Wollastonite-apatite frit compounded medical glass ceramic and preparation method thereof

A technology of glass-ceramic and glass-ceramic frit, which is applied in the field of biological glass ceramics, can solve the problems such as difficult control and change of properties, and achieve the effects of easy industrial promotion and use, guaranteed uniformity, and low preparation process requirements

Inactive Publication Date: 2014-07-30
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the technical defects that the performance of AW bioactive glass-ceramics prepared by the existing melting method, sol-gel method and sintering method is not easy to control and change, the invention provides a kind of apatite and wollastonite crystal phase content can be Controlled and homogeneous bioactive medical glass-ceramics with tunable mechanical properties

Method used

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  • Wollastonite-apatite frit compounded medical glass ceramic and preparation method thereof
  • Wollastonite-apatite frit compounded medical glass ceramic and preparation method thereof
  • Wollastonite-apatite frit compounded medical glass ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Wollastonite glass-ceramic frit is made by melting the following raw materials in parts by weight: SiO 2 67.5 parts, CaO20 parts, Na 2 O12.5 copies;

[0034] The apatite glass-ceramic frit is smelted from the following raw materials in parts by weight: SiO 2 46 copies, Al 2 o 3 3.3 parts, CaO10 parts, BaO2 parts, MgO3.6 parts, B 2 o 3 2 parts, Na 2 O+K 2 O13 parts, CaF 2 0.6 parts, P 2 o5 4.5 parts, ZnO3 parts, Sb 2 o 3 1 serving.

[0035] The specific preparation method is as follows:

[0036] (1) Preparation of wollastonite glass-ceramic frit: ①Weigh the wollastonite frit raw material according to the above parts by weight, mix and pour it into a mixer, and stir for 1 hour; Hours, water quenching, drying, crushing and forming frit powder;

[0037] (2) Preparation of apatite glass-ceramic frit: ①Weigh the apatite frit raw material according to the above parts by weight, mix and pour it into a mixer, and stir for 1 hour; ②Pour it into a kiln at 1550°C, and...

Embodiment 2

[0051] The second embodiment is based on the first embodiment, only the ratio of silicon dioxide and calcium oxide in the wollastonite frit is changed, and other proportions remain unchanged. During preparation, the melting temperature of wollastonite frit was 1550° C., and the melting time was 2 hours; the heating rate, sintering temperature and time of sintering after mixing were the same as those in Example 1.

[0052] Wollastonite glass-ceramic frit is made by melting the following raw materials in parts by weight: SiO 2 62.5 parts, CaO25 parts, Na 2 O12.5 parts; Apatite glass-ceramic frit is formed by melting the raw materials of following parts by weight: SiO 2 46 copies, Al 2 o 3 3.3 parts, CaO10 parts, BaO2 parts, MgO3.6 parts, B 2 o 3 2 parts, Na 2 O+K 2 O13 parts, CaF 2 0.6 parts, P 2 o 5 4.5 parts, ZnO3 parts, Sb 2 o 3 1 serving.

[0053] The X-ray diffraction pattern shows that the prepared glass-ceramic contains two crystal phases of wollastonite and ...

Embodiment 3

[0057] Embodiment 3 is based on Embodiment 1, the mixing ratio of wollastonite frit and apatite frit is changed to 8:2, the ratio of the two frits and the melting conditions remain unchanged, the mixing sintering heating rate, The sintering temperature and time remained unchanged.

[0058] Wollastonite glass-ceramic frit is made by melting the following raw materials in parts by weight: SiO 2 67.5 parts, CaO20 parts, Na 2 O12.5 parts; Apatite glass-ceramic frit is formed by melting the raw materials of following parts by weight: SiO 2 46 copies, Al 2 o 3 3.3 parts, CaO10 parts, BaO2 parts, MgO3.6 parts, B 2 o 3 2 parts, Na 2 O+K 2 O13 parts, CaF 2 0.6 parts, P 2 o 5 4.5 parts, ZnO3 parts, Sb 2 o 3 1 serving.

[0059] The X-ray diffraction pattern shows that the prepared glass-ceramic contains two crystal phases of wollastonite and apatite. The bending strength tested on the WDW3100 electronic universal testing machine is 95.7MPa, and the bending strength tested on...

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Abstract

The invention discloses a wollastonite-apatite frit compounded medical glass ceramic and a preparation method thereof. The wollastonite-apatite frit compounded medical glass ceramic is prepared by mixing and sintering wollastonite glass ceramic frits and apatite glass ceramic frits according to a certain proportion, the bending strength of the prepared material is more than or equal to 80MPa, the Vickers hardness tested by an FM-700 type microhardness tester is more than or equal to 5.80GPa (HV0.5), and the mechanical performance is adjustable. By respectively melting the two frits and mixing and sintering according to the proportion, the sintering and crystallization treatment temperature zones of the two frits are consistent, the sintering compatibility of the two frits can be guaranteed, and further the uniformity of structures and mechanical performance of the glass ceramic products can be guaranteed; and on the premise of having no need of regulating the composition matching of a single system, the mechanical performance of the glass ceramic can be adjusted by changing the mixing proportion of the mixed frits, the requirement of the preparation technology is low so as to facilitate the industrial popularization and use.

Description

technical field [0001] The present invention relates to the field of inorganic non-metallic materials, especially medical bioactive glass ceramics, specifically biological glass ceramics containing apatite (A, apatite) and wollastonite (W, wollastonite) crystalline phases (abbreviated as AW biological active glass-ceramics). Background technique [0002] AW bioactive glass-ceramics is a new type of material with excellent performance developed in recent years. As a medical implant, this type of material can form a close chemical combination with natural bone, and is widely used in clinical bone replacement repair materials. , bone defect filling materials, etc. [0003] In 1982, Kokubo and others in Japan developed AW bioactive glass-ceramic containing apatite, wollastonite crystal phase and glass phase by melting method. It has good biocompatibility and is safe and non-toxic after the product is implanted in the body. , No rejection and other adverse reactions, with high ...

Claims

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Application Information

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IPC IPC(8): C03C10/04
Inventor 姚树玉董亚群霍文龙韩野邵丹孙海清
Owner SHANDONG UNIV OF SCI & TECH
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