Layerless fabrication with continuous liquid interface production.

Autor:	Janusziewicz R; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599., Tumbleston JR; Carbon, Inc., Redwood City, CA 94063., Quintanilla AL; Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695., Mecham SJ; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599., DeSimone JM; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; Carbon, Inc., Redwood City, CA 94063; Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695 desimone@email.unc.edu.
Jazyk:	angličtina
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2016 Oct 18; Vol. 113 (42), pp. 11703-11708. Date of Electronic Publication: 2016 Sep 26.
DOI:	10.1073/pnas.1605271113
Abstrakt:	Despite the increasing popularity of 3D printing, also known as additive manufacturing (AM), the technique has not developed beyond the realm of rapid prototyping. This confinement of the field can be attributed to the inherent flaws of layer-by-layer printing and, in particular, anisotropic mechanical properties that depend on print direction, visible by the staircasing surface finish effect. Continuous liquid interface production (CLIP) is an alternative approach to AM that capitalizes on the fundamental principle of oxygen-inhibited photopolymerization to generate a continual liquid interface of uncured resin between the growing part and the exposure window. This interface eliminates the necessity of an iterative layer-by-layer process, allowing for continuous production. Herein we report the advantages of continuous production, specifically the fabrication of layerless parts. These advantages enable the fabrication of large overhangs without the use of supports, reduction of the staircasing effect without compromising fabrication time, and isotropic mechanical properties. Combined, these advantages result in multiple indicators of layerless and monolithic fabrication using CLIP technology. Competing Interests: J.R.T. and J.M.D. have an equity stake in Carbon, Inc., which is a venture-backed manufacturer of continuous liquid interface production equipment. Continuous liquid interface production is the subject of patent protection including issued US patents 9,205,601, 9,211,678, and 9,216,546.
Databáze:	MEDLINE
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