| 摘要 |
PURPOSE:A composition having high strength, high elasticity, high surface tension and extremely improved adhesiveness, consisting of a specific polyethylene which is irradiated with ultraviolet rays or treated with a chemical reagent. CONSTITUTION:A molded article having >=180kg/mm<2> tensile strength, >=2,700kg/mm<2> modulus in tension and >=40erg/cm<2> surface free energy, comprising a polyethylene having at least 700,000 intrinsic-viscosity molecular weight. The molded article is fiber or film and has many channels on the surface. It is obtained by treating the polyethylene having preferably 1,000,000 viscosity- average molecular weight by ultraviolet-light irradiation, corona discharge or fluorine gas treatment. Preferably the physical treatment and/or chemical surface activating treatment is combined with steam treatment. |
