Preparation method of hydroxyapatite composite material for producing bone porcelain

A technology of hydroxyapatite and composite materials, applied in the field of ceramics, can solve problems such as environmental pollution, bone source shortage, unstable quality of ashes, etc., achieve good substitution, good compatibility, improve production process performance and product physicochemical The effect of indicators

Inactive Publication Date: 2017-06-06
广东金鹿陶瓷实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(1) There is a global shortage of bone sources; (2) The quality of ashes is unstable; (3) The production of ashes has caused serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0008] Example: Calcium oxide and water were mixed and stirred at a mass ratio of 1:1.5 for 10 hours to form a mixed solution, then sieved to remove iron, and the water content of the mixed solution was controlled at 30%, and then 0.3 nanometer silicon was added according to the mass ratio of the mixed solution. %, nano-zirconium 0.2%; then in an alkaline environment with a pH value of 10, press the mixed solution 500g / m 3 Spray phosphoric acid at a certain ratio, and control the temperature at 40 degrees to react for 10 hours. During the reaction, a long columnar hydroxyapatite powder is formed, and nano-silicon and nano-zirconium are evenly distributed in the powder generated after the reaction is completed;

[0009] (2) Centrifuge and dehydrate the above mixture to obtain a powder, then place the powder in a kiln for drying at 100 degrees until the mass water content is 4%, then crush the powder into a particle size of less than 1cm, and then put it in Firing in a kiln at 1...

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Abstract

The invention provides a preparation method of a droxyapatite composite material for producing bone porcelain. The preparation method comprises the following production steps: (1) mixing and stirring calcium oxide and water to form mixed liquid, sieving to remove iron, adding nano-slicon and nano-zirconium, and spraying phosphoric acid to react; and (2) carrying out centrifugal dewatering on the mixed liquid to obtain powder, drying the powder, crushing the powder, and firing the powder in a kiln, so as to obtain the droxyapatite composite material. The droxyapatite composite material prepared by virtue of the preparation method can be used for producing excellent functional ceramics, has good compatibility with living organisms and moreover achieves high strength and good alternative, the production process performance of traditional bone porcelain and the physicochemical indexes of products are greatly improved, and particularly, the material quality and use performance of the bone porcelain are improved to new levels; and the compressive strength of the bone porcelain produced from the droxyapatite composite material can reach 650MPa, and the tensile strength can reach 250MPa.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a method for preparing a hydroxyapatite composite material that can be used in the production of bone china. Background technique [0002] Bone china is a high-grade daily-use fine porcelain recognized in the international market. It has excellent properties such as fine porcelain, soft tone, high whiteness, good light transmittance, and regular shape. It has the highest price in the international market (equivalent to ordinary 10-15 times that of fine porcelain), the best economic benefits. With the improvement of people's living standards, the market demand is increasing day by day. In the past 20 years, the market share of bone china in the international ceramic market has expanded from the original 3-5% to the current 10-15%. But the production and popularization of bone china are severely restricted by the following three aspects. (1) There is a global shortage of bone sources; (2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/447C04B35/626
CPCC04B35/447C04B35/62605C04B2235/404C04B2235/428C04B2235/5454C04B2235/96
Inventor 黄利川黄增泓黄柳宏
Owner 广东金鹿陶瓷实业有限公司
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