Effect of cryogenic treatment on the mechanical properties of 3D-printed polylactic acid part

IF 1.8 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2025-01-15 DOI:10.1016/j.cryogenics.2024.104000

Ayushi Gupta , Narendra Kumar , Anish Sachdeva , Gourav Kumar Sharma , Manas Kumar , Ravi Verma

{"title":"Effect of cryogenic treatment on the mechanical properties of 3D-printed polylactic acid part","authors":"Ayushi Gupta , Narendra Kumar , Anish Sachdeva , Gourav Kumar Sharma , Manas Kumar , Ravi Verma","doi":"10.1016/j.cryogenics.2024.104000","DOIUrl":null,"url":null,"abstract":"<div><div>The article investigates the effect of cryogenic treatment on the 3-D printed Polylactic Acid (PLA) specimen. It was found that exposure of PLA specimens to the cryogenic temperature (10 K) using a cryocooler led to a 35 % increase in tensile strength in 5 h, with most improvement occurring within the first hour. The cryogenic treatment enhanced the PLA specimen’s strength and ductility due to increased crystallinity and better molecular alignment. It is likely due to the interaction of the cooling medium (helium) used in the cryocooler with the PLA specimens. Towards this, EDS analysis is performed on cryo-treated PLA specimens. The EDS analysis reveals that nickel and iron compounds were detected on the surface of the cryogenic-treated PLA specimen. These findings highlight that cryogenic treatment significantly improves PLA specimen’s mechanical properties and tensile strength. However, challenges arise, including delamination-layer separation caused by internal stresses, and must be addressed. This work will be helpful for researchers working in polymer 3-D printing.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"145 ","pages":"Article 104000"},"PeriodicalIF":1.8000,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryogenics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0011227524002200","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

The article investigates the effect of cryogenic treatment on the 3-D printed Polylactic Acid (PLA) specimen. It was found that exposure of PLA specimens to the cryogenic temperature (10 K) using a cryocooler led to a 35 % increase in tensile strength in 5 h, with most improvement occurring within the first hour. The cryogenic treatment enhanced the PLA specimen’s strength and ductility due to increased crystallinity and better molecular alignment. It is likely due to the interaction of the cooling medium (helium) used in the cryocooler with the PLA specimens. Towards this, EDS analysis is performed on cryo-treated PLA specimens. The EDS analysis reveals that nickel and iron compounds were detected on the surface of the cryogenic-treated PLA specimen. These findings highlight that cryogenic treatment significantly improves PLA specimen’s mechanical properties and tensile strength. However, challenges arise, including delamination-layer separation caused by internal stresses, and must be addressed. This work will be helpful for researchers working in polymer 3-D printing.

查看原文本刊更多论文

低温处理对3d打印聚乳酸零件力学性能的影响

研究了低温处理对3d打印聚乳酸（PLA）样品的影响。研究发现，将PLA样品暴露在低温（10 K）下，使用制冷机可在5小时内使拉伸强度提高35%，其中大部分改善发生在第一个小时内。低温处理提高了PLA样品的强度和延展性，因为结晶度增加，分子排列更好。这很可能是由于冷冻器中使用的冷却介质（氦）与PLA样品的相互作用。为此，对低温处理的聚乳酸样品进行EDS分析。能谱分析表明，低温处理后的聚乳酸样品表面存在镍和铁化合物。这些结果表明，低温处理显著提高了PLA试样的力学性能和抗拉强度。然而，挑战出现了，包括由内应力引起的分层层分离，必须解决。这项工作将有助于研究聚合物3d打印的研究人员。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Cryogenics 物理-热力学

CiteScore

3.80

自引率

9.50%

发文量

审稿时长

2.1 months

期刊介绍： Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics