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

PROPERTY	MORE ADVANTAGES	LESS ADVANTAGES
Tear Strength	MDI & TDI Polyester	MDI & TDI Low Cost Polyether
Abrasion Resistance: Impingement	MDI Polyether	Low Cost Polyether
Compression Set	TDI Polyester & Polyether	MDI Polyester & Polyether
Tensile (Tension) Strength	MDI & TDI Polyester	MDI & TDI Polyether
Rebound	MDI Polyether	TDI Polyester
Abrasion Resistance: Sliding	MDI & TDI Polyester	Low Cost Polyether
Low Temperature Properties	MDI Polyether	TDI Polyester
Hydrolysis (Reaction With Water) Resistance	MDI Polyether	TDI Polyester
High Temperature Properties	TDI Polyester & Polyether	MDI Polyester & Polyester
Oil Resistance	TDI & MDI Polyester	TDI & MDI Polyether
Heat Aging	MDI & TDI Polyester	Low Cost Polyether
Heat Buildup	TDI & MDI Polyether	TDI & 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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