Porous thermally insulating compositions containing hollow spherical nanoparticles

Patent · Tue Aug 11 04:00:00 EDT 2020

OSTI ID:1735127

Dai, Sheng; Zhang, Jinshui; Jiang, Xueguang; Mahurin, Shannon Mark; Sun, Xiaoguang; Luo, Huimin; Qiao, Rui

A method of thermally insulating a surface, the method comprising applying a coating of a thermally insulating composition onto said surface, wherein said thermally insulating composition comprises: (i) hollow spherical nanoparticles having a mean particle size of less than 800 nm in diameter and a particle size distribution in which at least 90% of the hollow spherical nanoparticles have a size within ±20% of said mean particle size, and a first layer of cationic or anionic molecules attached to said surfaces of the hollow spherical nanoparticles; and (ii) a second layer of molecules of opposite charge to the first layer of molecules, wherein said second layer of molecules of opposite charge are ionically associated with said first layer of molecules, wherein the molecules in said second layer have at least eight carbon atoms.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• Assignee: UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN); Virginia Tech Foundation, Inc. (Blacksburg, VA)
• Patent Number(s): 10,738,202
• Application Number: 15/866,630
• OSTI ID: 1735127
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY