GENERAL DESCRIPTION
Momentive SILCOOL TIA219RP is the prolonged pot life version of the high-performance TIA219R two-component thermal silicone. This material is specifically formulated for industrial manufacturing setups that require longer assembly windows, extensive filling cycles, or deep potting depth. It features a superior flowability that allows it to conform effortlessly to intricate three-dimensional shapes, completely eliminating air pockets to form a continuous thermal path. Upon curing, it creates a soft, highly compliant rubber layer that protects sensitive circuitry from thermal stresses and mechanical shocks.
With an extended work life of 10 hours at room temperature, SILCOOL TIA219RP minimizes material waste during line stoppages and offers maximum process flexibility for complex or large-volume potting operations. While it provides an ultra-long pot life, it remains highly responsive to heat, allowing operators to rapidly accelerate curing at 70°C or 120°C when needed. This product is officially distributed in Vietnam by Prostech, complete with comprehensive technical support and tailored solutions for your manufacturing processes.
FEATURES & BENEFITS
- **Prolonged Work Life (10 Hours at 23°C):** Provides an exceptionally long open time, preventing premature gelling in dispensing systems and making it ideal for large-scale or manual batch operations.
- **Excellent Thermal Conductivity (1.9 W/mK):** Delivers reliable thermal management by quickly removing heat from densely packed electronic elements to prevent system degradation.
- **Primerless Adhesion to Diverse Substrates:** Secures a robust bond directly to metals, ceramics, glass, and common engineering plastics, eliminating the time and labor cost of primer application.
- **Superior Stress Relief (Type A Hardness 25):** Absorbs mechanical impacts and minimizes the physical stress exerted on fine wire bonds and fragile electronics during thermal cycling.
- **1:1 Mix Ratio by Weight:** Ensures simple, highly consistent mixing configurations for both automated equipment and manual applications.
- **Flexible Heat-Curing Options:** Offers the choice to cure overnight at room temperature or execute swift thermal curing within 30 minutes at 70°C or 18 minutes at 120°C.
- **Low Volatiles and Non-Corrosive Quality:** Contains only 200 ppm of low-molecular-weight volatiles (D3-10), preventing lens fogging and protecting metal connections from chemical corrosion.
TYPICAL APPLICATIONS
- Ideal for solving production line bottlenecks in large-volume potting operations that require extended open times or experience frequent operational pauses.
- Used in the assembly process of large power supplies, heavy-duty industrial inverters, and high-capacity LED driver modules where deep cavity filling is mandatory.
- Perfect for manufacturing environments where components must be precisely positioned and adjusted over a multi-hour window after the potting material is dispensed.
- Prostech provides application testing and engineering consultation to help manufacturers optimize dispensing parameters and validate compatibility for various substrates.
| Property Class | Parameter / Test Method | Unit | Value (TIA219RP) |
|---|---|---|---|
| Uncured Properties | Appearance (Part A) | – | Gray |
| Uncured Properties | Appearance (Part B) | – | White |
| Uncured Properties | Mix Ratio by Weight | – | 1:1 |
| Uncured Properties | Viscosity (Part A) at 23°C, 20 rpm | Pa·s | 12 |
| Uncured Properties | Viscosity (Part B) at 23°C, 20 rpm | Pa·s | 9 |
| Uncured Properties | Viscosity after Mixing at 23°C, 20 rpm | Pa·s | 11 |
| Uncured Properties | Work Life at 23°C | Hours | 10 |
| Uncured Properties | Cure Time at Room Temperature (RT) | Hours | 24 |
| Uncured Properties | Cure Time at 70°C | Hours | 0.5 (30 mins) |
| Uncured Properties | Cure Time at 120°C | Hours | 0.3 (18 mins) |
| Cured Properties | Appearance after Cure (30 mins @ 70°C) | – | Gray |
| Cured Properties | Density at 23°C | g/cm³ | 2.7 |
| Cured Properties | Hardness (Type E) | – | 50 |
| Cured Properties | Hardness (Type A) | – | 25 |
| Cured Properties | Tensile Strength | MPa | 0.6 |
| Cured Properties | Elongation at Break | % | 150 |
| Cured Properties | Adhesion Strength (Aluminum Lap Shear) | MPa | 0.6 |
| Cured Properties | Thermal Conductivity (Hot Wire Measurement) | W/mK | 1.9 |
| Cured Properties | Coefficient of Thermal Expansion (CTE) | ppm/K | 150 |
| Cured Properties | Volume Resistivity | MΩ·m | 1.1 × 10⁶ |
| Cured Properties | Dielectric Strength | kV/mm | 21 |
| Cured Properties | Volatiles (D3-10) | ppm | 200 |




