3D打印PLA复合材料的制备及其在包装领域的应用

唐鹿

doi:10.19554/j.cnki.1001-3563.2025.21.006

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包装工程（技术栏目） ›› 2025, Vol. 46 ›› Issue (21) : 52-58. DOI: 10.19554/j.cnki.1001-3563.2025.21.006

先进材料

3D打印PLA复合材料的制备及其在包装领域的应用

唐鹿^*

作者信息 +

Preparation of 3D Printed PLA Composites and Their Application in Packaging Field

TANG Lu^*

Author information +

文章历史 +

摘要

目的以生物基可降解PLA材料为基体,以增韧剂与短切碳纤维为改性填料,制备适用于熔融沉积成型3D打印的PLA复合材料。探究3D打印PLA复合材料在包装领域的应用潜力,以期为生物基可降解包装材料的开发提供新思路。方法采用熔融共混改性的方法制备PLA复合材料。利用扫描电镜分析其界面结合情况;应用熔融沉积成型技术打印拉伸、弯曲、压缩和燃烧试样并进行性能试验。使用3D打印PLA复合材料进行内六角扳手包装盒的打印成型。结果实验表明,当增韧剂与短切碳纤维的添加量分别为3%和4%时,短切碳纤维与PLA基体表现出良好的界面相容性,其拉伸和弯曲性能得到了有效的改善。该PLA复合材料3D打印试样的拉伸强度为（36.0±0.5）MPa,弯曲强度为（62.0±0.6）MPa,压缩强度为（60.7±0.7）MPa。3D打印成型的内六角扳手包装盒表面光洁度好、尺寸精度高。结论 3D打印PLA复合材料具有良好的力学性能和环保特性,有望应用于高端包装领域。

Abstract

The work aims to prepare 3D printed PLA composites with bio-based degradable PLA as the matrix, along with toughening agents and chopped carbon fibers as modifying fillers, so as to explore the potential applications of these composites in the packaging field, and provide new insights for the development of biodegradable bio-based packaging materials. The 3D printed PLA composites were prepared by melt blending modification. Interface bonding was analyzed by scanning electron microscopy. The tensile, bending, compressive and combustion specimens were fabricated via fused deposition modeling technology, and performance tests were conducted. An Allen wrench packaging box was successfully formed using 3D printed PLA composites. Experimental results showed that when the addition amounts of toughening agent and chopped carbon fiber were 3% and 4% respectively, the chopped carbon fibers exhibited good interfacial compatibility with the PLA matrix, the tensile and bending properties were effectively improved. The 3D printed PLA composite specimen has a tensile strength of (36.0±0.5) MPa, a bending strength of (62.0±0.6) MPa, and a compressive strength of (60.7±0.7) MPa. The Allen wrench packaging box demonstrated good surface finish and high dimensional accuracy. It can be concluded that 3D printed PLA composites possess excellent mechanical properties and eco-friendly characteristics, making them promising for high-end packaging applications.

导出引用

唐鹿. 3D打印PLA复合材料的制备及其在包装领域的应用[J]. 包装工程. 2025, 46(21): 52-58 https://doi.org/10.19554/j.cnki.1001-3563.2025.21.006

TANG Lu. Preparation of 3D Printed PLA Composites and Their Application in Packaging Field[J]. Packaging Engineering. 2025, 46(21): 52-58 https://doi.org/10.19554/j.cnki.1001-3563.2025.21.006

中图分类号： TB484.3 TQ327.3

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