Lauric acid (LA)/iron foam composites with graphene nanoplates (GNP) as composite phase change materials (CPCM) were fabricated by melting infiltration. LA was used as a phase change material and iron foams with different pore density (40, 70 and 90 PPI) were used as skeletons. GNP was used as additives to improve thermal conductivity of the CPCM. Fourier transform infrared spectroscopy and X-ray diffraction were used to verify that LA was physically absorbed into iron foam. Scanning electron microscopy was employed to demonstrate that the LA and GNP were well immersed into the iron foam. The thermal properties were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and thermal conductivity meter. Impregnating LA with GNP into the metal foam is a novel way to enhance thermal properties of the CPCM. CPCM1 reached a latent heat of 177.82 kJ/kg in the solidifying process. The results of TGA and differential thermogravimetric analysis confirmed that the CPCM maintains good stability. The thermal conductivity of the CPCM has an obvious enhancement. The bigger pore density leads to higher thermal conductivity. The GNP can improve thermal conductivity effectively. Thermal conductivity of CPCM6 reaches 1.227 W/(m K), which is increased by 10.67 times compared to that of lauric acid.

通过熔渗法制备了以石墨烯纳米板（GNP）为复合相变材料（CPCM）的月桂酸（LA）/泡沫铁复合材料。LA被用作相变材料，具有不同孔隙密度（40、70和90 PPI）的铁泡沫被用作骨架。GNP被用作添加剂，以改善CPCM的导热性。傅里叶变换红外光谱和X射线衍射用于验证LA物理吸收到泡沫铁中。用扫描电子显微镜证明LA和GNP很好地浸入了泡沫铁中。通过差示扫描量热法（DSC），热重分析法（TGA）和热导率仪研究热性能。用GNP将LA浸渍到金属泡沫中是提高CPCM的热性能的一种新颖方法。在固化过程中，CPCM1的潜热达到了177.82 kJ / kg。TGA和差示热重分析的结果证实了CPCM保持良好的稳定性。CPCM的导热率有明显提高。较大的孔密度导致较高的热导率。GNP可以有效地提高导热率。CPCM6的导热系数达到1.227 W /（m K），与月桂酸相比，导热系数提高了10.67倍。