Continuous Additive Manufacturing using Olefin Metathesis.
Adv Sci (Weinh)
; 9(14): e2200770, 2022 05.
Article
em En
| MEDLINE
| ID: mdl-35274480
ABSTRACT
The development of chemistry is reported to implement selective dual-wavelength olefin metathesis polymerization for continuous additive manufacturing (AM). A resin formulation based on dicyclopentadiene is produced using a latent olefin metathesis catalyst, various photosensitizers (PSs) and photobase generators (PBGs) to achieve efficient initiation at one wavelength (e.g., blue light) and fast catalyst decomposition and polymerization deactivation at a second (e.g., UV-light). This process enables 2D stereolithographic (SLA) printing, either using photomasks or patterned, collimated light. Importantly, the same process is readily adapted for 3D continuous AM, with printing rates of 36 mm h-1 for patterned light and up to 180 mm h-1 using un-patterned, high intensity light.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Alcenos
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Impressão Tridimensional
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article