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A method for additively manufacturing three-dimensional titanium dioxide photocatalytic materials

A technology of photocatalytic materials and titanium dioxide, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, manufacturing tools, etc., can solve the problems of low forming precision and inability to prepare three-dimensional titanium dioxide, and achieve high forming precision and high The effect of design freedom and convenient operation

Active Publication Date: 2020-07-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention adopts laser selective sintering and photocuring technology to prepare three-dimensional titanium dioxide photocatalytic material, which solves the technical problem that the three-dimensional titanium dioxide preparation method in the prior art has low molding precision and cannot prepare three-dimensional titanium dioxide with complex structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Select TiO with a particle size of 10nm 2 Powder, nylon 6 pellets as raw material, TiO 2The powder was compounded with nylon 6 at a mass fraction of 5%, and the composite powder suitable for laser selective sintering additive manufacturing technology was prepared by solvent precipitation method. Firstly, the selected TiO 2 Weigh the powder and nylon 6 pellets in proportion, disperse them in an alcohol solvent, and then place them in a reaction kettle, heat the reaction kettle to 180°C, keep it warm for 2 hours, then cool it down to room temperature naturally, take out the sample, and dry it at 80°C for 10 hours after suction filtration , making TiO 2 / Nylon 6 composite powder.

[0031] The TiO prepared by laser selective sintering equipment 2 / Nylon 6 composite powder is sintered and formed, and the sintering parameters are as follows: the thickness of the powder layer is 150 μm, the laser power is 20 W, the scanning speed is 1500 mm / S, and the scanning distanc...

Embodiment 2

[0033] Select TiO with a particle size of 100nm 2 Powder, nylon 12 powder with an average particle size of 30 μm as raw material, TiO 2 The powder is compounded with nylon 12 at a mass fraction of 30%, and the composite powder suitable for laser selective sintering additive manufacturing technology is prepared by ball milling mechanical mixing method. Firstly, the selected TiO 2 Powder and nylon 12 pellets are weighed in proportion, according to the mass ratio of 5:10 (composite powder: ZrO 2 Grinding ball) ratio, add in the ball mill tank and carry out ball milling. The ball milling process is completed on a planetary ball mill, the ball milling speed V=300r / min, and the ball milling time t=4h. After ball milling, the samples were taken out and dried at 80°C for 10 hours to obtain TiO 2 / Nylon 12 composite powder.

[0034] The TiO prepared by laser selective sintering equipment 2 / Nylon 12 composite powder is sintered and formed, and the sintering parameters are as fol...

Embodiment 3

[0036] Select TiO with a particle size of 50nm 2 Powder, acrylate photosensitive resin as raw material, TiO 2 The powder is mixed with acrylate photosensitive resin at a mass fraction of 10%, and the composite powder suitable for light-curing additive manufacturing technology is prepared by ball milling method. Firstly, the selected TiO 2 Powder and acrylic photosensitive resin are weighed in proportion, according to the mass ratio of 5:10 (raw material: ZrO 2 Grinding ball) ratio, add in the ball mill tank and carry out ball milling. The ball milling process is completed on a planetary ball mill, the ball milling speed V=500r / min, and the ball milling time t=4h. After ball milling, take out TiO 2 / Photosensitive resin composite slurry.

[0037] The TiO prepared by photocuring equipment 2 / Photosensitive resin composite slurry is solidified and formed, the parameters are laser wavelength 405nm, power 200mW, single layer thickness 100μm, scanning speed 2000mm / S, and scan...

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Abstract

The invention discloses a method for additively manufacturing three-dimensional titanium dioxide photocatalytic materials, and belongs to the field of environmental functional material preparation and application. The additive manufacturing of 3D TiO 2 Photocatalytic material methods include selecting TiO of a certain particle size 2 Particles and resin materials, TiO is prepared by solvent precipitation or mechanical mixing. 2 Composite resin powder, and then use laser selective sintering to prepare ceramic body; or use mechanical mixing method to prepare TiO 2 Composite photosensitive resin slurry is then formed using light curing technology to prepare a ceramic embryonic body. The prepared green body is debonded and calcined to finally prepare three-dimensional TiO 2 Photocatalytic materials. This invention uses additive manufacturing technology to prepare three-dimensional TiO 2 Photocatalytic materials can design and manufacture complex structure three-dimensional TiO according to the actual use requirements of the material. 2 Photocatalytic material, prepared three-dimensional TiO 2 Photocatalytic materials have the advantages of large specific surface area and high photocatalytic efficiency.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology and material preparation, and more specifically relates to a method for additively manufacturing a three-dimensional titanium dioxide photocatalytic material. Background technique [0002] Additive Manufacturing technology (Additive Manufacturing, AM) through computer-aided design and manufacturing, based on the principle of layered superposition, directly forms powder materials into three-dimensional solid materials with arbitrary complex structures, making it possible to design and prepare complex structural ceramic materials. Additive manufacturing technology has been used in the processing and manufacturing of ceramics, polymer materials, metals and various composite material models and parts. The processing method is not affected by the complexity of the formed parts, and the forming efficiency is high. It has been widely used in industry, In the fields of medicine, handicraft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J37/34B29C64/135B33Y10/00
CPCB01J21/063B01J37/349B29C64/135B33Y10/00B01J35/39
Inventor 闫春泽李昭青刘主峰陈鹏杨磊伍宏志史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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