Preparation method of 3D printing photocatalysis device

A 3D printing and photocatalysis technology, applied in the field of environmental treatment, can solve the problems of easy shedding of catalysts, difficult recycling, and high loading rate, and achieve the effect of preventing powder photocatalytic diffusion, simple and efficient preparation method, and difficult to recover.

Active Publication Date: 2019-05-14
FUJIAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the photocatalysts are powders at present, and the difficulty of recycling has become a major problem that limits their application. Deviceization is a feasible way to solve this problem.
[0003] At present, there are many methods for realizing deviceization, such as coating catalysts on the surface of various materials. CN201510118618.2 and CN201510118543.8 disclose the preparation method and coating method of two photocatalytic coating agents. This method has a higher loading rate. But it is more complex, and the immobilized catalyst is easy to fall off
There are also various photocatalytic materials that are directly melt-blended with polymer materials. This method is relatively simple, but most of the catalyst is coated inside the polymer, resulting in waste

Method used

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  • Preparation method of 3D printing photocatalysis device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) After mixing 6kg PLA and 4kg PVA, they are melted and extruded to granulate by screw. The parameters of the twin-screw extruder are: 100°C in zone 1, 110°C in zone 2, 130°C in zone 3, 140°C in zone 4, and 140°C in zone 5 150°C, 160°C in the sixth zone, 170°C in the seventh zone, 170°C in the eighth zone, 160°C in the ninth zone, 150°C at the die head, and a rotation speed of 200 rpm. Traction into 3D printing wire, the parameters of the wire machine are: 160°C in the first zone, 170°C in the second zone, 170°C in the third zone, 160°C in the fourth zone, and the speed is 50rpm. The diameter is 1.75mm, and the hole-forming wire is obtained;

[0022] (2) Pull 10kg PETG into a 3D printing wire through a wire machine. The parameters of the wire machine are: 200°C in the first zone, 210°C in the second zone, 200°C in the third zone, 200°C in the fourth zone, and the rotation speed is 50 rpm. The extruded silk is water-cooled Cooling, pulling and controlling the wire dia...

Embodiment 2

[0026] (1) Mix 7kg PLA and 3kg NaCl and then melt and extrude to granulate through the screw. The parameters of the twin-screw extruder are: 100°C in the first zone, 110°C in the second zone, 130°C in the third zone, 140°C in the fourth zone, and 140°C in the fifth zone 150°C, 160°C in the sixth zone, 170°C in the seventh zone, 170°C in the eighth zone, 160°C in the ninth zone, 150°C at the die head, and a rotation speed of 200 rpm. Traction into 3D printing wire, the parameters of the wire machine are: zone 1 160°C, zone 2 170°C, zone 3 170°C, zone 4 160°C, rotation speed 50 rpm, the extruded filament is cooled by water, and is drawn and controlled by the tractor. The diameter of the wire is 1.75mm, and the hole-forming wire is obtained;

[0027] (2) Pull 10kg PETG into a 3D printing wire through a wire machine. The parameters of the wire machine are: 200°C in the first zone, 210°C in the second zone, 200°C in the third zone, 200°C in the fourth zone, and the rotation speed i...

Embodiment 3

[0030] (1) Mix 7kg PBAT, 3kg Na 2 CO 3 After mixing, it is granulated by screw melt extrusion. The parameters of the twin-screw extruder are: 80°C in the first zone, 90°C in the second zone, 100°C in the third zone, 110°C in the fourth zone, 120°C in the fifth zone, 130°C in the sixth zone, and 130°C in the seventh zone. Zone 135°C, zone 8 130°C, zone 9 120°C, die head 110°C, rotation speed 200 rpm, extrude and granulate to obtain wire masterbatch, and pull the obtained pellets into 3D printing wire through a wire machine, wire machine parameters It is: 120°C in the first zone, 130°C in the second zone, 130°C in the third zone, 120°C in the fourth zone, the rotation speed is 50 rpm, the extruded silk is cooled by water, pulled by the tractor and controlled to control the wire diameter of 1.75mm, and the pore-forming wire;

[0031] (2) Pull 10kg of TPU into a 3D printing wire through the wire machine. The parameters of the wire machine are: 160°C in the first zone, 170°C in t...

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Abstract

The invention discloses a preparation method of a 3D printing photocatalysis device. The 3D printing photocatalysis device is prepared through the following method: preparing a pore-making wire and ahigh-light transmittance wire, printing the pore-making wire into a device frame, and printing upper and lower panels for the high-light transmittance wire, then filling a photocatalyst into the innerpart of the device, then encapsulating to obtain the 3D printing photocatalysis device. The pollutant molecule freely enters and exits through the porosity of the frame, the photocatalysis and the diffusion of a powder are prevented, the problem of difficulty in recycling is solved, the preparation method is simple, the cost is low, the device can be repeatedly used, and the photocatalysis effectis relatively good.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a method for preparing a 3D printed photocatalytic device. Background technique [0002] With the acceleration of industrialization, the problems of energy shortage and environmental pollution have become increasingly prominent. Water pollution has always been a serious environmental problem. Even trace amounts of heavy metals, dyes, and drugs in water are extremely harmful to the human body. There are many water pollution treatment methods, among which photocatalysis technology is an effective method to use new energy to solve environmental pollution problems. It uses photocatalysis to degrade toxic and harmful substances and provides a very environmentally friendly pollution control method. However, at present, most photocatalysts are in the form of powders, and the difficulty of recycling has become a major problem that limits their application, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B33Y80/00B29C48/05B29C48/92B29B9/06
Inventor 黄宝铨杨裕金陈庆华钱庆荣肖荔人夏新曙
Owner FUJIAN NORMAL UNIV
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