关键词: 舰船用电缆护套料, 乙烯－醋酸乙烯共聚物, 茂金属聚烯烃弹性体, 纳米级改性氢氧化铝, 辐射交联, 力学性能, 阳燃性能

Abstract: Cable sheaths was prepared from ethylene-vinyl acetate copolymer (EVA), ethylene-octene copolymer (POE), and nano-aluminum hydroxide (ATH) and was radiation crosslinked. The effect of formula, the type and content of ATH, and radiation dose on the mechanical and flame-retardant properties were investigated. With increasing POE content, the tensile strength, elongation at break, and thermal aging resistance of the compound increased, and its hardness decreased. ATH improved the flame retardancy of the compound. Radiation crosslinking enhanced the mechanical properties. The optimal recipe was found to be EVA /POE/ATH ＝90/10/60 and the optimal radiation dose was 80 kGy.