Directional orifice carbide biological ceramic material and preparation method thereof

A bio-ceramic material, bio-ceramic technology, applied in the field of porous materials, can solve the problems of template structure difference, ceramic material structure difference, inability to clearly describe the relationship between material properties and structure, etc., to expand the scope of application, good affinity, The effect of improving uniformity

Inactive Publication Date: 2009-10-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many factors lead to differences in the template structure, which ultimately lead to structural differences in this type of ceramic material, making it impossible for people to clearly explain the relationship between their material properties and structure, which limits the scope of application of this type of material

Method used

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  • Directional orifice carbide biological ceramic material and preparation method thereof
  • Directional orifice carbide biological ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First take by weighing phenolic resin, tetraethyl orthosilicate, p-toluenesulfonyl chloride and water respectively by phenolic resin: tetraethyl orthosilicate: p-toluenesulfonyl chloride: water=60%: 20%: 15%: 5% by weight, Stir in a water bath at 50°C to form a colloid; move the colloid to a commercially available plastic centrifuge tube with a conical bottom, fix the centrifuge tube on a device that can precisely control the lift, adjust the bottom of the centrifuge tube to be in contact with the surface of liquid nitrogen, and then Descend the centrifuge tube at a rate of 20 mm / h until the colloids in it are completely submerged in liquid nitrogen, then stop the descent and maintain this state for 3 hours; then place the centrifuge tube in a lyophilizer to freeze dry, freeze The drying time is 48 hours. The sample is taken out, placed in a tube furnace, fed with nitrogen and raised to 800°C at a rate of 2°C / min, kept at a constant temperature for 5 hours, and then lowe...

Embodiment 2

[0028] First weigh phenolic resin, tetraethyl orthosilicate, titanium orthosilicate respectively according to phenolic resin: ethyl orthosilicate: butyl titanate: polyoxymethylene: water=50%: 20%: 13%: 7%: 10% by weight Butyl acetate, polyoxymethylene and water were stirred in a water bath at 40°C to form a colloid; the colloid was transferred to a commercially available plastic centrifuge tube with a conical bottom, and the centrifuge tube was fixed on a device that could precisely control the lift, and the centrifuge was adjusted. The bottom of the tube is in contact with the surface of liquid nitrogen, and then the centrifuge tube is lowered at a rate of 30 mm / hour until the colloid in it is completely submerged in liquid nitrogen, then stops falling and remains in this state for 3 hours; then place the centrifuge tube in Freeze-dry in a freeze dryer for 72 hours, take out the sample, put it into a tube furnace, pass nitrogen gas and raise the temperature to 800°C at a rate ...

Embodiment 3

[0030] First weigh phenolic resin, butyl titanate, hexamethylenetetramine and water, stirred in a 50°C water bath to form a colloid; move the colloid to a conical plastic centrifuge tube at the bottom, fix the centrifuge tube on a device that can precisely control the lift, adjust the bottom of the centrifuge tube to contact the surface of liquid nitrogen, and then 20mm / hour descending rate, make the plastic centrifuge tube descend until the colloid in the centrifuge tube is completely submerged in liquid nitrogen, then stop descending and keep this state for 3 hours; then place the centrifuge tube in a lyophilizer to freeze-dry for 48 hour, take out the sample, put it into a tube furnace, feed nitrogen and raise the temperature to 800°C at a rate of 2°C / min, keep the temperature for 5 hours, and then lower it to room temperature; take out the sample, place it in a graphite heating furnace, and feed it with argon As a protective gas, raise the temperature to 1600°C at a heatin...

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Abstract

The invention relates to a directional orifice carbide biological ceramic material and a preparation method thereof, in particular to a directional orifice carbide biological ceramic material and a preparation method with the structure characteristics of the biological orifice of artificial simulation. The directional pore carbide biological ceramic material comprises carbide and vasiform orifices with the orifice sizes from 1 to 20 microns directionally distributed in the carbide, the porosity of the orifice is from 20 percent to 70 percent and the orifice structure is anisotropic and connected by millipores. The preparation method is as follows: first applying the method of freezing in directional movement to the colloidal dispersion system containing a ceramic precursor to solidify a dispersant under control and along with a regulated direction and applying a vacuum drying process to get the directional orifice dried gel containing ceramic precursors and implementing the heat treatment on the dried gel to get the directional orifice carbide biological ceramic material. The invention greatly improves the homogeneity of the components in the material, thereby expanding the scope of application of the product. The material can be applied to orthopedics, plastic surgeon, dental surgery, cardiovascular surgery, ophthalmosurgery, ear-nose-throat department, general surgery and the like.

Description

technical field [0001] An oriented pore carbide bioceramic material and a preparation method thereof relate to an oriented pore carbide bioceramic material with artificially simulated biological pore structure characteristics and a preparation method thereof, belonging to the technical field of porous materials. Background technique [0002] At present, the preparation method of carbide ceramic materials with biological structure characteristics is to use natural plant stems as template raw materials, and obtain structural memory templates through drying, dehydration and carbonization, and then use three different methods, including gaseous infiltration method , liquid infiltration method or sol-gel impregnation method, the carbide ceramic precursor is infiltrated or impregnated into the structural memory template, and after drying and heat treatment, the porous ceramics with biological pore structure characteristics are prepared. However, porous ceramics prepared by the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B35/56C04B35/565
Inventor 徐子颉王玮衍逯爱慧马超汪飞
Owner TONGJI UNIV
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