Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability

Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability
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塑料自由成型、开孔结构的生产率、再现性和液体渗透性的研究

DOI:
10.1007/978-3-030-54334-1_9
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
C. Dalmer
C. Dalmer
中科院分区:
--
文献类型:
--
作者:
E. Moritzer;A. Hirsch;C. Dalmer

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Arburg Plastic Freeforming(APF)是一种增材制造工艺,可分层生产三维热塑性部件。这些部件是通过沉积细小的熔融塑料滴来生产的。有源电力滤波器的主要优点是关联机器系统的开放参数控制。因此,工艺参数可以针对不同的应用进行优化。APF的一个特殊的和新的应用是生产互连的多孔结构。由于这是该生产工艺的一种新方法,因此必须首先证明一般生产率和重现性。因此,确定了影响开孔结构的相关工艺参数。单个塑料液滴的体积、液滴之间的距离和层厚度是三个决定性的影响因素。通过使用分析方法,在结构中创建的自由空间由均匀构造的互连孔结构描述。这意味着孔隙在三维空间中相互连接。通过重复生产和制造过程中改变的条件来评估可再生性。此外,以不影响孔径的方式评价几何形状的倍增和变化。沉积第一层时的不平整是由构建平台的不平整引起的。设置合适的测试装置以确定液体渗透性。确定特征值以描述对液体的渗透性。
The Arburg Plastic Freeforming (APF) is an additive manufacturing process which allows the production of three-dimensional thermoplastic components in layers. The components are produced by depositing fine, molten plastic droplets. The main advantage of the APF is the open-parameter control of the associated machine system. Thus, the process parameters can be optimized for individual applications.A special and new application of the APF is the production of interconnecting porous structures. As this is a novel approach with this manufacturing process, the general producibility and reproducibility must first be proven. Therefore, the relevant process parameters with an influence on the open-pored structures are identified. The volume of the individual plastic droplets, the distance between the droplets and the layer thickness are the three decisive influencing factors. With the use of analysis methods, the free spaces created in the structure are described by a uniformly constructed, interconnected pore structure. This means that the pores are interconnected in three dimensions.Reproducibility is evaluated by repeated production and thru the changed conditions during the manufacturing process. In addition, the multiplication and a change of geometry are evaluated in such a way that there is no influence on the pore size. Irregularities when depositing the first layer are caused by unevenness of the building platform. A suitable test arrangement is set up to determine the liquid permeability. A characteristic value is determined to describe the permeability to liquids.
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