In this paper, a composite phase change material based on paraffin and carbon foam derived from starch was prepared. The paraffin was encapsulated in the carbon foam, which was prepared by using a foaming and steaming method at different carbonization temperatures. Carbon foams comprised amorphous carbon and were impregnated with paraffin to obtain the paraffin/carbon foam composites (PCCs). When carbonized at 1100°C, the loading percentage of the carbon foam enabled to reach maximum 72.79%. Paraffin encapsulation did not result in any new structure or chemical bonds involved or change in the geometry. The latent heats of the sample were 174.3 J/g at the melting temperature (47.9°C), and 151.4 J/g at the freezing temperature (52.8°C). Thermal conductivity of PCCs reached up to 1.93 times than that of paraffin. The composite phase change material fabrication was cost–effective, environment friendly, chemically stable, and suitable for energy–efficient building applications.

本文制备了一种基于石蜡和淀粉的碳泡沫复合相变材料。将石蜡包封在碳泡沫中，该碳泡沫是通过在不同的碳化温度下使用发泡和蒸煮方法制备的。碳泡沫包含无定形碳，并用石蜡浸渍以获得石蜡/碳泡沫复合材料（PCC）。当在1100℃下碳化时，碳泡沫的负载百分比能够达到最大72.79％。石蜡包封不会导致涉及任何新结构或化学键或几何形状的变化。样品的潜热在熔融温度（47.9℃）下为174.3J / g，在冷冻温度（52.8℃）下为151.4J / g。PCC的热导率是石蜡的热导率的1.93倍。