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The aim of this research is to analyze the influence of shrinkage behavior on the deformation of forming parts in mask projection stereolithography. A mask projection stereolithography machine based on DLP (digital light procession) technology was designed, and the shrinkage of photosensitive resin during light-cured process was analyzed. The shrinkage behavior of resin in different exposure situations, free-surface and constrain-surface, and also in secondary curing process was studied. The result shows that in free-surface, the shrinkage of B5B type resin is proportional to the exposure time, eventually it stabilizes at around 4%. When it is in constrain-surface, the overflowed light curing effect leads to shrinkage which decreases with exposure time increased, and the shrinkage generated in the secondary curing process accounts for 40%~50% of total. © 2015, Beijing University of Technology. All right reserved.
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Journal of Beijing University of Technology
ISSN: 0254-0037
Year: 2015
Issue: 12
Volume: 41
Page: 1828-1831
Cited Count:
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0