Abstract: A selfmade compatibilizer was used in blends of recycling PET and PE, and the PET/PE alloy tubes was developed. The tube not only has a perfect appearance and low price, but also good properties, including the tensile strength of 33.2 MPa, elongation at break of 151 %, impact strength of 40.3 kJ/m2, Vicat softening temperature(A50) of 81.2 ℃, and ring stiffness of 5.1 kN/m2. In addition, PET/PE alloy pipes could be processed without predrying.

Key words: polyethylene terephthalate, polyethylene, recovery, pipe, ring stiffness