PA11 Wuxi Yinda 11
PA11 Wuxi Yinda 11 Resin
Material Introduction: PA11 Wuxi Yinda 11 is a long‑carbon‑chain polyamide. With its unique set of properties, it is applied in multiple high‑demanding industrial fields.
Main Applications
Automotive industry: One of the most important application fields for PA11. Mainly used for automotive fuel hoses, brake hoses, high‑pressure hoses (e.g. clutch hydraulic hoses), vacuum hoses. Its oil resistance, flexibility, fatigue‑crack resistance and favorable sealing performance are fully demonstrated in these applications.
Mechanical & hydraulic systems: Hoses and wear‑resistant parts for hydraulic transmission systems, capable of bearing certain pressure with good mechanical performance.
Cable sheaths: Protective materials for submarine optical‑fiber and power cables, as well as wire‑and‑cable jackets requiring excellent arc‑resistance and electrolytic‑corrosion resistance.
Military equipment: Gun stocks, grips, trigger guards, parachute covers and other components. It withstands harsh environments including humidity, drought, severe cold, high temperature, dust, seawater and salt‑laden air.
Fluid‑transport pipelines: Buried gas pipelines featured by light weight, easy handling and direct‑bondable joints.
Others: PA11 powder for fabric coating, casings (non‑toxic, high strength, wear‑resistant, low gas permeability), films and other products.
Performance Parameters
| Performance Category | Test Item | Typical Value / Range | Test Standard / Condition Description | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Physical Properties | Density | 1.04‑1.05 g/cm³ | ‑ | Long‑carbon‑chain polyamide |
| Water Absorption (24h) | 0.1‑0.4 % | ‑ | Low‑moisture‑absorption nylon | |
| Molding Shrinkage | 1.0‑2.3 % | ‑ | For unfilled grade; shrinkage drops significantly for reinforced grades | |
| Mechanical Properties | Tensile Strength | 47‑58 MPa | ‑ | ‑ |
| Flexural Strength | ~1040 kgf/cm² (101.9 MPa) | ‑ | ‑ | |
| Impact Strength | ~3.9 kgf·cm/cm² (38.2 J/m) | ‑ | ‑ | |
| Rockwell Hardness | R108 | ‑ | ‑ | |
| Thermal Properties | Melting Point | 186‑187 °C | ‑ | ‑ |
| Heat‑Distortion Temperature (1.82 MPa) | 48‑55 °C | ‑ | Unreinforced grade | |
| Long‑term Service Temperature | -40 °C ~ 130 °C | ‑ | Wide service‑temperature window | |
| Electrical Properties | Arc Resistance | Excellent | ‑ | ‑ |
| Chemical Properties | Oil Resistance | Outstanding | ‑ | Core advantage for hose applications |
| Resistance to Acids, Alkalis & Oxidants | Good | ‑ | Resists general acids, alkalis and oxidants | |
| Solvent Resistance | Good | ‑ | Insoluble in common solvents; soluble only in m‑cresol and few special media |
Injection Molding Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Critical procedure |
| Drying Temperature | 80‑90 °C | Dehumidifying dryer recommended |
| Drying Time | 3‑6 h | Keep moisture content below 0.2 % |
| Barrel Temperature | ‑ | ‑ |
| Rear zone (feed zone) | 195‑230 °C | ‑ |
| Middle zone | 210‑240 °C | ‑ |
| Front zone | 235‑245 °C | ‑ |
| Nozzle Temperature | 235‑265 °C | Self‑locking nozzle is suggested to prevent drooling |
| Melt Temperature | 250‑310 °C | Generally no lower than 250 °C |
| Mold Temperature | 35‑100 °C | Common setting:80‑120 °C. Higher mold temperature brings higher crystallinity & larger shrinkage; lower mold temperature brings lower crystallinity, better toughness and smaller shrinkage. |
| Injection Pressure | 600‑2100 kg/cm² (approx.58‑206 MPa) | ‑ |
| Holding Pressure | ‑ | 50%‑80% of injection pressure |
| Screw Speed | 50‑120 rpm | Medium speed, avoid shear overheating |
| Back Pressure | 5‑10 kg/cm² (approx.0.5‑1.0 MPa) | ‑ |
Extrusion Process Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Equally critical, same requirements as injection molding |
| Drying Temperature | 80‑90 °C | ‑ |
| Drying Time | 3‑6 h | Keep moisture content below 0.2 % |
| Extruder Temperature Setting | ‑ | ‑ |
| Zone 1 (feed zone) | 210‑230 °C | ‑ |
| Zone 2 (compression zone) | 230‑250 °C | ‑ |
| Zone 3 (metering zone) | 235‑255 °C | ‑ |
| Head Temperature | 230‑250 °C | ‑ |
| Die Temperature | 225‑245 °C | ‑ |
| Melt Temperature | 230‑260 °C | ‑ |
| Screw Speed | Adjust per extruder and product dimension | e.g.10‑50 rpm for pipe production |
| Cooling Method | Water cooling or air cooling | Sufficient cooling for shape setting |
Disclaimer: All above data is for reference only.
