Recommended potting compound for capacitors: PU512AB/PU556LAB potting compound
Capacitors are commonly used passive components in electronic circuits, mainly used for storing charge, filtering, DC blocking, and coupling. During the manufacturing process of capacitors, potting glue is often injected into the capacitor to improve its stability and reliability.
Shanghai Hinnel
2025/06/19
Core Requirements for Capacitor Potting
Capacitor operating environments typically include:
Temperature range: The operating temperature of capacitors is generally between -40℃ and 70℃. Temperatures that are too high or too low will affect the performance and lifespan of the capacitor.
Chemical environment: Some capacitors are sensitive to chemicals and should be kept away from harmful chemicals to prevent corrosion and damage.
Electromagnetic interference: Strong electromagnetic fields may cause uneven charge distribution inside the capacitor, affecting its stability and lifespan.
Vibration and impact: Capacitors should be protected from strong vibrations and impacts, as this may damage the internal structure and affect their normal operation.
Therefore, when selecting potting glue for capacitors, consider whether the glue is temperature-resistant, chemically resistant, mechanically sound, and impact-resistant.
Recommended Products: HNPU512AB Black Polyurethane Potting Glue
HNPU512AB This is a two-component, room temperature or heated curing polyurethane sealant. After mixing, it has good workability, a long working time, and a moderate curing speed. After curing, the surface is smooth and glossy, with high gel strength, good toughness, excellent flame retardancy and electrical insulation, suitable for potting film capacitors.
· Very good fluidity and permeability
· Good electrical properties, waterproof and moisture-proof
· Excellent low-temperature characteristics, flame retardancy and thermal conductivity
· High gel strength, good toughness, good adhesion to metals, plastics, and wire harnesses
· High temperature and humidity resistance (after 85% relative humidity 85 and temperature 1000 ℃ conditions for
· hours of humidity and heat test) -45~125℃ )
HNPU556LAB Polyurethane Potting Glue
HNPU556L This is a two-component, room temperature or heated curing polyurethane sealant. After mixing, it has good workability, a long working time, and a moderate curing speed. After curing, the surface is smooth and glossy, with excellent flame retardancy and electrical insulation, suitable for potting and protecting electronic products operating in humid and vibrating environments.
· Long working time, moderate curing speed, excellent self-defoaming performance
· The cured product has good electrical properties, waterproof and moisture-proof
· Excellent low-temperature characteristics, flame retardancy and thermal conductivity
· The cured product has a smooth and glossy surface and good adhesion to the housing
The above is an introduction to capacitor glue solutions provided by Shanghai Hinnel. For more information on polyurethane product performance and related information, please contact Hinnel New Materials for free samples and technical support via online contact, website messages, phone calls, or emails!
Related Articles: Common Problems and Solutions for Polyurethane Potting Glue
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