▎ 摘　　要

NOVELTY - Consistent melting composite phase change material comprises phase change material and a thermally conductive material. The phase change material includes a primary phase change material and a secondary phase change material. The primary phase change material is magnesium nitrate hexahydrate, and the content in the phase change material is 60-70 mol.%. The secondary phase change material is lithium nitrate, and the content in the phase change material is 30-40 mol.%, where the thermally conductive material, the content of which is 0-5 wt.% of the sum of the primary phase change material and the auxiliary phase change material, and the content is not 0. USE - Consistent melting composite phase change material used in clean heating. ADVANTAGE - The consistent melting composite phase change material has good compatibility with aluminum and stainless steel 304, and is beneficial to wide application in the field of clean heating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing consistent melting composite phase change material, which involves: (a)weighing magnesium nitrate hexahydrate and lithium nitrate with specific component and content selection of the consistent melting phase-change material;(b) pouring the weighed magnesium nitrate hexahydrate and the lithium nitrate into a container, stirring uniformly;(c)putting a magnetic stirrer, sealing the container;(d) heating the container on a magnetic heating stirrer in a water bath at the set temperature of 90-100degrees Celsius, after the sample is melted;(e)starting magnetic stirring and fully stirring for 0.5-1 hours to obtain a eutectic material;(f) cooling, and solidifying the obtained eutectic material to obtain the consistent melting composite phase change material with the phase change temperature of 75plus minus5degrees Celsius. DESCRIPTION OF DRAWING(S) - The drawing shows a differential scanning calorimetry chart of the consistent melting composite phase change material.