Ceramic airgel or into a new aerospace materials
The research results of basic research on graphene airgel 5 years, and over 2 years to complete. The first author of the paper, Associate Professor of Civil Engineering, Harbin Institute of Technology Xu Xiang to \”China Science News\” reports, the early basic research completed super-elastic graphene airgel, a negative Poisson\’s ratio, ultra-light, conductive fluid behavior study energy consumption behavior. Accordingly, basic research team negative deformation characteristics of the Poisson\’s ratio of graphene airgel enhanced CVD techniques employed in situ deposition of graphene airgel template ceramic heating method by etching the template, such that the resultingprepared only negative Poisson\’s ratio characteristics is obtained, and the \”double-walled\” substructure hole wall, while achieving a negative thermal expansion properties of the ceramic aerogels, thereby greatly enhancing the ceramic airgel the mechanical and thermal properties and so on. It is understood that, with different polymers and epoxy, a ceramic material is not easy to melt, soften or decompose; compared with other substances such as an organic substance, which is chemically and heat due to ultraviolet radiation is not broken, and has good thermal conductivity. Further, the ceramic is not discharged in extreme deep vacuum in the gas space, with excellent electrical isolation characteristics, even at high temperatures for a long time has a long life, a high quality aerospace materials choice. corresponding author of the paper, Professor, Department of Chemistry, University of California, Los Angeles paragraph insert Feng told the \”China Science News\”, the ceramic airgel provides research ideas for solving the problem of brittle ceramic ultra-light structure, and thermal crystallization problems, greatly promoted the application of ceramic airgel insulation, catalysis, energy, environmental management, aerospace and other fields. Paragraph insert Feng said that the study is only a start, the next team will continue to develop more flexible, able to adapt to higher operating temperatures, has a lower thermal conductivity of the ceramic ultra-light airgel structure, and further promote the ceramic airgel widely used in many fields.