EVA对聚乙烯基低烟无卤阻燃电缆护套材料性能的影响  

Effect of Ethylene-Vinyl Acetate Copolymer on Properties of Low Smoke and Halogen Free Flame-Retardant Cable Sheathing Materials Based on Polyethylene

作　　者：陈龙 田洪瑜 陆海冰 高尚[2,3] 胡金平 叶斌 王平[2,3] CHEN Long;TIAN Hongyu;LU Haibing;GAO Shang;HU Jinping;YE Bin;WANG Ping(Anhui Hualing Cable Group Co.,Ltd.,Wuhu 238371,China;National and Local Joint Engineering Research Center for Special Wire and Cable Branch Center of Anhui Jianzhu University,Hefei 230601,China;Anhui Jianzhu University,Hefei 230601,China;Hefei University of Technology,Hefei 230009,China;Anhui Hualing New Material Technology Co.,Ltd.,Wuhu 238371,China)

机构地区：[1]安徽华菱电缆集团有限公司,芜湖238371 [2]特种电线电缆国家地方联合工程研究中心安徽建筑大学分中心,合肥230601 [3]安徽建筑大学,合肥230601 [4]合肥工业大学,合肥230009 [5]安徽华菱新材料科技有限公司,芜湖238371

出　　处：《电线电缆》2023年第4期14-21,共8页Wire & Cable

基　　金：国家自然科学基金(51903002);安徽省科技重大专项项目(202103a05020031);安徽省芜湖市重点研发项目(2022yf27);安徽省高校自然科学杰出青年科研项目(2022AH020024);安徽省高校哲学社会科学重大研究项目(2022AH040047);安徽建筑大学博士启动基金(2019QDZ22);安徽高校协同创新项目(GXXT-2019-017);安徽省高校省级自然科学研究项目(YJS20210509)。

摘　　要：将乙烯-乙酸乙烯酯共聚物(EVA)和聚乙烯(PE)熔融共混制备PE基低烟无卤阻燃复合材料,并研究EVA的质量分数对材料结构与性能的影响。结果表明:EVA与PE相容性较好,可促进材料内部形成无机填料网络,限制分子链的运动,改善材料热分解温度及类固行为,还可以提高炭层的致密和均匀度,抑制材料燃烧时滴落。当EVA的质量分数为15%时,复合材料的断裂伸长率为612%,极限氧指数(LOI)为26.4%,具有优异的综合性能。Ethylene-vinyl acetate copolymer(EVA)and polyethylene(PE)were melting blended for preparing PE-based low-smoke halogen-free flame-retardant composites,furthermore,the effects of EVA content on the structure and properties of the composites were studied.The results showed that inorganic filler networks were promoted in material due to the good compatibility between EVA and PE,which can limit the movement of molecular chains and enhanced the thermal decomposition temperature and solid-like behavior of the material.It can also improve the density and uniformity of the carbon layer and inhibit the dripping of the material during combustion.The elongation at break and limiting oxygen index(LOI)of the composite were 612%and 26.4%with the mass fraction of EVA reaching 15%,which had excellent comprehensive performance.

关 键 词：聚乙烯 乙烯-乙酸乙烯酯共聚物 低烟无卤 阻燃 

分 类 号：TQ332.3[化学工程—橡胶工业]