The advanced thermal management material with high mechanical strength and low thermal conductivity have an extremely important position in thermal insulation. Herein, we successfully prepared a green sustainable and low-cost composite aerogel with attapulgite and gelatin as the main components, and then obtained by chemical crosslinking and freeze-drying. Dopamine was used to functionalize attapulgite to increase interface compatibility between inorganic phase and gelatin molecules. The results show that the as-prepared attapulgite/gelatin composite aerogel have lower bulk density (ρ = 0.036–0.062 g cm⁻³), compression modulus up to 3.92 MPa, lower thermal insulation (λ = 34.28–35.29 mW/m K) and an excellent fire resistance (total heat release rate (THR) to 5.4 J kg⁻¹), which mainly attributed to the improvement of the physical properties of the composite aerogel and the construction of the micro/nano structure by the attapulgite with high aspect ratio and high specific surface area embedded in the gelatin skeleton.

具有高机械强度和低导热率的先进热管理材料在隔热中具有极其重要的地位。在此，我们成功制备了以绿坡缕石和明胶为主要成分的绿色可持续，低成本的复合气凝胶，然后通过化学交联和冷冻干燥制得。多巴胺用于功能化凹凸棒以增加无机相和明胶分子之间的界面相容性。结果表明，所制备的凹凸棒石/明胶复合气凝胶的堆积密度较低（ρ= 0.036–0.062 g cm ^-3），压缩模量高达3.92 MPa，隔热性较低（λ= 34.28–35.29 mW / m K）优异的耐火性（总放热率（THR）至5.4 J kg ^-1），这主要归因于明胶骨架中嵌入的高纵横比和高比表面积的凹凸棒土改善了复合气凝胶的物理性能，并构建了微/纳米结构。