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Sustainable additive manufacturing: predicting binder jettability of water-soluble, biodegradable and recyclable polymers
Polymer International ( IF 3.2 ) Pub Date : 2020-08-28 , DOI: 10.1002/pi.6108
Emily M Wilts 1 , Timothy E Long 1
Affiliation  

Additive manufacturing potentially generates customized polymeric objects with tailored geometry while reducing waste, employing biodegradable polymers and striving to use recyclable polymer feedstocks for a more sustainable future. Binder jetting additive manufacturing (BJ AM) creates 3D objects upon depositing liquid adhesive onto a powder bed, while a roller spreads powder over a build stage to form subsequent layers. Many factors affect jettability and printability including printhead design, binder material, binder solvent and powder characteristics. Material design for higher strength BJ AM parts using metals, ceramics or polymers exploits binders or particles that transform into thermosets or permanently shaped matrices through thermal or UV curing and sintering. While many BJ AM examples utilize biodegradable, water-soluble and recyclable polymers for biomedical and industrial applications, a wider array of opportunities exist to degrade, dissolve and reuse printed materials. Systematically shifting to these polymers will facilitate reuse and recycling of both binders and powders, but more studies to improve part strength are required. This review describes an overview of polymer jettability and a perspective into opportunities currently underutilized in transitioning BJ AM into a more sustainable AM platform. © 2020 Society of Industrial Chemistry

中文翻译:

可持续增材制造:预测水溶性、可生物降解和可回收聚合物的粘合剂喷射性

增材制造可能会产生具有定制几何形状的定制聚合物物体,同时减少浪费,采用可生物降解的聚合物,并努力使用可回收的聚合物原料来实现更可持续的未来。粘合剂喷射增材制造 (BJ AM) 通过将液体粘合剂沉积到粉末床上来创建 3D 对象,而滚轮将粉末散布在构建阶段以形成后续层。许多因素会影响可喷射性和可印刷性,包括打印头设计、粘合剂材料、粘合剂溶剂和粉末特性。使用金属、陶瓷或聚合物的更高强度 BJ AM 部件的材料设计利用粘合剂或颗粒,通过热或紫外线固化和烧结转化为热固性或永久成型的基质。虽然许多 BJ AM 示例使用可生物降解的 用于生物医学和工业应用的水溶性和可回收聚合物,存在更多降解、溶解和再利用印刷材料的机会。系统地转向这些聚合物将促进粘合剂和粉末的再利用和回收,但需要更多的研究来提高部件强度。这篇综述描述了聚合物可喷射性的概述,以及目前在将 BJ AM 转变为更可持续的 AM 平台方面未充分利用的机会的观点。© 2020 工业化学学会 这篇综述描述了聚合物可喷射性的概述,以及目前在将 BJ AM 转变为更可持续的 AM 平台方面未充分利用的机会的观点。© 2020 工业化学学会 这篇综述描述了聚合物可喷射性的概述,以及目前在将 BJ AM 转变为更可持续的 AM 平台方面未充分利用的机会的观点。© 2020 工业化学学会
更新日期:2020-08-28
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