New 3D Printing Method Could Help Create Tougher Materials

The existing printing mechanism of the bottom-up vat photopolymerization 3D printing technique, however, necessitates high fluidity of the ultraviolet (UV)-curable resin. This viscosity requirement restricts the capabilities of the UV-curable, which is usually diluted before use (up to 5000 cps of viscosity).
The addition of reactive diluent sacrifices the oligomers’ original mechanical properties. The leveling of the resin and the deformation of the cured parts from the film are the two main technical challenges of 3D printing high-viscosity resins.
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The addition of reactive diluent sacrifices the oligomers’ original mechanical properties. The leveling of the resin and the deformation of the cured parts from the film are the two main technical challenges of 3D printing high-viscosity resins.
A research team from the Fujian Institute of Research on the Structure of Matter of the Chinese Academy of Sciences under the direction of Prof. Lixin Wu suggested linear scan-based vat photopolymerization (LSVP) for 3D printing ultra-high viscosity resin. Their investigation was published in Nature Communications.