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Preparation and molding method of colored nylon powder material for selective laser sintering

A nylon powder and laser sintering technology, which is applied in the field of additive manufacturing, can solve problems such as the inability to achieve two or more colors, single color of the workpiece, and printing, so as to save cost and time, simplify the preparation process, and reduce costs. Effect

Active Publication Date: 2020-11-10
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 a colored nylon powder material for selective laser sintering, which is characterized in that it comprises the following steps:

[0029] (1) Water-soluble dyes of red, yellow and blue primary colors are respectively added into water, heated and stirred until fully dissolved to obtain dye solutions of red, yellow and blue primary colors;

[0030] (2) Add the nylon powder used for selective laser sintering into the dye solution of the three primary colors of red, yellow, and blue respectively, heat and stir, 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 solution;

[0031] (3) The nylon powder mixed dye solution of red, yellow and blue three primary colors is suction-filtered and dried respectively, and the nylon powder material of red, yellow and blue three primary colors for selecti...

example 1

[0052] (1) Take 60g of red Lanna free and easy dye, pour it into 12kg of water respectively, heat and stir to fully dissolve the dye, 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 stirring while heating for 1 hour, filter the powder with suction, put it in an oven, and dry it at 80° C. for 6 hours to obtain red nylon 12 powder. Take 60 g of blue Lanner free and easy dye and repeat the above steps to obtain blue nylon 12 powder.

[0053] (2) Put the obtained red and blue powders into different feeding ports, so as to adjust the color ratio at any time for color matching and printing.

[0054] (3) According to the required color of the workpiece, red nylon powder and blue nylon powder are fed at 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 unde...

example 2

[0057] (1) Take 60g of yellow Lanna free and easy dye, pour it into 12kg of water respectively, heat and stir to fully dissolve the dye, 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 stirring while heating for 1 hour, filter the powder with suction, put it in an oven, and dry it at 80° C. for 6 hours to obtain yellow nylon 12 powder. Take 60 g of blue Lanner 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, so as to adjust the color ratio at any time for color matching and printing.

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

[0060] (4) The powder material...

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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 in particular relates to the preparation and molding method of 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. Establish a digital description model based on the combination information of structure, structure and selected materials, and then output this information to the computer-controlled electromechanical integrated manufacturing system for point-by-point, line-by-line, and surface-by-surface three-dimensional stacking to produce three-dimensional entities. Compared with the traditional subtractive manufacturing processing technology, the additiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/314B29C64/321B29C64/153B33Y40/00B33Y40/10
CPCB29C64/153B29C64/314B29C64/321B33Y40/00
Inventor 侯帅罗秋帆苏婷
Owner HUNAN FARSOON HIGH TECH CO LTD
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