Dielectric Breakdown and Insulation Ageing in Printed Photopolymers: Defects, Field Concentration, Temperature and Moisture

Printed photopolymers can function as electrical insulators only when their dielectric state is qualified as a manufactured and aged system rather than inferred from nominal resin chemistry. This review separates short-time breakdown from service ageing and examines how voids, incomplete cure, interlayer interfaces, surface contamination, electrodes, thickness, temperature and moisture reshape the local electric field and failure path. Standard dielectric-strength measurements are treated as protocol-bound observables, not intrinsic constants. A non-compensatory qualification architecture is proposed that combines geometry and defect inspection, resistive and dielectric measurements, breakdown statistics, environmental conditioning and post-failure examination. The central conclusion is that high initial breakdown strength does not establish insulation reliability unless the printed state, field distribution and ageing history are jointly controlled.

ER-263 · Version 0.2.