Digital light processing of ceramic components from polysiloxanes
Digital light processing of ceramic components from polysiloxanes
复制标题
DOI：
10.1016/j.jeurceramsoc.2017.07.033
复制
发表时间：
2018-01-01
影响因子：
5.7
通讯作者：
Colombo, Paolo
中科院分区：
文献类型：
--
作者：
Schmidt, Johanna;Colombo, Paolo
使用可光固化聚合物的增材制造是通过制造具有高分辨率和良好表面质量的陶瓷部件来满足具有复杂形态的陶瓷结构的增加的需求的一种方法。我们在这里介绍了一种新的方法来制造SiOC陶瓷结构，通过利用两种不同的预陶瓷聚硅氧烷之间的简单的物理共混物，一个提供光敏丙烯酸酯基团，而另一个高陶瓷产率。实现了不同的混合比，并分别优化了印刷添加剂和固化时间，以通过数字光处理制造高度复杂的聚硅氧烷结构的精确复制品。热解后，观察到均匀的收缩，产生致密的，无孔和无裂纹的SiOC陶瓷。通过调节不同聚硅氧烷之间的比例，可以在宽范围的值内定制诸如陶瓷产率、收缩率、化学组成和热解后的分辨率等参数。
Additive manufacturing using photocurable polymers is one method to answer the increased demand of ceramic structures with complicated morphology by fabricating ceramic parts with high resolution and good surface quality. We introduce here a new method to fabricate SiOC ceramic structures by utilizing a simple physical blend between two different preceramic polysiloxanes, one providing photosensitive acrylate groups while the other one a high ceramic yield. Different blend ratios have been realized and respectively optimized concerning the printing additives and setting times to fabricate exact replications of highly complex polysiloxane structures by Digital Light Processing. After pyrolysis, a uniform, homogenous shrinkage was observed yielding dense, pore-as well as crack-free SiOC ceramics. By adjusting the ratio between the different polysiloxanes, parameters such as the ceramic yield, shrinkage, chemical composition and resolution after pyrolysis could be tailored in a wide range of values.