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Polypropylene co-polymer (PPC) is a bit softer than homopolymer but has a better impact strength as well as being tougher and more durable than homopolymer polypropylene. polypropylene copolymer tends to have better stress crack resistance and low temperature toughness than homopolymer at the expense of quite small reductions in other properties.
Physical Properties
| Properties (Unit) | Test Method | PPC |
|---|---|---|
| <b>Density (g/cm³)</b> | ISO 1183 | 0.91 |
| <b>Hardness Shore D</b> | ISO 868 | 60 |
| <b>Flexural Modulus (MPa)</b> | ISO 178 | 1050 |
| <b>Tensile Strength Yield (MPa)</b> | ISO R527 | 26 |
| <b>Elongation at Yield (%)</b> | ISO R527 | 16 |
| <b>Tensile Modulus (MPa)</b> | ISO 527 | 900-1100 |
Thermal Properties
| Properties | Test Method | Value |
|---|---|---|
| <b>Vicat Softening Point – 9.8N (°C)</b> | ISO 306/A | 151 |
| <b>HDT – 0.46 MPa (°C)</b> | ISO 75/B | 88 |
| <b>Linear Co-efficient of Expansion (°C)</b> | DIN 53752 | 1×10¯⁴ at 20°C<br>2×10¯⁴ at 90°C |
| <b>BS476 Part 7</b> | – | Class 4 |
| <b>MVS 302 (1mm & above)</b> | – | Passes |
| <b>UL94HB (Internal Test)</b> | – | Passes |
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