The tensile properties of EVA/LDPE composites were studied by adding MH or ATH particles. The tensile strength and elongation at break decreased with increasing MH or ATH. Aluminum magnesium composite halogen-free flame retardant was mixed with MH, ATH, zinc borate and red phosphorous. The EVA/LDPE new style halogen-free retardant composites were prepared by direct blending methods. Tensile and flame retardant properties of composite materials were studied using different prescription. When the mass ratio of MH and ATH is 40 : 20, zinc borate is 20 phr, red phosphorous is 4 phr, the tensile properties are well, and the flame retardant properties of materials meet UL94 V-0 requirements.%将氢氧化镁(MH)或氢氧化铝(ATH)添加到乙烯-醋酸乙烯酯共聚物(EVA)/低密度聚乙烯(LDPE)中,通过拉伸试验测试材料的拉伸性能变化规律.研究发现,随MH或ATH含量增加,EVA/LDPE复合材料的拉伸强度和断裂伸长率逐渐降低.以MH和ATH为无卤基材结合硼酸锌、红磷复配制备无卤阻燃剂,通过正交试验获得了最佳复配阻燃剂配方,结果表明,在ATH和MH总量为60份的条件下,当MH与ATH配比为40∶20,硼酸锌用量为20份,红磷用量为4份时,无卤阻燃剂对EVA/LDPE材料的拉伸性能达到最佳,该配方下材料阻燃性能满足垂直燃烧等级UL-94 V-0级,综合性能优异.
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