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Directional orifice oxide material and preparation method thereof

A technology of oxides and directional holes, applied in the field of porous materials, can solve the problems of structural differences of such materials, template structure differences, and limited application range of materials, so as to achieve the effect of improving uniformity and expanding application range

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 template structures, which ultimately lead to structural differences in this type of material, which limits the scope of application of this type of material

Method used

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  • Directional orifice oxide material and preparation method thereof
  • Directional orifice oxide material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First press phenolic resin: tetraethyl orthosilicate: p-toluenesulfonyl chloride: water=30%: 50%: 10%: 10% by weight, take respectively phenolic resin, tetraethyl orthosilicate, p-toluenesulfonyl chloride and water , stirred in a 40°C water bath 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, and adjust the position of the centrifuge tube so that the bottom of the centrifuge tube reaches Contact with the surface of liquid nitrogen, then lower the centrifuge tube at a rate of 50 mm / hour until the colloid in it is completely submerged in liquid nitrogen, then stop falling and keep it in this state for 3 hours; then put the centrifuge tube in a freeze dryer Freeze-dried in medium temperature for 48 hours, took out the sample, placed in a tube furnace, fed nitrogen gas and raised the temperature to 200°C at a rate of 2°C / min, kept the temper...

Embodiment 2

[0028] First weigh methylcellulose, titanyl sulfate, nitric acid and water according to the weight percentage of methylcellulose: titanyl sulfate: nitric acid: water=30%: 40%: 10%: 20%, and stir in a water bath at 60°C 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 position of the centrifuge tube so that the bottom of the centrifuge tube is in contact with the surface of liquid nitrogen, and then use 30mm / hour descending speed range will drop the centrifuge tube until the colloid therein is completely submerged in liquid nitrogen, then stop falling and keep this state for 3 hours; then place the centrifuge tube in a lyophilizer to lyophilize for 48 hours, Take out the sample, put it into a tube furnace, feed nitrogen gas and raise the temperature to 600°C at a rate of 2°C / min, keep the temperature constant for 5 hours, then feed air, a...

Embodiment 3

[0030] First weigh phenolic resin, butyl titanate, p-toluenesulfonyl chloride and water respectively according to phenolic resin: butyl titanate: p-toluenesulfonyl chloride: water=40%: 40%: 15%: 5% by weight, at 50 Stir in a water bath at ℃ 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 lifting, adjust the position of the centrifuge tube so that the bottom of the centrifuge tube is in line with the surface of liquid nitrogen Contact, then drop the centrifuge tube at a rate of 20 mm / h until the colloids in it are completely submerged in liquid nitrogen, then stop the drop and keep this state for 3 hours; then place the centrifuge tube in a lyophilizer to lyophilize for 48 hours, take out the sample, place it in a tube furnace, feed nitrogen gas and raise the temperature to 200°C at a rate of 2°C / min, keep the temperature for 5 hours, then feed air, a...

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Abstract

The invention relates to a directional orifice oxide material and a preparation method thereof, in particular to a directional orifice oxide material and a preparation method with the structure characteristics of the biological orifice of artificial simulation. The preparation method is as follows: first applying the method of freezing in directional movement to the colloidal dispersion system containing oxide 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 an oxide precursor and implementing the heat treatment on the dried gel to get the directional orifice oxide material. The material comprises oxide and directional orifice structure, wherein the directional orifice structure is the vasiform orifices with the orifice sizes from 1 to 20 microns and directionally distributed in the oxide, the porosity of the orifice is from 20 percent to 80 percent. The orifice structure is anisotropic and connected by millipores. The invention greatly improves the homogeneity of the components in the material. The material has good characteristics of biological porous structure and can be applied to structural support, acoustic absorption, biological tissue engineering and the like.

Description

technical field [0001] An oriented pore oxide material and a preparation method thereof relate to a porous material with the characteristics of an artificially simulated biological pore structure and a preparation method thereof, and belong to the technical field of porous materials. Background technique [0002] As people's research on inorganic porous materials continues to deepen, a variety of porous materials have been developed. Among them, porous materials with biological structure characteristics have excellent thermal conductivity, electrical conductivity, fluid transport, biocompatibility and mechanical properties due to their structural characteristics. In terms of characteristics, it has characteristics that ordinary porous ceramics do not have. Such materials have broad application prospects in structural support, sound wave absorption, and biological tissue engineering. [0003] At present, the preparation method of porous materials with biological structural c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/14C04B35/46C04B35/48C04B35/10C04B35/453C04B35/26C04B35/624
Inventor 徐子颉马超王玮衍逯爱慧汪飞
Owner TONGJI UNIV
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