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首页> 外文期刊>Journal of Applied Polymer Science >SINGLE SCREW EXTRUSION COMPOUNDING OF PARTICULATE FILLED THERMOPLASTICS - STATE OF DISPERSION AND ITS INFLUENCE ON IMPACT PROPERTIES
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SINGLE SCREW EXTRUSION COMPOUNDING OF PARTICULATE FILLED THERMOPLASTICS - STATE OF DISPERSION AND ITS INFLUENCE ON IMPACT PROPERTIES

机译：颗粒状完整热塑性塑料的单螺杆挤出复合材料-分散状态及其对冲击性能的影响

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The compounding of calcium carbonate filled polypropylene (PP) is discussed with reference to a single-screw extruder and variants of mixing sections. The mixing section on the screw is exchangeable, and two dispersive mixing elements, namely the Zorro and the Maddock elements, were used. The calcium carbonate was surface treated with a liquid titanate coupling agent (LICA12). The impact strength was measured by a notched Izod impact tester with specimens having a U-shaped sharp notch. The fracture toughness for the PP homopolymer and the filled composites was determined using fracture mechanics principles. The results were correlated with the state of dispersion of the calcium carbonate filler. The effects of filler concentration and surface treatment were examined as well. Correlation between state of dispersion and impact properties for calcium carbonate filled PP was obtained. We also investigated the effect of various mixing elements on the state of dispersion. The experimental results indicate that good dispersion would improve the impact properties of the polymer matrix, but only at moderate filler loading. (C) 1996 John Wiley & Sons, Inc. [References: 36]
机译：参照单螺杆挤出机和混合段的变型讨论碳酸钙填充的聚丙烯（PP）的配混。螺杆上的混合部分是可更换的，并且使用了两个分散混合元素，即Zorro和Maddock元素。用液体钛酸酯偶联剂（LICA12）对碳酸钙进行表面处理。用带缺口的艾佐德（Izod）冲击测试仪用具有U形尖锐缺口的样品测量冲击强度。使用断裂力学原理确定PP均聚物和填充复合材料的断裂韧性。结果与碳酸钙填料的分散状态相关。还检查了填料浓度和表面处理的影响。获得了碳酸钙填充PP的分散状态与冲击性能之间的相关性。我们还研究了各种混合元素对分散状态的影响。实验结果表明，良好的分散性将改善聚合物基体的冲击性能，但仅在适度的填料负载下。 （C）1996 John Wiley＆Sons，Inc. [参考：36]

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