Aging
What is Aging in Adhesive Bonds?
Aging in adhesive bonds describes the time-dependent change in properties of an adhesive connection under the influence of various environmental factors. These changes can lead to gradual deterioration of mechanical, chemical or optical properties and are an important factor in lifetime considerations.
Properties of Adhesive Aging
- Time-dependent property changes
- Influence of temperature, UV radiation and humidity
- Reversible and irreversible aging processes
- Material-specific aging rate
- Predictability through accelerated testing
Aging Factors
- Thermal aging: Influence of elevated temperatures
- UV aging: Damage from ultraviolet radiation
- Hydrolysis: Decomposition by moisture and water
- Oxidation: Reaction with oxygen from ambient air
Test Methods
- Climate change testing: Simulation of various environmental conditions
- UV weathering: Accelerated aging through UV irradiation
- Temperature cycles: Alternating stress from temperature fluctuations
- Long-term tests: Realistic continuous stress
Protection Measures
- UV stabilizers: Protection against UV-induced degradation
- Antioxidants: Delay of oxidative aging
- Moisture protection: Barrier layers and sealings
- Temperature management: Avoidance of critical temperature ranges
DELO Adhesive Solutions
- Aging-resistant formulations for long-term applications
- Comprehensive aging tests and lifetime predictions
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