Abstract: In order to enhance the interfacial adhesion between Vectran fibers and water-based polyurethane, the effects of tensile properties and peeling properties of Vectran reinforced membrane materials were investigated by alkali treatment and plasma treatment on Vectran fibers. The effects of surface treatment on the surface morphology and wettability of Vectran fibers were analyzed by scanning electron microscope and contact angle surface property tester. The research results show that both alkaline treatment and plasma treatment can effectively improve the interface properties of Vectran fibers, but they have different degrees of damage to the mechanical properties of Vectran reinforced membrane materials. Among them, the peel strength of Vectran reinforced membrane increased by 70.67% after being treated with 20 mol/L alkali solution for 120 min on base fabric. After 120 min treatment with 10 mol/L alkali solution, the reinforced membrane peel strength increased by 29.19%, and after 6 min with plasma treatment, the reinforced membrane peel strength increased by 13.50%. But tensile strength of the Vectran reinforced membrane materials had been reduced by 89.99% after 120 min treatment with 20 mol/L alkali solution on base fabric. The reinforced membrane tensile strength was reduced by 19.02% after 120 min treatment with 10 mol/L alkali solution, and the reinforced membrane tensile strength was reduced by 4.38% after 6 min of plasma treatment.

Key words: Vectran reinforced membrane, surface treatment, tensile strength, peel strength, composites