A modified nanocomposite material is provided, which includes an inorganic filler, a silicon dioxide, and a polymer matrix, in which the silicon dioxide is binding with a hydroxyl bond of the inorganic filler to form a silicon dioxide-inorganic filler, and the polymer matrix is dispersed over the silicon dioxide-inorganic filler. Another modified nanocomposite material is further provided, which includes an inorganic filler, a silicon dioxide, and a polymer matrix, in which the silicon dioxide is binding with a hydroxyl bond of the inorganic filler to form a silicon dioxide-inorganic filler, the organic modifier is associated with the silicon dioxide-inorganic filler and the polymer matrix is dispersed over the silicon dioxide-inorganic filler and the organic modifier.