Bioinspired Strong Nanocellular Composite Prepared with Magnesium Phosphate Cement and Polyurea Aerogel
A strong nanocellular composite with stiff magnesium phosphate cement (MPC) particles and soft polyurea aerogel (PUA) has been synthesized and characterized. Utilizing the nano-confinement effect, the effective Young's modulus and the compressive strength of the ligaments are 8-10 times higher than those of PUA. Taking advantage of the hierarchical cellular structure of PUA, the low density (0.285 g·cm-3) and high porosity (86.4%) features are preserved. This bioinspired nano-composite design has shown superior composite action, offering both high strength and deformability. The verified analytical model reveals the bioinspired designing rules for MPC/PUA material system.
Y. Li et al., "Bioinspired Strong Nanocellular Composite Prepared with Magnesium Phosphate Cement and Polyurea Aerogel," Materials Letters, vol. 237, pp. 274-277, Elsevier B.V., Feb 2019.
The definitive version is available at https://doi.org/10.1016/j.matlet.2018.11.121
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Cellular; Composite; Magnesium phosphate cement; Nano; Polyurea aerogel
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Elsevier B.V., All rights reserved.
01 Feb 2019