FRX Polymers are finding applications as a specialty resin and as non-halogenated "melt processable" FR additives for engineering plastics. Initial development of FRX Polymers’ properties in various polymer systems is underway. Strong value propositions have been uncovered, and the preliminary properties in three systems are listed below.
FRX Copolymers in PC
FRX Copolymers allow PC to achieve a UL 94 V0 rating at 1.6 mm while simultaneously maintaining transparency. When used by itself, FRX CO 35 is capable of achieving a 0.75 mm V0 while maintaining full transparency.
Properties |
FRX CO 35/PC Compound |
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| Tensile stress at break (mPa) | 63 | ||
| Elongation at break (%) | > 100 | ||
| Flexural modulus (mPa) | 2200 | ||
| HDT @ 1.82 mPa (°C) | 116 | ||
| MFI 300 C / 1.2 kg (g/10 min) | 15 | ||
| UL 94 @ 1.6 mm | V0 | ||
| Phosphorus content (%) | 0.57 | ||
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FRX Copolymers have been tested as a replacement for both polycarbonate and a phosphorous-containing FR additive known as BDP in typical FR PC/ABS formulations. FRX Copolymers provide excellent FR properties while simultaneously improving the heat distortion temperature of the blend. Unlike standard phosphorous-containing additives, FRX Polymers do not migrate out of the plastic article overtime and results in a more hydrolytically stable final product.
FR PC/ABS.
| Properties | Commercial FR PC/ABS | FRX CO 35/ ABS |
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| Tensile Modulus (Gpa) | 2.5 | 2.5 | |
| Sharpy Impact - Notched | |||
| -30 C (KJ/M2) | 16 | 20 | |
| RT (KJ/M2) | 49 | 59 | |
| Falling Dart Energy at Break RT (J) | 41 | 39 | |
| Vicat Softening B (°C) | 110 | 137 | |
| HDT @ 1.82 Mpa (°C) | 85 | 120 | |
| MVR @ 240 C /5Kg (cm3/10 min) | 17 | 15 | |
| UL 94 V0 | 1.5 | 1.5 | |
Hydrolytic Stability @ 95 °C/100% RH |
320% | 150% | |
| ESC Behavior (Time to Failure) | |||
| Rape Seed Oil | 30 min | 170 min | |
| Mineral Oil (HLP 150) | NB 168 hrs | NB 168 hrs | |
| Hand Lotion (Sebamed) | 21 hrs | 14 hrs | |
| Blooming Tendency | Yes | No | |
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FRX Polymers in PBT
FRX Polymers offers a non-blooming FR system for PBT. When compounded into glass-reinforced PBT together with a synergist, FRX delivers excellent physical, rheological and electrical properties.
FR Glass Reinforced PBT
| Properties/Cost Market Opportunity | Halogen-Based Competitive Solution | Phosphorus-based Competitive Solution | FRX 100 Solution |
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| Halogen Containing | Yes | No | No | |
| Glass | 30% | 30% | 30% | |
| UL V0 Rating (mm) | 0.8 | 0.8 | 0.8 | |
| Tensile (Mpa) | 100 | 90 | 101 | |
| Tensile Modulus (Gpa) | 12 | 10 | 12.5 | |
| Impact Resistance (notched - KJ/M2) | 10 | 5.3 | 7 | |
| Spiral Flow (cm) | unknown | 20 | 40 | |
| MVR (5Kg / 250 °C) | 6 | 6 | 15 | |
| CTI (Volts) | 200 | 600 | 450 | |
| GWIT @ 1 mm (°C) | 775 | <750 | 825 | |
| Blooming Tendency | unknown | Yes | No | |
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