Heat Curing
What is Heat Curing?
Heat curing is a curing process in which adhesives are activated and cured by supplying thermal energy. The heat initiates chemical crosslinking reactions that transform the adhesive from a liquid or paste state into a solid, load-bearing final state.
Properties of Heat Curing
- Controlled activation through defined temperature and hold time
- High final strength through complete chemical crosslinking
- Reproducible curing cycles for industrial series production
- Deep curing independent of layer thickness and component geometry
- Various temperature profiles available for different adhesive systems
- Short curing times possible at elevated process temperatures
Applications
- Automotive: Structural body bonding and engine compartment applications
- Electric motor manufacturing: Stator and rotor bonding under thermal stress
- Power electronics: Curing of temperature-resistant potting compounds
- Semiconductor technology: Thermal curing in die attach processes
- Aerospace: Structural bonding with high strength requirements
Processing Guidelines
- Select heating rate carefully to avoid thermal stresses in the bond line
- Maintain hold time at target temperature precisely for complete polymerization
- For 2K systems, account for pot life before placing in the oven
- Include substrate mass and heat capacity of parts in process design
- Control cooling rate to minimize residual stresses in the cured adhesive layer
DELO Adhesive Solutions
- Heat-curing adhesives for simplified oven curing without mixing effort
- High-temperature-resistant systems for operating temperatures up to 200 °C and above
- Technical consulting for designing optimal temperature profiles for specific applications
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