Advantages of Polyurethane

The following are some of the advantages of Polyurethane over other resins:

  • Increased strength
  • Improve transverse properties
  • Elimination of mats reduces costs
  • Highest fiber volume fraction
  • Higher specific strength and stiffness
  • Increased part complexity potential
  • Reduced wall thicknesses
  • Stronger profiles spanning greater distances
  • Excellent impact resistance
  • Excellent abrasion resistance
  • Superior fabrication and fastening results
  • Significantly higher screw pull out strength
  • Excellent corosion resistance.
  • Aliphatic, light stable resin
  • High Tg resin available. – Tg > 280 C !
  • 10 % biobased standard resin – soybean-based resins also available
  • No styrene, no peroxides

Mechanical Properties of Resin Sytems

Mat / Roving
Vinyl Ester
Mat / Roving
Tensile StrengthGoodBetterBest
Tensile ModulusGoodBetterBest
Compressive StrengthGoodBetterBest
Compressive ModulusGoodGoodBest
Flexural ModulusGoodBetterBest
Interlaminar ShearGoodBetterBest
Notched Izod ImpactGoodBetterBest