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Analyse infrarouge du temps de diffusion / reptation à l'interface

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Salut

Un peu de lecture pour les vacances ;)

IMG_20160806_085002.thumb.jpg.9c2e2eb8c4ccc780b72b48dc6a0687f3.jpg

http://www.nist.gov/mml/upload/Session-2_2-Olmsted.pdf

Des précisions sur l'influence de la vitesse d'impression et surtout de la température d'extrusion

http://www.nist.gov/mml/upload/Session-3_3-Seppala-Migler-NIST-Polymer-based-AM-Workshop-Web-posting.pdf

Publication

http://spin1-www.nist.gov/customcf/get_pdf.cfm?pub_id=920174&_ga=1.145472692.1657972553.1470427122

IMG_20160806_085002.thumb.jpg.9c2e2eb8c4ccc780b72b48dc6a0687f3.jpg

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Très très impressionnant et ça fait comprendre pas mal de chose...

 

Cela prouve qu'il reste beaucoup à faire pour optimiser nos machines et nos slicer de moyenne gamme.

Sur des machines pro il y a des chambres chaude pour ralentir la brutale descente en température et gagner une precieuse seconde ( ou plus ) d'inter-diffusion mais aussi pour permettre un meilleur respect du contrôle dimensionel.

Et je ne parle pas de la mise sous pression de la chambre d'impression 5-7 bars pour faciliter l'absorption des micro-bulles d'air ( porosités ) emprisonées au dépot du filament, technique utilisé pour le rotomoulage....les 5 axes pour pouvoir " tisser " avec le dépot....la fibre longue....etc....

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