Nebraska-based 3D printing materials developerTethon 3D已发行了一项新的3D打印专利，涵盖了公司的UV树脂材料技术。
U.S. Patent 10,981,326, ‘Three-Dimensional Printed Objects with Optimized Particles for Sintering and Controlled Porosity’, relates to the particle shape properties that enable improved sintering results in parts 3D printed via SLA, DLP, and UV-based jetting processes. The patent also covers certain characteristics of green-state structures, which are unsintered parts that have been produced using UV resins and sinterable additives.
“Particle size is commonly the first consideration in materials formulation for 3D printing,” states Greg Pugh, CTO of Tethon 3D. “However, particle morphology, particle heterogeneity, and distribution – which are covered by the patent – all contribute to printing and sintering success.”
可烧毁的3D打印树脂
When working with conventional UV resins, the post-processing workflow is typically limited to support removal, washing, and part curing. Sintering is really only necessary when producing parts with composite resins, whereby metal or ceramic additives have been infused into a polymer base to formulate a mixture. With these specialist engineering resins, sintering serves to increase part density by consolidating the additives in the mixture, improving the overall strength of the part.
Tethon 3D is a leader in the ceramic resins market space, with a whole host of composite materials available for use with the company’s野牛1000DLP 3D printer. The non-exhaustive list includes石墨岩，玉米岩和mullitefor electronics and high-temperature applications;Bison High Alumina用于耐腐蚀的成分；和Ferrolite Ironfor magnetic metal parts. The company even offers raw resin bases for customers to develop their own 3D printing materials.
Tethon 3D首席执行官Trent Allen补充说：“在金属和陶瓷的印刷和后处理中存在相似之处。”“虽然我们的专业知识是在陶瓷材料中，但我们的研发工作解决了金属添加剂制造业所共有的问题和挑战，而我们的IP组合则反映了这项广泛的工作。”
当专利与材料本身（特别是粒子特征）相关的视线时，IP涵盖了其他制造过程，而不仅仅是3D打印。例如，滑动铸造，成型和压制制造商都以前所有可烧毁的可光化树脂，以减少加工时间。
Tethon 3D执行董事Karen Linder说：“我们在可光化材料中获得的知识都在整个行业发展。它不仅增长了3D，而且还使我们的合作伙伴受益。”
工程树脂的兴起
When SLA 3D printing first came about in the 1980s, the prospect of high-performance resins for industrial engineering applications was still miles away. Since then, with advancements in both 3D printing and materials development technology, high-strength photopolymers with excellent chemical and electrical properties have become commonplace.
Just last month, Polish 3D printer manufacturerZortraxlaunched a new line of engineering resins for use with the company’sInkspire UV LCD 3D printer. TheZortrax树脂艰难范围, available in three colors, offers a set of mechanical properties comparable to those of conventional polymers, without sacrificing 3D printability and low shrinkage.
在其他地方，在荷兰，3D印刷材料专家Liqcreateadded a newultra-rigid ceramic-reinforced composite resin到其光聚合物投资组合。LiqCreate的最新材料被称为Composite-X，旨在是其工程系列中最强的材料，并具有超过9000MPA的令人印象深刻的挠曲模量。
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Featured image shows sinterable ceramic parts 3D printed using Tethon 3D resins. Photo via Tethon 3D.
