A kind of flexible metal powder for three-dimensional printing and its preparation method and application method

A flexible metal, three-dimensional printing technology, applied in the field of 3D printing manufacturing, to achieve the effect of excellent wear resistance

Active Publication Date: 2016-08-24
山东宏阳型材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is little research on the application of some special metal products in 3D printing, such as biocompatible medical metal stents, flexible model products, etc., which require specific metal composite powders

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Add 80 parts by weight of stainless steel powder with a particle size of less than 10 microns and 1 part by weight of an interface modifier hyperbranched poly(amide-ester) into a ball mill, and grind for 20 minutes under nitrogen protection conditions, so that the interface modifier The reactive terminal functional groups on the molecular surface activate the metal powder and increase the adhesion of the metal powder;

[0040] 2) The activated metal powder obtained in step 1), 10 parts by weight of styrene-butadiene rubber, 1 part by weight of softener methyl methacrylate, 0.2 parts by weight of anti-aging agent N-isopropyl-N'-phenyl Add phenylenediamine to a double-rotor continuous mixer with a rotor speed of 150 rpm, and knead for 10 minutes. The metal powder is completely embedded in the rubber body with a mesh; then add 2 parts by weight of zinc oxide and 0.05 parts by weight of an accelerator M, mixing for 3 minutes;

[0041] 3) The mixed material obtained in ste...

Embodiment 2

[0045] 1) Add 60 parts by weight of aluminum powder with a particle size of less than 10 microns, 25 parts by weight of zinc powder, and 1 part by weight of interface modifier hyperbranched poly(amide-ester) into a ball mill, and grind for 25 minutes under nitrogen protection , so that the reactive terminal functional groups on the surface of the interface modifier molecules activate the metal powder and increase the adhesion of the metal powder;

[0046] 2) The activated metal powder obtained in step 1), 10 parts by weight of butadiene rubber, 2 parts by weight of softener propyl methacrylate, 0.3 parts by weight of anti-aging agent N-isopropyl-N'-phenyl Add phenylenediamine to the double-rotor continuous mixer, the rotor speed is 200 rpm, knead for 5 minutes, the metal powder is completely embedded in the rubber body with mesh; then add 2 parts by weight of magnesium oxide, 0.08 parts by weight of accelerator DM, knead for 2 minutes;

[0047] 3) The mixed material obtained ...

Embodiment 3

[0051] 1) Add 50 parts by weight of copper powder with a particle size of less than 10 microns, 35 parts by weight of silver powder, and 2 parts by weight of interface modifier hyperbranched poly(amide-ester) into a ball mill, and grind for 30 minutes under nitrogen protection. In this way, the reactive terminal functional groups on the surface of the interface modifier molecules can activate the metal powder and increase the adhesion of the metal powder;

[0052] 2) Combine the activated metal powder obtained in step 1), 10 parts by weight of isoprene rubber, 3 parts by weight of softener hexyl methacrylate, -0.5 parts by weight of anti-aging agent N-isopropyl-N'-phenyl P-phenylenediamine was added to a double-rotor continuous mixer with a rotor speed of 200 rpm, and kneaded for 10 minutes. The metal powder was completely embedded in the rubber body with a mesh; Agent CZ, mixed for 3 minutes;

[0053] 3) The mixed material obtained in step 2) is directly heated and fed into ...

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Abstract

A flexible metal powder for three-dimensional printing, characterized in that it is mainly composed of metal powder embedded in a rubber body with a network structure, and is prepared from the following raw materials in parts by weight: 80-85 parts of metal powder, rubber body 10-15 parts, 2-3 parts of metal oxide, 1-3 parts of softener, 1-2 parts of interface modifier, 0.2-0.5 parts of anti-aging agent, 0.05-0.1 part of accelerator; Powder adhesion, using a double-rotor continuous mixer with longitudinal meshing and transverse stretching, the metal powder is completely embedded in the rubber body with a network, and the flexibility of the rubber body network is obtained by extrusion granulation and colloid grinding machine. metal powder. Flexible metal powder can be used to obtain green metal products through three-dimensional printing, and flexible metal products with excellent strength, flexibility and wear resistance can be obtained through thermal cross-linking treatment. It can be used to 3D print flanges, connectors, architectural models, etc. of special structures.

Description

technical field [0001] The invention belongs to the field of 3D printing manufacturing, and in particular relates to a flexible metal powder used in 3D printing manufacturing, and further relates to a preparation method of the flexible metal powder. Background technique [0002] The reason why the 3D printing manufacturing technology of metal materials is difficult is that the melting point of metal is relatively high, which involves various physical processes such as solid-liquid phase transition of metal, surface diffusion and heat conduction. In addition, whether the generated crystal structure is good, whether the entire test piece is uniform, internal impurities and the size of pores, etc. will cause changes in the properties of 3D printed metal products. In order to solve these problems, on the one hand, the printing process is improved, such as the power and energy distribution of the laser, the moving speed and path of the laser focus point, the feeding speed, the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B33Y70/00B33Y40/00
CPCB22F1/00C08L7/00
Inventor 陈庆曾军堂
Owner 山东宏阳型材科技股份有限公司
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