Characteristics of polypropylene (PP)
Polypropylene resin is the lowest density of general-purpose plastics, has good mechanical properties, good rigidity, wear resistance, high hardness, good heat resistance, poor cold resistance, no water absorption, good chemical stability, but not resistant to sunlight. Poor thermal stability; flammable, oily smell when burning; good electrical insulation, voltage resistance, transparent film, poor penetration of air and water vapor; good for forming film, silk and other products, but dyeing, printing , poor adhesion.
