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EVA/TPU共混物热氧老化性能研究

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  • Key Words:乙烯-乙酸乙烯酯共聚物;;热塑性聚氨酯弹性体;;共混物;;热氧老化

  • Abstract:研究4种不同组合的乙烯-乙酸乙烯酯共聚物(EVA)/热塑性聚氨酯(TPU)共混物热氧老化前后物理性能的变化规律。结果表明,EVA/TPU共混物老化后总体趋势是邵尔A型硬度、100%定伸应力和拉伸强度增大,拉断伸长率减小;在EVA/聚醚型TPU(T8)并用比为50/50时,共混物老化后出现气泡,老化规律异常。乙酸乙烯酯质量分数为0.4的EVA(E4)/T8共混物在E4/T8并用比为75/25时,老化前后平均的物理性能变化率较小,为较佳组合。

  • Issue:07

  • Translation or Not:no

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