Preparation and Thermal Performances of Heating Coating with Low-Voltage
Heating technology with low-voltage displays some superiorities including high safety and energy saving,which attracting increasing attention in the heavy oil pipeline heating,wind power generation blade anti-icing and indoor heating fields.A series heating coatings working under low-voltage were prepared,and the influences on the heating rate,heating power and maximum heating temperature from carbon materials had been revealed.Moreover,a synergetic effect between the adopted graphene nanosheets(GNS)and carbon fiber(CF)was found.The reduction degree of the GNS acts as the determining factor to the resulting thermal performances,and a lower functional group density of GNS improves thermal properties.However,an excessive low functional group density leads to the agglomeration behavior of GNS,which causing the nonuniform heating temperature.The present of CF upgrades the dispersibility of GNS in the coating as well as the heating rate.After optimizing the ratio of GNS and CF,the heating rate,heating power and maximum heating temperature reach 7.1 ℃·s-1,800 W·m-2 and 124 ℃with 24 V power supply.
Heating coating with low-voltageGraphene nanosheetsCarbon fiberHeating rateHeating power
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