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Porous tantalum workpiece fiber weaving method

A technology of fiber weaving and porous tantalum, which is applied in the field of biomaterial preparation, can solve the problems of difficult cleaning, slow deposition speed, high volume porosity, etc., and achieve good adaptability to flexible manufacturing environment, high processing efficiency, and high energy controllability Effect

Inactive Publication Date: 2015-07-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among them, porous tantalum prepared by vapor deposition method has the characteristics of high volume porosity, low elastic modulus and high surface friction coefficient, but the process requires strict operating conditions, slow deposition speed, large investment and high production cost. Insoluble metals are very difficult to evaporate, and vacuum environment is required for evaporation, which greatly increases the cost and limits its wide application
In addition, the organic foam impregnation method is likely to cause organic poison residues. This is because the binder and organic slurry are used, which are prone to toxicity and impurity residues, which are not easy to remove.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Porous tantalum workpiece fiber weaving method
  • Porous tantalum workpiece fiber weaving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] According to the shape of the porous tantalum workpiece, the geometric model of the porous tantalum workpiece formed by the multilayer structure is established, and the geometric model is calculated by computer to obtain the gap size between the tantalum foil strips in the geometric model, and the tantalum in each layer. Dimensional data for the foil strip.

[0052] The tantalum foil with a purity greater than 99.7% was cleaned with acetone and dried. Among them, the length×width×thickness of the tantalum foil is: 100mm×0.2mm×0.2mm, and the tantalum foil of this size is processed into a tantalum foil strip, and the length×width×thickness of the tantalum foil strip is: 10mm× 0.2mm×0.2mm.

[0053] The tantalum foil strips are braided two-dimensionally to form a network structure. When weaving, the angle between the tantalum foil strips is controlled to be 90°, and the gap between the tantalum foil strips is 0.3mm. After weaving, cellulose acetate is coated at the crossi...

Embodiment 2

[0058] According to the shape of the porous tantalum workpiece, the geometric model of the porous tantalum workpiece formed by the multilayer structure is established, and the geometric model is calculated by computer to obtain the gap size between the tantalum foil strips in the geometric model, and the tantalum in each layer. Dimensional data for the foil strip.

[0059] The tantalum foil with a purity greater than 99.7% is cleaned with absolute alcohol and dried. Among them, the length × width × thickness of the tantalum foil is: 100mm × 0.3mm × 0.4mm, and the tantalum foil of this size is processed into a tantalum foil strip, and the length × width × thickness of the tantalum foil strip is: 10mm × 0.3mm×0.4mm.

[0060] The tantalum foil strips are braided two-dimensionally to form a network structure. When weaving, the angle between the tantalum foil strips is controlled to be 90°, and the gap between the tantalum foil strips is 0.5mm. After weaving, cellulose acetate is...

Embodiment 3

[0065] In this example, the difference from Example 2 lies in that: after heating and pressing, the temperature is raised to 2000° C., and sintering is carried out at this temperature for 200 minutes, and the protective gas Ar is introduced during the sintering process. Then cool to room temperature to obtain the porous tantalum workpiece of the present invention.

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Abstract

The invention discloses a porous tantalum workpiece fiber weaving method. The method includes the steps that S1, a geometric model is built, and calculation is carried out; S2, tantalum foil strips are machined and formed; S3, fiber weaving is carried out to form layered structures formed by weaving the tantalum foil strips; S4, the obtained layered structures are stacked; S5, heating and pressurizing are carried out; S6, sintering is carried out, the structures are cooled to be room temperature, and a porous tantalum workpiece is obtained. According to the porous tantalum workpiece fiber weaving method, a net-shaped fiber thin layer is manufactured through two-dimensional fiber weaving by optimizing process parameters and precisely controlling the size of the tantalum foil thin strips. By means of stacking layer by layer, heating and pressurizing, biological porous tantalum is formed according to certain heating and sintering. The manufacturing method can be applied to the medical industry, solves the problems that environment pollution is caused when powder are stacked layer by layer and harmful residual matter are generated by other sintering methods and the vapor deposition method.

Description

technical field [0001] The invention relates to the technical field of biomaterial preparation, in particular to a fiber weaving method for a porous tantalum workpiece. Background technique [0002] At present, about 2 million patients in my country need joint replacement surgery every year. Therefore, there is a great demand for bone tissue repair materials. According to statistics, the annual global market for bone repair materials is more than 200 billion US dollars. Biomedical materials currently used in clinical practice mainly include: biomedical metal materials, biomedical organic materials (mainly refer to organic polymer materials), biomedical inorganic non-metallic materials (mainly refer to bioceramics, bioglass and carbon materials), and Biomedical composites. In contrast, biomedical metal materials, such as stainless steel, cobalt-based alloys, titanium and titanium alloys, and precious metals, have high mechanical strength, elasticity, and good processing pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 陈长军张敏严凯李洋张超张益邵王晓南章顺虎胡增荣
Owner SUZHOU UNIV