POM Zhonghai Tianye M90
POM Zhonghai Tianye M90
POM Haitian‑Yeye M90 is high‑crystalline plastic with high strength, high rigidity and glossy smooth surface. It features good dimensional stability, excellent wear resistance, chemical resistance and fatigue resistance.
Main Applications
Automotive: lock components, accelerator pedal, hood accessories, wheel valves, exterior parts. Electrical & electronic: various fittings, insulating supports. Mechanical parts: gears, bearings, rollers, pump components, valve parts, guide rails, bearing housings and other precision structural parts requiring wear‑resistance & fatigue‑resistance. Daily goods: zipper sliders, faucet valve cores. Others: thin‑wall parts, pipes.
Physical Properties
| Property Category | Item | Test Condition | Test Standard | Typical Data | Unit |
|---|---|---|---|---|---|
| Physical Properties | MFR | 190℃/2.16kg | ISO 1133 | 9.0±1.0 | g/10min |
| Density | — | ISO 1183 | 1.41 | g/cm³ | |
| Water absorption | 23℃/24h | ISO 62 | 0.7 | % | |
| Equilibrium water absorption | Equilibrium | ISO 62 | 0.2 | % | |
| Mechanical Properties | Tensile Modulus | 23℃ | ISO 527‑1 | 2500‑2700 | MPa |
| Tensile Yield Strength | 23℃ | ISO 527‑1 | 58‑62 | MPa | |
| Elongation at Break | 23℃ | ISO 527‑1 | 30‑50 | % | |
| Flexural Strength | 23℃ | ISO 178 | 60‑61 | MPa | |
| Flexural Modulus | 23℃ | ISO 178 | 2400 | MPa | |
| Charpy Notched Impact | 23℃ | ISO 179 | 5.5‑7.0 | kJ/m² | |
| Izod Notched Impact | 23℃,1/4" | ISO 180 | 5.5 | kJ/m² | |
| Rockwell Hardness | 23℃ | ISO 2039 | M82(R114) | — | |
| Ball‑Indentation Hardness | 358N,30s | ISO 2039 | 140 | MPa | |
| Thermal Properties | HDT(1.8MPa,annealed) | 1.8MPa,annealed | ISO 75 | 90‑115 | ℃ |
| Melting Point | DSC | ISO 3146 | 162‑172 | ℃ | |
| Vicat Softening Point | 50N | ISO 306 B50 | 150 | ℃ | |
| Max Continuous Service Temp | — | — | 100 | ℃ | |
| Linear Thermal Expansion Coefficient | — | ASTM D696 | 111×10⁻⁵ | K⁻¹ | |
| Electrical Properties | Volume Resistivity | 20℃ | IEC 93 | 10¹³ | Ω·cm |
| Dielectric Strength | 20℃ | IEC 243 | 25 | kV/mm | |
| Dielectric Constant | 20℃,1MHz | IEC 250 | 3.9 | — | |
| Dissipation Factor | 20℃,1MHz | IEC 250 | 85×10⁻⁴ | — | |
| Others | Molding Shrinkage | 24h,4mm | — | 2.1‑2.9 | % |
| UL94 Rating | — | UL94 | HB | — |
Injection Molding Parameters
| Process Stage | Parameter | Reference / Suggestion | Unit | Remarks |
|---|---|---|---|---|
| Pre‑treatment | Drying Temperature | 80‑90 | ℃ | Normally no drying needed if well‑stored; drying recommended for high‑precision parts |
| Drying Time | 2‑4 | h | ||
| Injection | Rear zone | ~150 | ℃ | Reference setting |
| Middle zone | ~180 | ℃ | Reference setting | |
| Front zone | 190‑200 | ℃ | Reference setting | |
| Melt Temperature | 190‑210 | ℃ | For copolymer POM | |
| Nozzle Temperature | ~190 | ℃ | Reference setting | |
| Mold Temperature | 80‑105 | ℃ | ||
| Injection Pressure | 700‑1200 | bar | ||
| Hold‑up Pressure | Lower than injection pressure | MPa | Adjust by part structure | |
| Back Pressure | Low level according to melt status | MPa | Keep low generally | |
| Injection Speed | Medium‑high | — | ||
| Screw Speed | Adjust by equipment & cycle | rpm | ||
| Post‑treatment | Annealing(optional) | 100‑120 | ℃ | To release internal stress, not mandatory |
| Annealing Time | 0.5‑1 per mm wall thickness | h |
Note: All information above is for reference only!
