Preparation of carbon nanotubes by pyrolysis method and their application in heat dissipation coatings
Thermal management plays an important role in the operation of electronic devices,and the radiation heat transfer can be effectively enhanced by coating the surface of electronic devices.In this study,the carbon nanotubes(s-CNTs)were prepared from biomass as raw materials and applied to heat dissipation coatings to test thermal performance.The experiments showed that the average pore diameter of s-CNTs after grinding was 27.6％smaller than that before grinding,and the tube diameter of s-CNTs was 50-100 nm according to TEM.When the mass fraction of s-CNTs reached 6％,the average emissivity reached 0.9146.When the s-CNT cooling coating is applied from 100℃ to room temperature,the cooling rate is as high as 20℃/min.Therefore,s-CNTs nanocoatings have a good application prospect in the heat dissipation of electronic devices.
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