BZ-3501: 2.0 W/m·K High Performance Thermal Silicone Gel

Product Description

BZ-3501 is a high-performance two-component addition-cure silicone gel designed for thermal management and environmental protection in power-dense electronic systems. With a thermal conductivity rating of ≥2.0 W/m·K, low viscosity, and UL94 V0 flame retardancy, it provides exceptional heat transfer, electrical insulation, and mechanical protection for components operating in harsh conditions. This gel offers excellent flowability, deep curing capability, and compatibility with various substrates, making it suitable for both manual and automated dispensing processes.

Key Product Features

1. 2.0 W/m·K Thermal Conductivity: Ensures efficient heat transfer from heat-generating components to heat sinks, preventing overheating and extending service life in power-dense systems like automotive ECUs, battery packs, and industrial power modules.
Low Viscosity: Mixed viscosity of 4000–6000 mPa·s allows complete penetration into intricate component layouts, ensuring uniform encapsulation and heat distribution.

2. Deep Curing Capability: Cures uniformly through thick sections without exothermic peaks, eliminating voids and ensuring consistent performance in large or complex assemblies.
3. Wide Temperature Range: Maintains stable performance from -50°C to 200°C, withstanding thermal shock in automotive, industrial, and outdoor applications.
4. UL94 V0 Flame Retardancy: Achieves V0 rating at 3mm thickness, providing critical fire safety for high-power electronic modules and energy storage systems.
5. Global Environmental Compliance: Meets RoHS 2.0, REACH, and TSCA standards, ensuring suitability for international markets and reducing environmental impact.

Technical Parameters 

Product Applications

1. Automotive Electronics: Encapsulates ECUs, battery management systems (BMS), and power modules in electric vehicles, ensuring reliable performance in extreme temperature and vibration conditions.
   2. New Energy Systems: Protects battery packs, inverters, and sensors in solar power plants, energy storage systems, and charging stations, managing heat and preventing thermal runaway.
   3. Industrial Electronics: Provides thermal management and environmental protection for high-power modules, circuit boards, and power supplies in heavy machinery and automation equipment.
   4. Precision Sensors: Encapsulates sensitive sensors and transducers in aerospace, medical, and industrial applications, protecting them from environmental factors and ensuring accurate performance.
   5. Telecommunications Equipment: Encapsulates base station components, power amplifiers, and signal processing modules to ensure stable performance in remote or outdoor locations.

Directions for Use

1. Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check machine settings, check vacuum pump force, etc. 
2. Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean, degrease, and dry if necessary.
3. Accurate Proportioning: Manual operation requires precise mixing according to the specified ratio and recording. Machine potting requires calibrated ratios and first-article confirmation is recommended.
4. Mixing & Stirring: Manual operation requires thorough stirring or using electric stirrers to ensure homogeneous mixing. Machine potting requires sufficient stirring speed, adjust as needed.
5. Uniform Potting: Manual operation should be done in small, multiple batches to ensure uniformity. Machine potting should follow the programmed path for quantitative dispensing.
6. Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up, bubble removal, or secondary potting if required.
7. Curing: Allow the potted and inspected products to cure at room temperature or with heat assistance (recommended 60°C if needed), according to product and process requirements.
8. Final Product Confirmation: Perform visual inspection and performance testing as required by the customer.

   9. This series of products are room-temperature-curing, addition-cure two-component silicone. During the dispensing process, avoid contact with the following three types of materials to prevent reactions that may affect the curing effect:

       a. Organotin compounds and organotin-containing silicone rubber.

       b. Sulfur, sulfides, and sulfur-containing materials.

       c. Amine compounds and amine-containing materials.

     10. It should be noted that during manual operation, when vacuumizing the mixed A+B adhesive, the vacuum pressure must be controlled to ensure the adhesive is not completely sucked out of the container by the vacuum.

Packing & Shipping & Storage

1. Part A: Typically supplied in 25kg sealed plastic drums.
2. Part B: Typically supplied in 25kg sealed plastic drums.
3. Store and transport as a general chemical product.
4. Store sealed, protected from light at room temperature. Shelf life varies from 6 to 12 months depending on packaging; please refer to the expiry date on the shipping package.
5. When temperature drops to 15°C or lower, the hardener or resin should be stored in a warm place or heated before use for potting. Specific heating recommendations depend on the temperature drop; please communicate and consult with us.

FAQ:

Q1: What are Thermal Conductive Adhesive Compounds used for?

A1: Thermal Conductive Adhesive Compounds are used to bond components while efficiently transferring heat away from sensitive electronic parts, ensuring optimal thermal management in devices such as LEDs, CPUs, and power modules.

Q2: What materials can Thermal Conductive Adhesive Compounds bond?

A2: These compounds can bond a variety of materials including metals, ceramics, plastics, and electronic components, providing strong adhesion along with excellent thermal conductivity.

Q3: How do Thermal Conductive Adhesive Compounds improve device performance?

A3: By facilitating efficient heat dissipation from heat-generating components, these adhesives prevent overheating, improve reliability, and extend the lifespan of electronic devices.

Q4: Are Thermal Conductive Adhesive Compounds electrically conductive?

A4: Most Thermal Conductive Adhesive Compounds are electrically insulating to prevent short circuits, while still offering high thermal conductivity to manage heat effectively.

Q5: What is the typical curing process for Thermal Conductive Adhesive Compounds?

A5: The curing process varies by product, but generally involves room temperature curing or heat curing at elevated temperatures to achieve optimal adhesion and thermal performance.