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首页> 外文期刊>Journal of Applied Polymer Science >Compatibilization of PE/PS and PE/PP blends. I. Effect of processing conditions and formulation
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Compatibilization of PE/PS and PE/PP blends. I. Effect of processing conditions and formulation

机译：PE / PS和PE / PP共混物的相容性。一，加工条件和配方的影响

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The objective of this work was to study the effectiveness of low-cost commercial compatibilizers and several processes (internal mixer, single- and twin-screw extruders) for two types of plastic blends: high-density polyethylene/polypropylene and high-density polyethylene/polystyrene blends, to gain insight into the recycling of wastes from those frequently encountered mixed plastics. Blends going from a pure A to a pure B component, with and without a compatibilizer, were prepared using an internal mixer, a corotating twin-screw extruder, as well as a single-screw extruder to follow an industrial-convenient process. In both cases, the analyses of blend morphologies highlighted the poor adherence between the two phases in the uncompatibilized blends. Compatibilized blends display better adherence between phases and the ability to process blends made from both single- and twin-screw extruders. When adding a compatibilizer, the viscosity of each blend (PE/PP or PE/PS) increased due to a better adhesion of the phases. Charpy impact tests showed that the presence of the compatibilizer in PE/PS blends increased their impact properties. Indeed, the improvement of the adhesion between the two phases enabled stress transfer at the interface. A single-screw extruder seems to be efficient as a processing method on an industrial scale when a compatibilizer is used. (C) 2003 Wiley Periodicals, Inc. [References: 37]
机译：这项工作的目的是研究低成本商业相容剂和几种工艺（内部混合机，单螺杆和双螺杆挤出机）对两种类型的塑料混合物的有效性：高密度聚乙烯/聚丙烯和高密度聚乙烯/聚苯乙烯混合物，以深入了解那些经常遇到的混合塑料所产生的废物回收利用。使用内部混合器，同向旋转双螺杆挤出机和单螺杆挤出机，按照工业上便利的方法，制备从纯A组分到纯B组分的混合物（有或没有增容剂）。在两种情况下，共混物形态的分析都突出显示了不相容共混物中两相之间的粘附性差。相容的共混物在各相之间显示出更好的粘附性，并且能够加工由单螺杆和双螺杆挤出机制成的共混物。当添加相容剂时，由于各相之间的附着力更好，每种共混物（PE / PP或PE / PS）的粘度都增加了。夏比冲击试验表明，增容剂在PE / PS共混物中的存在会提高其冲击性能。实际上，两相之间粘附力的改善使得能够在界面处转移应力。当使用相容剂时，单螺杆挤出机作为工业规模的加工方法似乎是有效的。 （C）2003 Wiley Periodicals，Inc. [参考：37]

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