Technische karakteristieken
- Zeer hoge slagvastheid, vrijwel onbreekbaar
- Transparant met hoge lichtdoorlatendheid (~90%)
- Goede warmtebestendigheid tot circa 120°C
- Goede maatvastheid en dimensionele stabiliteit
- Goede elektrische isolatie-eigenschappen
- Beperkte chemische bestendigheid, gevoelig voor zuren en oplosmiddelen
- Goed thermovormbaar en bewerkbaar
- UV-bestendig met speciale additieven
Typische toepassingen
- Veiligheids- en beschermingsbeglazing (bv. kogelwerend glas)
- Machinebouw: afschermingen, beschermkappen en behuizingen
- Automotive onderdelen zoals koplampen en interieurpanelen
- Elektronica behuizingen en onderdelen
- Lichtkoepels en dakplaten
- Medische apparatuur en instrumenten
- Optische toepassingen, lenzen en brilglazen
- Consumptiegoederen en sportuitrusting
Guideline Datasheet: Polycarbonate (PC)
| Property | Test method | Unit | Value |
|---|---|---|---|
| General properties | |||
| Density | ISO 1183 | g/cm³ | 1.2 |
| Water absorption (normal climate) | - | % | 0.2 |
| Flammability | DIN 4102 | - | B 1 |
| Specific heat capacity | - | kJ/kg·°C | 1.17 |
| Mechanical properties | |||
| Tensile strength | DIN 53455 | N/mm² | 70 |
| Elongation at break | DIN 53455 | % | 100 |
| Elastic modulus (23°C) | DIN 53457 | N/mm² | 2500 |
| Flexural strength | DIN 53452 | N/mm² | 75 |
| Impact strength (Charpy, 23°C) | DIN 53453 | - | 40 |
| Shore hardness | - | Shore D | 80 |
| Coefficient of friction | - | - | 0.39 |
| Electrical properties | |||
| Dielectric constant (100 Hz) | DIN 53485 | - | 3.0 |
| Dissipation factor (100 Hz) | DIN 53483 | - | 0.0007 |
| Volume resistivity | DIN 53482 | Ω·cm | 10¹⁶ |
| Surface resistivity | DIN 53482 | Ω | 10¹³ |
| Comparative tracking index | DIN 53480 | KC | 260–300 |
| Dielectric strength | DIN 53481 | kV/mm | 38 |
| Thermal properties | |||
| Melting temperature | - | °C | 230 |
| Thermal conductivity | DIN 52162 | W/m·K | 0.21 |
| Coefficient of linear thermal expansion | DIN 53762 | mm/m·°C | 0.07 |
| Continuous use temperature (unloaded) | - | °C | -30 to 120 |
| Max. short-term use temperature | - | °C | 150 |
| Heat deflection temperature | DIN 53461 | °C | 138 |
Comparison Polycarbonate, Acrylic and PET-G
| Property | Acrylic (PMMA) | PET-G | Polycarbonate (PC) |
|---|---|---|---|
| Transparency / Clarity | Excellent | High | High |
| Density / Weight | Low | Low | Low |
| Tensile Strength vs Glass | 30x stronger | 150x stronger | 250x stronger |
| Weather Resistance | Excellent | Good | Good |
| Cold Bending | Limited | Medium | Good |
| Hot Bending | Good | Good | Good |
| Printability | Good | Good | Good |
| Fire Rating* (DIN 4102) | B2 (normally flammable) | B1 (hardly flammable) | B1 (hardly flammable) |
* Fire rating according to DIN 4102 (German fire safety standard):
| Class | Description |
|---|---|
| A1 | 100% non-combustible |
| A2 | 98% non-combustible |
| B1 | Hardly flammable |
| B2 | Normally flammable |
| B3 | Easily flammable |
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