Sacos de polipropileno

Polypropylene

It is a thermoplastic that has a series of properties that are difficult to find in other materials, such as: Its high thermal stability allows it to work for a long time at a temperature of 100 °C in air.


It is also resistant to boiling water and can be sterilized at temperatures up to 140°C without fear of deformation.

AdvantagesTypical Applications
LightweightTank and deposits for chemicals
High resistance to tension and compressionLab furniture
Excellent dielectric propertiesPressure plates for filters
Resistance to most acids and alkalisComponents for pumps
Low coefficient of moisture absorptionProsthetics, etc. Not toxic
Not stain

Main properties of polypropylene

Property
-Dielectric constant @1MHZ 2.2-2.6
-Dissipation factor at 1 MHZ 0.0003- 0.0005
-Dielectric strength (KV mm-1) 30-40
-Surface resistivity (Ohm/sq)
-Volume resistivity at ^C (Ohmcm)
ELECTRICAL
-Water absorption- Balance% 0.3
-Density (gcm-3) 0.9
-Refractive index 1.49
– Limit oxygen index (%) 18
-Combustible Flammability
-Acceptable Ultraviolet Resistance
PHYSICAL
-Elongation at break (%)
-Coefficient of friction
-Hardness-Rockwell
-Modulus of traction (GPa)
-Resists Abrasion ASTM D1044
-Tensile Resistance (MPa)
-Izod impact resistance (Jm-1)
MECHANICAL
-Specific heat (JK-1 kg-1)
-Coefficient of thermal expansion (x10-6 K-1)
-Thermal conductivity at 23C (Wm-1 K-1)
-Maximum operating temperature (°C) 90-120
-Minimum operating temperature (°C) 10-60
-Hot deflection temperature -0.45 MPa (°C) 100-105
THERMAL
-Concentrated acids- Good
-Dilute Acids – Good
-Alkalis- Good
-Alcohols- Good
-Ketones- Good
-Fats and oils- Good
-Halogens- Poor
-Aromatic Hydrocarbons
CHEMICALS

Polypropylene processes

They can be classified, depending on the reaction medium and the operating temperature, into three types:

  1. Solution processes
  2. Processes in suspension
  3. Gas phase processes

Product applications

An endless number of different polypropylene products can be prepared from industrial processes, whose properties vary according to the length of the polymer chains (molecular weight), its polydispersity, the comonomers eventually incorporated, etc. These basic characteristics define the mechanical properties of the material and its final applications. Literally speaking of different types or grades of polypropylene.

  • Auto parts
  • Buckets, containers, bottles
  • Furniture
  • Toys
  • Food Packaging Films
  • Fibers and filaments
  • Bags and handbags
  • Carpet background
  • Diapers, sanitary napkins, clothing, etc.

Main global demand

RegionPercentage
Asia Pacific64.2%
Oriental Europe11.6%
North America11.6%
Eastern Europe8.4%
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