High-performance green binders for ink-jetting advanced additive manufacturing of metallic structures

粘结剂喷射是一种先进的添加剂制造技术，可用于3D打印金属结构。它的工作原理是将粘结剂配方打印到一层金属粉末上，使该层固化并添加**后续层。一旦3D零件成型，就将其放入高温烤箱中烧掉粘结剂并**烧制金属颗粒。Les Industries Sautech Inc.已经开发出一种粘结剂喷射的变体，可以**非常快速地制造3D金属结构(比其竞争对手快500倍)，但它面临着与所使用的粘结剂有关的**问题。具体地说，粘结剂是不可再生的，在烧毁后可能会对环境和最终产品质量产生有害的**影响。与蒙特利尔理工学院合作，Sautech希望测试新的生物来源粘结剂配方，即壳聚糖和醋酸纤维素。**通过这个短期接洽项目，将评估粘结剂对粉末床的渗透性，以及**其干燥性能、由此产生的拉伸强度和热降解性能(导致完整的**烧结方案)。该项目的完成将有助于使加拿大成为先进添加剂**制造领域的领导者，使Sautech能够在这一不断发展的领域创新并保持竞争力。

Binder jetting is an advanced additive manufacturing technique capable of 3D printing metallic structures. It**works by printing a binder formulation onto a bed of metal powder, allowing that layer to solidify and adding a**subsequent layer. Once the 3D part is formed, it is placed in a high-temperature oven to burn off the binder and**sinter the metal particles. Les Industries Sautech Inc. has developed a variant of binder jetting that allows for**the very rapid fabrication of 3D metallic structures (500 times faster than its competitors), but it is faced with**issues pertaining to the binders used. Specifically, the binders are non-renewable, and can have detrimental**effects on the environment and final product quality following burn-off. In collaboration with Polytechnique**Montreal, Sautech wishes to test new, bio-sourced binder formulations, namely chitosan and cellulose acetate.**Through this short-term Engage project, binder penetration into the powder beds will be assessed, along with**its drying properties, resulting tensile strength and thermal degradation properties (leading to a complete**sintering protocol). The completion of this project will help situate Canada as a leader in advanced additive**manufacturing, allowing Sautech to innovate and stay competitive in this evolving field.