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Preparation method of polyimide powder consumable material for laser sintering forming 3D printing

A technology of polyimide powder and 3D printing, which is applied in the field of laser sintering and forming 3D printing polyimide powder consumables to achieve good compatibility, shorten drying cycle, and uniform particle size

Active Publication Date: 2017-02-22
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obtain laser sintering molding 3D printing polyimide powder consumables

Method used

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Examples

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Effect test

preparation example Construction

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

[0026] (1) Put the polyimide into a high-speed mixer, start drying at 110°C with a gradient temperature rise, the temperature rise frequency is 2°C / min-8°C / min, and finally stabilize at 150°C, and dry for 0.5h;

[0027] (2) Add the polyimide dried in step (1) into a grinder, and grind for 1h to 2h under the condition of 320r / min to obtain a crude polyimide product;

[0028] (3) The crude polyimide product in step (2) is dried at 100°C with a gradient temperature rise, the temperature rise frequency is 2°C / min-8°C / min, and finally stabilized at 150°C, dried for 0.5h to obtain a laser sintered shape 3D printing polyimide powder consumables.

[0029] Selective Laser Sintering Technology

[0030] Selective Laser Sintering technology (Selective Laser Sintering) is an important branch of rapid prototyping technology, which in...

Embodiment 1

[0051] A preparation method for polyimide powder consumables for laser sintering forming 3D printing, comprising the following steps:

[0052] (1) Put the polyimide into a high-speed mixer, start drying at 110°C with gradient temperature rise, the temperature rise frequency is 2°C / min, and finally stabilize at 150°C, and dry for 0.5h;

[0053] (2) Add the polyimide dried in step (1) into a grinder, and grind for 2 hours under the condition of 320r / min to obtain a crude polyimide product;

[0054] (3) The crude polyimide product in step (2) was dried at 100°C with gradient temperature rise, the temperature rise frequency was 2°C / min, and finally stabilized at 150°C, and dried for 0.5h. Obtain laser sintering molding 3D printing polyimide powder consumables.

[0055] The preparation method of described polyimide, comprises the following steps:

[0056] (1) Weigh 0.04mol of 3,3'-(m-phenylenedioxy)bis(phthalic anhydride) and add it to 0.02mol of p-phenylenediamine and 0.02mol o...

Embodiment 2

[0065] A preparation method for polyimide powder consumables for laser sintering forming 3D printing, comprising the following steps:

[0066] (1) Put the polyimide into a high-speed mixer, start drying at 120°C with gradient temperature rise, the temperature rise frequency is 4°C / min, and finally stabilize at 150°C, and dry for 0.5h;

[0067] (2) Add the polyimide dried in step (1) into a grinder, and grind for 1.5 h under the condition of 320r / min to obtain a crude polyimide product;

[0068] (3) The crude polyimide product in step (2) was dried at 110°C with gradient temperature rise, the temperature rise frequency was 4°C / min, and finally stabilized at 150°C, and dried for 0.5h. Obtain laser sintering molding 3D printing polyimide powder consumables.

[0069] The preparation method of the polyimide is the same as in Example 1, except that the diamine monomer is 1,4-bis(2-cyano-4-aminophenoxy)benzene.

[0070] The synthesis method of the 3,3'-(m-phenylenedioxy)bis(phthali...

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Abstract

The invention provides a preparation method of a polyimide powder consumable material for laser sintering forming 3D printing. The preparation method comprises the following steps: (1) putting polyimide in a high-speed mixer, heating up from 110 DEG C in a gradient manner for drying, wherein the heating frequency is 2 DEG C / min-8 DEG C / min, and the temperature is finally stabilized at 150 DEG C for drying for 0.5h; (2) adding the polyimide dried in the step (1) into a grinder and grinding for 1h-2h under the condition of 320r / min to obtain a polyimide crude product; and (3) heating up the polyimide crude product in the step (2) from 100 DEG C in a gradient manner for drying, wherein the heating frequency is 2 DEG C / min-8 DEG C / min, and the temperature is finally stabilized at 150 DEG C for drying for 0.5h to obtain the polyimide powder consumable material for laser sintering molding 3D printing. By adopting the drying-grinding-drying process, the obtained polyimide powder consumable material has good compatibility with impregnating resin, uniform particle size and no need of addition of adhesives.

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 polyimide 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 complic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08L79/08C08G73/10
CPCC08G73/1085C08J3/12C08J2379/08
Inventor 侯豪情于颖李振凯李春根
Owner JIANGXI NORMAL UNIV
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