KURALPHA™ MX grade (special high heat-resistant acrylic resin)
Combines high heat resistance temperature and flowability
KURALPHA™ MX grades have a higher heat resistance temperature than general-purpose PMMA (Tg 122°C), yet have high flowability (MFR: 6) and are easy to injection-mold.
Physical Properties Data
Compared to HR-L (general PMMA).
Items: Total light transmittance, flexural modulus, deflection temperature under load (with annealing), MFR, pencil hardness
| Test Item | Test Procedure | Test Conditions | Unit | HR-L (General PMMA) | KURALPHA™ MX (Development product) | KURALPHA™ AX (Development product) |
|---|---|---|---|---|---|---|
| Total light transmittance | ISO 13468-1 | 3 mm | % | 92≦ | 92 | up to 90 |
| Flexural Modulus | ISO 178 | 2mm/min | MPa | 3,300 | 3,400 | 3,500-4,000 |
| Flexural Strength | ISO 178 | 2mm/min | MPa | 114 | - | - |
| Tensile Strength | ISO 527-2 | 1A/5 | MPa | 77 | - | - |
| Charpy Impact Strength (Notched) | ISO 179 | 1eA | kJ/m2 | 1.4 | 1.3 | 1.4 |
| Deflection Temperature Under Load (Annealed) | ISO 75-1/2 | 1.8MPa | ℃ | 101 | 112 | 135-140 |
| Vicat Softening Temperature | ISO 306 | 50°C/h, 50N | ℃ | 110 | 116 | 135-140 |
| MFR | ISO 1133 | 230°C 3.8 kg load | g/10min | 2.4 | 6.0 | 1.5-2.0 |
| Pencil Hardness | - | - | - | 2H | F | 2H-3H |
| Coefficient of Linear Expansion | - | - | 1/°C | 6 × 10-5 | 6 × 10-5 | 5 × 10-5 |
| Saturated Water Absorption | - | 23°C | % | 2.0 | 1.1 | 1.8 |
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Note: The property values shown are representative values for the natural color and are not guaranteed.
