Momentive RTV6424 Heat-Curable Silicone Adhesive Sealant
Fundamental Properties
| Property |
Unit |
RTV6424 Value |
| Uncured Properties |
|
|
| Color |
|
White |
| Viscosity |
cps |
N/A |
| Specific Gravity |
|
1.17 |
| Vertical Flow (5 mins) |
inches |
2 |
| Application Rate |
grams/minute |
150 |
| Cured Properties (1hr @150°C) |
|
|
| Durometer (Shore A) |
|
30 |
| Elongation |
% |
550 |
| Tensile Strength |
psi |
675 |
| Tear Strength (Die B) |
lb./in. |
80 |
| Adhesion (al to al) |
psi |
300 |
| Electrical Properties (Cured) |
|
|
| Dielectric Strength |
volts/mil |
500 |
| Dielectric Constant |
|
2.9 |
| Dissipation Factor |
|
0.003 |
| Volume Resistivity |
Ω.cm |
1.0x10¹⁵ |
Product Profile
Momentive RTV6424 is a one-component, white, paste-like heat-curable silicone adhesive/sealant. It features a long working time at room temperature for ease of application and positioning. However, it requires exposure to elevated temperatures to achieve full cure. A key highlight of this product is its excellent "primerless" adhesion, allowing it to bond strongly to a wide variety of common substrates without the need for a primer. It cures without producing by-products, exhibits low linear shrinkage, and is non-corrosive to metals and sensitive substrates, ensuring safety and reliability in applications.
Key Features and Typical Benefits
Beyond basic bonding and sealing, RTV6424 excels in demanding applications due to its special attributes. Its outstanding electrical properties (Dielectric Strength 500 V/mil, Volume Resistivity 1.0x10¹⁵ Ω.cm, Dielectric Constant 2.9, Dissipation Factor 0.003) make it ideal for electronics and electrical potting and insulation. The cured silicone exhibits excellent flexibility (Elongation up to 550%) and moderate hardness (Shore A 30), effectively absorbing stress and accommodating thermal expansion differences between substrates. Its broad adhesion range and primerless capability (Adhesion to Al of 300 psi) significantly streamline processes and improve efficiency. Furthermore, its wide thermal range performance and low shrinkage ensure dimensional stability and sealing reliability over long-term use.
Application Scenarios
Momentive RTV6424 is particularly suited for applications requiring high-performance bonding, sealing, potting, or insulation:
- Automotive Electronics: Bonding, sealing, and insulating protection for sensors in the engine compartment (e.g., oxygen sensors, knock sensors), requiring resistance to high temperature, vibration, and chemical exposure.
- Power Electronics: Encapsulation and insulation of power modules (e.g., IGBTs), capacitors, and connectors, providing electrical isolation, gap filling (silicone has moderate thermal conductivity), and moisture protection.
- Industrial Electronics: Component bonding, conformal coating protection, and housing sealing for control boards and drives.
- Photovoltaic Modules: Bonding, sealing, and potting of internal components in junction boxes, protecting them from environmental degradation.
- General Industrial Sealing & Bonding: Non-electronic device or metal/non-metal substrate bonding/sealing requiring long-term reliability, wide temperature resistance, and weatherability.
FAQ
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
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