反应型复合无卤阻燃剂对EVA基复合材料性能的影响  

Effects of Reactive Composite Halogen-Free Flame Retardants on Properties of EVA-based Composites

作　　者：王平[1,2] 田洪瑜 姜越 周意杨 程龙恩 陈龙 WANG Ping;TIAN Hongyu;JIANG Yue;ZHOU Yiyang;CHENG Longen;CHEN Long(Anhui International Joint Research Centre for Advanced Building Materials,Anhui Jianzhu University,Hefei 230601,China;National and Local Joint Engineering Research Center for Special Wire and Cable Center,Wuhu 238371,China;Anhui Hualing Cable Group Co.,Ltd.,Wuhu 238371,China)

机构地区：[1]安徽建筑大学安徽省先进建筑材料国际联合研究中心,合肥230601 [2]特种电线电缆国家地方联合工程研究中心,芜湖238371 [3]安徽华菱电缆集团有限公司,芜湖238371

出　　处：《电线电缆》2025年第3期10-17,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(2021e03020008、202103a05020031);安徽省芜湖市重点研发项目(2022yf27);安徽省自然科学基金优青项目(2308085Y34);安徽省高校自然科学杰出青年科研项目(2022AH020024);安徽建筑大学博士启动基金(2023QDZ23);安徽高校协同创新项目(GXXT-2023-098、GXXT-2023-040)。

摘　　要：将不饱和磷酸酯齐聚物(unsaturated polyester oligomer,UPEO)与无机阻燃剂复配,制备了反应型复合无卤阻燃剂(OP-FRC),通过熔融共混法将其引入乙烯-醋酸乙烯共聚物(ethylene-vinyl acetate copolymer,EVA)基低烟无卤阻燃线缆护套材料中,采用热重分析仪、差示扫描量热仪、平行板流变仪、电子万能试验机、扫描电子显微镜、极限氧指数测定仪等研究UPEO对复合材料结构和性能的影响。结果表明,OP-FRC中UPEO的引入可以改善无机阻燃剂在EVA基体中的分散性,增强两者间的相互作用,促进无机填料网络的形成,并提高分子链段的运动能力,促进基体缠结结构的松弛,从而改善复合材料的耐疲劳性能、热稳定性和结晶能力。当UPEO质量分数为4%时,复合材料的断裂伸长率为215.5%,疲劳寿命为26354次,极限氧指数为31.5%。Reactive halogen-free flame retardant composite(OP-FRC) was prepared by compounding unsaturated polyester oligomer(UPEO) with inorganic flame retardants,and then OP-FRC was introduced into ethylene-vinyl acetate copolymer(EVA)-based low-smoke halogen-free flame retardant cable sheath material by melt blending.Effects of UPEO on structure and properties of composites was investigated using thermogravimetric analyzer,differential scanning calorimeter,parallel plate rheometer,electronic universal testing machine,scanning electron microscope,and limit oxygen index tester.Results showed that incorporation of UPEO in OP-FRC could improve dispersion of inorganic flame retardants in EVA-based,enhance interaction between inorganic flame retardants and EVA-based,facilitate formation of inorganic filler network,increase mobility of molecular segments,promote relaxation of entangled matrix structure,finally improve fatigue resistance,thermal stability and crystallization ability of composites.When mass fraction of UPEO was 4%,elongation at break of composites was 215.5%,fatigue life was 26 354 times,and limiting oxygen index(LOI) was 31.5%.

关 键 词：不饱和磷酸酯齐聚物 乙烯-醋酸乙烯酯共聚物 耐疲劳性能 低烟无卤阻燃 

分 类 号：TQ332.3[化学工程—橡胶工业] TM246[一般工业技术—材料科学与工程]