Simulation of mechanical properties of multilayered propylene-ethylene copolymer/ethylene 1-octene copolymer composites by equivalent box model and its experimental verification
Simulation of mechanical properties of multilayered propylene-ethylene copolymer/ethylene 1-octene copolymer composites by equivalent box model and its experimental verification
复制标题
多层丙烯-乙烯共聚物/乙烯-1-辛烯共聚物复合材料力学性能的等效盒模型模拟及实验验证
DOI：
10.1016/j.eurpolymj.2009.07.013
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发表时间：
2009-11-01
影响因子：
6
通讯作者：
Wen, Ming
中科院分区：
文献类型：
--
作者：
Shen, Jiabin;Wang, Ming;Wen, Ming
采用微层共挤出法制备了丙烯-乙烯共聚物（PPE）/乙烯-辛烯共聚物（POE）多层复合材料。静态和动态拉伸结果表明，多层样品的屈服强度和储能模量明显大于常规共混物。采用Kolarik提出的等效盒模型（EBM）解释了形貌对力学性能的影响。实验和理论结果表明，多层复合材料优异的力学性能是由于相的连续性。讨论了多层复合材料中界面层对力学性能的影响。POE与PPE层间界面的存在不仅导致EBM对多层复合材料力学性能预测的失效，而且由于POE与PPE层间通过界面的剪切摩擦，在损耗模量-温度谱中诱发了一个新的吸收峰。(C)2009爱思唯尔有限公司保留所有权利。
Multilayered propylene-ethylene copolymer (PPE)/ethylene 1-octene copolymer (POE) composites were prepared by a microlayered coextrusion system. Static and dynamic tensile results showed that yield strengths and storage moduli of the multilayered samples were distinctly larger than those of conventional blends. The equivalent box model (EBM) proposed by Kolarik was used to explain the effect of morphology on mechanical properties. Experimental and theoretical results indicated that the excellent mechanical properties of multilayered composites were ascribed to the phase continuity. The effects of interfacial layers in multilayered composites on mechanical properties were also discussed. The existence of interfaces between POE and PPE layers not only led to the invalidation of EBM for prediction of mechanical properties of multilayered composites with larger number of layers, but also induced a new absorbing peak in loss modulus-temperature spectrum because of the shearing friction between POE and PPE layers through interfaces. (C) 2009 Elsevier Ltd. All rights reserved.