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A kind of combined casting preparation method of porous material

A technology of porous material and casting method, which is applied in environmental engineering, materials science, material processing engineering, medical and health fields, and can solve the problems of material composition, porosity, pore size and pore structure that cannot be realized, and achieve low equipment requirements and low production costs. The effect of low cost and simple preparation method

Active Publication Date: 2017-03-22
常州百隆微创医疗器械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the pore changes can only be carried out in one direction, and it is impossible to achieve a specific material composition, porosity, pore size, and pore structure at any position in the same material.

Method used

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  • A kind of combined casting preparation method of porous material
  • A kind of combined casting preparation method of porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023](1) Weigh 20g of gelatinized starch and 20g of alumina powder into a 200mL beaker, add 3mL TritonX-100, and stir well at room temperature. The obtained mixture was dried at 80° C. and ground to obtain a composite powder. Weigh 15g of the composite powder into a 100mL beaker, add 36mL of deionized water, stir evenly at room temperature and heat to boiling, then pass compressed gas into the bottom of the beaker and keep it for 3min to obtain a bubble volume of 80%, and an average bubble size of Casting slurry 1 with a thickness of 150 μm and a viscosity of 41 Pa·s.

[0024] (2) Weigh 20g of gelatinized starch, 5g of activated carbon powder and 5g of polystyrene powder into a 200mL beaker, add 3mL of TritonX-100, and stir well at room temperature. The resulting mixture was heated at 35 o C drying and grinding to obtain composite powder. Weigh 15g of the composite powder in a 100mL beaker, add 36mL of deionized water, stir evenly at room temperature and heat to boiling, t...

Embodiment 2

[0029] (1) According to Table 1, weigh the powder materials specified in the same formula and put them into 200mL beakers, add 20g gelatinized starch and 2mL TritonX-100 to each beaker, and stir evenly at room temperature. The resulting mixture was heated at 37 o C drying and grinding to obtain composite powders of different formulations.

[0030] (2) Select a certain composite powder, weigh 15g into two 100mL beakers (A and B), add 36mL deionized water each, stir evenly at room temperature and heat to boiling, then pour into A and B beakers Compressed gas was injected into the bottom and kept for 15min and 45s respectively. Cast the slurry in the B beaker into a mold with a thickness of 1 cm; then cast the slurry in the A beaker into the same mold with a thickness of 2 cm. After casting, place the mold at 40 o Stable at C for 24 hours to obtain a porous wet billet, and obtain a porous material after processing in the manner in the table.

[0031] (3) Replace the composite...

Embodiment 3

[0035] (1) Weigh 20g of gelatinized starch and 20g of alumina powder into a 200mL beaker, add 1mL TritonX-100, and stir evenly at room temperature. The resulting mixture was heated at 80 o C drying and grinding to obtain composite powder. Weigh 15g of the composite powder in a 100mL beaker, add 36mL of deionized water, stir evenly at room temperature and heat to boiling on a hot stage, then pass compressed air into the bottom of the beaker and keep it for 15min to obtain a bubble volume of 94%. Casting slurry 1 with an average bubble size of 205 μm and a viscosity of 29 Pa·s.

[0036] (2) Replace 1mL TritonX-100 with 1g albumin, 2mL bovine serum, and dry at 37 o C. Other conditions are as in step (1), and the casting slurry 2 with a bubble volume of 90%, an average bubble size of 160 μm, and a viscosity of 34 Pa·s is obtained.

[0037] (3) Replace 1 mL of TritonX-100 with 1.5 mL each of sodium lauryl sulfate and benzethonium chloride. Other conditions are as in step (1), a...

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Abstract

The invention discloses a combined casting preparation method of a porous material. The invention utilizes different powder materials or any combination thereof to form a uniform mixture with gelatinized starch and surfactants, and grinds them into composite powders with different formulations after drying. According to the porous material properties and combined structure requirements of the desired product, the solvent is added to mix evenly and foamed after heating, then the slurry is combined and cast to obtain a porous slurry, and after stabilization, the porous material is obtained through drying or sintering. The method has the advantages of simple operation, low equipment requirements, good universality, and controllable material, pore size, pore structure, and porosity. It has application prospects in the fields of drug sustained release, tissue engineering, catalyst carrier, pollutant adsorption, thermal insulation and solid-liquid separation.

Description

technical field [0001] The invention relates to a combined casting method for preparing porous materials, in particular to a method for obtaining casting slurry by using composite powder and preparing porous materials through a combined casting method and its application. It belongs to the technical fields of material science, material processing engineering, environmental engineering, medicine and health. Background technique [0002] Porous materials have been widely studied and applied in human production and life due to their various forms of porous structures. For the same porous material, it is of great significance to have different components, pore sizes, porosity or pore structures at different positions. Since its inception, porous materials with multiple pore structures or multiple components have played a pivotal role in the fields of pollutant adsorption, solid-liquid separation, tissue engineering, and fire insulation. According to reports, at present, the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B26/28C04B14/30C04B14/36C04B16/04C04B14/34C04B14/08
Inventor 徐昌禄杨磊白艳洁杨惠林韦之豪魏东磊
Owner 常州百隆微创医疗器械科技有限公司
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