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Additive manufacturing method for manufacturing three-dimensional objects using selective laser sintering

A kind of additive manufacturing and selective technology, applied in the direction of solid material additive processing, processing and manufacturing, manufacturing tools, etc., can solve problems such as consumption and more energy

Pending Publication Date: 2022-03-18
SOLVAY SPECIALTY POLYMERS USA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, higher power sources consume more energy

Method used

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  • Additive manufacturing method for manufacturing three-dimensional objects using selective laser sintering
  • Additive manufacturing method for manufacturing three-dimensional objects using selective laser sintering
  • Additive manufacturing method for manufacturing three-dimensional objects using selective laser sintering

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0265] Example 1c is comparative and does not satisfy inequality (4).

example 2

[0266] Example 2 is inventive and satisfies all inequalities (1)-(4).

example 3

[0267] Example 3c is comparative and does not satisfy inequalities (2) and (3).

[0268] The same magnitude of tensile strength was achieved when the part bed temperature was decreased from 273°C to 200°C (E2 vs. E1c). The MFI change (or ΔMFI) of the inventive example E2 is significantly lower compared to the comparative example E1c, which means that the MFI is preserved when the thermal conditions of the inventive method are applied. The deagglomeration of the unsintered powder after printing was easier when printing was performed under the thermal conditions of the inventive example E2. In addition, the unsintered powder has a better appearance (light brown vs. dark brown). Reducing the temperature (Tb) of the part bed not only has a beneficial effect on the PPS stability, lifetime, and recyclability of the PPS material, but also reduces the energy consumption during the printing process and preserves the mechanical properties of the printed objects.

[0269] However, Comp...

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Abstract

The present disclosure relates to an additive manufacturing (AM) method for manufacturing a three-dimensional (3D) object using a powdered polymeric material (M) comprising at least one semi-crystalline polymer or copolymer (P), in particular to a 3D object obtainable from such powdered polymeric material (M) by laser sintering.

Description

technical field [0001] The present disclosure relates to an additive manufacturing (AM) method for manufacturing three-dimensional (3D) objects using a powdered polymer material (M) comprising at least one semi-crystalline polymer or copolymer (P), in particular to a 3D objects obtainable from this powdered polymer material (M) by laser sintering. Background technique [0002] Additive manufacturing systems are used to print or otherwise build 3D objects from digital blueprints created with computer-aided design (CAD) modeling software. Selective laser sintering ("SLS"), one of the additive manufacturing techniques available, uses electromagnetic radiation from a laser to fuse powdered material into a block. The laser selectively fuses the powdered material by scanning a cross-section generated from a digital blueprint of the object across the surface of the powder bed. After scanning the section, the powder bed is reduced by one layer thickness, a new layer of material is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/357B33Y10/00B33Y80/00B33Y70/00B33Y40/00
CPCB29C64/153B29C64/357B33Y10/00B33Y80/00B33Y70/00B33Y40/00B29C64/314B29C64/268B29K2105/251B29K2105/26
Inventor C·沃德S·乔尔R·哈姆恩斯E·大卫
Owner SOLVAY SPECIALTY POLYMERS USA LLC