3Dresyn PSci PPO, for SLA, DLP & LCD printing of Plastic Scintillators for Radiation Detection

Typical uses

• custom scintillator shapes, embedded light guides, micro-structured detector elements, teaching kits, shielding inserts with integrated sensing pathways

Highlights

• scintillating photopolymer (PPO/POPOP) tuned for 405 nm DLP/LCD printers
• customizable light yield vs. printability via selectable PPO levels
• efficient energy transfer to fluors
  

Note: Higher PPO improves scintillation yield but increases optical absorption at 405 nm, narrowing the print window. Choose the variant that best matches your printing specifications

Variants

• PSci-S (Print-Ease): PPO 2–5 wt% — best printability/clarity; reference grade for process setup
• Custom designed variants upon request:
  • PSci-M (Balanced): PPO 6–10 wt% — higher light yield with moderate exposure increase
  • PSci-H (High Yield): PPO 15–20 wt% — for thin parts or heated vat; requires longer exposures
  • PSci-XH (Max Yield): PPO 25–30 wt% — experimental; heated vat (35–45 °C) strongly recommended, slow cure

Key Properties (typical, room-temperature prints, post-cured)

• appearance (liquid): clear, pale yellow
• viscosity @ 25 °C: <2000 mPa·s
• cured color: very pale yellow to light amber
• hardness (Shore D): ~75–85
• Glass transition (Tg): ~70–90 °C (indicative; post-cure dependent)
• Refractive index (nD): ~1.55–1.58
• optical quality: low-haze grades available; polishable to optical finish
• scintillation: fast organic scintillator response (PPO/POPOP); relative yield increases with PPO loading*

*Absolute light yield and timing depend on geometry, surface finish, and detector coupling; request the characterization note if needed.

Printing Guidelines

• resin temperature: 25 °C for PSci-S/M; 35–40 °C recommended for PSci-H/XH
• build plate/first layers: increase base exposure ×3–5 vs. normal layers
• normal layer exposure: higher than standard clear 3D resins
• layer thickness: 50–100 µm typical; thinner layers aid through-cure at high PPO

Post-processing

• wash: quick two-step rinse in a low-extractable, low-fluorescence cleaner; avoid over-washing to limit dopant leaching
• dry: filtered air or cleanroom wipes; no prolonged soak in cleaning fluid
• post-cure: 405–420 nm (optionally add 365 nm) to maximum conversion 
• finishing: progressive micro-polish and/or optical clearcoat to maximize internal reflection; keep surfaces clean before coupling

Detector Integration Tips

• couple to SiPM/PMT with an index-matching gel or optical epoxy
• blacken non-coupling faces or use reflective wraps (e.g., PTFE tape) to manage escape cones
• for thick parts with high PPO: prefer short optical paths or internal light guides

Safety & Handling

• does not contain flammable raw materials

Compatibility

• designed for SLA, LCD & DLP printers (open-parameter).
• works on most SLA, DLP & LCD printers with adjustable exposure

IMPORTANT: The product has a guaranteed shelf life of 12 months, but in practice it has a  longer shelf life. Its delivery time is around 3-4 weeks after ordering.