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首页> 外文期刊>Journal of Polymers and the Environment >Physical Characterization and Pre-assessment of Recycled High-Density Polyethylene as 3D Printing Material
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Physical Characterization and Pre-assessment of Recycled High-Density Polyethylene as 3D Printing Material

机译：再生高密度聚乙烯作为3D打印材料的物理特性和预评估

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摘要

3D printing has received lots of attention due to its limitless potential and advantages in comparison to traditional manufacturing processes. This study focuses on the most popular type of home 3D printers, namely fused filament fabrication (FFF) printers, which use plastic filaments as the feedstock. The rather high material cost and large amount of plastic waste generated by FFF 3D printers have driven the need for plastic filaments produced from recycled plastic waste. This study evaluates, in terms of physical characterization, the feasibility of using recycled high-density polyethylene (HDPE), one of the most commonly used plastics, as the feedstock for 3D printers, in comparison with the common acrylonitrile butadiene styrene plastic pellets. In-house extrusion using recycled HDPE pellets and flakes is possible. The diameter consistency and extrusion rate results, along with other physical characterization results, including differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared spectroscopy, Raman spectroscopy, and water absorption, suggest that making filaments from recycled HDPE pellets is a viable option, as the obtained filament has favorable water rejection and comparable extrusion rate and thermal stability. Existing methods for overcoming the warping and adhesion problems in 3D printing with HDPE were also reviewed. In order to increase the market competitiveness of waste-derived filaments, optimization of the extrusion process, studies on the mechanical and aging properties, and development of a standard characterization methodology and database are crucial.
机译：与传统制造工艺相比，3D打印具有无限的潜力和优势，因此备受关注。这项研究的重点是最流行的家用3D打印机类型，即熔融长丝制造（FFF）打印机，该打印机使用塑料长丝作为原料。 FFF 3D打印机产生的相当高的材料成本和大量的塑料废料推动了对由回收塑料废料生产的塑料丝的需求。这项研究从物理特性方面评估了与常见的丙烯腈丁二烯苯乙烯塑料颗粒相比，最常用的塑料之一的回收高密度聚乙烯（HDPE）作为3D打印机原料的可行性。使用回收的HDPE颗粒和薄片进行室内挤出是可能的。直径一致性和挤出速率的结果以及其他物理表征结果（包括差示扫描量热法，热重分析，傅里叶变换红外光谱，拉曼光谱和吸水率）表明，由回收的HDPE粒料制成长丝是可行的选择，因为制得的长丝具有良好的拒水性能，可比的挤出速率和热稳定性。还回顾了现有的克服HDPE 3D打印中翘曲和粘合问题的方法。为了提高废丝的市场竞争力，优化挤出工艺，研究机械性能和老化性能以及开发标准表征方法和数据库至关重要。

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