交联无卤阻燃LLDPE-EVA电缆料的研制.pdfVIP

现 代 塑 料 加 工 应 用 2 0 0 6 年 第 1 8 卷 第 3 期 26 M ODERN PLAST ICS PROCESSING AND APPLICAT IONS 交联无卤阻燃 LLDPE/ EVA 电缆料的研制 应启广 ( 上海方田弹性体 有限公司, 上海, 201611 ) 摘要: 以 LLDPE ( 线性低密度聚乙烯) 、EVA( 乙烯醋酸乙烯共聚物) 为基体树脂, ATH ( 氢氧化铝) 、MH ( 氢氧化镁) 为主 阻燃剂, 有机硅为阻燃增效剂, EVA gMAH ( 马来酸酐接枝乙烯醋酸乙 烯共聚物 ) 为高 分子相容 剂, DCP( 邻苯二 甲酸二壬 酯) 为交联剂制备了交联无卤阻燃 LLDPE/ EVA 电缆料。研究结果表明, 在燃烧时有机硅能促 进玻璃态无机 炭化层隔氧膜 的形成, 有效地提高共混物的氧指数。以 EVAgMAH 作为共混体系的相 容剂能够改善交 联无卤阻燃 LLDPE/ EVA 电缆 料的加工性能、力学性能和阻燃性能。 关键词: 交联 无卤阻燃 线性低密度聚乙烯 乙烯醋酸乙烯共聚物 马来酸酐接枝乙烯醋酸乙烯共聚物 电缆 Study on Crosslinked Halogen Free Flame Retardant LLDPE/ EVA Compound for Cable Ying Qiguang ( Shanghai For ntier Elastom er Co. , Ltd. , Shanghai, 201611 ) Abstract: The halogenfree flame retardant PE/ EVA com pound for cable w as made from the basic resin LLDPE and EVA , the m ain flame retardant reag ent ATH and MH , the secondary flame retardant agent o rganic silicon, the poly mer co mpatibilizing ag ent EVAg MAH and crosslinking agent DCP. The research results show ed that g lass state inorg anic carbonizing coat w as form ed and the o xy gen index of the compound w as effectively increased by org anic silicon. Processing, m echnical and flame retardant properties of the crosslinked halog en free flame retardant PE/ EVA com pound w as enhanced w hen EVAgM AH w as used as compatibilizing agent of the blend sy stem. Key words: crosslink; halogen free flame retardant; liner low density polyethy lene; ethylene vinylacetate copolymer; ethylenevinylacetate grafting maleic anhydride copolymer; cable 交联的无卤阻燃电缆料能大幅度地提高其