Type of Polyolefins (PE and PP)
Polypropylene is a thermoplastic polymer obtained from the polymerisation ofpropylene, a by-product of petroleum refining. It is divided into three main groups: Polypropylene copolymer, Polypropylene homopolymer and Polypropylene copolymer random. PP is the basic plastic with the lowest density, between 0.895 and 0.92 g/cm3, and is characterised by its mechanical properties, its high resistance to various acids, chemical solvents, and its dual task as a plastic and as a fibre.
Polypropylene homopolymer (PPH)
Polypropylene homopolymer is a polypropylene obtained from the polymerisation of pure propylene. Its high strength-to-weight ratio, good solubility and easy machinability make it the most common polypropylene. The main use of nPPH is in the chemical industry, due to its high corrosion resistance and good thermal stability.