Chemical Raw Material
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PP Polypropylene

PP Polypropylene

Polypropylene (PP) is a versatile thermoplastic polymer produced from propylene monomers. Renowned for having the lowest density among commodity plastics (approx. $0.90\text{--}0.91\text{ g/cm}^3$), PP offers an exceptional balance of chemical resistance, high heat tolerance (melting point at $160\text{--}170^\circ\text{C}$), superior flexural fatigue resistance ("living hinge" property), and high tensile strength.

Parameter Typical Value Range Test Method Remarks / Conditions
Density 0.90 - 0.91 g/ ISO 1183 Lowest among standard thermoplastics
Melt Flow Rate (MFR) 0.3 - 1200 g/10min ISO 1133 Tested at 230^\circ\text{C} / 2.16\text{ kg}
Flexural Modulus 1100 - 800 MPa ISO 178 Higher stiffness in PP-H grades
Tensile Yield Strength 28 - 40 MPa ISO 527 Excellent strength-to-weight ratio
Izod Impact Strength 2.0 - 40 kJ/㎡ ISO 180 Significantly higher in PP-B grades
Heat Deflection Temp (HDT) 85 - 15℃(0.45 MPa) ISO 75 Autoclavable / Steam-sterilization ready
Melting Point 160 - 70℃ DSC High thermal stability