PA12 EMS‑CHEMIE TR55LX
PA12 EMS‑CHEMIE TR55LX Resin
Material Introduction: PA12 EMS‑CHEMIE TR55LX is a low‑viscosity injection‑molding‑specialized PA12 grade optimized for thin‑wall complex structural components. It delivers ultra‑high flowability, extremely low moisture absorption & excellent dimensional stability, outstanding flexibility and fatigue resistance, chemical inertness and high cleanliness.
Main Applications
Medical interventional devices (core application): Endoscopic biopsy forceps joints, vascular guidewire tips, minimally‑invasive surgical instrument housings.
Precision electronic connectors: 4 mm‑pitch Type‑C connector housings, FPC/FFC flexible‑circuit latches (UL94 V‑0 flame retardant).
Automotive fluid‑management systems: Turbocharger air‑pipe quick‑connect joints, fuel‑evaporation system valves (ethanol‑gasoline resistant).
Sports‑equipment safety parts: Ski‑boot buckles, carabiner safety pins (low‑temperature anti‑brittle‑fracture performance).
Food‑contact components: Coffee‑machine high‑pressure gaskets, baby‑bottle buckles (compliant with FDA 21 CFR 177.1500).
Performance Parameters
| Performance Category | Test Item | Test Standard | Unit | Typical Value | Remarks & Interpretation |
|---|---|---|---|---|---|
| Basic Physical Properties | Density | ISO 1183 | g/cm³ | 1.01‑1.02 | Low‑viscosity injection PA12 |
| Water Absorption (23℃ / 50%RH) | ISO 62 | % | 0.6‑0.7 | Low‑moisture‑absorption characteristic | |
| Saturated Water Absorption | ISO 62 | % | 1.2‑1.4 | ‑ | |
| Mechanical Properties | Tensile Strength | ISO 527 | MPa | 45‑50 | ‑ |
| Elongation at Break | ISO 527 | % | 250‑300 | High‑flexibility grade | |
| Flexural Modulus | ISO 178 | MPa | 1100‑1200 | ‑ | |
| Notched Charpy Impact Strength (23℃) | ISO 179/1eA | kJ/m² | 55‑65 | Excellent toughness | |
| Thermal Properties | Melting Point (DSC) | ISO 11357 | ℃ | 176‑179 | ‑ |
| Heat‑Distortion Temperature (0.45 MPa) | ISO 75 | ℃ | 130‑135 | ‑ | |
| Continuous Service Temperature | ‑ | ℃ | ‑40~+100 | Wide operating temperature range | |
| Electrical Properties | Volume Resistivity | IEC 60093 | Ω·cm | 10¹⁵ | Good insulation performance |
| Dielectric Strength | IEC 60243‑1 | kV/mm | 35‑40 | ‑ | |
| Chemical & Safety Properties | UL94 Rating | UL 94 | ‑ | HB (1.0 mm) | Non‑flame‑retardant grade |
| Biocompatibility | ISO 10993 | ‑ | Compliant | Suitable for medical‑contact parts |
Injection Molding Parameters
| Processing Step | Parameter Range | Key Control Points |
|---|---|---|
| Drying | 80 ℃ × 4‑6 h | Dew point ≤‑30℃, moisture content＜0.02%. |
| Barrel Temperature | Rear zone：180‑200 ℃ | Prevent thermal‑oxidation; nitrogen protection is recommended. |
| Middle zone：200‑220 ℃ | ‑ | |
| Front zone / Nozzle：210‑230 ℃ | Temperature＞240 ℃ triggers molecular‑chain degradation. | |
| Mold Temperature | 40‑70 ℃ | Mold temperature＞80 ℃ reduces crystallinity and impairs dimensional accuracy. |
| Injection Speed | High speed | Avoid short shots caused by melt‑front cooling. |
| Holding Pressure | 30‑50% of injection pressure | Low holding‑pressure for high‑flow grade to prevent flash. |
| Screw Design | L/D=18‑22, compression ratio 2.0 | Avoid over‑sheating; screw speed ≤80 rpm. |
| Hot‑runner System | Valve‑gate type recommended | Prevent drooling; decompression before mold‑opening. |
Disclaimer: All above data is for reference only.
