Power bank potting solution | Efficient thermal conductivity, safe flame retardancy, and reliable protection

In today’s rapidly developing mobile electronic devices, power banks have become an essential “endurance tool” for people. However, with the continuous increase in capacity and power, internal heating, weather resistance, and safety issues have also become prominent. How to provide reliable protection for internal core components while ensuring energy density? Sealing glue becomes a crucial step. Why do power banks need to be sealed?The internal structure of a power bank is compact, usually including core components such as battery cells, circuit boards, protective chips, and heat sinks. When outputting high power for a long time, the PCB and power devices will continue to heat up. If the heat dissipation is poor, it not only affects performance but may also pose safety risks.The sealing adhesive mainly plays the following roles:Thermal conduction and heat dissipation: Quickly transfer heat to the shell, reducing the core temperatureInsulation protection: isolate moisture and dust to avoid short circuitsStructural reinforcement: earthquake and drop resistance, enhancing durabilityFlame retardant safety: prevent accidental overheating and combustionGlue requirementsFor the special structure and usage environment of power banks, the sealing adhesive must meet the following conditions:Natural curing: No heating required, suitable for mass production and assemblyThermal conductivity ≥ 2.0 W/m · K: ensures rapid heat dissipationSemi flowing state: It can fill gaps and is not easy to flow to places where it should not flowFlame retardant grade V-0: ensures safe use and meets the fire prevention standards for electronic products Recommended product: SIPA 8250-20 In response to the above requirements, we recommend SIPA 8250-20 thermal conductive flame-retardant sealant – a silicone material designed specifically for portable energy storage devices.core performanceHigh thermal conductivity: thermal conductivity of 2.0 W/m · K, effectively reducing temperature rise of power devicesFlame retardant V-0: Compliant with UL 94 V-0 standard, excellent flame retardant performanceAdjustable viscosity: Semi flowing design…