PA12 UBE 3020U
PA12 UBE 3020U Resin
Material Introduction: PA12 UBE 3020U is a special‑grade polyamide‑12 resin developed for high‑transparency medical and optical components. It features optical‑grade transparency, medical‑grade biological inertness and gamma‑irradiation resistance.
Main Applications
Transparent medical‑device components (core application): Hemodialyzer housings, three‑way valves for infusion tubes, endoscope optical windows (resistant to sodium hypochlorite immersion).
Life‑science consumables: PCR plates, observation windows of cell‑culture dishes (UV transmission down to 280 nm).
Optical‑instrument structural parts: Lens holders for laser rangefinders, light‑guide plates for AR glasses (refractive index 1.53, Abbe number 55).
Food‑contact transparent parts: Water‑level sight windows for coffee machines, graduated tubes for baby bottles (compliant with FDA 21 CFR 177.1500).
Industrial liquid‑viewing systems: Hydraulic‑oil level tubes, chemical‑reagent flowmeters (resistant to DMSO / isopropanol).
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 | High‑transparent PA12 |
| Water Absorption (23℃/24h) | ISO 62 | % | 0.3‑0.4 | ‑ | |
| Optical Properties | Light Transmittance (2 mm thickness) | ASTM D1003 | % | 91‑92 | ‑ |
| Haze | ASTM D1003 | % | 1.2‑1.5 | ‑ | |
| Refractive Index (589 nm) | ISO 489 | ‑ | 1.53 | ‑ | |
| Mechanical Properties | Tensile Strength | ISO 527 | MPa | 48‑52 | ‑ |
| Flexural Modulus | ISO 178 | MPa | 1100‑1200 | ‑ | |
| Notched Charpy Impact Strength (23℃) | ISO 179/1eA | kJ/m² | 50‑60 | High‑toughness grade | |
| Thermal & Chemical Properties | Vicat Softening Point | ISO 306 | ℃ | 140‑145 | ‑ |
| Gamma‑Irradiation Resistance (50 kGy) | ISO 11137 | ΔYI | ＜2.0 | Low yellowing after gamma sterilization | |
| Sodium Hypochlorite Resistance (5000 ppm) | ISO 1817 | % strength retention | ＞90% (7 days) | Resistant to disinfectant immersion |
Injection Molding Parameters
| Processing Step | Parameter Range | Key Control Points |
|---|---|---|
| Drying | 80 ℃ × 6 h vacuum drying | Moisture content ≤0.01%, dew point ≤‑40℃. |
| Barrel Temperature | Rear zone：190‑200 ℃ | Temperature＞220 ℃ causes thermal yellowing. |
| Middle zone：200‑210 ℃ | ‑ | |
| Front zone / Nozzle：210‑220 ℃ | Actual melt temperature ≤225 ℃. | |
| Mold Temperature | 60‑80 ℃ | Mold temperature＜50 ℃ leads to insufficient crystallization and reduced transparency. |
| Injection Speed | Medium speed (40‑60% of maximum rate) | High speed generates shear heat and increases haze. |
| Holding Pressure | 20‑40% of injection pressure | High pressure induces molecular orientation and higher birefringence. |
| Screw Design | Low‑shear gradual‑type | Compression ratio 1.8‑2.0, L/D=18‑20. |
Extrusion Processing Parameters
| Parameter Item | Sheet / Film | Pipe |
|---|---|---|
| Extruder L/D | ≥30:1 | ≥25:1 |
| Melt Temperature | 210‑220 ℃ | 215‑225 ℃ |
| Die Temperature | 215 ℃ | 220 ℃ |
| Cooling‑roll Temperature | 70‑80 ℃ | Vacuum sizing water temperature 40‑50 ℃ |
Disclaimer: All above data is for reference only.
