Fig. 6: Properties of FEVE and F-T-S films.

a Light transmittance of the FEVE and F-T/S films; (b) ultraviolet absorption of t FEVE and F-T/S films; (c) Contact angles of the films before and after 480 hUV degradation (d) pencil hardness and shear strength of films before and after 480-hUV degradation; (e) tensile strength of samples made by coating reinforcement agents on the Xuan paper before and after 480-hUV degradation.