Long-Duration Storage of Photocurable Materials for Space Missions: Radiation, Thermal Excursions, Latency and Recovery

Long-duration space missions can store photocurable feedstocks far longer and under more variable environments than a terrestrial printer workflow. Resin chemistry can evolve through thermal ageing, inhibitor consumption, dark reactions, volatile loss, phase separation and radiation exposure before the material is ever printed. A valid shelf-life claim must therefore connect storage history to recovered processability and final-part performance. This review defines qualification for mission storage, including thermal excursions, radiation, vacuum or pressure state, latency, mixing or reconditioning, requalification and recovery after off-nominal exposure. ER-450.