In a vat polymerization 3D printing, what is the amount of energy required for curing commercial resins? Manufacturers or suppliers usually specify wavelength but not the intensity. Any reasons for this?
Dear Vijaya sankar kn, intensity depends on essentially two factors, the thickness of the item to be polymerized/cured and the reactivity of the components involved in the reaction (monomer(s) and initiator). This later is represented by the quantum yield parameter (phi), which is a measure of how much energy is used by the system. Intensity is oppositely related to reactivity. Highly reactive system requires less intensity and vice versa. Intensity also important when it is to monitor reaction time. My Regards
Attached is a free access paper on modelling photocuring and the equations relating the different parameters.
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