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Explore our certified silicone polymers and high-performance potting composites engineered to dissipate concentrated heat in photovoltaic junction boxes, power optimizers, and micro-inverter circuitry.
Modern photovoltaic module architectures demand sophisticated thermal and dielectric potting solutions to sustain continuous performance under extreme solar irradiance and elevated localized heat fluxes.
The rapid commercial transition toward high-efficiency TOPCon, Heterojunction (HJT), and Perovskite-Silicon tandem solar cells has substantially escalated operational current ratings per string. While legacy modules functioned around 9A to 11A, modern bifacial high-power modules regularly operate at currents surpassing 18A to 25A. During partial shading conditions, bypass diodes within the photovoltaic solar panel junction box transition into forward-bias conduction mode, producing extreme localized hotspot temperatures that can exceed 150°C in unmitigated configurations.
Without adequate thermal interface materials (TIM) and specialized potting encapsulation, junction box temperatures spike rapidly. This severe thermal stress accelerates diode breakdown, triggers thermal runaway, degrades polymer housing enclosures, and permanently reduces overall Levelized Cost of Energy (LCOE). Integrating pre-formed high-conformability thermal pads alongside two-component addition-cure silicone potting creates a robust thermal dissipation pathway directly from bypass diodes to the ambient frame or external heat-spreading surfaces.
In contemporary junction box engineering, thermal pads and elastomeric potting gels serve complementary, indispensable functions. Pre-formed thermal conductive silicone pads provide precise, low-modulus mechanical cushioning with high through-plane thermal conductivities (ranging from 1.5 W/m·K to 6.0 W/m·K) tailored for direct placement beneath bypass diodes, copper busbars, and surface-mount power semiconductors.
Simultaneously, surrounding two-component silicone potting encapsulates the entire internal cavity, eliminating micro-voids, insulating against high-voltage surges (up to 1500V system voltages), and preventing moisture ingress under cyclic condensation (IEC 61215 / IEC 61730 standards). This multi-tier encapsulation strategy prevents solder joint fatigue, inhibits copper trace oxidation, and neutralizes electrochemical migration across dense PCBA layouts over continuous decades in desert, floating PV, and humid tropical deployments.
High volume resistivity (>10¹⁵ Ω·cm) and breakdown voltages exceeding 20 kV/mm safeguard 1500V DC utility arrays against partial discharge, leakage currents, and lightning surges.
Engineered with low glass transition temperatures (Tg) and high thermal stability, resisting cross-linking embrittlement, delamination, and mechanical cracks under severe diurnal thermal swings.
Formulated with non-halogenated metal hydrate flame retardants ensuring strict UL 94 V-0 self-extinguishing behavior without yielding toxic outgassing or promoting corrosion.
Songxi Technology is a high-tech enterprise specializing in the R&D, production, and sales of electronic adhesives. Based on silicone, polyurethane, acrylic, and epoxy systems, we provide reliable bonding, sealing, and protection solutions for power electronics, optoelectronics, new energy, automotive, and aerospace industries.
We are committed to becoming a trusted provider of functional polymer material solutions for the electronics industry. Through continuous innovation and application development, we promote the localization of high-end electronic adhesives and help intelligent devices achieve greater stability and durability across the global renewable energy infrastructure.
Empowering cutting-edge clean energy, automotive electrification, and telecommunication hardware through custom-formulated polymer chemistries.
Songxi's business covers three functional areas: adhesive & sealing, potting & protection, and thermal interface materials. Our product portfolio includes PCBA fixing adhesives, UV adhesives, sealants, thermal conductive potting compounds, thermal greases, pads, two-component thermal gels, EMI shielding sealants, and reactive hot melt adhesives.
Our products serve power batteries, photovoltaic modules, drones, automotive electronics, 5G communications, and LED lighting. We provide both standard products and customized solutions for applications such as BMS conformal coating, IGBT thermal filling, and power battery structural bonding, supported by extensive technical experience and application expertise.
Balancing mechanical compliance, high thermal dissipation kinetics, and low outgassing characteristics for automated high-volume module manufacturing.
Low initial viscosity (1,500 – 4,000 mPa·s) enables bubble-free cavity penetration through complex diode leads, while controlled cure kinetics ensure rapid line throughput in high-speed automated solar assembly lines.
Superior resistance to hydrolysis prevents polymer network depolymerization during standard 85°C / 85% RH damp-heat aging cycles exceeding 1,000 hours, keeping moisture away from sensitive electrical terminations.
Refined distillation processes ensure volatile low-molecular-weight cyclosiloxanes (D3-D10) remain strictly below threshold limits, preventing optical contamination of solar front sheets and terminal contact oxidation.
Led by a Ph.D. in Polymer Materials from Sichuan University, Songxi's R&D team has nearly twenty years of silicone application experience and has participated in over 100 product development projects. We maintain cooperation with research institutions including Chenguang Chemical Research Institute, Sichuan University, and Beijing Institute of Technology.
Certified with ISO9001, Songxi operates a comprehensive management system covering procurement, production, inspection, and after-sales service. Our products comply with RoHS and REACH requirements, with SGS verification and UL 94 V-0 flame retardant certification, ensuring consistent quality and reliable delivery.
Proven silicone materials, structural adhesives, and thermal pads engineered for high reliability in photovoltaic junction boxes and energy storage modules.
Songxi adheres to integrity and quality throughout material selection, production, and delivery, turning reliability into a competitive advantage and earning long-term customer trust through professional service and continuous improvement across global markets.