Abstract: Hollow microsphere surface was modified and hollow microspheres/high-density polyethylene composite material with different proportion were prepared by extrusion. This paper systematically studies the relationship of tensile strength, elastic modulus and elongation at break of hollow microspheres/high density PE (HDPE) composite material with content (wt%) of hollow microspheres. It has been revealed that the calculated out-come is in accordance with the actual measured value. The tensile strength is slightly decreased with raising content of hollow microspheres, while the elastic modulus is increased with raising content of hollow microspheres. When the content (wt%) of hollow microspheres was 15%,the elongation at break reached the maximum.

Key words: hollow microsphere, modification, high-density polyethylene