Polypropylene (PP) 3902300090

Polypropylene (PP) is a thermoplastic polymer obtained by polymerizing propylene. Unlike polyethylene, polypropylene is less dense (density 0.90 g / cm3, which is one of the lowest values ​​for all plastics), harder (resistant to abrasion), more heat-resistant (begins to soften at 140 ° C, melting point 175 ° C), hardly undergoes stress corrosion cracking. Possesses high sensitivity to light and oxygen (sensitivity decreases with the introduction of stabilizers). Polypropylene is a chemically resistant material.

Polypropylene has a higher melting point than polyethylene, and therefore a higher decomposition point. The maximum operating temperature of polypropylene is 120-140 ° C. All polypropylene products can withstand boiling, and can be sterilized by steam without any change in their shape or mechanical properties.

Exceeding polyethylene in heat resistance, polypropylene is inferior to it in frost resistance. Its brittleness (frost resistance) temperature ranges from -5 to -15 ° C. Frost resistance can be increased by introducing ethylene units into the macromolecule of isotactic polypropylene (for example, when copolymerizing propylene with ethylene).

Our company offers:

• homopolypropylene ,
• block copolymer of polypropylene,
• random copolymer of polypropylene.

We supply various grades of polypropylene for blow molding, slot (cast) extrusion , injection molding, blow molding,