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Failure Analysis of Additively Manufactured Polyester Test Specimens Exposed to Various Liquid Media

机译:对各种液体介质暴露的含有薄层制造的聚酯试验试样的失效分析

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摘要

Additive manufacturing platforms that rely on thermoplastic feedstock materials are now expected to fabricate components intended for deployment in a wide variety of environments, necessitating an understanding of the ability of a material to perform within a broad range of conditions. The work presented here explored the effect of submerging two polyester materials widely used in fused filament fabrication processes in five common liquid media: distilled water, apple cider vinegar, Mexican Coca-cola, 200 proof ethanol and distilled white vinegar for a seven day duration. Mechanical testing, dynamic mechanical analysis and characterization of the fracture surfaces via scanning electron microscopy were used to understand the effect of liquid media exposure. The effects of polymer degradation due to hygroscopic and hydrolytic mechanisms effects were documented. The need for specific procedures for the testing of the environmental effects on the degradation of additively manufactured polymeric components is also highlighted.
机译:依赖于热塑性原料材料的添加剂制造平台现在预计将制造用于在各种环境中进行部署的部件,这需要了解材料在广泛的条件下执行材料的能力。这里提出的工作探讨了五种常见液体介质中广泛应用于熔融长丝制造工艺的两种聚酯材料的作用:蒸馏水,苹果醋,墨西哥可口可乐,200种乙醇和蒸馏白醋,七日持续时间。通过扫描电子显微镜通过扫描电子显微镜进行机械测试,动态力学分析和裂缝表面的表征,了解液体介质曝光的影响。记录了具有吸湿性和水解机制效应引起的聚合物降解的影响。还突出了对对碱化制造聚合物组分的降解进行环境影响的具体方法的需要。

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