This study presents the preparation and property characterization of a konjac glucomannan (KGM)/starch based aerogel as a thermal insulation material. Wheat straw powders (a kind of agricultural waste) and starch are used to enhance aerogel physical properties such as mechanical strength and pore size distribution. Aerogel samples were made using environmentally friendly sol–gel and freeze drying methods. Results show that starch addition could strengthen the mechanical strength of aerogel significantly, and wheat straw addition could decrease aerogel pore size due to its special micron-cavity structure, with appropriate gelatin addition as the stabilizer. The aerogel formula was optimized to achieve lowest thermal conductivity and good thermal stability. Within the experimental range, aerogel with the optimized formula had a thermal conductivity 0.04641 Wm⁻¹ K⁻¹, a compression modulus 67.5 kPa and an elasticity 0.27. The results demonstrate the high potential of KGM/starch based aerogels enhanced with wheat straw and starch for application in thermal insulation.

这项研究提出了魔芋葡甘露聚糖（KGM）/淀粉基气凝胶作为隔热材料的制备和性能表征。小麦秸秆粉（一种农业废料）和淀粉用于增强气凝胶的物理性能，例如机械强度和孔径分布。气凝胶样品是使用环保的溶胶-凝胶法和冷冻干燥法制成的。结果表明，淀粉的加入可显着增强气凝胶的机械强度，麦秸的加入由于其特殊的微腔结构而可以减小气凝胶的孔径，并添加适当的明胶作为稳定剂。对气凝胶配方进行了优化，以实现最低的导热率和良好的热稳定性。在实验范围内^-1  K ^-1，压缩模量67.5 kPa，弹性0.27。结果表明，用麦草和淀粉增强的基于KGM /淀粉的气凝胶具有很高的潜力，可用于绝热。