Three-dimensional printing of metallic structures through advanced fused deposition modeling (FDM) of metallic fillers-reinforced polymer granules

通过金属填料增强聚合物颗粒的先进熔融沉积建模 (FDM) 来三维打印金属结构

• 批准号: 514637-2017
• 负责人: Therriault, Daniel
• 金额: $ 1.82万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639482
• 关键词: Three; dimensional; printing; metallic; structures

Metallic structures fabricated by 3D printing may find widespread applications in medical, microwave andMEMS fields. Commonly-used metal 3D printing techniques such as selective laser sintering is limited by theirhigh processing temperatures, high cost and relatively slow processing time. The popular fused depositionmodeling (FDM) technique, which mainly utilizes thermoplastics as feedstock materials, is also of greatinterest to be adapted for metals. Dyze Design, a company located in Montreal that is actively working in thearea of fabricating high speed, economized accessories for FDM 3D printers has expressed its great interest forcollaboration with LM2 for the development of new materials compatible with the FDM technique. During asix-month project, a postdoctoral fellow (PDF) will work in close collaboration with the company toinvestigate the possibility of adapting metallic micro-particles to the FDM technique for the fabrication ofhighly dense metallic structures in a fast and low-cost process. The specific objectives will be to (1) fabricategranules of various metallic particles mixed with a polymer binder using the solvent-cast printing methodwhich LM2 has a lot of experience, (2) test the compatibility of the developed materials with a FDM print headdesigned by the company, (3) compare performance of the different mixtures in terms of their rheologicalbehavior, fillers concentrations, and mechanical properties (e.g., tension) of the final sintered part, and (4)provide utilization guidelines to the industrial partner and test the materials at the industrial scale. Duringbi-monthly meetings between the company and the LM2, the progress of the project will be discussed. Theoutcomes of this project will certainly contribute to the development of a new product by Dyze Design and helpthe company to enter the market of metallic 3D printing. This project will also help the two collaborators todefine more innovative research projects in the future.

3D打印制造的金属结构在医疗、微波、MEMS等领域具有广泛的应用前景。常用的金属3D打印技术，如选择性激光烧结，存在加工温度高、成本高、加工时间相对较慢等问题。目前流行的熔融沉积模拟技术主要以热塑性塑料为原料，适用于金属材料也很有兴趣。位于蒙特利尔的Dyze Design公司积极致力于制造高速、经济的FDM3D打印机配件，该公司表示非常有兴趣与LM2合作开发与FDM卡技术兼容的新材料。在一个为期六个月的项目中，一名博士后研究员(PDF)将与该公司密切合作，研究将金属微粒子应用于fdm技术的可能性，以快速且低成本地制造高密度金属结构。具体目标将是(1)使用LM2具有丰富经验的溶剂-铸造印刷方法来制造各种金属颗粒与聚合物粘结剂的混合颗粒，(2)测试开发的材料与该公司设计的FDM打印头的兼容性，(3)比较不同混合物的流变学性能、填料浓度以及最终烧结部件的机械性能(例如，拉伸)，以及(4)为工业合作伙伴提供使用指南，并在工业规模上测试材料。在公司和LM2之间每两个月举行一次会议期间，将讨论项目的进展情况。该项目的成果将有助于戴兹设计的新产品的开发，并帮助该公司进入金属3D打印市场。该项目还将帮助两位合作者在未来定义更多创新的研究项目。