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首页> 外文期刊>Journal of Applied Polymer Science >Closed-loop recycling of postused garden chairs based on PP using the restabilization technique. I. Evaluation of processing parameters
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Closed-loop recycling of postused garden chairs based on PP using the restabilization technique. I. Evaluation of processing parameters

机译：使用再稳定化技术，基于PP的旧式花园椅的闭环回收。一，工艺参数评估

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摘要

A remelting-restabilization technique was applied to evaluate the closed-loop recycling of postused, white pigmented, garden chairs made from CaCO3-filled polypropylene (PP). Analysis of the randomly collected postused chairs showed only an insufficient quantity of residual active stabilizers. Different stabilization systems in selected concentrations were employed to investigate the optimum restabilization recipe for eliminating degradation effects during reprocessing. For monitoring the processing stability of the restabilized and nonrestabilized material a multiple extrusion procedure at two different reprocessing temperatures was performed. Furthermore, a repigmentation step was applied to investigate the role of the additional pigment on the processing stability of the recycled product. Finally, mechanical tests were carried out, for studying further the effect of restabilization on the mechanical performance of the recycled material. The results lead to the conclusion that restabilization for quality improvement of postused filled PP chair material during reprocessing is permitting its reuse in the original application. (C) 2002 Wiley Periodicals, Inc. [References: 18]
机译：应用了一种重熔-再稳定化技术来评估用CaCO3填充的聚丙烯（PP）制成的白色颜料后用过的花园椅的闭环再循环。对随机收集的用过的椅子的分析表明，剩余的活性稳定剂数量不足。采用选定浓度的不同稳定系统研究最佳的再稳定配方，以消除后处理过程中的降解作用。为了监测再稳定化的和未再稳定化的材料的加工稳定性，在两个不同的再加工温度下进行了多次挤出程序。此外，应用了色素沉着步骤以研究额外颜料对回收产品加工稳定性的作用。最后，进行了机械测试，以进一步研究可再稳定化对再生材料机械性能的影响。结果得出结论，在再加工过程中通过重新稳定化来提高已用过的PP椅子材料的质量，可以使其在原始应用中重复使用。 （C）2002 Wiley Periodicals，Inc. [参考：18]

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