Polypropylene (PP) Datasheet (General Overview)
Chemical Structure:
- Polymer Type: Thermoplastic polymer
Physical Properties:
- Density: 0.89 – 0.91 g/cm³
- Melting Point: 160 – 166°C (320 – 331°F)
- Water Absorption: < 0.01%
Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength | 30 – 40 MPa (4,350 – 5,800 psi) |
| Yield Strength | 25 – 35 MPa (3,600 – 5,075 psi) |
| Elongation at Break | 500 – 1,000% |
| Young’s Modulus | 1,500 – 2,500 MPa (218,000 – 362,500 psi) |
| Hardness (Rockwell R) | 70 – 110 |
Thermal Properties:
- Glass Transition Temperature (Tg): -20 to -10°C (-4 to 14°F)
- Heat Deflection Temperature (HDT): 60 – 100°C (140 – 212°F)
- Coefficient of Thermal Expansion: 100 – 150 x 10^(-6) /°C
Electrical Properties:
- Dielectric Strength: 40 – 60 kV/mm
- Volume Resistivity: 10^16 – 10^18 ohm·cm
Chemical Resistance:
- Resistant to acids, bases, and most organic solvents.
- Sensitive to some aromatic hydrocarbons.
Additional Features:
- Machinability: Polypropylene is easily machined and fabricated.
- Weldability: Suitable for various welding methods, including hot plate welding and ultrasonic welding.
- UV Resistance: PP has good resistance to UV radiation.
Applications:
- Packaging: PP is widely used in packaging materials, including containers, bottles, and films.
- Automotive Parts: Bumpers, interior components, and various automotive applications.
- Medical Devices: Laboratory equipment, medical containers, and disposable syringes.
- Consumer Goods: Furniture, toys, and various household items.
- Industrial Applications: Pipes, fittings, and various components in industrial settings.