Hierarchical 3D Printed Porous Silicones with Porosity Derived from Printed Architecture and Silicone-Shell Microballoons

被引：14

作者：

Loeb, Colin K. ^{[1
]}

Nguyen, Du T. ^{[1
]}

Bryson, Taylor M. ^{[1
]}

Duoss, Eric B. ^{[1
]}

Wilson, Thomas S. ^{[1
]}

Lenhardt, Jeremy M. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA

来源：

ADDITIVE MANUFACTURING | 2022年 / 55卷

关键词：

Hierarchical porosity; Hollow microballoon; Core-shell; Direct ink write; 3D Printing; PHYSICAL-PROPERTIES; FOAMS; FABRICATION;

D O I：

10.1016/j.addma.2022.102837

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A method is reported to prepare siloxane microballoons that can be loaded into a direct ink write siloxane ink for 3D printing. The resulting structure is subjected to a solvent removal and supercritical drying process to provide a final printed siloxane having both macroscopic and microscopic porosity. Core-shell particles are generated by an emulsion template and phase separation process. Intra-strand closed-cell porosities can be achieved between 10 and 40 vol% thus facilitating additional compressive strain before lockup. Short term compression set testing highlights the excellent shape retention properties of these elastomers, which have less than 8% relative compression set under load.

引用

页数：8

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