Thermally Conductive Low-Expansion
SM-CS-301
Epoxy Thermally Conductive Low-Expansion Cryogenic Adhesive
Product Description：
A high-performance cryogenic structural adhesive specifically developed for deep-cryogenic scenarios requiring “thermal conductivity, low expansion, and low-stress bonding and encapsulation.” Featuring an excellent thermal conductivity of up to 2.0 W/m·K and an extremely low coefficient of linear expansion below 30×10^-6/K, along with good fluidity, it is highly suitable for potting precision components. It significantly reduces the thermodynamic stress generated between dissimilar materials during extreme cooling processes, fundamentally preventing structural cracking and material damage in cryogenic environments.
Key Features:
Highly Efficient Thermal Conductivity & Ultra-Low Expansion: Delivers exceptional heat dissipation capabilities with a thermal conductivity reaching up to 2.0 W/m·K, while strictly maintaining a coefficient of linear expansion below 30×10^-6/K, ensuring ultimate dimensional stability under severe temperature drops.
Ultimate Low-Stress Anti-Cracking Protection: Relying on its minimal shrinkage and thermal expansion deformation, it significantly minimizes the mechanical stress generated between materials with different expansion coefficients during the cooling process, effectively preventing bondline cracking and physical destruction of the bonded substrates.
Excellent Fluidity & Convenient Potting: Overcoming the high-viscosity limitations of traditional thermally conductive adhesives, the product exhibits good flowability. It easily penetrates and fills the gaps of complex structures, making it extremely convenient for the deep potting and sealing encapsulation of precision cryogenic components.
Typical Properties
| Property | Value |
| Main Resin | Epoxy |
| Cured Appearance | Greyish yellow |
| Viscosity @ 25°C (mPa·s) | 25,000 |
| Curing Time（25°C,h） | 6 |
| Track-free Time | 12 |
| Operation Temperature | -269～100℃ |
| Tensile Strenth : 25℃ / -196℃ | 20.0 MPa / 18.0 MPa |
| Hardness | 65 Shore D |