Polypropylene (PP) is a semicrystalline thermoplastic polymer characterized by a high breaking load, low density, good chemical, thermal and abrasion resistance. It is an easy to process product and relatively cheap compared to other polymers. Due to its high crystallinity, polypropylene is usually presented opaque white or colored with pigments. Polypropylene can degrade at the molecular level if exposed to UV radiation, through a degradation mechanism that determines the formation of free radicals that react with the oxygen in the air, breaking the polypropylene chain. From a macroscopic point of view, degraded PP shows cracks that increase in extension and depth as the exposure time advances. For outdoor applications, UV stabilizing or absorbing additives must therefore be used in polypropylene; carbon black also has a good effectiveness in stabilizing polypropylene for exteriors.
The PP can be divided into three main groups:
It is also possible to compound the PP with the addition of modifiers (glass fibers, glass spheres, mineral fillers) which improve some technical characteristics allowing to obtain products more suited to specific applications.
PP qualitative properties: it is an economic resin with good impact resistance according to the grades; PP homopolymer can prove fragile at low temperatures, while copolymers are more resistant to impact. PP is wear-resistant, flexible and can withstand very high elongation before breaking. It also shows excellent chemical resistance to acids and alkaline substances.
Applications:
Natural or Compound types of colored and filled PP COPO (RAL, Pantone or sample references) for injection molding.
Available in various versions:
or, if possible, with a combination of the above characteristics.
Coloring : Full Compound or Dry Blend (SPL).
Natural or Compound types of colored and filled PP HOMO (RAL, Pantone or sample references) for injection molding.
Available in various versions:
or, if possible, with a combination of the above characteristics.
Coloring : Full Compound or Dry Blend (SPL).
Colored PP Compound (available in a limited range of colors) with improved flame resistance for injection molding, filled with 20% talc.
Coloring : Full Compound or Dry Blend (SPL).
The chart shows the various types of products we are present on the market with:
PP chemical formula: (C3H6)n
PP chemical name (IUPAC): Poly(propene)
CAS Number: 9003-07-0
PP recycling code: Number 5
Custom tariff: 39021000
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