CEMEDINE SX720BH Flame-Retardant Elastic Adhesive is a black, high-viscosity, one-component adhesive and sealant developed for electrical and electronic assemblies. Based on acrylic-modified silicone resin technology, it cures through atmospheric moisture at room temperature and forms a durable rubber-like layer. Its combination of flame resistance, electrical insulation, flexible bonding, and controlled non-sag application makes it suitable for circuit boards, power supplies, transformers, coils, capacitors, sensors, housings, and other precision electronic components.

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CEMEDINE SX720BH Flame-Retardant Elastic Adhesive for Electronics

CEMEDINE SX720BH Flame-Retardant Elastic Adhesive is supplied ready to use, eliminating the weighing and mixing required with two-component systems. This simplifies production, reduces preparation errors, and supports consistent dispensing in manual or automated assembly processes. The material is solvent-free and cures at room temperature, helping manufacturers maintain an efficient production process without installing heat-curing equipment.

The SX720BH grade has a typical viscosity of 82 Pa·s at 23°C, providing excellent shape retention on vertical surfaces, around component bases, and along narrow sealing lines. Its black paste appearance also makes applied areas easier to inspect and provides a uniform finish in dark-colored electronic assemblies.

Key Benefits of CEMEDINE SX720BH Flame-Retardant Elastic Adhesive

CEMEDINE SX720BH Flame-Retardant Elastic Adhesive is UL 94 V-0 recognized and designed for applications requiring flame-retardant bonding and sealing. It is also RoHS compliant and features a siloxane-free formulation, making it suitable for electronics production where low-molecular-weight siloxane contamination may affect sensitive contacts or components.

One-component room-temperature moisture-curing adhesive
UL 94 V-0 recognized flame-retardant performance
High-viscosity black paste with excellent non-sag control
Typical tack-free time of approximately seven minutes at 23°C
Solvent-free formulation for convenient production
Siloxane-free design for sensitive electronic assemblies
Elastic cured layer that absorbs vibration and thermal movement

Once cured, the elastic adhesive layer helps absorb stress generated by vibration, mechanical shock, and differences in thermal expansion between bonded materials. This flexible performance can reduce cracking, peeling, and concentrated stress compared with rigid adhesive systems.

Properties of CEMEDINE SX720BH Flame-Retardant Elastic Adhesive

Typical cured properties include a Shore A hardness of 78, tensile strength of approximately 3.6 MPa, and a glass-transition temperature near -62°C. The product also provides typical tensile shear adhesion of 3.1 MPa and T-peel strength of approximately 1.1 N/mm under the manufacturer’s specified test conditions.

For electrical applications, CEMEDINE SX720BH Flame-Retardant Elastic Adhesive offers a typical volume resistivity of 1.6 × 10¹² Ω·cm, dielectric constant of 6.2 at 100 Hz, and dielectric loss tangent of 0.3 at 100 Hz. Its typical thermal conductivity is 1.0 W/m·K, supporting heat transfer through properly designed bonded or sealed sections.

Applications of CEMEDINE SX720BH Flame-Retardant Elastic Adhesive

Typical applications include fixing capacitors and coils to printed circuit boards, reinforcing electronic components, providing insulating seals around power supplies and transformers, and waterproof sealing of electrical parts. It can also be used in automotive electronics, household appliances, communication equipment, LED assemblies, industrial control systems, sensors, power modules, and precision electrical devices.

The high-viscosity formulation is particularly useful where the adhesive must remain in position without excessive flowing or sagging. It supports controlled bead application around raised components, vertical housing surfaces, cable entries, connector areas, and irregular electronic assemblies.

How to Apply CEMEDINE SX720BH Flame-Retardant Elastic Adhesive

Remove dust, oil, moisture, flux residue, release agents, and loose contamination from the application surface. Dispense a uniform bead or controlled amount of adhesive, position the components, and maintain correct alignment during the initial curing stage.

Curing speed depends on temperature, relative humidity, bead thickness, airflow, and joint design. Because atmospheric moisture must penetrate the material, thick sections require more curing time than thin beads. Avoid electrically loading, moving, testing, or packaging the assembly until sufficient curing has occurred.

Storage of CEMEDINE SX720BH Flame-Retardant Elastic Adhesive

Store the product in its original tightly sealed container in a cool, dry location. Protect it from excessive heat, direct sunlight, and moisture contamination. Application testing should be completed on actual plastics, metals, coatings, and circuit-board materials before mass production.

CEMEDINE SX720BH Flame-Retardant Elastic Adhesive is available in 200g tubes and 333ml cartridges. It is a dependable industrial solution for manufacturers requiring controlled high-viscosity dispensing, flame resistance, electrical insulation, waterproof sealing, and flexible protection of sensitive electronic assemblies.

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View the official CEMEDINE SX720BH product information for current technical specifications.

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