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用于制造功能梯度聚醚醚酮部件的材料挤出式3D打印机的设计与改进

Design and Modification of a Material Extrusion 3D Printer to Manufacture Functional Gradient PEEK Components.

作者信息

Ritter Tobias, McNiffe Eric, Higgins Tom, Sam-Daliri Omid, Flanagan Tomas, Walls Michael, Ghabezi Pouyan, Finnegan William, Mitchell Sinéad, Harrison Noel M

机构信息

School of Engineering, University of Galway, Galway, Ireland.

I-Form, the SFI Research Centre for Advanced Manufacturing, Ireland.

出版信息

Polymers (Basel). 2023 Sep 19;15(18):3825. doi: 10.3390/polym15183825.

DOI:10.3390/polym15183825
PMID:37765679
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10538106/
Abstract

In recent years, the creative use of polymers has been expanded as the range of achievable material properties and options for manufacturing and post-processing continually grows. The main goal of this research was to design and develop a fully-functioning material extrusion additive manufacturing device with the capability to produce functionally graded high-temperature thermoplastic PEEK (polyether ether ketone) materials through the manipulation of microstructure during manufacturing. Five different strategies to control the chamber temperature and crystallinity were investigated, and concepts of thermal control were introduced to govern the crystallisation and cooling mechanics during the extrusion process. The interaction of individually deposited beads of material during the printing process was investigated using scanning electron microscopy to observe and quantify the porosity levels and interlayer bonding strength, which affect the quality of the final part. Functional testing of the printed parts was carried out to identify crystallinity, boundary layer adhesion, and mechanical behaviour. Furnace cooling and annealing were found to be the most effective methods, resulting in the highest crystallinity of the part. Finally, a functionally graded material cylindrical part was printed successfully, incorporating both low and high crystalline regions.

摘要

近年来，随着可实现的材料性能范围以及制造和后处理选项的不断增加，聚合物的创造性应用得到了扩展。本研究的主要目标是设计和开发一种功能齐全的材料挤出增材制造设备，该设备能够通过在制造过程中控制微观结构来生产功能梯度高温热塑性聚醚醚酮（PEEK）材料。研究了五种控制腔室温度和结晶度的不同策略，并引入了热控制概念来控制挤出过程中的结晶和冷却机制。使用扫描电子显微镜研究了打印过程中各个沉积材料珠之间的相互作用，以观察和量化孔隙率水平和层间结合强度，这些因素会影响最终部件的质量。对打印部件进行了功能测试，以确定结晶度、边界层附着力和机械性能。发现炉冷和退火是最有效的方法，可使部件的结晶度最高。最后，成功打印出了一个功能梯度材料圆柱形部件，其中包含低结晶区域和高结晶区域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/42d6b2220a35/polymers-15-03825-g016.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/42d6b2220a35/polymers-15-03825-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/c1120894ede4/polymers-15-03825-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/2bbbd121a57c/polymers-15-03825-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/7e153bd37e72/polymers-15-03825-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/04b613e4d252/polymers-15-03825-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/02e357fa820a/polymers-15-03825-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/245d3bb285a5/polymers-15-03825-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/38b5390106cb/polymers-15-03825-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/23f9b06a8b94/polymers-15-03825-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/dab18804bd1f/polymers-15-03825-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/ee3d68da6337/polymers-15-03825-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/33c85757bc09/polymers-15-03825-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/bf358c0528c3/polymers-15-03825-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/a8572ddebf5a/polymers-15-03825-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/5621e85cba4a/polymers-15-03825-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e4c9/10538106/42d6b2220a35/polymers-15-03825-g016.jpg

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