| PVC/EVA共混体系的韧性、流变性与形态结构的关系 |
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| 引用本文： | 曾仁强,刘小平,余乃梅.PVC/EVA共混体系的韧性、流变性与形态结构的关系[J].厦门大学学报(自然科学版),1999,38(3):422-428. |
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| 作者姓名： | 曾仁强 刘小平 余乃梅 |
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| 作者单位： | 厦门大学化学系,厦门,361005 |
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| 摘 要： | 用ＤＳＣ、ＴＥＭ、ＳＥＭ与毛细管流变仪等对ＰＶＣ／ＥＶＡ材料的相容性、流变行为、加工条件与结构、性能间的关系做了较深入而全面的研究．结果表明：相容性与加工条件对材料的形态结构与性能有重要影响；随着ＥＶＡ含量或ＥＶＡ中ＶＡ含量的增加，ＥＶＡ相从分散颗粒逐渐转变到连续网络，且随着这种形态转变，材料便从脆性过渡到韧性；材料的熔体属于非牛顿流体中的假塑性流体．
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| 关 键 词： | PVC／EVA共混材料，相容性，流变性，形态，性能 |
The Study on PVC/EVA Blends:Relationships Among Structure,Compatibility,Rheological Behavivor and Properties |
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| Zeng Renqiang,Liu Xiaoping,Yu Naimei.The Study on PVC/EVA Blends:Relationships Among Structure,Compatibility,Rheological Behavivor and Properties[J].Journal of Xiamen University(Natural Science),1999,38(3):422-428. |
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| Authors: | Zeng Renqiang Liu Xiaoping Yu Naimei |
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| Abstract: | The relationships among compatibility,rheological behavior,processing conditions,structure and properties of PVC/EVA blends have been investigated by DSC,TEM,capillary rheomefer etc..Some results are as follows:(1)Partial compatibility plays an important role in the formation of EVA network structure;(2)During increasing EVA content ,the morphology of EVA phase of the blend changes from dispersed particles to continuous network,accompanied by making the blend from brittleness to ductility;(3)The melt of blend belongs to the non Neutonian and pseudoplastic fluid. |
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| Keywords: | PVC/EVA blend Compatibility Rheological behavior Morphology Property |
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