磷酸镁水泥高温性能研究进展

Research Progress on High-temperature Performance of Magnesium Phosphate Cement

磷酸镁水泥(MPC)具有良好的高温性能,在钢结构防护、放射性和危险废物固化等领域具有良好的应用前景,在高端设备热防护和飞行器热障涂层等高温场景也具有良好的应用潜力。本文综述了MPC的水化机制及其在高温状态下的物理力学性能和水化产物的演化规律,总结了MPC在钢结构防火以及放射性和危险废物固化等领域的应用基础研究进展和存在的问题,从绝热性能、力学性能和高温体积稳定性三个主要方向给出了进一步改善MPC高温性能的建议,期望能够为促进MPC在高温场景的实际应用提供参考。

Magnesium phosphate cement(MPC)with excellent high-temperature performance has good application prospects not only in steel structure protection,radioactive and hazardous waste solidification fields,but also in high-temperature scenarios such as high-end equipment thermal protection and aircraft thermal barrier coatings.The paper summarizes the hydration mechanism of MPC and its physical and mechanical properties at high temperatures,as well as the evolution law of hydration products.Then the basic research progress and existing problems of the application of MPC in steel structure fire prevention,radioactive and hazardous waste solidification are summarized,and the suggestions for further improving the high-temperature performance of MPC are proposed from three main directions,including insulation performance,mechanical performance,and high-temperature volume stability,so as to provide reference for promoting the practical application of MPC in high-temperature scenarios.