According to a March 20 issue of Science, a team led by Professor DeSimone at the University of North Carolina in the United States has developed an improved 3D printing technology called "Continuous Liquid Interface Manufacturing Technology" (CLIP) The traditional 3D printing speed can be increased by several times or even 100 times, will bring tremendous progress for 3D printing applications.
CLIP technology is based on the mainstream of photo-curable (SLA) 3D printing technology, are the use of ultraviolet light-sensitive resin, the liquid resin polymerization into a solid, which print molding. However, the printing speed of the conventional SLA technology is limited by the blocking effect of the cured resin. If the polymerization speed is too fast, the printed material will stick to the glass substrate. Therefore, it is necessary to lower the resin pool before the resin is completely cured, so that the liquid resin fills the bottom plate and Cure the gap between the resin and repeat the process to reduce the print speed. The improved CLIP technology uses polytetrafluoroethylene as the light-transmissive substrate. This material also has the property of passing oxygen. Oxygen is a light-blocking resin that forms a thin layer between the substrate and the bottom of the cured resin Areas that can not be cured speed up the printing process.
By properly adjusting the amount of oxygen, the light intensity and the photo-curing rate of the resin, fast 3D printing can be achieved while maintaining the accuracy. In a demonstration video on the Science website, it took only 6 and a half minutes to print a complex Eiffel Tower model that typically took hours to print. By using other photosensitive macromolecular compounds, it is also possible to print materials with different properties, such as high elasticity or high damping, for different applications.
Professor DeSimone set up his own company, Carbon 3D, to continue commercializing this technology. It can be predicted that CLIP technology will have considerable business prospects in the future.
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