Why PBT is an Ideal Material for Charging Gun Connectors

  The selection of materials for charging gun connection bases offers several options, with PET, PBT, and PA all being considered by plastic manufacturers. While many customers prioritize a PA + GF + FR (Polyamide + Glass Fiber + Flame Retardant) formulation for its overall performance, PBT+FR becomes the superior choice when dimensional stability and minimal shrinkage are critical. A PET material selection program is also a viable alternative. Charging gun materials must pass rigorous tests, including mechanical, temperature resistance, flame retardant, and electrical performance testing. PBT, a thermoplastic polyester, is exceptionally suited for this application. Its advantages are numerous: excellent mechanical properties, high insulation, cost-effectiveness, strong weather resistance, and superior thermal performance make it an ideal material for the plugs and sockets of charging guns. For the connection base specifically, if the preferred PA+GF+FR solution is not suitable, the PBT material selection plan is straightforward: PBT+FR is the first choice, followed by PBT reinforced with 15-30% glass fiber and flame retardant (PBT+GF15-30+FR) for enhanced strength.