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首页> 外文会议>ASME international design engineering technical conferences and computers and information in engineering conference 2014 >Effects of injection moulding parameters on dimensional accuracy of POM/MWCNT micro parts
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Effects of injection moulding parameters on dimensional accuracy of POM/MWCNT micro parts

机译：注塑参数对POM / MWCNT微零件尺寸精度的影响

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摘要

Nowadays, the study of polymer nanocomposites is an active area of materials development because nanofillers and in particular Multi-Wall Carbon Nanotubes (MWCNTs) can significantly improve or adjust the properties of the materials into which they were incorporated such as optical, electrical, mechanical and thermal properties. MWCNTs have been adopted in quite a number of applications, but advancements in their properties are needed for spreading their potential. Moreover their behaviour and filling properties in micro injection moulding process have still to be studied. Therefore, in this work, experimental and statistical studies were performed to analyze the parameters effect on replicating capability of micro parts manufactured in POM/MWCNT by micro injection moulding process. Two compounds with different filler fraction (3 and 6 wt%) were tested and processed with different conditions and their operating range have been pointed out and compared with that of pristine POM (PolyOxyMethilene). The results show that the filler content has the effect to change slightly the operative range of the micro injection process parameters and to increase the replicating capability. The most effective parameters on replicating capability of micro ribs, evaluated by a dimensional index, are the mould temperature for the POM/MWCNT 3% and injection velocity for the 6% filler fraction.
机译：如今，聚合物纳米复合材料的研究已成为材料开发的一个活跃领域，因为纳米填料，尤其是多壁碳纳米管（MWCNT）可以显着改善或调整其掺入的材料的性能，例如光学，电学，机械学和机械学。热性能。 MWCNT已经在许多应用中被采用，但是为了扩展其潜力还需要对其性能进行改进。此外，它们在微注射成型过程中的行为和填充性能仍有待研究。因此，在这项工作中，进行了实验和统计研究，以分析参数对通过微注射成型工艺制造的POM / MWCNT中微零件的复制能力的影响。测试了两种具有不同填料含量（3和6 wt％）的化合物，并在不同条件下对其进行了处理，指出了它们的操作范围，并将其与原始POM（PolyOxyMethilene）进行了比较。结果表明，填料含量具有轻微改变微注射工艺参数的操作范围并提高复制能力的作用。通过尺寸指数评估的关于微肋条复制能力的最有效参数是3％的POM / MWCNT的模具温度和6％的填料分数的注射速度。

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