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Cold isostatic pressing sintering preparation method of bioglass

A technology of cold isostatic pressing and biological glass, which is applied in glass manufacturing equipment, glass forming, manufacturing tools, etc., can solve the problems of material biological activity and toxicological influence, achieve broad biomedical application prospects and high production efficiency , save the effect of protecting the environment

Inactive Publication Date: 2020-08-21
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above sintering preparation process, in view of the crystallization of the material and the higher sintering temperature, it will have a huge impact on the biological activity and toxicity of the material.

Method used

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  • Cold isostatic pressing sintering preparation method of bioglass
  • Cold isostatic pressing sintering preparation method of bioglass
  • Cold isostatic pressing sintering preparation method of bioglass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A cold isostatic pressing sintering preparation method of bioglass, comprising the following steps:

[0025] Step 1: Put 20μm biological glass powder and deionized water in a centrifuge tube, the volume fraction ratio of biological glass powder and deionized water is 3:2 (60%:40%). Then install the centrifuge tube on a vortex mixer for uniform mixing, and the mixing time is 30min.

[0026] Step 2: Fill the uniform mixed slurry of biological glass powder and deionized water into a flexible rubber mold and seal it with a rubber stopper. The three-dimensional shape of the rubber mold is cylindrical. Then, the sealed rubber mold with the mixed slurry was placed in a cold isostatic press for cold sintering. The cold isostatic pressing pressure was 300 MPa and the holding time was 120 min.

[0027] Step 3: The cold isostatic pressed rubber mold with mixed slurry was placed in a constant temperature and humidity box for drying treatment. The temperature was set at 60 °C, the ...

Embodiment 2

[0029] A cold isostatic pressing sintering preparation method of bioglass, comprising the following steps:

[0030] Step 1: Put 500 nm biological glass powder and deionized water in a centrifuge tube, the volume ratio of biological glass powder and deionized water is 3:2 (. Then install the centrifuge tube on a vortex mixer for uniform mixing , and the mixing time was 30 min.

[0031] Step 2: Fill the uniform mixed slurry of biological glass powder and deionized water into a flexible rubber mold and seal it with a rubber stopper. The three-dimensional shape of the rubber mold is a triangular prism. Then, the sealed rubber mold with the mixed slurry was placed in a cold isostatic press for cold sintering. The cold isostatic pressing pressure was 300 MPa and the holding time was 120 min.

[0032] Step 3: Put the cold isostatic pressed rubber mold containing the mixed slurry in a constant temperature and humidity box for drying treatment. The temperature is set at 50 °C, the hum...

Embodiment 3

[0034] A cold isostatic pressing sintering preparation method of bioglass, comprising the following steps:

[0035] Step 1: Put 500 nm biological glass powder and deionized water in a centrifuge tube, the volume fraction ratio of biological glass powder and deionized water is 4:1. Then the centrifuge tube was installed on a vortex mixer for uniform mixing, and the mixing time was 30 min.

[0036] Step 2: Fill the uniform mixed slurry of biological glass powder and deionized water into a flexible rubber mold and seal it with a rubber stopper. The three-dimensional shape of the rubber mold is a square prism. Then, the sealed rubber mold with the mixed slurry was placed in a cold isostatic press for cold sintering. The cold isostatic pressing pressure was 300 MPa and the holding time was 120 min.

[0037] Step 3: The cold isostatic pressed rubber mold with mixed slurry was placed in a constant temperature and humidity box for drying treatment. The temperature was set at 60 °C, t...

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Abstract

A cold isostatic pressing sintering preparation method of bioglass comprises the following steps: 1, uniformly mixing bioglass powder used as a cold pressing sintering raw material and a liquid-phasesintering aid to obtain a mixed slurry; wherein the particle size of the bioglass powder used in step 1 is 20-500 nm; the volume fraction ratio of the bioglass powder to the liquid-phase sintering aidis 12:(3-8); 2, putting the mixed slurry into a mold, then putting the mold into a cold isostatic press, and carrying out cold sintering treatment, wherein the isostatic cool pressing pressure is 300-500 MPa, and the pressure maintaining time is 5-120 min; and 3, drying the mixed slurry obtained in step 2, wherein the temperature is 40-60 DEG C, the humidity is 50%, and the time is 24-48 hours.

Description

technical field [0001] The invention relates to a cold isostatic pressing sintering preparation method of biological glass, in particular to a cold isostatic pressing sintering preparation method of preparing biological glass of a certain shape by sintering at room temperature. Background technique [0002] Bioglass refers to glass materials that achieve specific biological or physiological functions. Research on bioglass can be traced back to the late 1960s. Professor Larry L. Hench of the University of Florida first invented the bioglass material in 1969. The main component of bioglass is about 45% Na 2 O, 25% CaO, 25% SiO 2 and 5% P 2 o 5 . If adding a small amount of K 2 O, MgO, CaF 2 , B 2 o 3 And other ingredients, you can get a series of bio-glasses with practical value. Due to the good bioactivity and biocompatibility of bioglass, there is no rejection, inflammation and tissue necrosis after the material is implanted into the human body, and it can form os...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/06
CPCC03B19/063
Inventor 胡春峰徐强蒋安娜索尔沃托瑞·格拉索
Owner SOUTHWEST JIAOTONG UNIV
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