Novel Visible Light Photoinitiator for Hybrid Resins:Mitigating Shrinkage in Vat Photopolymerization

Shrinkage is a significant issue observed in photo-curable resins used in vat photopolymerization. This studyintroduces a novel visible light photoinitiating system for curing a hybrid acrylate-epoxide photo-resin. Theresearch employs real-time Fourier-transform infrared spectroscopy (RT-FTIR) to study the kinetics ofphotopolymerization in this hybrid system. The effects of varying acrylate and epoxide compositions on the finalconversion and rate of polymerization are evaluated to gain deeper insights into formulating resins for digitallight processing (DLP) ۳D printing. The data obtained aids in optimizing resin compositions and printingconditions to minimize shrinkage-related issues, such as dimensional inaccuracies and structural distortions.These findings contribute to advancing the understanding and control of shrinkage in photocurable resins,thereby improving DLP ۳D printing capabilities.

کلیدواژه ها:

Additive Manufacturing ، Three-component photoinitiating system ، Rhodamine B ، IPN