The performances of polypropylene random(PP-R) resin were improved through adding the anatase titanium dioxide.The modification process of nano-TiO_2 and the influence of nano-TiO_2 on the performances of PP-R resin,such as mechanical properties,thermal properties and ultraviolet(UV) aging behavior were investigated.The results show that the nano-TiO_2 modified with 6%(by mass) Na_2SiO_3 possesses better dispersing character.Compared with pure PP-R resin,the performances of PP-R with 4%(by mass) modified na...