类别：聚合物；热塑性；聚甲醛（POM）；乙缩醛共聚物，矿物填充
材料说明：®mc270矿物是一个耦合的乙缩醛共聚物设计应用需要改进的刚度，降低成型收缩率和减少翘曲而保持未填充的特点®M270等级机械性能特点。
矿产耦合减少翘曲，高流动性
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Specific Gravity | 1.48 g/cc | 1.48 g/cc | ASTM D792 | ||
| Density | 1.48 g/cc | 0.0535 lb/in³ | ISO 1183 | ||
| Water Absorption | 0.75 % | 0.75 % | ISO 62 | ||
| Moisture Absorption | 0.200 % | 0.200 % | 23°C/50%RH; ISO 62 | ||
| Linear Mold Shrinkage, Flow | 0.019 cm/cm | 0.019 in/in | ASTM D955 | ||
| 0.019 cm/cm | 0.019 in/in | ISO 294-4 | |||
| Linear Mold Shrinkage, Transverse | 0.016 cm/cm | 0.016 in/in | ASTM D955 | ||
| 0.016 cm/cm | 0.016 in/in | ISO 294-4 | |||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength, Yield | 53.1 MPa | 7700 psi | ASTM D638 | ||
| 57.0 MPa | 8270 psi | 50mm/min; ISO 527-2/1A | |||
| Elongation at Yield | 7.0 % | 7.0 % | 50mm/min; ISO 527-2/1A | ||
| Tensile Modulus | 3.15 GPa | 457 ksi | 1mm/min; ISO 527-2/1A | ||
| Flexural Strength | 77.0 MPa | 11200 psi | ISO 178 | ||
| Flexural Modulus | 3.10 GPa | 450 ksi | ISO 178 | ||
| 2.96 GPa @Temperature 22.8 °C |
430 ksi @Temperature 73.0 °F |
ASTM D790 | |||
| Izod Impact, Notched | 0.534 J/cm | 1.00 ft-lb/in | ASTM D256 | ||
| 0.320 J/cm @Temperature -40.0 °C |
0.600 ft-lb/in @Temperature -40.0 °F |
ASTM D256 | |||
| 0.481 J/cm @Temperature 82.2 °C |
0.900 ft-lb/in @Temperature 180 °F |
ASTM D256 | |||
| Izod Impact, Notched (ISO) | 5.50 kJ/m² | 2.62 ft-lb/in² | ISO 180/1A | ||
| Charpy Impact, Notched | 0.540 J/cm² | 2.57 ft-lb/in² | ISO 179/1eA | ||
| 0.450 J/cm² @Temperature -30.0 °C |
2.14 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 100 µm/m-°C | 55.6 µin/in-°F | ISO 11359-2 | ||
| CTE, linear, Transverse to Flow | 120 µm/m-°C | 66.7 µin/in-°F | ISO 11359-2 | ||
| Melting Point | 165 °C | 329 °F | 10°C/min; ISO 11357-1,-2,-3 | ||
| 165 °C | 329 °F | ASTM D3418 | |||
| Deflection Temperature at 1.8 MPa (264 psi) | 93.3 °C | 200 °F | ASTM D648 | ||
| 101 °C | 214 °F | ISO 75-1, -2 | |||
| Processing Properties | Metric | English | Comments | ||
| Processing Temperature | 80.0 - 120 °C | 176 - 248 °F | Cavity temperature | ||
| Zone 1 | 170 - 180 °C | 338 - 356 °F | |||
| Zone 2 | 180 - 190 °C | 356 - 374 °F | |||
| Zone 3 | 180 - 190 °C | 356 - 374 °F | |||
| Zone 4 | 190 - 200 °C | 374 - 392 °F | |||
| Die Temperature | 190 - 200 °C | 374 - 392 °F | |||
| Melt Temperature | 180 - 200 °C | 356 - 392 °F | |||
| Mold Temperature | 82.2 - 93.3 °C | 180 - 200 °F | generally preferred range, may vary with thickness | ||
| Drying Temperature | 80.0 - 100 °C | 176 - 212 °F | |||
| Dry Time | 3.00 hour | 3.00 hour | |||
| Injection Pressure | 60.0 - 120 MPa | 8700 - 17400 psi | |||
| Hold Pressure | 60.0 - 120 MPa | 8700 - 17400 psi | |||
| Back Pressure | 0.500 MPa | 72.5 psi | |||
| Hot-Working Temperature | 190 - 200 °C | 374 - 392 °F | |||
| De |
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| Injection molding | Yes | ||||
| Injection speed | slow | ||||
| Pellets | Yes | ||||
| Processing conditions | ISO 9988-2 | ||||
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