With the rapid popularization of new energy vehicles, charging guns, as external connection components that are used frequently, are exposed to rain, moisture, temperature changes, and complex outdoor conditions for extended periods. Their internal PCB boards not only carry out signal transmission and current control functions but also directly affect the safety, stability, and service life of the entire gun.
Once the PCB protection is not in place, it is extremely prone to:
The intrusion of moisture leads to electrical leakage and short circuits. Humid environments cause a decline in insulation performance. Temperature cycling results in stress concentration and solder joint failure. Therefore, higher requirements are placed on the potting materials inside PCBs.
Key Challenges High waterproof grade requirements: Long-term stability to achieve IP67 moisture resistance + reliable electrical insulation performance Possess a certain adhesive strength with PC housing and wiring harness to prevent vibration and loosening Process-friendly: Manual potting is less prone to bubbling, with feasible rework No stress, cracking, or corrosion during long-term use Main recommended solution for electronic components: SIPC 1815 silicone potting adhesive SIPC 1815 is a two-component condensation de-alcoholized silicone potting adhesive, specifically designed for applications such as new energy vehicle charging guns and outdoor electronic modules.
Product advantages:
✔ Excellent waterproof performance, easily meeting IP67 requirements ✔ Good fluidity, easy to spread and spread without entraining bubbles when manually pouring glue ✔ Repairable design, reducing maintenance and after-sales costs ✔ Low curing shrinkage rate, no corrosion, no internal stress, protecting PCB and solder joints ✔ Stable high-temperature electrical insulation performance, adapting to temperature rise environment during charging process ✔ Good adhesion to PC housing and wiring harness, taking into account both sealing and structural fixation ✔ Waterproof, moisture-proof, and high reliability for long-term use View SIPC 1815 details 👉 Especially suitable for charging gun products with high requirements for reliability, maintainability, and process friendliness.
Alternative: EP 1708 Epoxy Potting Compound (for High Strength Requirements) When the application scenario leans more towards structural strength, damage resistance, and tamper resistance, the EP 1708 epoxy potting solution can be chosen.
Product Features:
✔ High strength, high bonding strength, resistance to cracking, excellent toughness ✔ Shore D 78, with confidentiality and anti-tampering effects ✔ Solvent-free, no curing by-products, high reliability ✔ Suitable for charging gun designs that do not require high reworkability and emphasize structural fixation. View EP 1708 details. Solution summary: Pursuit of long-term reliability, waterproof and moisture-proof, maintainability → SIPC 1815 silicone potting adhesive. Emphasis on high strength, resistance to damage, and anti-tampering → EP 1708 epoxy potting adhesive. Two solutions can be flexibly selected according to different vehicle models, charging gun grades, and usage environments.
Tags: IP67 potting compound · PCB waterproof potting · charging gun PCB potting · new energy vehicle charging gun potting compound · silicone potting compound · epoxy potting compound
