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首页> 外文会议>International Conference on Multi-Material Micro Manufacture >Influence of micro injection moulding process parameters on mechanical characteristics of POM and POM/CNT composites
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Influence of micro injection moulding process parameters on mechanical characteristics of POM and POM/CNT composites

机译：微注塑工艺参数对POM和POM / CNT复合材料机械特性的影响

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摘要

Micro injection moulding is one of the most used thermoplastic technology for the manufacturing of miniaturized products, due to the high productivity of the process. Thermoplastic micro manufacturing has reached nowadays an incredible spread: polymeric components are used in several fields, such as biomedical, IT, telecommunication, automotive and aerospace. In recent years, an innovation in polymer area was the addition of fillers on the pure polymer, in order to improve the physical properties and/or to reduce the cost of the composite. The aim of the present work is to carry out a comparison between the mechanical properties of POM base material and POM filled with carbon nanotubes micro injected using different process parameters - melting temperature, injection speed and holding pressure. Uniaxial mechanical tests were performed to obtain the main mechanical properties: yield stress, deformation at break and stress at break. The results, analyzed with Analysis of Variance statistical approach show that the mechanical response of the micro-specimens is mainly affected by the CNT presence, whereas the other factors seems to play only a secondary role. The presence of CNT induces a remarkable increase in the mechanical resistance, but drastically reduces the material ductility.
机译：微注塑成型是用于制造小型化产品的最常用的热塑性技术之一，由于该过程的高生产率。热塑性微型制造已经达到了令人难以置信的涂抹：聚合物组分用于几个领域，例如生物医学，IT，电信，汽车和航空航天。近年来，聚合物区域的创新是纯聚合物上加入填料，以改善物理性质和/或降低复合材料的成本。本作本作作品的目的是在使用不同工艺参数 - 熔化温度，喷射速度和保持压力的情况下，填充有碳纳米管微量微量的POM基材和POM的机械性能之间的比较。进行单轴机械试验以获得主要机械性能：屈服应力，断裂地处的变形和断裂胁迫。结果，随着方差统计方法分析的结果表明，微试的机械响应主要受CNT存在的影响，而其他因素似乎只起二次作用。 CNT的存在诱导机械电阻显着增加，但大大降低了材料延展性。

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