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Effects of auxiliary heat on the interlayer bonds and mechanical performance of polylactide manufactured through fused deposition modeling

文献类型：期刊论文

作者Yu, Ning1; Sun, Xiaoyong1; Wang, Zhi2; Zhang, Daijun1,2; Li, Jing1,3
刊名POLYMER TESTING
出版日期2021-12-01
卷号104页码:7
关键词Semi-crystalline polymer Polylactide (PLA) Fused deposition modelling (FDM)
ISSN号0142-9418
DOI10.1016/j.polymertesting.2021.107390
通讯作者Li, Jing(jingli@cigit.ac.cn)
英文摘要The inherent interfacial bonding formation of layers determines the quality of complex 3D parts fabricated using fused deposition modeling (FDM). The inferior and anisotropic mechanical properties of FDM parts prevent their industrial application. This research is aimed at enhancing the mechanical properties and reducing the mechanical anisotropy of FDM parts through an innovative auxiliary heating treatment. Polylactide (PLA), which is a distinct semicrystalline polymer commonly used in 3D printing, was selected to examine the enhancement of mechanical properties by implementing auxiliary heating treatment. When the auxiliary heating treatment is applied, the tensile strength of the FDM-printed PLA part increases from 38.4 MPa to 63.6 MPa, and the degree of mechanical anisotropy decreases from 0.51 to 0.22. The auxiliary heating treatment yields superior mechanical properties compared to those attained through post-thermal annealing. Auxiliary heating represents a kind of "in-situ" annealing strategy during FDM printing. Moreover, the auxiliary heating temperature is similar to the cold crystallization temperature (Tcc) of PLA and is the optimal processing condition to obtain superior mechanical properties. As indicated by the SEM and DSC methods, the interfacial bonding of adjacent strands and crystallinity considerably influence the mechanical properties of FDM-printed PLA parts. Therefore, the auxiliary heating approach has the potential to be applied in the fabrication of large FDM parts.
资助项目Youth Innovation Promotion Association of the Chinese Academy of Sciences, China ; Venture & Innovation Support Program for Chongqing Overseas Returnees, China
WOS研究方向Materials Science ; Polymer Science
语种英语
WOS记录号WOS:000724135000010
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.138/handle/2HOD01W0/14719]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Li, Jing
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Chongqing Key Lab Addit Mfg Technol & Syst, CIGIT, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Ning,Sun, Xiaoyong,Wang, Zhi,et al. Effects of auxiliary heat on the interlayer bonds and mechanical performance of polylactide manufactured through fused deposition modeling[J]. POLYMER TESTING,2021,104:7.
APA Yu, Ning,Sun, Xiaoyong,Wang, Zhi,Zhang, Daijun,&Li, Jing.(2021).Effects of auxiliary heat on the interlayer bonds and mechanical performance of polylactide manufactured through fused deposition modeling.POLYMER TESTING,104,7.
MLA Yu, Ning,et al."Effects of auxiliary heat on the interlayer bonds and mechanical performance of polylactide manufactured through fused deposition modeling".POLYMER TESTING 104(2021):7.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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