将乙烯-醋酸乙烯酯共聚物(EVA)、丙烯酸酯弹性体(AR)和云母(Mica)熔融共混制备了一系列复合材料.动态力学分析发现,EVA与AR共混后,tanδ在5℃附近出现了新峰;在EVA-AR(80/20)中加入聚合级空间受阻酚MPDI(4-甲基-苯酚与二环戊二烯和异丁烯的反应产物),tanδ峰值逐渐增大,且峰位置逐渐向高温方向偏移.云母的加人使EVA-AR-MPDI共混物的tanδ峰位置明显向高温方向偏移,而且峰宽拓宽明显.随着云母含量的增加,高温区tanδ数值逐步变大,损耗模量E"大幅度提高,当云母含量为58.8 wt%时E"峰值由未加云母时的79 MPa增加至280 MPa,并且E"峰位置向高温偏移.氢键红外光谱和扫描电镜分析结果表明,复合材料阻尼性能有所提高.
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