Materials

PS (Polystyrene Crystal)

Crystal polystyrene is the cheapest thermoplastic available. It has properties to match its price. It is transparent and has good optical properties. It has very low impact strength.

CerteneHivalPolystyrolStyron

Typical Properties

Tensile Strength5,000-7,500 psi
Flexural Modulus380,000-480,000 psi
Impact Strength.35-.45 ft-lb/in notched izod
Max Temperature100°-150° F
Chemical ResistancePoor

Applications

  • Household goods
  • Containers
  • Furniture
  • Housings
  • Packaging

Advantages

  • + Optical clarity
  • + High gloss
  • + FDA grades available
  • + Low cost
  • + Good dimensional stability
  • + Good rigidity

Disadvantages

  • − Flammable, but flame retardant grades available
  • − Poor solvent resistance
  • − Homopolymers are brittle
  • − Subject to stress and environmental cracking
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