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Preparation and shaping method of colorful nylon powder material used for selective laser sintering

A nylon powder and laser sintering technology, which is applied in the field of additive manufacturing, can solve the problems of printing, single color of the workpiece, and the inability to realize two or more colors, and achieve cost reduction, simple preparation process, and cost and time saving. Effect

Active Publication Date: 2019-01-04
HUNAN FARSOON HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are limited printing machines on the market that can realize color 3D printing, mainly desktop printers based on FDM technology. Industrial 3D printers based on SLS technology have a single color of the workpiece, and can only print a single color workpiece, and cannot achieve two or more colors. Print

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] In order to solve the above technical problems, the present invention provides a method for preparing colored nylon powder material for selective laser sintering, which is characterized in that it includes the following steps:

[0029] (1) Add the water-soluble dyes of the three primary colors of red, yellow and blue to water respectively, heat and stir until they are fully dissolved to prepare the dye solutions of the three primary colors of red, yellow and blue;

[0030] (2) The nylon powder used for selective laser sintering is added to the dye solution of the three primary colors of red, yellow and blue, heated and stirred, so that the nylon powder is fully dyed, and the nylon of the three primary colors of red, yellow and blue is obtained. Powder mixed dye liquor;

[0031] (3) The nylon powder mixed dye liquor of the three primary colors of red, yellow and blue is suction filtered and dried to prepare the nylon powder material of the three primary colors of red, yellow an...

example 1

[0052] (1) Take 60g of red Lanna free and easy dyes, pour them into 12kg of water, heat and stir to fully dissolve the dyes, and make the water temperature reach or close to the boiling point, weigh 3kg of nylon 12 powder, and add it to the dye solution that has fully dissolved the dye. , Keep heating and continue to stir for 1 hour, suction filter the powder, put it in an oven, and dry at 80°C for 6 hours to obtain red nylon 12 powder. Take 60 g of blue Lanna free and easy dye and repeat the above steps to obtain blue nylon 12 powder.

[0053] (2) Put the obtained red and blue powder into different feeding ports to facilitate adjustment of the color ratio for color mixing and printing at any time.

[0054] (3) According to the required color of the workpiece, the red nylon powder and the blue nylon powder are fed in a ratio of 1:1.5 during printing, and purple nylon powder can be obtained in the upper powder feeding screw.

[0055] (4) The powder material is laser sintered under th...

example 2

[0057] (1) Take 60g of yellow Lanna free and easy dyes, pour them into 12kg of water, heat and stir to fully dissolve the dyes, and bring the water temperature to or close to the boiling point, weigh 3kg of nylon 12 powder, and add it to the dye solution that has fully dissolved the dye. , While keeping heating, continue to stir for 1 hour, suction filter the powder, put it in an oven and dry at 80°C for 6 hours to obtain yellow nylon 12 powder. Take 60 g of blue Lanna free and easy dye and repeat the above steps to obtain blue nylon 12 powder.

[0058] (2) Put the obtained yellow and blue powders into different feeding ports to facilitate adjustment of the color ratio for toning and printing at any time.

[0059] (3) According to the required color of the workpiece, the yellow nylon powder and the blue nylon powder are fed in a ratio of 1:0.7 during printing, and green nylon powder can be obtained in the upper powder feeding screw.

[0060] (4) The powder material is laser sintered...

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Abstract

The invention provides a preparation method of a colorful nylon powder material used for selectivity laser sintering. The method comprises the steps that water-soluble dyes of three primary color of red, yellow and blue are added to water respectively, heated and stirred until the dyes are completely dissolved to prepare red yellow and blue three primary color dye solutions; nylon powder which isused for selective laser sintering is added to the dye solutions respectively, heated and stirred to allow the nylon powder to be thoroughly dyed to prepare two or three nylon powder mixed dye liquidof three primary colors of red, yellow and blue; the nylon powder mixed dye solution liquid of the three primary colors of red, yellow and blue are sucked, infiltrated and dried to prepare the nylon powder material of three primary colors of red, yellow and blue used for selective laser sintering; the nylon powder material of three primary colors of red, yellow and blue used for selective laser sintering are mixed according to proportioning to prepare a colorful nylon powder material used for SLS. The invention provides a solution scheme capable of simultaneously conducting 3D printing of multiple colors.

Description

Technical field [0001] The invention belongs to the technical field of additive manufacturing, and specifically relates to a method for preparing and forming a colored nylon powder material for selective laser sintering. Background technique [0002] 3D printing technology is a general term for additive manufacturing technology. It is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. It can transform the geometry of the prototype The combined information of, structure and selected materials establishes a digital description model, and then outputs this information to a computer-controlled electromechanical integrated manufacturing system for point-by-point, line-by-line, and face-by-face three-dimensional stacking to produce three-dimensional entities. Compared with traditional subtractive manufacturing and processing technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/314B29C64/321B29C64/153B33Y40/00
CPCB29C64/153B29C64/314B29C64/321B33Y40/00
Inventor 侯帅罗秋帆苏婷
Owner HUNAN FARSOON HIGH TECH CO LTD
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