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Properties of Polyurethane

Properties of Polyurethane

Polyester & Polyether Urethane Properties

The two main types of Polyurethanes are Polyester and Polyether. Each offers its own performance properties. Below are typical properties for both types of Polyurethane.

Benefits And Properties Of Ester And Ether Formulations

Ester

  • Solvent Resistant
  • Oil Resistance
  • Sliding Abrasion Resistance
  • Excellent Mechanical Properties
  • Resistance to Heat Aging
  • Vibration Dampening
  • Higher Split Tear Strength
  • MDI & TDI Food Grade Applications

Ether

  • Superior Rebound Properties
  • Low-Temperature Flexibility
  • Excellent Hydrolytic Stability
  • MDI & TDI Food Grade Applications
  • Excellent Mechanical Properties
  • Resistance to Dynamic Heat
  • Impingement Abrasion Resistance

Advantages Of MDI & TDI Urethane Properties

PROPERTYMORE ADVANTAGESLESS ADVANTAGES
Tear StrengthMDI & TDI PolyesterMDI & TDI Low Cost Polyether
Abrasion Resistance: ImpingementMDI PolyetherLow Cost Polyether
Compression SetTDI Polyester & PolyetherMDI Polyester & Polyether
Tensile (Tension) StrengthMDI & TDI PolyesterMDI & TDI Polyether
ReboundMDI PolyetherTDI Polyester
Abrasion Resistance: SlidingMDI & TDI PolyesterLow Cost Polyether
Low Temperature PropertiesMDI PolyetherTDI Polyester
Hydrolysis (Reaction With Water) ResistanceMDI PolyetherTDI Polyester
High Temperature PropertiesTDI Polyester & PolyetherMDI Polyester & Polyester
Oil ResistanceTDI & MDI PolyesterTDI & MDI Polyether
Heat AgingMDI & TDI PolyesterLow Cost Polyether
Heat BuildupTDI & MDI PolyetherTDI & MDI Polyester

Benefits And Advantages Of Choosing Polyurethane Over Other Materials

The Benefits Of Polyurethane Over Rubber Are:

  • Abrasion Resistance
  • Tensile Strength
  • Higher Load-bearing Capacity
  • Superior tolerance to grease, oil, oxygen and ozone
  • Non-marring of products
  • Water resistance 
  • Low permanent set-a/k/a rebound

The Benefits Of Polyurethane Over Metal Are:

  • Sound dampening - It absorbs noise & vibration.
  • Lighter in weight.
  • Elastomeric - Can be compresssed up to 25% of its normal size and still rebound.
  • Abrasion & corrosive resistance - Out performs in a variety of applications, including water & chemical environments.
  • Non-marring when it comes into contact with other objects.

The Benefits Of Polyurethane Over Plastic Are:  

  • Noise reduction
  • Abrasion/impact resistance
  • Ability to stretch and return to its original form
  • Self healing
  • Chemical resistance is greater
  • Broader range of formulations and durometers(hardness) 

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