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- W4382502197 abstract "Polymer-reinforced silica aerogels are thermally insulating materials employed to enhance mechanical properties; however, they exhibit low heat stability and require a complex production process. The main body of this work concerns the synthesis of silicon-containing polyarylacetylene (PSA) resin, which has exceptional thermal properties and is used to strengthen the gel skeleton and significantly improve the heat resistance of the polymer reinforcement phase. The honeycomb-like porous SiO2/PSA aerogels derived from directional freezing were obtained via click reaction, gel aging, freeze-drying, and curing without the requirement for time-consuming solvent replacement. The prepared SiO2/PSA aerogel is low density (∼0.3 g/cm3) and high porosity (∼80%), which provides the material with low levels of thermal conductivity (∼0.06 W/m·K) and excellent thermal insulation performance. When compared to the majority of polymer aerogels and aerogel-like materials, the prepared SiO2/PSA aerogels have high Td5 (∼460 °C) and Yr800 (∼80%) and compressive strength (compression strength > 1.5 MPa). SiO2/PSA composite aerogel has numerous functions in areas where materials must withstand extremely elevated temperatures, such as the aerospace industry." @default.
- W4382502197 created "2023-06-30" @default.
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- W4382502197 date "2023-06-29" @default.
- W4382502197 modified "2023-10-16" @default.
- W4382502197 title "Thermally Insulating SiO<sub>2</sub>/PSA Composite Aerogels with Heat Resistance and Mechanical Properties via the Thiol–Yne Click Reaction" @default.
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- W4382502197 doi "https://doi.org/10.1021/acs.langmuir.3c00989" @default.
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