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3D printing powder and preparation method thereof

A 3D printing and powder technology, applied in additive processing and other directions, can solve the problem of difficult to achieve uniform dispersion of antioxidants in 3D printing powder, and achieve the effect of excellent antioxidant performance, smooth parts, and uniform particle size.

Active Publication Date: 2020-11-20
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, it is difficult to achieve uniform dispersion of antioxidants in 3D printing powders

Method used

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  • 3D printing powder and preparation method thereof
  • 3D printing powder and preparation method thereof
  • 3D printing powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Add 100g of polyamide waste PA12 into the compound solvent (100g of phenol / 200g of toluene), heat to a temperature of 80°C and stir until dissolved, then add 10g of activated carbon, keep stirring for 0.5 hours, cool down to 40°C and filter to obtain a clear solution of polyamide ; 0.8g antioxidant 1 is added in polyamide clarified solution, is stirred to fully dissolving, obtains functional polyamide solution; Then functional polyamide solution is sprayed into 4000g deionized water with spray mode (deionized water temperature maintains 0 -10°C), the polyamide 3D printing powder was precipitated; weighed after drying, and then tested other properties.

Embodiment 2

[0079] The difference between embodiment 2 and embodiment 1 is that antioxidant 3 is added together with activated carbon.

Embodiment 3

[0081] The difference between embodiment 3 and embodiment 1 is that the antioxidant is 4.

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Abstract

The invention provides antioxidant function modified 3D printing powder, which comprises the following components in parts by weight: 100 parts of a polyamide resin and 0.1 to 3 parts of an antioxidant, wherein the antioxidant is dispersed in the polyamide resin matrix in a form of being less than 10 microns, and the 3D printing powder is uniform in particle size distribution, good in fluidity andproper in stacking density. The 3D printing powder disclosed by the invention is prepared by the following method: dissolving resins of a polyamide new material, a polyamide waste material and a polyamide recycled material in a compound solvent system taking phenol / methylbenzene as a main component; and decolorizing (the step required for treating polyamide waste), filtering and purifying to obtain a polyamide clarified solution, adding an antioxidant which can be dissolved in the compound solvent into the polyamide clarified solution to fully dissolve the antioxidant, and finally spraying the solution into deionized water by a spraying method to obtain the 3D printing powder with regular particles, uniform particle size and good fluidity.

Description

technical field [0001] The invention relates to the technical field of green polymer materials, in particular to a 3D printing powder and a preparation method thereof. Background technique [0002] Compared with traditional technology, 3D printing technology has strong designability, simple process and low energy consumption. It is suitable for customized production and can greatly shorten the production cycle from design to parts. fields are widely used. For different application fields, 3D printing powders of different material types have been developed. Among polymer 3D printing powder materials, the research and application of polyamide 3D printing powder is one of the important research fields. [0003] At present, the method of preparing polyamide 3D printing powder is mainly cryogenic pulverization combined with grinding method. Patent CN107151441A, patent CN108017905A and other patents use the cryogenic crushing method to crush polyamide granules to obtain polyami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08K5/00B33Y70/10
CPCC08K5/005B33Y70/10C08L2207/20C08L77/00C08L77/02C08L77/06
Inventor 叶南飚常欢唐磊李成周沃华刘鑫鑫朱秀梅苏榆钧曹绍强黄险波
Owner KINGFA SCI & TECH CO LTD
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