Optically transparent polyimide aerogels

US10800883B1 · kind B1 · utility

Assignee

• United States of America as represented by the Administrator of NASA · US

Inventors

• Stephanie L. Vivod · Euclid, US
• Mary Ann B. Meador · Strongsville, US
• Andrew P. Shinko · Uniontown, US
• Sadan C. Jana · Cleveland, US
• Coleen Pugh · Akron, US

Key dates

• Filing date: Oct 19, 2017
• Grant date: Oct 13, 2020
• Expiry date: Apr 8, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2379/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Processes and precursors may be used to produce a highly porous, extremely large surface area polyimide aerogel with optical translucency and diminished heat transfer. The resulting material maintains or exceeds structural integrity and low thermal conductivity seen in the high opacity polyimide aerogels of similar porosity and density. The formulations used for fabrication of aerogels may include combinations of fluorinated dianhydride and diamine fractions and non-fluorinated dianhydrides and diamines with various aliphatic and aromatic bridgehead components as precursors to the condensation polymerization of polyimide aerogels with polyamide crosslinks.