Product Description
The Tonsan® 1521 Black is a high-performance two-component silicone adhesive designed for fast curing at room temperature, ensuring strong bonding and reliable sealing. It is widely used for potting electronic components, particularly in junction boxes on PV modules, providing superior thermal conductivity and flame retardancy. As a 2K adhesive, encapsulant, and potting compound, it delivers exceptional durability and protection in industrial and renewable energy applications.
Features of Tonsan® 1521 Black
- Curing quickly at room temperature, improving production efficiency.
- Providing strong adhesion to PV modules, lithium-ion batteries, and energy storage systems.
- Offering excellent dielectric properties for reliable electrical insulation.
- Enhancing heat dissipation with good thermal conductivity.
- Ensuring compliance with safety standards by being flame retardant.
- Withstanding extreme weather conditions, temperature variations, and moisture exposure.
Applications of Tonsan® 1521 Black
- Renewable Energy Sector: Ideal for PV module installation, frame sealing, and junction box potting.
- Battery & Energy Storage: Used in lithium-ion battery assembly and energy storage systems.
- Industrial Manufacturing: Suitable for ingot bonding, edge gluing, and rail bonding.
- Electronics & Electrical Components: Ensures secure encapsulation and long-term protection of sensitive parts.
- Turbine & Blade Applications: Provides strong and durable bonding solutions for wind turbines and industrial machinery.
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs. With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with: Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.About Prostech
| Properties | Details |
|---|---|
| Technology / Base | Silicone |
| Type of Product | Adhesive |
| Components | Two components |
| Curing | Room temperature cure |
| Appearance / Color | Black |
| Consistency | Viscous Liquid |
| Viscosity (Resin) | 13000 mPa·s |
| Viscosity (Activator) | 25 mPa·s |
| Viscosity (Mixed) | 3000 mPa·s |
| Density | 1.40 g/cm³ |
| Mix Ratio (Volumetric) | 4:1 |
| Mix Ratio (Weight) | 6:1 |
| Flash Point | > 93°C |
| Working Time | 8 minutes |
| Gel Time | 60 minutes |
| Hardness | 40 Shore A |
| Tensile Strength | 1.2 MPa |
| Elongation at Break | 110% |
| Thermal Service Range | -50 to 150°C |
| Thermal Conductivity | 0.30 W/m·K |
| Volume Resistivity | 1.0 × 10¹⁵ Ω·cm |
| Breakdown Strength | 23 kV/mm |
| Damp-Heat Aging (1000h at 85°C, 85% RH) | 1.0 × 10¹⁵ Ω·cm |
