Offers top global customers Polyurethane Products

Thermoset Urethane vs. Thermoplastic Urethane

Thermoset Urethane vs. Thermoplastic Urethane

2018年9月6日
|

What is the difference between thermoset urethane and thermoplastic urethane? Both can be used for a wide variety of applications in a variety of fields; however, because of their unique properties, each is best suited for specific applications.

  • Thermoset urethane is a polymer which cannot be melted and reformed, and is generally more durable than thermoplastic urethane.
  • Thermoplastic urethane is a polymer which can be melted and reformed, and is elastic and highly flexible, making it a versatile material suitable for use in a wide range of industries.

Below you will find a breakdown of the physical properties and abilities of thermoset urethane and thermoplastic urethane.

 

Abrasion Resistance Properties

 

Abrasion resistance refers to a material’s capacity to resist abrasion during mechanical actions like rubbing or scraping. A high level of abrasion resistance means a material can outwear materials like rubbers, plastics, and metals by greater margins.

  • Thermoset urethane has a high resistance to abrasion, as well as a high level of cut resistance.
  • Thermoplastic urethane is more likely to tear with abrasive applications.

 

Heat Resistance Properties

 

A urethane’s ability to resist heat plays an important role in determining its application.

  • Thermoset urethane performs well in temperatures of up to 250° without issue.
  • Thermoplastic urethane will soften when tested in high temperatures.

 

Hardness Properties

 

The hardness of a urethane is measured in a range of durability, and varies widely from type to type. In fact, urethane can be incredibly soft or hard, depending on its makeup. The scale includes shore OO, which is used to describe extremely soft materials; shore A, the most common scale, is used primarily to describe rubbers and other varieties of elastomer; and shore D, which is used for harder materials like rigid plastics.

  • Thermoset urethane has a wide range of durometers, which are available in both A and D scales.
  • Thermoplastic urethane is softer, and available in a very small range in A scale only.

 

Load Bearing Capacity Properties

 

Load bearing capacity refers to a material’s ability to perform under great weight like high load-bearing wheels, heavy-duty couplings, metal forming pads, shock pads, and machine mounts.

  • Thermoset urethane holds a high weight per square inch.
  • Thermoplastic urethane holds a low weight per square inch.

 

Thermoset Urethane vs. Thermoplastic Urethane

Property

Thermoset Polyurethane

Thermoplastic Urethane

Abrasion Resistance

Best for abrasive applications

because of its high resistance to

abrasion and cutting.

Will tear with abrasive

applications.

Heat

Resistance

Withstands temperatures of up to

250° without problems.

Will soften, deform, and

degrade in temperatures

above 250°.

Hardness

Has a wide range of durometers

available in A & D scales.

Has a very small range in “A”

scale only.

Load

Bearing

Capacity

Able to hold a large amount of

weight per square inch.

Unable to hold a large amount

of weight without destroying

the material.