TSE3331 is a two-component, heat-curable silicone rubber for electric and electronic potting. TSE3331 cures with heat to form elastic, flame retardant rubber and adheres to various types of materials without the need for primers, such as metals, plastics, glass, and ceramics.
Key Features
- Convenient 1:1 mix ratio by weight
- Excellent thermal conductivity
- Low viscosity allows for excellent flowability
- Excellent adhesive properties: primerless adhesion to many types of substrates
- Flame retardant: UL94V-0 recognized (File No: E56745)
- Resistance to temperature extremes
- Non-corrosive to most metals
Potential Application
- Potting of electronic parts required flame retardancy
- Potting of high voltage parts
- Moistureproof coating of electronic circuit boards
Typical Properties
| Uncured Properties | Value (A) | Value (B) |
| Appearance | Black | White |
| Viscosity (23 °C) | 4.1 {41} Pa·s {P} | 3.5 {35} 3.5 {35} |
| Mix ratio by weight | 1:1 | 1:1 |
| Viscosity after mixing (23 °C) | 3.5 {35} Pa·s {P} | 3.5 {35} Pa·s {P} |
| Pot Life (23 °C) | 8h | 8h |
| Cured Properties (1h at 120 °C) | Value |
| Appearance | Elastic rubber, Black |
| Density (23 °C) | 1.51 g/cm3 |
| Hardness (Type A) | 60 |
| Tensile Strength | 2.9 {30} MPa {kgf/cm2 } |
| Elongation | 50% |
| Adhesive Strength (1) | 1.3 {13} MPa {kgf/cm2 } |
| Thermal Conductivity (2) | 0.63 {1.50 x 10-3} W/(m·K) {cal/(cm·s·°C)} |
| Linear Expansion(2) | 1.7 x 10-4 1/K |
| Water adsorption(3) % |
0.03 – 25 °C, 24h 0.03 – 25 °C, 168h |