The PC is sensitive to chlorinated solvents, aromatic hydrocarbons and strong bases (hydrolysis). Good resistance to dilute acids and water at ambient temperature. Avoid esters and ketones. Sensitive to stress cracking with certain greases.
PC (Polycarbonate) – glass beads
Reinforced Glass marbles
✓ This material meets the criteria ~ Specialized grades may meet this criteria
| Density | 1.25 to 1.50 g/cm³ ASTM D792 |
|---|---|
| Charpy notched impact | 60 kJ/m2 |
| Flexural modulus | 2410 to 3450 MPa ASTM D790 |
| Flexural resistance | 90 MPa |
| Tensile modulus | 2400 to 3520 MPa ASTM D638 |
| Tensile resistance | 70 MPa |
| Tensile strain | 9.8 to 10 % ASTM D638, Yield |
The PC is sensitive to chlorinated solvents, aromatic hydrocarbons and strong bases (hydrolysis). Good resistance to dilute acids and water at ambient temperature. Avoid esters and ketones. Sensitive to stress cracking with certain greases.
Injection at 270–320 °C, mould at 80–120 °C. Pre-drying is essential: 4–6 hours at 120 °C. Highly susceptible to hydrolysis if damp. High viscosity requires high pressure. Low shrinkage (0.5–0.8 %). Take care with birefringence on optical components.
The PC is recyclable (code 7). Chemical depolymerisation allows for the recovery of BPA and diphenyl carbonate. Mechanical recycling is common in industry but degrades transparency and impact resistance after several cycles.
PC-FDA grades are approved for food contact. Beware of older grades that may contain BPA. Modern BPA-free grades comply with EU regulation 10/2011 for certain uses. Always check the specific grade.