期刊
INORGANIC MATERIALS
卷 53, 期 2, 页码 207-211出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0020168517020133
关键词
triethylammonium dodecahydro-closo-dodecaborate; sodium silicate water glass; supramolecular; structures; thermal deformation resistance; thermo-oxidative stability
资金
- Presidium of the Russian Academy of Sciences through the basic research program [14]
- Scientific Principles of Producing Novel Functional Materials
The [B12H12](2-) anion, a three-dimensional aromatic system with a uniform electron density distribution over its boron skeleton, has been shown to react with sodium silicate water glass (WG) to form a supramolecular structure. The WG/[B12H12](2-) system has both short-range and weaker, long-range contacts, which influences the chemistry of the thermolysis process and, as a consequence, the thermal and thermomechanical properties of the composites. At 60% (Et3NH)(2)[B12H12] in the starting mixture, the reaction products contain similar to 6.6% [B12H11NEt3](-2) , a substituted derivative that has a plasticizing effect in the case of thermomechanical processing. At an optimal ratio of the starting reagents, the thermo-oxidative stability of the [B12H12](2-) anion and the deformation resistance of the WG/[B12H12](2-) system persist up to 600 degrees C.
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