Whilst Sorbothane is a popular material for reducing impact shock and vibration, the tacky nature of the material can on occasions cause the user problems. Standard Sorbothane on occasions is prone to adhering to enclosures and staining/damaging sensitive surfaces through residue.
To prevent this from occurring, Sorbothane can offer both urethane coating and Teflon coating. The below article compares the advantages and disadvantages of both coatings:
Teflon Coating
Coating Sorbothane with Teflon (PTFE) enhances its shock-absorbing capabilities by creating a slippery, protective outer layer. This combination improves durability in high-friction environments where the sticky, tacky nature of standard Sorbothane might otherwise be a disadvantage.
Advantages:
– Reduced Friction & Sticking: Standard Sorbothane is naturally tacky. A Teflon coating provides a non-stick, low-friction interface, allowing parts to slide easily across the surface without grabbing or tearing.
– Increased Abrasion Resistance: The hard Teflon shell protects the softer underlying Sorbothane from wear and tear, extending the lifespan of the component in dynamic or sliding applications.
– Maintained Damping Performance: The combination retains the core material’s excellent visco-elastic properties—meaning it continues to effectively absorb shock and isolate vibration.
– Chemical & Moisture Barrier: Teflon provides an impermeable, hydrophobic teflon coating. It prevents liquids, solvents, and corrosive chemicals from degrading the underlying Sorbothane.
– Temperature Stability: The coating adds a layer of thermal resistance, protecting the Sorbothane from extreme hot or cold environments.
– Urethane Coating
Urethane-coated Sorbothane combines the material’s legendary, 94.7% shock and vibration-damping properties with a durable exterior shell. This coating creates a “non-stick” surface that prevents the pad from permanently adhering to enclosures or staining sensitive finishes like wood.
Advantages:
– No Surface Marring: Raw Sorbothane naturally contains plasticizers that can leach out over time and damage plastics or stain polished wood. The urethane coating serves as a protective barrier.
– Reduced Friction & Easy Handling: Raw Sorbothane is highly tacky, which can make placing it under heavy equipment difficult. The smooth, urethane-coated surface allows objects to slide easily into place without grabbing
– Maintains Core Performance: The coating is thin enough not to interfere with Sorbothane’s unique viscoelastic properties, meaning you still get excellent impact absorption, acoustic damping, and long fatigue life.
– Abrasion & Element Protection: The exterior coating adds a layer of defense against moisture, chemicals, dirt, and everyday wear-and-tear
– Custom Adhesive Options: Because of the coating, manufacturers can apply aggressive, pressure-sensitive adhesives (PSA) or polyester films, allowing for simple peel-and-stick installations.
Advantages and disadvantages of urethane coating over teflon coating
Advantages of Urethane Coating
– Urethane coating is more durable.
– Urethane coating still maintains a little tackiness so for tabletop applications it will stay in place.
Disadvantage of Urethane Coating
– Cost
Advantages of Teflon Coating
– Lower cost
– Eliminates tackiness of Sorbothane
Disadvantage of Teflon Coating
– It wears off overtime.
This article was partly written using AI.