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Gradient porous material

A technology of gradient porous and porous materials, applied in the field of porous materials, can solve the problems of poor bonding performance of porous materials at both ends of the interface, different chemical reactions at both ends of the interface, and large resistance, so as to be beneficial to bone regeneration and reduce the impact of the interface. , good effect of bone ingrowth

Inactive Publication Date: 2018-06-01
CHONGQING RUNZE PHARM CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Among the many gradient porous materials mentioned above, the porous materials with different gradients are irrelevant to each other, and the problems caused by the interface between different gradients are more prominent, such as the resistance of the working medium flowing through the interface is relatively large, the chemical reactions at both ends of the interface are different, and the preparation process Cracks appear at the interface in Zhongyi, and the bonding performance of porous materials at both ends of the interface is not good, etc.

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Embodiment 1

[0026] A gradient porous material, wherein the gradient of the porous material is graded, and is graded according to the pore size of the pores in the gradient porous material body. The porous material formed by larger pores, the pores of the gradient porous materials that constitute the gradient porous material are interconnected, and in this example, the interface area of ​​two adjacent gradient porous materials is larger than that of two adjacent gradient porous materials. For hierarchical porous materials, the plane is used as the area of ​​the plane of the interface.

[0027] In this example, see figure 1 The gradient porous material in this embodiment is porous tantalum, which is divided into two gradient levels. The first gradient level porous material 1 is porous tantalum with a pore diameter of 1-9 μm, and the pores 1-1 are interconnected. The second gradient level porous material 2 It is a two-stage porous tantalum, the diameter of the large pores 2-1 is 1200-1500 μ...

Embodiment 2

[0035] A gradient porous material, wherein the gradient of the porous material is graded, and is graded according to the pore size of the pores in the gradient porous material body. The porous material formed by larger pores, the pores of the gradient porous materials that constitute the gradient porous material are interconnected, and in this example, the interface area of ​​two adjacent gradient porous materials is larger than that of two adjacent gradient porous materials. For hierarchical porous materials, the plane is used as the area of ​​the plane of the interface.

[0036] In this example, see the specific structure figure 2 , the gradient porous material in this example is Al 2 o 3 , divided into 3 gradient levels, the first gradient level porous material 3 (that is, the smallest gradient level porous material), is porous Al with a pore size of 20-40 μm 2 o 3 , the pores 3-1 are connected to each other, and the second gradient-level porous material 4 is two-level...

Embodiment 3

[0044] The gradient porous material of this embodiment is porous titanium, and its structure is similar to that of Example 1. The difference is that the first gradient-level porous titanium is porous titanium with a pore diameter of 700-900 nm, and the second gradient-level porous titanium is three-level porous titanium. The first-stage pore diameter is 400-600 μm, and its cavity wall is composed of the second-stage porous titanium with a pore diameter of 40-70 μm. The cavity wall of the second-stage porous titanium is composed of the third-stage porous titanium with a pore diameter of 700-900 nm. The graded porous titanium is the same material as the first gradient graded porous titanium.

[0045] The preparation method of this kind of porous titanium is as follows:

[0046] (1) Material preparation

[0047] Titanium powder with a particle size of 200-300nm is used as raw material, urea with a particle size of 800nm-1000nm is used as the smallest primary pore-forming agent, ...

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Abstract

The invention provides a gradient porous material. Gradient of the porous material is graded according to the size of pores in the gradient porous material body, the gradient porous material is formedby preparing pores with large diameter from a porous material with the minimum gradient grade as a raw material, and pores of porous materials of all gradient grades for forming the gradient porous material are intercommunicated. According to the gradient porous material with the structure, the porous materials of different gradient grades have the same minimum-grade porous material structural units, influence of joint interfaces between different gradients is reduced greatly, and realization of the performance of the gradient porous material is ensured.

Description

technical field [0001] The invention relates to porous materials, in particular to a gradient porous material. Background technique [0002] As an important part of gradient functional materials, gradient porous materials have been more and more widely used in people's daily life, production and national defense, such as biological materials, thermal insulation materials, porous electrodes, piezoelectric materials, catalytic converters, Sound-absorbing materials, combustion chambers and filters, etc., for example, when gradient porous materials are used in catalysis or filtration conditions, the filter screen with gradient pore structure is easier to wash holes and has higher catalytic efficiency. According to the chemical composition of materials, gradient porous materials can be divided into gradient porous metals, gradient porous ceramics, gradient porous polymers and composite materials. Due to functional requirements, each gradient porous material often occupies a cert...

Claims

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Application Information

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IPC IPC(8): A61L27/56A61L27/50A61L27/04A61L27/06B22F3/11C04B38/06C04B35/10C04B35/636C04B35/632C04B35/622B01D39/20
CPCA61L27/047A61L27/06A61L27/50A61L27/56A61L2430/02B01D39/2068B22F3/1109B22F3/1121C04B35/10C04B35/622C04B35/632C04B35/6365C04B38/0645C04B38/007
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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