Revolutionary Depolymerizable Resin Enables Recyclable 3D Printing Photopolymers
Generally the idea with photopolymers as used with resin 3D printing is that the process only works in a single direction as with all thermosets: after polymerization under influence of UV light they become an inert lump of plastic. Being able to turn these lumps back into resin would of course be ideal, as it would make recycling incredibly easy. Here depolymerizable resin turns out to be a thing, with 3Dresyn being one company that sells additives and resin which enable thi
A breakthrough in resin 3D printing technology allows for the reuse of photopolymers, traditionally single-use thermosets. Companies like 3Dresyn are developing additives and resins that enable depolymerization, effectively turning hardened plastic back into liquid resin. This innovation addresses a major challenge in recycling thermoset materials used in processes like SLA and epoxy printing. Researchers have demonstrated a closed-loop system where a resin can be polymerized, depolymerized, and re-polymerized multiple times. The depolymerization process can be triggered by specific temperatures, either 80°C or 150°C. While the initial cost of this specialized resin is high (€833.00 per kg), its reusability offers significant environmental and economic benefits. This development marks a significant step towards a circular economy in additive manufacturing.
This innovation offers a sustainable solution to the waste problem in resin 3D printing by enabling material recycling.
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