Aramid fiber surface metallization treatment method

The invention belongs to the field of fiber material surface metallization treatment and particularly relates to an aramid fiber surface metallization treatment method which takes hypophosphite as reductant and metal salt as the plating solution of the main salt to deposit a metal coating on the surface of aramid fiber through chemical plating. The surface metallization treatment process includes the steps of unoiling, coarsening, sensitizing, activating, carrying out preplating and carrying out chemical plating. Through the metallization treatment method disclosed by the invention, a uniform compact nonporous metal coating can be plated on the surface of the aramid fiber, and therefore the electrical conductivity and the corrosion resistance of the aramid fiber can be improved and the service life of the aramid fiber can be prolonged. The aramid fiber plated with the metal coating can also be used as reinforcement of metal matrix composite material so as to improve the mechanical property of the composite material.