Carbon nanodot composite material, preparation method thereof and cold-chain logistics monitoring label

The invention relates to the technical field of materials, in particular to a carbon nanodot composite material, a preparation method thereof and a cold-chain logistics monitoring label. The invention provides a carbon nanodot composite material. The carbon nanodot composite material comprises a fiber matrix and carbon nanodots which are loaded on the fiber matrix and are doped with N and P. The carbon nanodots doped with N and P are combined into the fiber matrix, the rigid fiber matrix can effectively inhibit the non-radiative transition rate, and oxygen adsorbed on the surfaces of the carbon nanodots can be desorbed at high temperature, so that the interaction between the carbon nanodots and oxygen is cut off, and heat-enhanced phosphorescence is obtained; the carbon nanodot composite material disclosed by the invention is applied to cold-chain logistics as a cold-chain logistics monitoring label, and has a temperature indication function and an anti-counterfeiting function. 本发明涉及材料技术领域，尤其是涉及一种碳纳米点复合材料及其制备