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

A 3D printing and laser sintering technology, applied in the direction of additive processing, etc., can solve the problems of increasing costs and achieve the effects of saving production costs, good compatibility and simple process

Active Publication Date: 2018-08-21
JIANGXI NORMAL UNIV
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  • 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 polyetherketone powder consumables, so that after cryogenic crushing, the crushed powder is ground and dried again to prepare a polyetherketone powder suitable for 3D printing technology. High temperature resistance, good compatibility with impregnated resin, uniform particle size, no need to add binder polyetherketone consumables, can be easily and quickly formed into precision, special-shaped, complex, high mechanical strength, good dimensional stability Components, 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 polyetherketone 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 polyether ketone powder consumables, comprising the following steps:

[0026] (1) Put the polyether ketone into the silo of the low-temperature pulverizer, and use the liquid nitrogen built in the silo to cool the polyether ketone to -150°C ~ -196°C";

[0027] (2) Pulverizing the cooled polyetherketone in step (1), the pulverization temperature is -140°C to -196°C to obtain primary polyetherketone powder;

[0028] (3) After sieving the primary polyether ketone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 90°C. After ℃, dry at constant temperature for 0.5h~2h;

[0029] (4) adding the pulverized powder in step (3) into a grinder, and fully grinding to obtain a crude polyetherketone product;

[0030] (5) Dry the crude polyether ketone product in step (4) at 90°C with a gradient temperature rise rate of 2°C / min to 8°C / min, then...

Embodiment 1

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

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

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

[0048] (3) After sieving the primary polyetherketone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 90°C, with a heating frequency of 5°C / min, and then heat it up to 120°C and then dry it 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 su...

Embodiment 2

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

[0053] (1) Add 10g of polyether ketone into the cooling chamber from the upper part and move it downward; add liquid nitrogen from the bottom and move it upwards, reverse the immersion cooling, and cool the material to -180°C for 4 hours;

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

[0055] (3) After sieving the primary polyetherketone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 90°C, with a heating frequency of 5°C / min, and then heat it up to 120°C and then dry it 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 grindi...

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Abstract

The present invention provides a preparation method of polyether ketone powder consumables for laser sintering forming 3D printing, comprising the following steps: (1) placing polyether ketone into a silo in a low-temperature pulverizer, and the liquid contained in the silo Nitrogen is used to cool the polyetherketone to -150°C to -196°C; (2) pulverize the cooled polyetherketone in step (1) at a pulverization temperature of -140°C to -196°C to obtain polyetherketone powder; (3) After sieving the primary powder of polyether ketone in step (2), the temperature is gradually increased to dry at 90°C, the temperature increase frequency is 2°C / min-8°C / min, and the temperature is raised to 120°C and then dried at a constant temperature for 0.5h ~2h; (4) Put the pulverized powder in step (3) into the grinder, and grind it sufficiently to obtain the crude polyetherketone product; (5) Gradiently raise the temperature of the crude polyetherketone product in step (4) at 90°C Drying, the heating frequency is 2°C / min to 8°C / min, and after the temperature is raised to 120°C, it is dried at a constant temperature for 0.5h to 1h to obtain laser sintering molding 3D printing polyetherketone 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 polyetherketone 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 c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08L71/10B33Y70/00
CPCB33Y70/00C08J3/12C08J2371/10C08L71/00
Inventor 侯豪情张春武李永红李春根
Owner JIANGXI NORMAL UNIV
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