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Plasma-treated sheets for additive manufacturing

A technology of sheet, nitrogen atoms, applied in the field of additive manufacturing

Pending Publication Date: 2021-02-02
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, contact with adjacent layers or material adhesion between adjacent layers may not provide the secure attachment between sequentially formed layers as expected by one or more specifications of the additively manufactured part

Method used

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  • Plasma-treated sheets for additive manufacturing
  • Plasma-treated sheets for additive manufacturing
  • Plasma-treated sheets for additive manufacturing

Examples

Experimental program
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Embodiment Construction

[0025] The exemplary embodiments herein recognize and take into account one or more different considerations. For example, the exemplary embodiments recognize and take into account that parts manufactured using additive manufacturing processes typically exhibit lower intra- and inter-layer part robustness than parts manufactured using, for example, injection molding. More specifically, the exemplary embodiments also recognize and take into account that parts manufactured using additive manufacturing processes typically have limited chain diffusion between layers of composite materials.

[0026] Exemplary embodiments herein describe methods of utilizing molecular / chemical crosslinks between constituent material layers to form strong three-dimensional parts. In exemplary embodiments described herein, a polymer sheet is plasma treated to include, for example, an amine (-NH 2 ) functionality or epoxy functionality. Combinations of plasma treated sheets may comprise the same poly...

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Abstract

The invention discloses a plasma-treated sheets for additive manufacturing. Illustrative examples of forming and using suitably adapted material in an additive manufacturing process includes operations of: exposing a first polymer sheet to a first plasma, such that an amine-functionalized sheet surface is formed; exposing a second polymer sheet to a second plasma, such that an epoxide-functionalized sheet surface is formed; and combining the amine-functionalized sheet and the epoxide-functionalized sheet, such that the amine-functionalized sheet surface contacts the epoxide-functionalized sheet surface. The workpiece is subsequently heated to form a structure, where heating of the workpiece causes covalent chemical bonds to form between the plasma-treated first polymer sheet and the plasma-treaded second polymer sheet.

Description

technical field [0001] The present disclosure relates generally to additive manufacturing, and more particularly to the composition, preparation and use of plasma-treated sheets in additive manufacturing. Background technique [0002] Additive manufacturing is a manufacturing process in which an additive manufacturing system processes objects based on a three-dimensional model or other digital representation of a three-dimensional object. Additive manufacturing systems manufacture objects by sequentially depositing layers of component materials in the shape of the object until the object is formed. In one embodiment, a continuous layer of material is deposited. These deposited layers of material are attached to build the final object. The final 3D object is fully dense and can include complex shapes—"completely dense" generally means that the object has essentially no unexpected void regions. [0003] A typical additive manufacturing process involves depositing a base lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/147B29C64/314B29B13/08B33Y10/00B33Y40/10
CPCB29C64/147B29C64/314B29B13/08B33Y10/00B33Y40/10B32B7/04B32B7/10B32B27/08B32B2250/24B32B27/16B32B2274/00B32B27/34B32B27/302B32B27/32B32B27/308B32B27/288B32B27/285B32B2605/18B32B37/06C09J5/02C09J2423/046C09J2423/048C09J2427/006C09J2427/008C09J2433/006C09J2433/008C09J2477/006C09J2477/008C09J2471/005C09J2471/006B33Y70/00B29C64/393B29C64/268B29K2101/12
Inventor N·K·辛哈O·普拉卡什
Owner THE BOEING CO
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