塑料科技2024，Vol.52Issue(6)：35-40,6.DOI:10.15925/j.cnki.issn1005-3360.2024.06.007
EVA-g-MAH和滑石粉对金属氢氧化物/LLDPE材料性能的影响
EVA-g-MAH and Talc on Performance of Metal Hydroxide/LLDPE Composites
摘要
Abstract
To improve the toughness and flame retardancy of metal hydroxide/polyethylene composites,talc(Talc)was used as a flame retardant synergist,maleic anhydride grafted ethylene-vinyl acetate copolymer(EVA-g-MAH)was used as a toughener,and the aluminum hydroxide/magnesium hydroxide/linear low density polyethylene(ATH/MH/LLDPE)flame-retardant composites were prepared by twin-screw extruder and injection molding.The effects of ATH/MH,EVA-g-MAH,and Talc content on the mechanical properties,flame retardancy,and morphology of flame-retardant LLDPE were studied by tensile test,impact test,limiting oxygen index test,vertical burning test,and scanning electron microscope.The results show that as the content of ATH/MH increases,the tensile strength and flame retardancy of ATH/MH/EVA-g-MAH/LLDPE increase,while the elongation at break and impact strength decrease significantly.The addition of EVA-g-MAH is beneficial to the resin matrix wrapping and dispersing of ATH/MH,which can improve the toughness and flame retardancy of ATH/MH/LLDPE simultaneously.When the total content of flame retardants(ATH,MH,Talc)is fixed at 60%,replacing 3%～11%of ATH/MH with Talc can increase the limiting oxygen index by 1.4%～4.2%,and Talc and ATH/MH have a synergistic flame-retardant effect.Replacing 7%of ATH/MH with Talc can increase the elongation at break and impact strength of Talc/ATH/MH/EVA-g-MAH/LLDPE by 50.0%and 13.4%,respectively.关键词
线型低密度聚乙烯/金属氢氧化物/马来酸酐接枝乙烯-醋酸乙烯酯共聚物/滑石粉/协同阻燃/力学性能Key words
Linear low density polyethylene/Metal hydroxide/EVA-g-MAH/Talc/Synergistic flame retardant/Mechanical properties分类
化学化工引用本文复制引用
何风,邹修敏,周松,徐淳,屈超,黄坤,甘巧..EVA-g-MAH和滑石粉对金属氢氧化物/LLDPE材料性能的影响[J].塑料科技,2024,52(6):35-40,6.基金项目
四川省科技厅项目(2023YFG0241) （2023YFG0241）
精细化工应用技术泸州市重点实验室项目(HYJH-2308-B) （HYJH-2308-B）
