould plate method
  • Method for producing micro-structure controllable porous ceramic with agglutinating mould plate method
  • Method for producing micro-structure controllable porous ceramic with agglutinating mould plate method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] To make porous ceramic products as shown in Figure 3, the raw material is pure alumina, the required diameter is 30mm, the thickness is 7mm, the porosity is above 70%, the diameter of the large pores is about 500μm, and the connection diameter in the pores is 120μm. Specific steps are as follows:

[0032] (1) Make a plastic mold with an inner diameter of 35mm and a height of 20mm, and touch bolts up and down.

[0033] (2) Use standard sieves to screen out polystyrene particles with a diameter of 500-600 μm.

[0034] (3) According to Fig. 2, add 12 grams of benzoyl peroxide catalyst in 100 ml methyl methacrylate (MMA) binder, mix evenly and react completely.

[0035] (4) Add the prepared binder to the selected polystyrene granules, the amount of binder added is 10ml / 100g plastic granules, and the plastic granules and the binder are evenly mixed for 3 minutes.

[0036] (5) Put the polystyrene particles coated with adhesive on the surface into the mould, pressurize the upp...

Embodiment 2

[0041] Make a porous gradient bioceramic product with small outer holes and large core holes as shown in Figure 4. The outer layer is small holes and has a certain mechanical strength, and the other parts are large holes that will guide the attachment of cells and the direction of new blood vessels. There is a medullary cavity in the center, which is conducive to obtaining sufficient blood supply and nutrition. The raw material is pure β-tricalcium phosphate, which requires a diameter of 30mm, a thickness of 7mm, a porosity of more than 70%, a large pore diameter of about 600μm, and a connecting neck of 180μm. Specific steps are as follows:

[0042] (1) Make a plastic mold with an inner diameter of 35mm and a height of 20mm, and touch bolts up and down.

[0043] (2) Use a standard type of sieve to screen out polystyrene particles with a diameter of 600-700 μm and a diameter of 100-150 μm, respectively.

[0044] (3) according to Fig. 2, add the benzoyl peroxide catalyst of 14...

Embodiment 3

[0051] To produce the porous gradient ceramic block-shaped product as shown in Figure 5, the raw material is CaO-stabilized zirconia, and the length, width and height are required to be 50mm, 10mm and 20mm respectively. The porosity is more than 70%, the diameter of the macropore is about 500 μm, and the connection neck in the hole is 60 μm. Specific steps are as follows:

[0052] (1) Make plastic molds with length, width and height of 60mm, 30mm and 15mm respectively.

[0053] (2) Using a standard type of sieve, sieve out polyethylene particles with a diameter of 500-600 μm and a diameter of 50-100 μm, respectively.

[0054] (3) According to Figure 2, add 8 grams of benzoyl peroxide catalyst to 100 ml of methyl methacrylate (MMA) binder, mix evenly and react completely.

[0055] (4) Add the prepared methyl methacrylate binder to the selected polystyrene granules of two sizes. The amount of the binder is 10ml / 100g of the plastic granule quality. Mix the agent thoroughly and...

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
sizeaaaaaaaaaa
viscosityaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention mainly relates to a preparation method of porous ceramics. The invention adopts the felting template method to produce the controllable porous ceramics with miniature structure. The invention is characterized in that the method adopts caking agent to felt plastic grains so as to form the truss template, thereby reaching the aim of controlling the size of the inside connecting diameter of the porous ceramics through adjusting the caking agent concentration and the size of the sticking point among the plastic grains; then the plasm infusing moulding template copying is proceeded,so as to finally obtain the corresponding product after sintering and moulding. The poriness of the porous ceramics produced by the invention can be controlled between 50 to 90, the hole diameter canbe controlled between 10 millimeters and 7000 millimeters, and the inside connecting diameter of the holes can be controlled between 1 millimeters and 3000 millimeters. The invention can be used for producing the millimeters with equal hole diameter and porous grade ceramic materials.

Description

technical field [0001] The invention relates to a method for preparing porous ceramics, more precisely, a method for preparing porous ceramics with controllable microstructure by using a bonding template method, which belongs to the technical field of ceramic materials. Background technique [0002] Porous materials refer to materials with a certain size and number of pore structures. Among them, porous ceramics are a new type of ceramic materials, also known as porous functional ceramics. porous ceramic products. Porous ceramics are widely used in biological, medical, metallurgy, energy, environmental protection, chemical and other fields as biological materials, industrial solid-liquid separation materials, liquid filtration and purification materials, gas purification materials, chemical reaction catalyst carriers, sound-absorbing and heat-insulating materials, etc. It has attracted great attention from the global material science community, and has developed rapidly, wi...

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): C04B38/00C04B38/06
Inventor 张法明常江卢建熙
Owner SHANGHAI BIO LU BIOMATERIALS
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