Composite phase change material and preparation method thereof

The invention provides a composite phase change material and a preparation method thereof, the composite phase change material comprises myristic acid, expanded graphite and carbon fiber, and the mass part ratio of myristic acid to expanded graphite to carbon fiber is (70-90): 10: (0-25). The myristic acid/expanded graphite/carbon fiber composite phase change material has the characteristics of uniform adsorption effect, good thermal stability and the like, and has wide application prospects in the field of medium and low temperature heat storage. 本申请提供一种复合相变材料及其制备方法，所述复合相变材料包括肉豆蔻酸、膨胀石墨和碳纤维，所述肉豆蔻酸、膨胀石墨和碳纤维的质量份数比为70～90:10:0～25。本申请的肉豆蔻酸/膨胀石墨/碳纤维复合相变材料，具有吸附效果均匀、热稳定性好等特点，在中低温储热领域应用前景广阔。