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 Polypropylene Plastics           Back to Sheets

       Polypropylene plastic comes in two polymerized forms: copolymer and homopolymer polypropylene. Polypropylene is a stable plastic that can have a prolonged use at elevated temperatures, exposure to UV light, and improved flame retardancy.

  • Good balance of chemical, electrical, and thermal properties with decent strength.
  • Polypropylene's hard, high gloss surface make it ideal for environments were bacteria buildup is a concern.
  • Polypropylene is used extensively in electrical applications, due to it's excellent dielectric strength and arc resistance.
  • Applications in which polypropylene are used include scrub stations, piping, tank covers, glove boxes, water pumps, battery cases, cutting boards, bottling machines, animal feeders, radio/TV equipment, laboratory equipment, photographic processing equipment, playground equipment, packaging, irrigation, and machine cases.

 

Specifications:

 

Properties and Types of Polypropylene
Properties HPP HPP-filled CPP CPP-filled
Specific gravity 0.090-0.091 0.97-1.27 0.89-0.91 0.98-1.24
Water absorption (%) 0.01-0.03 0.01-0.09 0.03 0.01-0.02
Tensile strength (psi) 4,500-6,000 3,500-16,000 4,000-5,500 2,500-10,000
Elongation at break (%) 100-600 1.5-80 200-500 2.2-50
Tensile modulus (psi) 16,500-22,500 37,500-100,000 13,000-18,000 5,000-35,000
Flexural modulus (psi) 17,000-25,000 21,000-100,000 13,000-20,000 21,000-96,000
Impact strength, Izod (ft-lb/in of notch) 0.4-1.4 0.6-12 1.1-14 0.6-4.0
Hardness, Rockwell R 80-102 75-117 65-96 81-105
Thermal conductivity (10^-4 cal-cm/sec-cm^2-C) 2.8 2.4-9.0 3.5-4.0 3.0-9.0
Coefficient of thermal expansion 8.0-10.0 1.5-5.0 6.0-10.0 2.0-6.0
Deflection temperature (F)  
          At 264 psi 120-140 130-330 120-140 116-280
          At 66 psi 225-250 220-300 185-220 170-305
UL flammability rating HB HB HB HB

*Information provided by IAPD