PVC
PVC is a thermoplastic elastomer with versatile characteristics. PVC plastics are divided into hard and soft PVC:
Soft PVC contains softener that gives the material elastic properties. The added softeners allow good variability in the hardness and durability of PVC.
- good isolator
- easy to colour
- low absorption of water
- resistant to acidity, alkalis, alcohol, oil and petrol.
Hard PVC can be machined well and can be shaped at temperatures of 120 – 150°C without machining.
Joins can be made using appropriate adhesives or hot air welding.
Alternatives to PVC are PP (Polypropylen) or PE (Polyethylen), which M+R also supply.
Characteristics
| Comparative parameter | PVC-U (PVC hard) | PVC-P (PVC soft) |
|---|---|---|
| Mechanical properties: | ||
| Density in g/cm³ | 1,38 – 1,55 | 1,16 – 1,35 |
| Tensile strength N/mm² DIN 53455 | 50 – 75 | 10 – 25 |
| Elongation at break / tear strength % DIN 53455 | 10 – 50 | 170 – 400 |
| Modulus of Elasticity N/mm² DIN 53457 | 1000 – 3500 | xxx |
| Indentation hardness 10 second value N/mm² DIN 53456 | 75 – 155 | xxx |
| Impact resistance kJ/m² DIN 53453 | > 20 | o. |
| Notch resistance kJ/m² DIN 53453 | 2 – 75 | o. Br. |
| Specific volume resistivity Ω DIN 53482 | > 1015 | > 1011 |
| Surface resistivity Ω DIN 53482 | 1013 | 1011 |
| Service temperature in °C | −15 – 60 | – |
| Electrical characteristics: | ||
| Relative permittivity DIN 53483 50 Hz εr | 3,5 | 4 – 8 |
| Relative permittivity DIN 53483 106 Hz εr | 3,0 | 4 – 4,5 |
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