Ceramic material and preparation method thereof

A technology of ceramic materials and powder materials, which is applied in the field of calcium silicate/saufen-feldspar-based composite biodegradable ceramic materials and its preparation, can solve the problems of low degradability of saufen-feldspar, and achieve easy popularization and application, simple preparation process, and easy operation. easy effect

Inactive Publication Date: 2017-05-31
LIAOCHENG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the degradation experiments show that the degradability of sauconite is significantly lower than that of wollastonite and zinc ions are dissolved during the degradation process.

Method used

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  • Ceramic material and preparation method thereof
  • Ceramic material and preparation method thereof
  • Ceramic material and preparation method thereof

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Experimental program
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specific Embodiment approach

[0020] A preparation method of a ceramic material, comprising the steps of:

[0021] Step 1) Preparation of ZnO–CaO–SiO 2 System sol-gel powder material;

[0022] In step 2), the powder material prepared in step 1) is put into a muffle furnace for heating and heat preservation. After the sintering is completed, the heating is stopped, and the furnace is cooled to obtain the in-situ calcium silicate / synthetic composite bioceramic material.

[0023] Step 1) The powder preparation method used is to use ethyl orthosilicate, calcium nitrate tetrahydrate and zinc nitrate hexahydrate as silicon source, calcium source and zinc source respectively. Zinc doping by sol-gel method to prepare ZnO–CaO–SiO 2 It is a sol. The sol is aged in a constant temperature water bath. After the gel is formed and dried in a drying oven, it is ball milled and sieved to obtain a powder. ZnO–CaO–SiO 2 The amount of ZnO added in the sol is 5-20mol%, ZnO–CaO–SiO 2 The diameter of the colloidal sol powde...

Embodiment 1

[0027] (1) Take 13.216g of calcium nitrate tetrahydrate, 5.94g of zinc nitrate hexahydrate and 25.84mL of ethyl orthosilicate by weight. First, tetraethyl orthosilicate was added to 23.76mL of water and 3.3mL of 2mol / L nitric acid solution was added as a catalyst for pre-hydrolysis for 60 minutes. During this period, the magnetic stirrer was used to stir continuously, and then the corresponding nitrates of calcium and zinc were added to stir respectively. After fully dissolving to form a sol, place it in a closed container at room temperature for a period of time, and after it forms a gel, place it in a constant temperature water bath at 60°C for aging treatment. Then place it in a drying oven and dry it at 120°C to obtain a xerogel, which is ball milled and sieved to obtain a powder with a particle size of 38-74 μm.

[0028] (2) Put the powder sample into the muffle furnace, raise the temperature from room temperature to 700°C at a heating rate of 5°C / min for stabilization tr...

Embodiment 2

[0030] (1) Take 15.576g of calcium nitrate tetrahydrate, 2.97g of zinc nitrate hexahydrate and 25.84mL of ethyl orthosilicate by weight. First, tetraethyl orthosilicate was added to 23.76mL of water and 3.3mL of 2mol / L nitric acid solution was added as a catalyst for pre-hydrolysis for 60 minutes. During this period, the magnetic stirrer was used to stir continuously, and then the corresponding nitrates of calcium and zinc were added to stir respectively. After fully dissolving to form a sol, place it in a closed container at room temperature for a period of time, and after it forms a gel, place it in a constant temperature water bath at 60°C for aging treatment. Then place it in a drying oven and dry it at 120°C to obtain a xerogel, which is ball milled and sieved to obtain a powder with a particle size of 38-74 μm.

[0031] (2) Put the powder sample into the muffle furnace, raise the temperature from room temperature to 700°C at a heating rate of 5°C / min for stabilization tr...

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Abstract

The invention belongs to the field of biological materials, and discloses a preparation method of a ceramic material. The method comprises the following steps of preparing a ZnO-CaO-SiO2 sol-gel powder material; putting a powder sample prepared in the first step into a muffle furnace for heating and heat preservation; and after sintering, stopping heating and carrying out furnace cooling to obtain an in-situ generated calcium silicate / hardystonite-based composite bioceramic material. The ceramic material is the calcium silicate / hardystonite-based composite biodegradable material. The ceramic material has the beneficial effects that the ceramic powder with uniformity and different zinc contents is accurately prepared through a sol-gel method, and thermal treatment is carried out by using the muffle furnace and the calcium silicate / hardystonite-based composite bioceramic material is generated in situ. The degradation rate can be regulated and controlled through adjusting the content of hardystonite in the material on the premise of ensuring the biological activity of the material. The ceramic material is simple and fast in preparation technology, simple and controllable in operation, and easy to popularize and apply.

Description

technical field [0001] The invention relates to the field of medical biomaterials, and more precisely relates to a calcium silicate / saudenite-based composite biodegradable ceramic material and a preparation method thereof. Background technique [0002] Bioceramics (Bioceramics) is a class of ceramic materials that are directly used in or directly related to the human body and have specific biological or physiological functions. They are mainly used as biological hard tissue replacement materials for orthopedics, plastic surgery, dentistry, oral surgery, etc. As a biomedical material, bioceramics must have the following characteristics: good biological and mechanical compatibility, excellent affinity with biological tissues, sterilizing properties, and good physical and chemical stability. With the continuous development of life science and material science, biomaterials have developed into the third generation of biomedical composite materials that can promote the body's ow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/22C04B35/624C04B35/626
CPCC04B35/22C04B35/624C04B35/62605C04B2235/3208C04B2235/3284C04B2235/3418
Inventor 马杰王长征黄宝旭赵性川陈书敏王树亮
Owner LIAOCHENG UNIV
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