Analysis Of The "core Rod" Structure In Insulators

In the polymer suspension insulator structure, the mandrel is a crucial component responsible for providing mechanical strength and electrical insulation. Typical mandrel materials include glass fiber and epoxy resin, formed through a special pultrusion or winding process.

The glass fiber is usually E-glass or E-CR glass, used as a reinforcing material to form a composite material with the epoxy resin matrix. The epoxy resin, along with curing agents, accelerators, and other additives, is mixed with the fiber and molded together, giving the mandrel sufficient structural strength and dimensional stability.

During the production of the suspension type insulator structure, the pultrusion parameters, fiber density, and resin ratio of the mandrel are precisely controlled to maintain the overall reliability and performance consistency of the composite tension insulator structure.

The final mandrel forms the inner skeleton of the high voltage transmission line insulators structure. In high-voltage transmission lines, this mandrel supports the external skirts and fittings, while also bearing the responsibilities of mechanical tension and electrical insulation, making it the core component of the entire overhead power line insulators structure.