Bonding ceramic components (e.g., piezoelectric elements, alumina substrates) in sensors presents one of the most significant challenges in modern assembly. Ceramics possess a much different Coefficient of Thermal Expansion (CTE) than the metal or plastic housings they are often bonded to. This CTE mismatch causes extreme stress on the adhesive bond line during temperature changes (thermal cycling), leading to micro-cracking and ultimately, premature sensor failure.
Prevent thermal shock from destroying your sensor integrity and accuracy.
INCURE GapFill™ D98 Thermal Cycling Resistant Adhesive
The GapFill™ D98 is specifically formulated to withstand the internal stress and fatigue caused by differential material expansion. It creates a high-strength bond that is flexible enough to absorb thermal shock without cracking or losing adhesion.
| Feature & Benefit | Technical Insight for Sensor Bonds | Conversion Value |
| Thermal Cycling Resistance | Engineered to maintain high bond strength through rapid and extreme temperature fluctuations (e.g., -54°C to 150°C), preventing bond fatigue and brittle failure. | Thermal Immunity: Ensure your sensor bond integrity survives repeated heat/cold stress tests. |
| High Stress Tolerance | The formulation includes toughening agents to absorb internal stresses caused by the CTE mismatch between ceramic and metal/plastic housings. | Crack Prevention: Stop material movement from translating into catastrophic bond line failure. |
| Superior Bond to Ceramics & Metal | Excellent adhesion to hard-to-bond, inert materials like alumina ceramic, glass, and specialty metals typical in sensor construction. | Unbreakable Connection: Achieve reliable, high-strength adhesion on typically difficult, non-porous sensor substrates. |
| High Continuous Service Temp | Provides structural stability and reliable performance in sensor environments that often operate under continuously elevated temperatures (e.g., 121°C / 250°F). | Long-Term Reliability: Trust your bond to maintain performance and accuracy throughout the sensor’s service life. |
Application Steps: Bonding Ceramic for High-Stress Performance
Preparation (Critical): Ceramics are non-porous and require a pristine surface. Thoroughly clean all ceramic and housing components with a degreasing solvent (like acetone) to remove any trace oils or dust that can impede bond strength under stress.
Application: Apply a thin, uniform film of GapFill™ D98 to one of the mating surfaces. For high-stress applications, avoid creating large fillets, as a thinner bond line often distributes stress more efficiently.
Assembly: Mate the ceramic component to the housing immediately and press together with uniform pressure. Hold the component until the adhesive fixtures.
Curing Time (Maximize Resilience): Allow the adhesive to cure for a full 24 hours at room temperature to achieve its optimal elastomeric and stress-absorbing properties. If thermal cycling is required, do not introduce the component to stress testing until this time is complete.
Protect your precision instruments with a bond that endures the heat.