Plastic Granules
CNPC RP340R Medical Grade Polypropylene (PP)
CNPC RP340R is a high-performance, medical-grade polypropylene (PP) random copolymer. It is a nucleated resin specially designed for high-precision injection molding and injection stretch blow molding (ISBM) applications. For Disposable Sterile Syringe Barrels.
Associated Documents
TDS - Data Sheet
Typical property data
Physical Properties
Melt Flow Rate: 34 g/10 min (ISO 1133 / GB/T 3682, 230°C/2.16 kg)
Density: 0.905 g/cm³ (ISO 1183 / GB/T 1033)
Ash Content: ≤0.03% (ISO 3451 / GB/T 9345.1)
Molding Shrinkage: 1.2–1.8% (ISO 294-4 / GB/T 17037.4)
Mechanical Properties
Tensile Stress at Yield: ≥25.0 MPa (ISO 527-2 / GB/T 1040.2)
Tensile Strain at Break: ≥500% (ISO 527-2 / GB/T 1040.2)
Flexural Modulus: ≥1000 MPa (ISO 178 / GB/T 9341)
Izod Notched Impact Strength, 23°C: ≥4.0 kJ/m² (ISO 180 / GB/T 1843)
Thermal Properties
Vicat Softening Temperature: 130°C (ISO 306 / GB/T 1633)
Melting Temperature: 145–155°C (DSC)
Optical Properties
Haze: ≤10% (ASTM D1003 / GB/T 2410)
Processing Parameters
Melt Temperature: 200–250°C
Mold Temperature: 20–50°C
Injection Pressure: 70–120 MPa
Holding Pressure: 30–60 MPa
Screw Speed: 40–80 rpm
Drying: Not required; if humid, dry at 60–80°C for 1–2 h
Use & Applications
- Disposable Sterile Syringe Barrels (5 mL/10 mL/20 mL)