Method for treating surface of polytetrafluoroethylene product with sodium naphthalene solution

The invention discloses a method for treating the surface of a polytetrafluoroethylene product with sodium naphthalene solution, comprising the steps of preparing the sodium naphthalene solution and treating the polytetrafluoroethylene product, wherein, in the treatment progress, the conductivity value of the sodium naphthalene solution is controlled to be 22-500 microsecond/cm. The method disclosed by the invention instantaneously monitors surface treatment ability of the sodium naphthalene treating fluid through conductivity and carries out effective technology mass control; and application of the method disclosed by the invention can remarkably improve surface treatment quality of the polytetrafluoroethylene product, decrease material consumption and emission of the three wastes, and increase economic benefit of a production enterprise.