Aliphatic and Aromatic Polyurethane membrane Difference (2023)

Difference Between Aliphatic and Aromatic Polyurethane membrane

  • Compared to aromatic polyurethanes, aliphatic polyurethanes are less hazardous.
  • The skin is less irritated by aliphatic polyurethanes than by aromatic polyurethanes.
  • Since they have a lower molecular weight than aromatic polyurethanes and hence don’t require as much rinsing or scrubbing after use, aliphatic polyurethanes are easier to clean up.
  • Because they are made from renewable resources like vegetable oil rather than petroleum products like benzene, do not contain solvents like xylene, and do not require heat curing, aliphatic polyurethane finishes tend to be more environmentally friendly than aromatic finishes. This saves energy and lowers air pollution in manufacturing facilities.
  • Because it is resistant to fading and discoloration brought on by exposure to sunshine, aliphatic polyurethane is frequently used for applications that need strong UV stability, such as outdoor coatings.
  • When compared to aliphatic polyurethane, aromatic polyurethane is often less costly and has greater mechanical qualities like hardness and abrasion resistance. It can fade over time when exposed to sunshine and is less UV-resistant than aliphatic polyurethane
Aliphatic and Aromatic
Aliphatic and Aromatic

Aliphatic polyurethane has several benefits, including:

  • Aliphatic polyurethane has UV resistance, making it resistant to fading and discoloration brought on by exposure to sunshine.
  • It is the best choice for use in situations where color is crucial since it retains its color over time.
  • Aliphatic polyurethane is extremely resilient to impact, abrasion, and chemicals.
  • It can tolerate severe weather, such as humidity and extremely high or low temperatures

The following benefits of aromatic polyurethane:

  • Mechanical characteristics: The hardness and abrasion resistance of aromatic polyurethane are outstanding.
  • Cost: In general, aromatic polyurethane is more affordable than aliphatic polyurethane.
  • It is resistant to a variety of chemicals and solvents.
  • Flexibility: Due to its moderate flexibility, it may be used in applications that call for a certain amount of elasticity.

Aliphatic and aromatic polyurethane differences

  • Chemical Composition: While aromatic polyurethane has a more intricate ring-like chemical composition, aliphatic polyurethane has a linear chemical composition.
  • Aliphatic polyurethane has excellent UV stability and does not fade or discolor when exposed to sunshine. When exposed to sunshine, aromatic polyurethane is less UV-resistant and prone to discoloration.
  • Cost: In general, aromatic polyurethane is more affordable than aliphatic polyurethane.
  • Mechanical qualities: Compared to aliphatic polyurethane, aromatic polyurethane offers greater mechanical qualities, such as hardness and abrasion resistance.
  • Appearance: Aromatic polyurethane coatings might have a golden or amber appearance, while aliphatic polyurethane is often clear or colorless.
 Aliphatic Aromatic 
 UV StableUV resistant  
 Good mechanical strengthHigh Mechanical strength 
High costLess Cost 
 Clear and Colorless coatingColourfull 
 Non yellowing effectsYellowing effects  
Curing compound benefits: A Step-by-Step Guide to Applying Curing Compound

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