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Preparation method of polyethersulfone powder consumables for laser sintering forming 3D printing

A 3D printing and laser sintering technology, applied in additive processing and other directions, can solve problems such as increasing costs, and achieve the effects of saving production costs, shortening drying cycles, and uniform particle size

Active Publication Date: 2018-08-21
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Repeated sieving and crushing increase the cost, so it is necessary to develop a method for preparing polyethersulfone powder consumables, so that after cryogenic crushing, the crushed powder is subjected to another grinding and drying process to prepare a polyethersulfone powder suitable for 3D High temperature resistance of printing technology, good compatibility with impregnating resin, uniform particle size, no need to add binder polyethersulfone consumables, can be easily and quickly formed into precision, special-shaped, complex, high mechanical strength, stable size Parts with good performance, and can be used to prepare many parts of today's unmanned aircraft, micro robots, such as micro gears, micro crankshafts, micro connecting rods

Method used

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  • Preparation method of polyethersulfone powder consumables for laser sintering forming 3D printing
  • Preparation method of polyethersulfone powder consumables for laser sintering forming 3D printing

Examples

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preparation example Construction

[0025] The invention provides a preparation method of laser sintering forming 3D printing polyethersulfone powder consumables, comprising the following steps:

[0026] (1) Put the polyethersulfone into the silo of the low-temperature pulverizer, and use the liquid nitrogen built in the silo to cool the polyethersulfone to -130°C~-196°C";

[0027] (2) Pulverizing the cooled polyethersulfone in step (1), the pulverization temperature is -110°C to -196°C to obtain primary polyethersulfone powder;

[0028] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and start drying at 100°C with a gradient temperature rise. After ℃, dry at constant temperature for 0.5h~2h;

[0029] (4) Add the pulverized powder in the step (3) into a grinder, and fully grind to obtain a crude polyethersulfone product;

[0030] (5) Dry the crude polyethersulfone product in step (4) at 100°C with a gradient temperature rise and a temperature rise fr...

Embodiment 1

[0045] A preparation method for polyethersulfone powder consumables for laser sintering forming 3D printing, comprising the following steps:

[0046] (1) Put 10g of polyethersulfone into the cooling chamber from the upper part and move it downward; add liquid nitrogen from the bottom and move it up, reverse the immersion cooling, and cool the material to -196°C for 3 hours;

[0047] (2) The polyethersulfone cooled in step (1) is pulverized by a vibrating ball mill at a pulverization temperature of -196°C for 1.5 hours to obtain primary polyethersulfone powder;

[0048] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 100°C. The heating frequency is 5°C / min. After heating up to 130°C, it is dried at a constant temperature for 2 hours. ;

[0049] (4) Add the pulverized powder in step (3) into a grinder, and grind for 2 hours under the condition of sufficient grinding at 14...

Embodiment 2

[0052] A preparation method for polyethersulfone powder consumables for laser sintering forming 3D printing, comprising the following steps:

[0053] (1) Put 10g of polyethersulfone into the cooling bin from the upper part and move it downward; add liquid nitrogen from the bottom and move it up, and reverse the immersion cooling, and cool the material to -180°C for 3.5 hours;

[0054] (2) The cooled polyethersulfone in step (1) is pulverized by a vibrating ball mill at a pulverization temperature of -180°C for 1.5 hours to obtain primary polyethersulfone powder;

[0055] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 100°C. The heating frequency is 5°C / min. After heating up to 130°C, it is dried at a constant temperature for 2 hours. ;

[0056] (4) Add the pulverized powder in step (3) into a grinder, and grind for 1.8 hours under the condition of sufficient grinding a...

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Abstract

The invention provides a preparation method of polyethersulfone powder consumables for laser sintering and forming 3D printing, which comprises the following steps: (1) placing polyethersulfone into a silo in a low-temperature pulverizer, and the liquid contained in the silo Nitrogen is used to cool polyethersulfone to -130°C to -196°C; (2) pulverize the cooled polyethersulfone in step (1) at a pulverization temperature of -110°C to -196°C to obtain polyethersulfone primary powder; (3) After sieving the primary polyethersulfone powder in step (2), it is dried at a gradient temperature starting at 100°C, with a heating frequency of 2°C / min to 8°C / min, and then heated to 130°C and then dried at a constant temperature for 0.5h ~2h; (4) Put the pulverized powder in step (3) into a grinder, and grind it sufficiently to obtain the crude polyethersulfone product; (5) Gradiently raise the temperature of the crude polyethersulfone product in step (4) at 100°C Drying, the heating frequency is 2°C / min to 8°C / min, and after the temperature is raised to 150°C, it is dried at a constant temperature for 0.5h to 1h to obtain laser sintering molding 3D printing polyethersulfone powder consumables.

Description

technical field [0001] The invention relates to the field of rapid prototyping, more specifically, the invention relates to a preparation method of laser sintering forming 3D printing polyethersulfone powder consumables. Background technique [0002] As an emerging material processing and molding technology, 3D printing technology has become one of the important symbols of the third industrial revolution. 3D printing originated from the late 1970s to the early 1980s. Its key technical advantage is the use of digital means to quickly manufacture complex structural products of different materials. It can be applied to some high-precision advanced manufacturing fields, and the process is energy-saving and material-saving. . Traditional subtractive manufacturing technology generally uses methods such as cutting, grinding, corrosion and melting to obtain products of specific shapes, and then assembles and welds them to form products. The production cycle is long, the process is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08L81/06B33Y70/00
CPCB33Y70/00C08J3/12C08J2381/06C08L81/06
Inventor 侯豪情刘书武李春根李永红
Owner JIANGXI NORMAL UNIV
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