Phase change materials (PCMs) possess great potential in thermal energy storage and thermoregulation scopes. However, liquid leaking and high flammability restricts their practical applications seriously. In this work, an innovative and facile chelation-deposition strategy is proposed to prepare flame retardant PCMs (FRPCMs) with 1-octadecane as the phase change substance and bio-based magnesium phytate (PAMg) as the flame retardant shell. In this way, the liquid leaking and flammability issues are addressed simultaneously. We have undertaken a comprehensive study on the structure and properties of the FRPCMs via various tests. It is confirmed that the 1-octadecanol is successfully microencapsulated by the PAMg shell and its crystal structure is not affected. The thermal storage capacity is evaluated with differential scanning calorimetry (DSC) and the latent heat is ranged from 117 to 158 J/g. Limited oxygen index (LOI) and cone calorimeter are performed to assess the flame retardancy of FRPCMs. The LOI value of the epoxy resin/FRPCM composites is increased from 18.5 to 21.6 and the total heat release (THR) is reduced by 39.5% with the addition of FRPCMs particles. The FRPCMs are proved to possess good leaking prevention performance at 90 °C (higher that the melting point of 1-octadecanol). Furthermore, the long term thermal reliability, thermal regulation, leaking prevention and corrosive characteristics of FRPCMs are characterized.

相变材料（PCM）在热能存储和温度调节范围内具有巨大潜力。但是，液体泄漏和高易燃性严重限制了它们的实际应用。在这项工作中，提出了一种创新且简便的螯合-沉积策略，以制备以1-十八烷为相变物质和生物基植酸镁（PAMg）作为阻燃剂壳的阻燃剂PCM（FRPCM）。这样，可以同时解决液体泄漏和易燃性问题。我们通过各种测试对FRPCM的结构和性能进行了全面的研究。证实1-十八烷醇被PAMg壳成功地微囊化并且其晶体结构不受影响。用差示扫描量热法（DSC）评估储热能力，潜热范围为117至158J / g。进行限氧指数（LOI）和锥形量热仪以评估FRPCM的阻燃性。通过添加FRPCMs颗粒，环氧树脂/ FRPCM复合材料的LOI值从18.5增加到21.6，总热释放（THR）降低39.5％。事实证明，FRPCM在90°C（高于1-十八醇的熔点）下具有良好的防泄漏性能。此外，还表征了FRPCM的长期热可靠性，热调节，防泄漏和腐蚀特性。通过添加FRPCMs颗粒，环氧树脂/ FRPCM复合材料的LOI值从18.5增加到21.6，总热释放（THR）降低39.5％。事实证明，FRPCM在90°C（高于1-十八醇的熔点）下具有良好的防泄漏性能。此外，还表征了FRPCM的长期热可靠性，热调节，防泄漏和腐蚀特性。通过添加FRPCMs颗粒，环氧树脂/ FRPCM复合材料的LOI值从18.5增加到21.6，总热释放（THR）降低39.5％。事实证明，FRPCM在90°C（高于1-十八醇的熔点）下具有良好的防泄漏性能。此外，还表征了FRPCM的长期热可靠性，热调节，防泄漏和腐蚀特性。