4.8 Article

Synergistic Fire Resistance of Nanobrick Wall Coated 3D Printed Photopolymer Lattices

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 15, 期 12, 页码 16046-16054

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.3c0017716046

关键词

layer-by-layer assembly; flame retardant; stereolithography; vat photopolymerization; lattice structure; heat shielding

向作者/读者索取更多资源

Photopolymer additive manufacturing has gained widespread interest for its ability to fabricate complex geometries. However, the flammability of photopolymer materials and lattice structures in 3D printing hinder their wider use. By coating 3D printed parts with a water-based nanobrick wall coating, their fire resistance can be significantly improved, especially for lattice structures.
Photopolymer additive manufacturing has become the subject of widespread interest in recent years due to its capacity to enable fabrication of difficult geometries that are impossible to build with traditional manufacturing methods. The flammability of photopolymer resin materials and the lattice structures enabled by 3D printing is a barrier to widespread adoption that has not yet been adequately addressed. Here, a water-based nanobrick wall coating is deposited on 3D printed parts with simple (i.e., dense solid) or complex (i.e., lattice) geometries. When subject to flammability testing, the printed parts exhibit no melt dripping and a propensity toward failure at the print layer interfaces. Moving from a simple solid geometry to a latticed geometry leads to reduced time to failure during flammability testing. For nonlatticed parts, the coating provides negligible improvement in fire resistance, but coating of the latticed structures significantly increases time to failure by up to approximate to 340% compared to the uncoated lattice. The synergistic effect of coating and latticing is attributed to the lattice structures' increased surface area to volume ratio, allowing for an increased coating:photopolymer ratio and the ability of the lattice to better accommodate thermal expansion strains. Overall, nanobrick wall coated lattices can serve as metamaterials to increase applications of polymer additive manufacturing in extreme environments.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据