Thermal protection of adjacent equipment such as chemical storage tanks is very important when a fire accident occurs. In this paper, a new intumescent insulation emergency material, potassium polyacrylate & organically modified hectorite & intumescent flame retardant (PPHI), was prepared successfully. The material was characterized by Fourier Transform Infra-Red (FTIR) and X-ray photoelectron spectroscopy(XPS). Thermal insulation performance and thermal stability of the material were studied by cone calorimeter, fire resistance test, scanning electron microscope and energy dispersive spectroscopy (SEM/EDS), and thermogravimetric analysis (TGA), respectively. The results showed that thermal insulation performance of PPHI was the best when the addition content of intumescent flame retardant (IFR) reached 0.54 wt%. The morphology and structures by SEM gave positive evidence that char layers formed from the PPHI composites were improved greatly due to the addition of intumescent flame retardant. Finally, a possible thermal insulation mechanism of PPHI was presented.

发生火灾事故时，相邻设备（如化学品储罐）的热保护非常重要。本文成功制备了一种新型膨胀绝缘应急材料聚丙烯酸钾有机改性锂蒙脱石膨胀阻燃剂（PPHI）。该材料通过傅里叶变换红外（FTIR）和X射线光电子能谱（XPS）进行表征。分别采用锥形量热仪、耐火试验、扫描电镜和能谱仪(SEM/EDS)、热重分析仪(TGA)研究了材料的隔热性能和热稳定性。结果表明，当膨胀型阻燃剂（IFR）的添加量达到0.54 wt%时，PPHI的保温性能最好。SEM 的形态和结构给出了积极的证据，表明由于添加膨胀型阻燃剂，PPHI 复合材料形成的炭层得到了极大的改善。最后，提出了一种可能的PPHI绝热机理。