Modular aerogel brick fabrication via 3D-printed molds
Modular aerogel brick fabrication via 3D-printed molds
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DOI：
10.1016/j.addma.2021.102059
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发表时间：
2021-06
影响因子：
11
通讯作者：
P. Joo;Yiming Yao;Nicholas Teo;S. Jana
中科院分区：
文献类型：
--
作者：
P. Joo;Yiming Yao;Nicholas Teo;S. Jana
提出了一种用于制造模块化气凝胶/丙烯酸酯砖的3D打印工艺，该模块化气凝胶/丙烯酸酯砖完全可扩展和可定制，用于隔热的潜在应用。结合气凝胶合成的溶胶-凝胶方法使用3D打印工具规避了制造大尺寸承载气凝胶制品的几何限制。在这项研究中，双组分气凝胶砖是由气凝胶和3D打印承重聚合物砖的低导热性制成的。为此，气凝胶是由聚酰亚胺和部分交联的立体光刻丙烯酸酯（SLA）树脂合成的。气凝胶材料由机械强度高的LEGO®-样砖保持，这些砖来自完全交联的SLA树脂和完全固化的环氧树脂。讨论了气凝胶填充砖在接触加热过程中砖表面的瞬态温度分布以及砖的抗弯和抗压性能。
A 3D-printing process is presented for the manufacturing of modular aerogel/acrylate bricks that are fully scalable and customizable for potential applications in thermal insulation. The use of 3D-printing tools in conjunction with a sol-gel method of aerogel synthesis circumvents the geometric limitations of fabrication of large size load bearing aerogel articles. In this study, two-component aerogel bricks are manufactured from the low thermal conductivity of aerogels and 3D-printed load-bearing polymer bricks. For this purpose, aerogels are synthesized from polyimide and partially crosslinked stereolithography acrylate (SLA) resins. The aerogel materials are held by mechanically strong LEGO®-like bricks derived from fully crosslinked SLA resin and fully cured epoxy resin. The transient temperature profiles on brick surfaces due to contact heating and flexural and compressive properties of bricks filled with aerogel materials are discussed.