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3D printing composite material with SEBS wrapping metal tungsten and preparation method thereof

A composite material, 3D printing technology, applied in metal processing equipment, nanotechnology for materials and surface science, additive processing, etc., can solve the problems of good radiation absorption characteristics of lead, toxicity offset, product weight, etc. The effect of good effect, good ball shape, excellent mechanical strength and hardness

Inactive Publication Date: 2018-12-18
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Metallic lead is generally added to these materials in order to absorb X-ray radiation; however, the good radiation absorbing properties of lead are unfavorably offset by its toxicity and the resulting products are heavy

Method used

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  • 3D printing composite material with SEBS wrapping metal tungsten and preparation method thereof

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with specific embodiments.

[0027] The SEBS-coated tungsten 3D printing composite material of the present invention is a spherical or near-spherical composite powder material with radiation protection functional powder coated with metal tungsten by SEBS; the SEBS raw material is selected as a high-molecular-weight star-shaped structure.

[0028] The composite material is prepared from the following raw materials: 30 parts of thermoplastic elastomer SEBS, 70 parts of nano-tungsten powder, and solvent acetone. The total weight component of SEBS and tungsten powder fusion coating is 100.

[0029] The thermoplastic elastomer SEBS is selected as Baling Petrochemical SEBS model YH-602T.

[0030] Nano-tungsten powder is nano-sized tungsten powder with good sphericity produced by plasma vapor phase evaporation method, with an average particle size of 0.2 μm.

[0031] The preparation process is as ...

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Abstract

The invention discloses a 3D printing composite material with SEBS wrapping metal tungsten and a preparation method thereof. According to the preparation method, SEBS is heated to a molten state in aplanetary spiral stirrer, then tungsten powder is fed at a certain rate to be sufficiently stirred together with the molten SEBS, the obtained SEBS and tungsten powder mixed solution is transferred into a high-pressure gas atomization device to be divided into small liquid drop sediments to be cooled, condensed and collected, finally, the obtained primary powder material is dried and then added into a pulverizer to form powder, and thus the 3D printing composite material with the SEBS wrapping the tungsten powder is obtained. The prepared composite material is a spherical powder material witha thermoplastic elastomer wrapping the tungsten powder, the dry current performance is excellent, the flexibility is high, the wrapping effect is good, the material is suitable for SLS to prepare formed parts, and printed products have the radiation shield protection function.

Description

technical field [0001] The invention belongs to the technical field of 3D printing material preparation, and in particular relates to a 3D printing composite material with SEBS coated metal tungsten and a preparation method thereof. Background technique [0002] Selective Laser Sintering (SLS) technology is a new material forming process based on the discrete / stacking principle developed in the mid-1990s. It integrates the latest achievements in the fields of CAD / CAM, numerical control technology, laser processing technology and material science, and can automatically and quickly transform design ideas into parts with certain structures and functions. This technology has a series of advantages such as no need for tools in the forming process, insensitivity to product complexity, and fast product development. The use of SLS to realize the rapid manufacture of polymer functional parts with complex shapes is not limited by the complexity of the parts, and the manufacturing eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B33Y70/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B33Y70/00B22F1/102B22F1/054
Inventor 杨永强肖云绵付凡李阳
Owner SOUTH CHINA UNIV OF TECH
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