Ultraviolet-Assisted Direct Ink Write to Additively Manufacture All-Aromatic Polyimides

Daniel A. Rau, Jana Herzberger, Timothy Edward Long, Christopher B. Williams*

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

All-aromatic polyimides have degradation temperatures above 500 °C, excellent mechanical strength, and chemical resistance, and are thus ideal polymers for high-temperature applications. However, their all-aromatic structure impedes additive manufacturing (AM) because of the lack of melt processability and insolubility in organic solvents. Recently, our group demonstrated the design of UV-curable polyamic acids (PAA), the precursor of polyimides, to enable their processing using vat photopolymerization AM. This work leverages our previous synthetic strategy and combines it with the high solution viscosity of nonisolated PAA to yield suitable UV-curable inks for UV-assisted direct ink write (UV-DIW). UV-DIW enabled the design of complex three-dimensional structures comprising of thin features, such as truss structures. Dynamic mechanical analysis of printed and imidized specimens confirmed the thermomechanical properties typical of all-aromatic polyimides, showing a storage modulus above 1 GPa up to 400 °C. Processing polyimide precursors via DIW presents opportunity for multimaterial printing of multifunctional components, such as three-dimensional integrated electronics.

本文言語English
ページ(範囲)34828-34833
ページ数6
ジャーナルACS Applied Materials and Interfaces
10
41
DOI
出版ステータスPublished - 2018 10 17
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)

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