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Methodologies to rapidly cure and coat parts produced by additive manufacturing

A technology of parts and liquid baths, applied in processing and manufacturing, manufacturing tools, additive manufacturing, etc., can solve the problems of increased production time, high cost, inconvenient and necessary washing solution, etc.

Pending Publication Date: 2021-11-23
蔚蓝3D公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Washing leads to high expense, increased production time and inconvenient necessity for proper disposal of wash solution

Method used

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  • Methodologies to rapidly cure and coat parts produced by additive manufacturing
  • Methodologies to rapidly cure and coat parts produced by additive manufacturing
  • Methodologies to rapidly cure and coat parts produced by additive manufacturing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] 3D printing resin:

example

[0157] Example Basic 3D Printing Resin Formulation

[0158] Photoinitiator, IGM Resin Omnirad 819 (phenyl bis (2,4,6-trimethylbenzyl) phosphine oxide, CAS162881-26-7) or BASF TPO (diphenyl (2,4,6-trimethylbenzyl) benzoyl)phosphine oxide, CAS 75980-60-8). The weight percent range of 0.05% to 5% initiator is used.

[0159] A reactive diluent, 1,6-hexanediol diacrylate (HDDA) monomer diluent, was used in a weight percent range of 20% to 80%.

[0160] Use the reactive oligomer BOMAR in the range of 20% to 80% by weight TM BR-970BT (proprietary polyurethane difunctional acrylate available from Dymax Corporation).

[0161] Use 0.05% to 5% by weight of thermal initiators, benzyl peroxide (60°C to 80°C thermal decomposition / initiation) or N-tert-butyl-benzothiazole sulfonamide (~120°C thermal decomposition / initiation) triggered).

[0162] 3D object design, slicing, video preparation and UV projection

[0163] The 3D STL objects are designed in Blender, an open-source CAD render...

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Abstract

A process to cure and / or modify the surface of a three dimensional (3D) printed part comprising the steps of immersing a three dimensional (3D) printed part, containing reactive moieties, into a liquid bath at an elevated temperature to effect polymerization of the reactive moieties of the 3D printed part to provide a cured 3D printed part is described. The liquid bath can further contain reactive molecules that can react with the surface of the 3D printed part to provide a coating which alters the surface characteristics of the 3D printed part.

Description

[0001] Cross References to Related Applications [0002] This PCT application claims U.S. Provisional Patent Application No. 62, entitled "METHODOLOGIES TO RAPIDLY CURE AND COAT PARTS PRODUCED BYADDITIVE MANUFACTURING," filed April 9, 2019 / 831,537, the contents of which are incorporated herein by reference in their entirety, including but not limited to those aspects related to three-dimensional printing, additive manufacturing. technical field [0003] The present disclosure generally relates to curing and / or modifying the surface of three-dimensional (3D) printed parts. Background technique [0004] Conventionally, stereolithography (SLA) for additive manufacturing has unique capabilities and technological opportunities compared to competing technologies. This is because SLA can deliver high printing speeds while generating objects from a robust library of materials. [0005] However, rapid construction of three-dimensional (3D) parts using such methods has certain disa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C71/02B29C64/00B29C64/10B29C71/00
CPCB29C64/35B33Y40/20B29C64/124B33Y10/00B29C71/0009B29C71/02B29C2071/0018B29C64/30B29C64/264B29C35/0805B29C71/04B33Y70/00B29C64/188B29C2035/0827B33Y80/00
Inventor 大卫·艾伦·沃克
Owner 蔚蓝3D公司