Abstract: Polyethylene(PE) was blended with hollow glass beads. The effect of various processing parameters on the properties of the blends were investigated, including the surface treatment of glass beads, toughness and crystallinity of the matrix，diameter and content of glass beads, using scanning electron microscope，polarizing microscope, and mechanical property testing. It is obvious that the silane coupling agent was beneficial to the dispersion of glass beads in the matrix. In order to achieve a high toughness of the blends, the matrix should possess an initial toughness above 5.0kJ/m2.The impact strength of composites is 38.0kJ/m2, When the Glass Bead content is 25% , diameter is 2.5μm .

Key words: high-density polyethylene, hollow glass beads, toughness, coupling agent