Hernon 397 is a single component, high temperature resistant, heat activated epoxy. It cures to a high-performance thermoset system with excellent adhesion properties to a wide variety of substrates. Tuffbond 397 will change from amber-yellow to a reddish brown upon cure.
Product Benefits
• High temperature resistance.
• Single component (no mixing, no pot life).
• Contains 150micron spacer beads for bond line control
• Solventless.
• Cures on demand (heat cure).
• Will not slip during cure.
• Changes color upon cure (yellow to brown).
• Excellent adhesion to various substrates.
• Gives high shear.
• Low water absorption.
Tuffbond® 394 is a single component, high temperature resistant, heat activated epoxy. It cures to a high-performance thermoset system with excellent adhesion properties to a wide variety of substrates. Tuffbond® 394 will change from amber-yellow to a reddish brown upon cure. Bonding the voice coil to the cone has been a challenge for engineers, specifically when the adhesive temperature resistance requirement is above 200°F (93°C). Two component epoxy was commonly used for this application, but limitations such as mixing ratio, cure speed, potential solidification in equipment and the need for equipment flushing solvents have made Tuffbond® 394 more practical.