Moisture Curing Adhesives
What are Moisture Curing Adhesives?
Moisture curing adhesives are adhesives that cure by reaction with atmospheric moisture. These 1-component systems polymerize upon contact with water molecules from ambient air, forming permanent, elastic or rigid bonds.
Properties of Moisture Curing Adhesives
- Ready-to-use application without mixing required
- Curing at room temperature possible
- Defined flash-off times depending on humidity
- Deep curing through moisture diffusion
- Various final properties from elastic to rigid
- Long pot life in sealed containers
Curing Mechanisms
- Condensation curing: Elimination of low molecular weight compounds
- Addition curing: Direct water addition without by-products
- Controlled setting speed through catalysts
- Curing speed dependent on humidity and temperature
Applications
- Construction industry: Sealing and bonding outdoors
- Automotive Potting Compound: Electronics protection in humid environments
- Sanitary applications: Sealing in wet rooms
- Elastomer bonding: Flexible connections
Factors Influencing Curing
- Relative humidity: 40-60% optimal for most systems
- Temperature: Higher temperatures accelerate curing
- Layer thickness: Thicker layers cure more slowly
- Substrate porosity: Porous materials promote moisture supply
DELO Adhesive Solutions
- Various curing speeds available
- Flexible and rigid final properties
- Special formulations for critical environments
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