A research for modification of PE flake-material's adhesiveness by radiation-graft

The flake-materials (thickness = 4 mm and 1.2 mm) of lower density PE are selected as samples. By putting them in aqueous solution of acrylic acid, the graft copolymerization is completed by 60Co γ-irradiation. So on the surfaces of flake-samples the monomer of acrylic acid is grafted, and the samples' surfaces are transformed from non-polar ones to the ones with polar groups. Thus the surface-adhesiveness of PE flake-material is modified much better. With different adhesives, the adhere-links of modified and primary flake-samples are accomplished respectively, then the surfaces' adhesive strength of them is measured. The measured results show that the surface-adhesiveness of modified flake-samples is much better than that of primary samples