PA12 EMS‑CHEM TR‑55
PA12 EMS‑CHEM TR‑55 Resin
Material Introduction: PA12 EMS‑CHEM TR‑55 is a transparent polyamide 12 material. It features high transparency, favorable mechanical properties, excellent chemical stability, low water‑absorption and food‑contact compliance, and is widely applied in multiple high‑demanding industrial fields.
Main Applications
Optical applications: Optical lenses, spectacle frames, transparent housings, sensor windows and other parts.
Packaging industry: Cosmetic packaging, medical packaging, films, bottles, benefited from its transparency and food‑contact compliance.
Electronic‑electrical industry: Housings for electronic devices, electrical assemblies, wire‑and‑cable sheaths, connectors, relying on electrical insulation and flame‑retardant performance.
Automotive industry: Automotive interior parts, pipe fittings, pneumatic tubing.
Industrial applications: Pipe fittings, engineering fittings, hydraulic system components.
Medical devices: Medical / healthcare articles, medical‑device housings and assemblies, supported by chemical stability and sterilization capability.
Performance Parameters
| Performance Category | Test Item | Typical Value / Range | Test Standard / Condition Description | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Physical Properties | Density | 1.06 g/cm³ | ISO 1183 | Transparent PA12 grade |
| Saturated Water Absorption (23℃) | 3.5 % | ISO 62 | ‑ | |
| Equilibrium Water Absorption (23℃,50%RH) | 1.5 % | ISO 62 | ‑ | |
| Molding Shrinkage (flow direction) | 0.60 % | ISO 294‑4 | ‑ | |
| Molding Shrinkage (cross‑flow direction) | 0.70 % | ISO 294‑4 | ‑ | |
| Mechanical Properties | Tensile Modulus | 2200 MPa | ISO 527‑2 | ‑ |
| Tensile Stress at Yield | 75.0 MPa | ISO 527‑2 | ‑ | |
| Tensile Strain at Yield | 7.0 % (dry), 9.0 % (conditioned) | ISO 527‑2 | Property changes after moisture conditioning | |
| Nominal Tensile Elongation at Break | ＞50 % | ISO 527‑2 | High ductility | |
| Ball‑Indentation Hardness (conditioned) | 120 MPa | ISO 2039‑1 | ‑ | |
| Impact Properties | Charpy Notched Impact Strength (23℃) | 7.0 kJ/m² (dry), 8.0 kJ/m² (conditioned) | ISO 179/1eA | ‑ |
| Charpy Un‑notched Impact Strength (23℃) | No break | ISO 179/1eU | Excellent unnotched toughness | |
| Thermal Properties | Heat‑Distortion Temperature (1.8 MPa, unannealed) | 130 °C | ISO 75‑2/A | ‑ |
| Heat‑Distortion Temperature (0.45 MPa, unannealed) | 145 °C | ISO 75‑2/B | ‑ | |
| Glass Transition Temperature | 160 °C | ISO 11357‑2 | ‑ | |
| Long‑term Continuous Service Temperature | 80‑100 °C | Internal method | ‑ | |
| Short‑term Continuous Service Temperature | 120 °C | Internal method | ‑ | |
| Coefficient of Linear Thermal Expansion (flow / cross‑flow) | 8.0×10⁻⁵ cm/cm/℃ | ISO 11359‑2 | ‑ | |
| Electrical Properties | Volume Resistivity | 1.0×10¹³ Ω·cm | IEC 60093 | ‑ |
| Surface Resistivity | 1.0×10¹² Ω | IEC 60093 | ‑ | |
| Dielectric Strength | 31 kV/mm | IEC 60243‑1 | ‑ | |
| Comparative Tracking Index(CTI) | 600 V | IEC 60112 | High tracking‑resistance | |
| Optical Properties | Appearance | Clear / Transparent | Visual inspection | Transparent grade |
| Flammability | UL94 Rating (0.8 mm) | HB | IEC 60695‑11‑10,‑20 | Non‑V‑0 flame‑retardant grade |
Injection Molding Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Critical operation. Material is moisture‑sensitive. Sufficient drying before processing is mandatory, otherwise hydrolytic degradation will occur and impair product quality and performance. |
| Drying Temperature | 85 °C | Dehumidifying dryer is recommended. |
| Drying Time | 4‑5 h | Required for material exposed to ambient air; 3 h temperature‑balancing for hermetically‑stored material. Keep moisture content below 0.1%. |
| Barrel Temperature | ‑ | ‑ |
| Rear zone (feed zone) | ‑ | ‑ |
| Middle zone | ‑ | ‑ |
| Front zone | ‑ | ‑ |
| Melt Temperature | 240‑300 °C | Do not exceed 310 °C for standard‑formula material. |
| Mold Temperature | 30‑100 °C | Unreinforced grade:30‑40 °C; Thin‑wall / large‑area parts:80‑90 °C; Reinforced grade:90‑100 °C. Precise mold‑temperature control is essential for PA12. Higher temperature increases crystallinity. |
| Injection Pressure | Up to 1000 bar | Low holding‑pressure together with high melt‑temperature is suggested. |
| Injection Speed | High speed | More favorable for glass‑filled grades. |
| Runner & Gate | ‑ | Runner diameter approx.30 mm, full‑round runner profile. Keep gate as short as possible. Submarine gate with minimum diameter 0.8 mm is recommended. |
Extrusion Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Equally critical; same drying requirements as injection molding. |
| Drying Temperature | 85 °C | ‑ |
| Drying Time | 4‑5 h | Keep moisture content below 0.1%. |
| Extruder Temperature Setting | ‑ | Adjust according to specific equipment, products and grades. |
| Zone 1 (feed zone) | ‑ | ‑ |
| Zone 2 (compression zone) | ‑ | ‑ |
| Zone 3 (metering zone) | ‑ | ‑ |
| Head Temperature | ‑ | ‑ |
| Die Temperature | ‑ | ‑ |
| Melt Temperature | ‑ | ‑ |
Disclaimer: All above data is for reference only.
