动态流变法表征聚丙烯复合材料中粒子的分散效果
发布时间：2019-05-09 20:30
【摘要】：通过密炼机熔融共混制备了一种聚丙烯阻燃抗静电复合物,在不同混合时间(10、12和14 min)获得不同粒子分散效果的聚丙烯材料;通过扫描电子显微镜、万能力学测试机、旋转流变仪对其进行表征。电镜显示较长时间密炼的样品中,树脂与阻燃剂界面黏合增强,炭黑团聚减少;对应样品的拉伸断裂伸长率和冲击强度较高。流变测试也说明不同混合时间的粒子填充复合材料的流变性能有差异。通过"两相模型"拟合流变数据定量分析不同分散效果样品中粒子和高分子链的相互作用,粒子对高分子链的应变放大效应、黏弹贡献均随分散效果的变好而增加。
[Abstract]:A flame retardant and antistatic composite of polypropylene was prepared by melt blending of mixer. Polypropylene materials with different particle dispersion effects were obtained at different mixing time (10, 12 and 14 min). It was characterized by scanning electron microscope, universal mechanical testing machine and rotating rheometer. The electron microscope showed that the interfacial adhesion between resin and flame retardant was strengthened and the agglomeration of carbon black decreased, and the tensile elongation at break and impact strength of the corresponding samples were higher. Rheological tests also show that the Rheological properties of particle filled composites with different mixing time are different. The interaction between particles and polymer chains in samples with different dispersion effects was quantitatively analyzed by using "two-phase model" fitting rheological data. The strain amplification effect of particles on polymer chains and the viscoelastic contribution increased with the improvement of dispersion effect.
【作者单位】： 北京化工大学机电工程学院;北京低碳清洁能源研究所;
【基金】：中国航空科学基金(201535S9001) 中央高校基本科研业务费(JD1509)资助
【分类号】：TB33;TQ325.14
，
本文编号：2473066
[Abstract]:A flame retardant and antistatic composite of polypropylene was prepared by melt blending of mixer. Polypropylene materials with different particle dispersion effects were obtained at different mixing time (10, 12 and 14 min). It was characterized by scanning electron microscope, universal mechanical testing machine and rotating rheometer. The electron microscope showed that the interfacial adhesion between resin and flame retardant was strengthened and the agglomeration of carbon black decreased, and the tensile elongation at break and impact strength of the corresponding samples were higher. Rheological tests also show that the Rheological properties of particle filled composites with different mixing time are different. The interaction between particles and polymer chains in samples with different dispersion effects was quantitatively analyzed by using "two-phase model" fitting rheological data. The strain amplification effect of particles on polymer chains and the viscoelastic contribution increased with the improvement of dispersion effect.
【作者单位】： 北京化工大学机电工程学院;北京低碳清洁能源研究所;
【基金】：中国航空科学基金(201535S9001) 中央高校基本科研业务费(JD1509)资助
【分类号】：TB33;TQ325.14
，
本文编号：2473066
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