How to Select Potting Compounds for New Energy Vehicle Charging Guns: ELAPLUS PUR 1645 Two-Component Polyurethane Potting Solution
Charging guns for new energy vehicles are constantly exposed to repeated plugging/unplugging, vibration, thermal cycling, outdoor humidity, rainwater, dust and electrical loads. For internal wiring harnesses, terminals, control circuits, connecting structures and cavity sealing positions of charging guns, potting compound is more than just a filling material — it is a core material that determines the product’s waterproofing, moisture resistance, electrical insulation, vibration resistance, weatherability and long-term reliability. Inside a charging gun lies a complicated cavity with dense wiring harnesses and tiny gaps between terminals and plastic housings. Potting compounds with excessively high fluidity tend to leak, overflow and cause contamination. Overly rigid cured resin, by contrast, may generate internal stress under low temperatures or long-term vibration from repeated plugging,…
