Phase change materials (PCMs) can effectively absorb and release energy from the environment during the phase transition process. However, liquid phase leakage and poor energy storage occur easily at the same stage. Considering the good adhesion of polydopamine (PDA) and the high solar absorption properties of PDA and MXene, a new supporting material was prepared in this work by combining melamine foam (MF) and MXene under the action of PDA, which was used to encapsulate polyethylene glycol (PEG) to prepare a composite PCM (CPCM). Then, we experimentally studied the thermal properties of this new material. The results show that the proposed PEG/MPMF CPCM (PEG@MPMF) exhibits good heat storage properties, and the melting enthalpy reaches 186.2 J/g, which is 99.5% of that of pure PEG. The light absorption of PEG@MPMF is improved by the conjugate action of PDA and MXene. Additionally, this CPCM maintains excellent shape stability and reusability after 100 thermal cycles. Therefore, the PEG@MPMF shows great advantages in terms of heat storage and thermal management.

相变材料（PCM）在相变过程中可以有效地吸收和释放环境中的能量。然而，在同一阶段容易发生液相泄漏和不良的能量存储。考虑到聚多巴胺（PDA）的良好粘合性以及PDA和MXene的高太阳吸收特性，在这项工作中，通过在PDA的作用下将三聚氰胺泡沫塑料（MF）和MXene结合使用，制备了一种新的支撑材料，该材料用于封装聚乙烯乙二醇（PEG）以制备复合材料PCM（CPCM）。然后，我们通过实验研究了这种新材料的热性能。结果表明，所提出的PEG / MPMF CPCM（PEG @ MPMF）具有良好的储热性能，熔融焓达到186.2J / g，是纯PEG的99.5％。通过PDA和MXene的共轭作用，改善了PEG @ MPMF的光吸收。此外，该CPCM在100个热循环后仍保持出色的形状稳定性和可重复使用性。因此，PEG @ MPMF在储热和热管理方面显示出巨大的优势。