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热塑性塑料的分析与数值模型：旨在基于颗粒挤出的增材制造的综述

Analytical and Numerical Models of Thermoplastics: A Review Aimed to Pellet Extrusion-Based Additive Manufacturing.

作者信息

Pricci Alessio, de Tullio Marco D, Percoco Gianluca

机构信息

Department of Mechanics, Mathematics and Management (DMMM), Polytechnic University of Bari, Via E. Orabona 4, 70125 Bari, Italy.

出版信息

Polymers (Basel). 2021 Sep 18;13(18):3160. doi: 10.3390/polym13183160.

DOI:10.3390/polym13183160
PMID:34578060
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8467613/
Abstract

Recent developments in additive manufacturing have moved towards a new trend in material extrusion processes (ISO/ASTM 52910:2018), dealing with the direct extrusion of thermoplastic and composite material from pellets. This growing interest is driven by the reduction of costs, environmental impact, energy consumption, and the possibility to increase the range of printable materials. Pellet additive manufacturing (PAM) can cover the same applications as fused filament fabrication (FFF), and in addition, can lead to scale towards larger workspaces that cannot be covered by FFF, due to the limited diameters of standard filaments. In the first case, the process is known as micro- or mini-extrusion (MiE) in the literature, in the second case the expression big area additive manufacturing (BAAM) is very common. Several models are available in literature regarding filament extrusion, while there is a lack of modeling of the extrusion dynamics in PAM. Physical and chemical phenomena involved in PAM have high overlap with those characterizing injection molding (IM). Therefore, a systematic study of IM literature can lead to a selection of the most promising models for PAM, both for lower (MiE) and larger (BAAM) extruder dimensions. The models concerning the IM process have been reviewed with this aim: the extraction of information useful for the development of codes able to predict thermo-fluid dynamics performances of PAM extruders.

摘要

增材制造的最新进展已朝着材料挤出工艺（ISO/ASTM 52910:2018）的新趋势发展，涉及从粒料直接挤出热塑性材料和复合材料。成本降低、环境影响减小、能源消耗降低以及增加可打印材料范围的可能性推动了这种日益增长的兴趣。粒料增材制造（PAM）可以涵盖与熔丝制造（FFF）相同的应用，此外，由于标准丝材直径有限，PAM还可以扩展到FFF无法覆盖的更大工作空间。在第一种情况下，该工艺在文献中被称为微挤出或迷你挤出（MiE），在第二种情况下，大面积增材制造（BAAM）这一表述非常常见。文献中有几种关于丝材挤出的模型，而PAM中的挤出动力学建模则较为缺乏。PAM中涉及的物理和化学现象与注塑成型（IM）的特征现象有高度重叠。因此，对IM文献进行系统研究可以为PAM选择最有前景的模型，无论是较小尺寸（MiE）还是较大尺寸（BAAM）的挤出机。为此目的，对有关IM工艺的模型进行了综述：提取有助于开发能够预测PAM挤出机热流体动力学性能的代码的有用信息。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/0a1ba9a1ca34/polymers-13-03160-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/fd99810f4ee1/polymers-13-03160-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/7fdb134c816e/polymers-13-03160-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/c67fb8691dc3/polymers-13-03160-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/9a5d3a0d2e4c/polymers-13-03160-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/4943aa15d699/polymers-13-03160-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/8aa1f5cea01c/polymers-13-03160-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/1088745bc51c/polymers-13-03160-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/8455fea40c3b/polymers-13-03160-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/98adb73f9caf/polymers-13-03160-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/9980537127a9/polymers-13-03160-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/0a1ba9a1ca34/polymers-13-03160-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/fd99810f4ee1/polymers-13-03160-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/7fdb134c816e/polymers-13-03160-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/c67fb8691dc3/polymers-13-03160-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/9a5d3a0d2e4c/polymers-13-03160-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/4943aa15d699/polymers-13-03160-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/8aa1f5cea01c/polymers-13-03160-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/1088745bc51c/polymers-13-03160-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/8455fea40c3b/polymers-13-03160-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/98adb73f9caf/polymers-13-03160-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/9980537127a9/polymers-13-03160-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ac9/8467613/0a1ba9a1ca34/polymers-13-03160-g011.jpg

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