FRX CO™ 35
FRX copolymers consist of block copolymers of polyphosphonate and polycarbonate. A range of compositions can be produced from high to low polyphosphonate content. The data below pertains to a copolymer with 35% by weight polyphosphonate content. Impact resistance and glass transition temperature are greatly improved versus the homopolymer, while simultaneously maintaining a high limiting oxygen index and relative high flow.
Summary Properties of FRX CO™ 35 vs. FR PC
| FRX CO 35 | FR PC | |||
| Mechanical Properties | ||||
| Tensile Stress at Yield (Mpa) | 66 | 49 | ||
| Tensile Stress at Break (Mpa) | 53 | 45 | ||
| Elongation at Yield (%) | 5 | 5 | ||
| Elongation at Break (%) | 110 | 80 | ||
| Tensile Modulus (Mpa) | 2800 | 2100 | ||
| Flex Modulus (Mpa) | 2810 | 2060 | ||
| Flex Stress @ Yield (Mpa) | 109 | 80 | ||
| Impact Properties | ||||
| Notched Izod at 23 °C (J/M) | 483* | 510 | ||
| Reverse Notch at 23 °C (J/M) | NB | NB | ||
| Thermal Properties | ||||
| HDT @ 0.455 Mpa (°C) | 125 | 131 | ||
| HDT @ 1.82 Mpa (°C) | 115 | |||
| Melt Flow | ||||
| MVR 280C/1.2Kg | 8.7 | 3** | ||
| FR Properties | ||||
| UL 94 @ 0.75 mm | V0 | |||
| UL 94 @ 1.48 mm | V0 | V0 | ||
| UL 94 @ 1.6 mm | ||||
| UL 94 @ 3.0 mm | ||||
| Hydrolytic Stability (change in mol weight) | ||||
| 90 °C / 90% Relative Humidity | 100 hrs - no change in Mw | |||
| Optical Properties | ||||
| Transparency (%) | 90 | Opaque | ||
| P content (%) | 3.78 | |||
| Notes:
*Impact resistance @ <2mm |
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