Reaction of aerogel containing ceramic fibre insulation to fire exposure

Abstract

Aerogel containing ceramic fibre insulations represent a newly developed high performance insulation material applied in industrial installations and recently expanding rapidly into the construction industry to reduce the heat transfer through walls and ceilings. As a rather expensive material they are preferentially used in cases where slim layers of insulation are needed mainly in refurbishing of existing buildings especially those under heritage protection. The reaction to elevated temperatures in case of fire is a decisive property for building applications. The present article investigates the reaction to fire of an aerogel containing ceramic fibre insulation already available on the market. This reaction was monitored experimentally by means of temperature sensors at different depth in the material when subjected to the standard ISO fire. The measured temperature evolutions are discussed with respect to radiative heat transfer in an optically thick medium, temperature induced changes in density because of mass loss and the occurrence of endothermic and exothermic reactions detected by thermal analysis and compared with simulation results. Copyright Figure 4. Measured temperature of the furnace and at different depth of the investigated sample as functions of testing time. Each of the full lines represents the average of four thermocouples placed in the same depth, and the vertical bars are the corresponding standard deviations.

Systematic Analysis of Micro-Fiber Thermal Insulations from a Thermal Properties Point of View

“…It has been demonstrated that differential scanning calorimetry is a good opportunity to disclose the thermal behavior and degradation of samples [18,37]. In order to correctly understand and reveal the thermal degradation of the samples, differential scanning calorimetry measurements were performed.…”

“…However, in the calorimetric measurement, our goal was not to determine the temperature difference, but the power difference flowing into the two samples. It was previously presented that calorimetry measurements are suitable for thermal insulation materials [18,37].…”

“…Furthermore, fire retardancy is also a very important aspect. In these last two requirements, fiber-wool insulations perform better than plastic foam [15][16][17][18][19]. Some other parameters such as hygric properties or hydrophobicity also have a significant influence on the selection [20,21].…”

Visualization Analysis and Knowledge Mapping the Research of Aerogels Applied in Buildings

“…The intensity of the emergence of each hotspot is relatively close and the duration is 2 years, indicating that the research on these hot topics was relatively even at this stage. Windows, historical building, nanocomposite, u-value, ambient pressure drying, aerogel blanket, historical building, thermal comfort, building insulation were the main research focuses during 2016-2018 [40][41][42][43][44][45], with emergent intensities of 2.2113, 1.2686, 1.7491, 1.6713, 1.3431, 1.3431, 2.2447, 1.3431, and 1.508, respectively. The highest emergent intensity of historic building and window indicates that these two themes were focused on during this phase [42,46,47].…”

Super‐high fraction of organic montmorillonite filled polyamide 6 composite foam: Morphologies, thermal and mechanical properties

“…Foam‐like aerogels based on inorganic compounds (clay, 21 carbon nanotube, 22 graphene, 23 ceramic nanofiber 24 ) prepared via freeze‐drying or supercritical drying show superior heat resistance and fire‐proof performance. Owning to weak interaction between inorganic fillers, the corresponding aerogels usually show poor mechanical properties.…”