Both of these adhesives can be used for bonding aluminum, from what I have found. Does polyurethane have any advantages in vibration dampening/sound deadening compared to epoxy? The application would be bonding (laminating) two panels of aluminum for an automotive dash panel.
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Epoxy vs Urethane for Bonding Aluminum
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While it depends on the exact chemistry used*, polyurethanes tend to be more elastic than epoxies and should have reduced vibration transmission.
*It's a bit like asking: Which has higher yield strength, aluminum or steel? Generally steel, but it depends on the alloy and heat treating.
*It's a bit like asking: Which has higher yield strength, aluminum or steel? Generally steel, but it depends on the alloy and heat treating.
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