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首页> 外文期刊>Journal of Applied Polymer Science >Characterization of the resistance to abrasive chemical agents of test specimens of thermoplastic elastomeric polyurethane composite materials produced by additive manufacturing
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Characterization of the resistance to abrasive chemical agents of test specimens of thermoplastic elastomeric polyurethane composite materials produced by additive manufacturing

机译：添加剂制造生产的热塑性弹性聚氨酯复合材料试验试样的耐磨料化学试剂的表征

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摘要

Currently the development of additive manufacturing and the emerging of new materials allows to manufacturing process obtaining functional models with properties and geometries adapted to each particular case with low production times and costs. Specifically, 3D printing by fused deposition modeling (FDM) that operates with polymers, is one of the most widespread and popular techniques. Among the numerous materials available, the elastomeric polymers, whose base composition is polyurethane, are becoming increasingly important since allow to obtain flexible pieces with good mechanical and chemical resistance. The objective of this work is to study the effect of an abrasive fluid (commercial automotive petrol) on test specimens made of two different elastomeric filaments commonly used in 3D printing, thermoplastic polyurethane and thermoplastic elastomers. To do this, some of the main physical and mechanical properties - hardness, weigh variation and tensile and bending tests - of these materials were analyzed after immersion of the samples in petrol for different periods of time. Specimens with different volume of material inside their structure were designed in order to determine the effect of the volume filling on the mechanical properties and the petrol effect.
机译：目前，添加剂制造的发展和新材料的出现使得制造过程能够以较低的生产时间和成本获得性能和几何形状适合每种特定情况的功能模型。具体而言，使用聚合物进行熔融沉积建模（FDM）的3D打印是最广泛和流行的技术之一。在众多可用材料中，弹性聚合物（其基本成分为聚氨酯）正变得越来越重要，因为它可以获得具有良好机械和化学耐受性的柔性件。这项工作的目的是研究研磨液（商用车用汽油）对3D打印常用的两种不同弹性体长丝（热塑性聚氨酯和热塑性弹性体）制成的试样的影响。为此，将样品浸入汽油中不同时间后，分析了这些材料的一些主要物理和机械性能——硬度、重量变化以及拉伸和弯曲试验。为了确定填充量对机械性能和汽油效应的影响，设计了结构内部材料体积不同的试样。

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