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首页> 外文会议>9th Annual Global Plastics Environmental Conference (GPEC) Feb 26-27, 2003 Detroit MI >Using Experimental Interpolymers to Upgrade Mechanical Properties of Recycled Thermoplastics
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Using Experimental Interpolymers to Upgrade Mechanical Properties of Recycled Thermoplastics

机译：使用实验性互聚物来提高再生热塑性塑料的机械性能

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摘要

The aim of this work was to evaluate routes to upgrade recycled automotive engineering plastics, principally thermoplastic polyolefin (TPO) and polypropylene (PP). Recycled automotive plastics have been collected in significant volumes, but these materials are not recycled as they often do not maintain the desired specifications demanded from the corresponding virgin resins. The plastic may either be contaminated by other plastics or coating materials, or have deteriorated during the service life or during reprocessing. An experimental line of both the ethylene-styrene interpolymers (ESI) and the ethylene-propylene-styrene interpolymers (EPS) were used to successfully improve the impact strength of recycled TPO and recycled PP from the automotive industry. Similar results were seen after the addition of Nordel~R ethylene-propylene elastomer (EPDM). The stiffness of these recycled blends of engineering polyolefin thermoplastics and interpolymers was reduced. The reduction in stiffness may be compensated for by the addition of filler to the system. Optimised formulations may be blended to meet desired specifications. We show how the experimental interpolymers, which possess a good affinity for inorganic filler, are ideal for both improving the impact strength and polymer/filler interfacial strength. Tensile mechanical properties and dynamic mechanical properties of the blends were used to help optimise the formulation.
机译：这项工作的目的是评估升级再生汽车工程塑料的途径，主要是热塑性聚烯烃（TPO）和聚丙烯（PP）。回收的汽车塑料已经被大量收集，但是这些材料没有被回收，因为它们通常不能保持相应的原始树脂所要求的规格。该塑料可能被其他塑料或涂料污染，或者在使用寿命或再加工过程中变质。乙烯-苯乙烯互聚物（ESI）和乙烯-丙烯-苯乙烯互聚物（EPS）的实验生产线用于成功提高汽车行业回收的TPO和回收的PP的冲击强度。加入Nordel〜R乙烯-丙烯弹性体（EPDM）后，观察到相似的结果。这些工程聚烯烃热塑性塑料和互聚物的再循环共混物的刚度降低了。刚度的降低可以通过向系统中添加填料来补偿。可以掺合优化配方以满足所需规格。我们展示了对无机填料具有良好亲和力的实验性共聚体如何既理想地改善冲击强度又改善了聚合物/填料界面强度。共混物的拉伸机械性能和动态机械性能用于帮助优化配方。

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