类别：聚合物；热塑性；聚甲醛（POM）
材料说明：Hostaform®共聚级lm140lg是激光标记的专业级缩醛共聚物的制定提供良好的流动具有低光泽。
激光标记，光泽度低，流动性好
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.33 g/cc | 0.0480 lb/in³ | ISO 1183 | ||
| Melt Flow | 13 g/10 min @Load 2.16 kg, Temperature 190 °C |
13 g/10 min @Load 4.76 lb, Temperature 374 °F |
(MVR) cm³/10min; ISO 1133 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength, Yield | 41.0 MPa | 5950 psi | 50mm/min; ISO 527-2/1A | ||
| Elongation at Yield | 10 % | 10 % | 50mm/min; ISO 527-2/1A | ||
| Tensile Modulus | 1.90 GPa | 276 ksi | 1mm/min; ISO 527-2/1A | ||
| Charpy Impact, Notched | 0.310 J/cm² | 1.48 ft-lb/in² | ISO 179/1eA | ||
| Thermal Properties | Metric | English | Comments | ||
| Melting Point | 166 °C | 331 °F | 10°C/min; ISO 11357-1,-2,-3 | ||
| Deflection Temperature at 1.8 MPa (264 psi) | 80.0 °C | 176 °F | ISO 75-1, -2 | ||
| Processing Properties | Metric | English | Comments | ||
| Processing Temperature | 80.0 - 105 °C | 176 - 221 °F | Cavity temperature | ||
| Zone 1 | 170 - 175 °C | 338 - 347 °F | |||
| Zone 2 | 170 - 180 °C | 338 - 356 °F | |||
| Zone 3 | 175 - 185 °C | 347 - 365 °F | |||
| Zone 4 | 180 - 190 °C | 356 - 374 °F | |||
| Die Temperature | 185 - 195 °C | 365 - 383 °F | |||
| Melt Temperature | 180 - 195 °C | 356 - 383 °F | |||
| Mold Temperature | 82.2 - 93.3 °C | 180 - 200 °F | generally preferred range, may vary with thickness | ||
| Drying Temperature | 105 - 110 °C | 221 - 230 °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 | |||
| De |
|||||
| Injection molding | Yes | ||||
| Injection speed | slow | ||||
| Pre-drying | Predrying is required before processing to ensure a low gloss finish. | ||||
| Processing conditions | ISO 9988-2 | ||||
| Processing Notes | Use slow injection speed until material passes through gate, then increase. | ||||
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