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聚乳酸/聚酰胺11共混物的反应性增容及其在增材制造中的应用。

Reactive Compatibilization of PLA/PA11 Blends and Their Application in Additive Manufacturing.

作者信息

Rasselet Damien, Caro-Bretelle Anne-Sophie, Taguet Aurélie, Lopez-Cuesta José-Marie

机构信息

IMT Mines Ales, C2MA, 6 avenue de Clavières, 30319 Alès CEDEX, France.

出版信息

Materials (Basel). 2019 Feb 5;12(3):485. doi: 10.3390/ma12030485.

DOI:10.3390/ma12030485
PMID:30764474
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6384960/
Abstract

The aim of this work was to study the properties of polylatic acid/polyamide 11 (PLA/PA11) blends compatibilized with a multifunctionalized epoxide, Joncryl, and to evaluate the performance of such blends processed by Fused Deposition Modeling (FDM) 3D printing, compared to those produced by injection molding method. Blends containing different Joncryl contents from 0.5 to 3 wt% were prepared by twin-screw extrusion. Evaluation of thermal, rheological and mechanical properties of such blends proved that Joncryl acted as a compatibilizer. Results showed that Joncryl effects on blends properties were improved with increasing its content. A significant reduction of PA11 dispersed phases diameter and an improvement of tensile properties with a ductile behavior were achieved for the highest Joncryl contents. A significant elongation of PA11 dispersed phases was observed into FDM filaments and dog bone shaped specimens produced thereafter. Despite this peculiar morphology, FDM printed samples exhibited only enhanced stiffness but poor reinforcement and elongation at break in comparison with injected ones.

摘要

这项工作的目的是研究用多功能环氧化合物容克瑞（Joncryl）增容的聚乳酸/聚酰胺11（PLA/PA11）共混物的性能，并评估通过熔融沉积成型（FDM）3D打印加工的此类共混物的性能，与注塑成型法生产的共混物进行比较。通过双螺杆挤出制备了含有0.5至3 wt%不同容克瑞含量的共混物。对这些共混物的热性能、流变性能和机械性能的评估证明，容克瑞起到了增容剂的作用。结果表明，随着容克瑞含量的增加，其对共混物性能的影响得到改善。对于最高容克瑞含量的共混物，PA11分散相直径显著减小，拉伸性能得到改善并具有韧性行为。在随后生产的FDM长丝和狗骨形试样中观察到PA11分散相有显著伸长。尽管有这种特殊形态，但与注塑样品相比，FDM打印样品仅表现出刚度增强，而增强效果和断裂伸长率较差。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/689d751d0d91/materials-12-00485-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/689d751d0d91/materials-12-00485-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/7a98cff1cbda/materials-12-00485-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/13b5360ca781/materials-12-00485-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/58e54249af3d/materials-12-00485-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/cf9d97411380/materials-12-00485-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/28abaf599439/materials-12-00485-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/71d0bdde33e6/materials-12-00485-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/67d053c00232/materials-12-00485-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/bd7d347f0af7/materials-12-00485-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbf0/6384960/689d751d0d91/materials-12-00485-g012.jpg

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