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Gradient porous titanium mesh and preparation method of super-hydrophobic gradient porous titanium mesh

A gradient porous and super-hydrophobic technology, applied in the field of surface processing, can solve the problems of reducing the bonding force between the substrate and the coating, complicated steps, etc., and achieve the effect of improving the oil-water separation rate, adjustable mechanical strength, and high filtration accuracy.

Active Publication Date: 2021-06-25
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experiments have shown that the oil-water separation rate of commercial titanium mesh with superhydrophilic TiO2 nanotube film layer can reach 98%, but this method requires subsequent heat treatment of the entire titanium mesh in order to control the nanotube structure , the steps are complicated and may reduce the bonding force between the substrate and the coating

Method used

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Effect test

Embodiment 1

[0063] 1. Porous structure design and laser processing of gradient porous titanium

[0064] Such as Figure 4 As shown, the overall gradient porous titanium mesh is divided into two parts: the upper coarse porous layer and the lower fine porous layer.

[0065] The upper coarse-porous layer structure is a uniform three-dimensional spatially connected porous network structure with a pore diameter of 700 μm and a porosity of 76.8%. This part of the hole network structure consists of a circular arc edge with a thickness of 250 μm in the XZ plane, a chord length of 800 μm, and 130° and a support column with a height of 80 μm in the Z direction; and a circle with a thickness of 250 μm in the YZ plane, a chord length of 800 μm, and 130°. Composed of arc edges and Z-direction support columns with a height of 80 μm and a thickness of 250 μm.

[0066] The lower pore layer structure is a uniform three-dimensional spatially connected porous structure with a pore diameter of 200 μm and a...

Embodiment 2

[0079] 1. Porous structure design and laser processing of gradient porous titanium

[0080] Such as Figure 5 As shown, the overall gradient porous titanium mesh is divided into two parts: the upper coarse porous layer and the lower fine porous layer.

[0081] The upper coarse-porous layer structure is a uniform three-dimensional spatially connected porous network structure with a pore diameter of 750 μm and a porosity of 80.5%. This part of the hole network structure consists of a circular arc edge with a thickness of 275 μm in the XZ plane, a chord length of 900 μm, and 140° and a support column with a height of 90 μm in the Z direction; and a circle with a thickness of 275 μm in the YZ plane, a chord length of 900 μm, and 140°. It is composed of arc ribs and Z-direction support columns with a height of 90 μm and a thickness of 275 μm.

[0082] The lower pore layer structure is a uniform three-dimensional spatially connected porous structure with a pore diameter of 250 μm ...

Embodiment 3

[0096] 1. Porous structure design and laser processing of gradient porous titanium

[0097] The overall gradient porous titanium mesh is divided into two parts: the upper coarse porous layer and the lower fine porous layer.

[0098] The upper coarse-porous layer structure is a uniform three-dimensional spatially connected porous network structure with a pore diameter of 800 μm and a porosity of 88.7%. This part of the hole network structure consists of an arc edge with a thickness of 300 μm in the XZ plane, a chord length of 1000 μm, and 150°, and a support column with a height of 100 μm in the Z direction; and a circle with a thickness of 300 μm in the YZ plane, a chord length of 1000 μm, and 150°. It is composed of arc edges and Z-direction, 100 μm in height and 300 μm in thickness support columns.

[0099] The lower pore layer structure is a uniform three-dimensional spatially connected porous structure with a pore diameter of 300 μm and a porosity of 65%. This part of th...

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Abstract

The invention relates to the technical field of surface processing, in particular to a gradient porous titanium mesh and a preparation method of a super-hydrophobic gradient porous titanium mesh for efficient oil-water separation. The porous titanium with the internal pore size changing in a gradient mode in the thickness direction is prepared through the metal 3D printing technology, the gradient porous titanium serves as a base body to conduct super-hydrophobic modification treatment on all the three-dimensional surfaces of the gradient porous titanium, and finally the gradient porous titanium material with high liquid permeation rate, high separation efficiency, good repeatability, good chemical stability and high mechanical strength and for oil-water separation is obtained.

Description

technical field [0001] The invention relates to the technical field of surface processing, in particular to a gradient porous titanium mesh and a preparation method of the superhydrophobic gradient porous titanium mesh for efficient oil-water separation. Background technique [0002] With the rapid development of modern industry and offshore oil extraction, industrial sewage leakage and offshore oil leakage are becoming more and more frequent, which have caused serious harm to the water resources we depend on for survival. Dealing with oil pollution is an urgent and arduous task. Oil-water separation is a green and environmentally friendly technology that separates oil-water mixtures and realizes waste oil recycling and sewage purification and discharge. The traditional separation technology has the disadvantages of low separation efficiency, unrecoverable oil after separation, and high separation energy consumption, which cannot meet the principles of environmental protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F10/28B22F3/11C25D11/26C23C22/02B33Y80/00B33Y70/00
CPCB22F3/1103C25D11/26C23C22/02B33Y80/00B33Y70/00Y02P10/25
Inventor 孙学通林怀抒邸思金建
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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