High-performance crosslinked ethylene and tetrafluoroethene copolymer insulated cable and preparation method thereof

The invention discloses a high-performance crosslinked ethylene and tetrafluoroethene copolymer insulated cable and a preparation method thereof. The insulated cable comprises a lead (1), an insulation sleeve (2), a shielding sleeve (3) and a sheath (4), wherein the insulation sleeve (2), the shielding sleeve (3) and the sheath (4) sleeve the lead (1) successively from inside to outside, the insulation sleeve (2) and the sheath (4) include crosslinked ethylene and tetrafluoroethene copolymer sleeves respectively, and the shielding sleeve (3) is a silvered aramid fiber braided sleeve. The insulated cable prepared by the method is high in insulatiing, mechanical and radiation-hardening properties and is chemically stable in the vacuum environment.