MINES ParisTech, PSL Research University, Center for Materials Forming (CEMEF), UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France.
MINES ParisTech, PSL Research University, Center for Materials Forming (CEMEF), UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France.
Carbohydr Polym. 2021 Aug 15;266:118130. doi: 10.1016/j.carbpol.2021.118130. Epub 2021 Apr 28.
To reduce energy losses due to the insufficient thermal insulation is one of the current "hot" topics. Various commercial porous materials are used with the best conductivity around 0.03-0.04 W/(m·K). Aerogels are the only known materials with "intrinsic" thermal superinsulating properties, i.e. with thermal conductivity below that of air in ambient conditions (0.025 W/(m·K)). The classical thermal superinsulating aerogels are based on silica and some synthetic polymers, with conductivity 0.014-0.018 W/(m·K). Aerogels based on natural polymers are new materials created at the beginning of the 21st century. Can bio-aerogels possess thermal superinsulating properties? What are the bottlenecks in the development of bio-aerogels as new high-performance thermal insulationing materials? We try to answer these questions by analyzing thermal conductivity of bio-aerogels reported in literature.
为了减少由于隔热不足而导致的能量损失，这是当前的“热门”话题之一。各种商业多孔材料的最佳导热系数约为 0.03-0.04 W/（m·K）。气凝胶是唯一具有“内在”热超隔热特性的已知材料，即在环境条件下（0.025 W/（m·K））低于空气的导热系数。经典的热超隔热气凝胶基于二氧化硅和一些合成聚合物，其导热系数为 0.014-0.018 W/（m·K）。基于天然聚合物的气凝胶是 21 世纪初开发的新材料。生物气凝胶是否具有热超隔热性能？作为新型高性能隔热材料，生物气凝胶的发展存在哪些瓶颈？我们试图通过分析文献中报道的生物气凝胶的导热系数来回答这些问题。
