Method for modifying aramid fiber for insulating pull rod based on dopamine secondary treatment

The invention relates to an aramid fiber modification method for an insulating pull rod based on dopamine secondary treatment. The aramid fiber modification method is technically characterized by comprising the following steps: cleaning and drying aramid fibers for the insulating pull rod; placing the aramid fiber in a dielectric barrier discharge plasma device for plasma modification treatment; the aramid fibers are soaked in a dopamine solution to be subjected to dopamine modification treatment; carrying out cleaning and drying treatment on the modified aramid fiber; carrying out epoxy resin vacuum pressure impregnation on the aramid fiber; and performing high-temperature curing treatment on the aramid fiber insulating pull rod subjected to vacuum pressure impregnation to obtain a modified aramid fiber insulating pull rod finished product. The dielectric barrier discharge plasma is combined with dopamine to secondarily process the aramid fiber for the insulating pull rod, so that the surface activity of the