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Mechanically robust ZrO 2 foams with 3D reticular architecture prepared from chemical‐modified ZrO 2 powder
Author(s) -
Liu Jingjing,
Ren Bo,
Lu Yuju,
Rong Yedong,
Wang Chao,
Wang Lu,
Yang Jinlong,
Huang Yong
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17120
Subject(s) - porosity , materials science , polyurethane , reticular connective tissue , composite material , grafting , chemical engineering , ceramic , polymer , medicine , pathology , engineering
Abstract Engineering mechanically robust ZrO 2 foams with three‐dimensional (3D) reticular architecture and high porosity is extremely challenging. In current work, we presented an approach for constructing such cellular ceramics via a combined polyurethane foaming and chemical grafting method. Ester functional groups were chemically grafted on the ZrO 2 powder surface to enhance its dispersibility. This approach caused the micron‐sized windows to assemble onto the cell wall of porous framework, contributing to 3D interconnected reticular architecture. The resulting products with such cellular architecture possessed a high porosity level of 89.2% and maintained an ultrahigh compressive strength of 8.5 MPa. Our results open up new opportunities for fabricating high‐performance ZrO 2 foams toward practical applications.