目的 探寻合适的纳米碳材料取代传统上光机干燥热源，使之更节能，干燥效果更优化。研究不同制备条件对该材料发热板固化和导电性的影响及其电热规律，为上光机干燥源的关键技术提供依据。方法 采用丝网印刷技术制作纳米碳材料发热板，通过分析不同碳基材料发热板的物理性能以选择合适的材料，并进一步研究其在含碳量比、烧制温度、涂层厚度下的导电性能，以及进行通电试验研究其电热性能。结果 直径为150~200 nm纳米碳纤维更适用于本文制备方法，纯净水作为溶剂调制效果良好且获取方便。纳米碳纤维发热板导电性随烧结温度升高而降低，随厚度、含碳量增加而增强。发热板电阻越高、通电时间越长、电流越大，其温升越大、产生热量越高。结论 纳米碳纤维导电性和热效率高、绿色环保，适用于制作上光机干燥设备的干燥源，以提高干燥效率、降低能耗。

The work aims to explore suitable carbon nanomaterials to replace the drying source of the traditional varnishing machine, making it more energy efficient and optimizing the drying effect and to study the effect of different preparation conditions on the curing and electrical conductivity of the heating plate of this material, and the electrical heating law to provide a basis for the key technologies of the varnishing machine drying source. The heating plate of carbon nanomaterials was prepared by screen-printing technology, and the suitable material was selected by analyzing the physical properties of different carbon-based material heating plates. At the same time, the conductivity of the material under the conditions of carbon content ratio, sintering temperature, and coating thickness was further studied, and the electrification experiment was conducted to study the electrical heating performance. The carbon nanofibers with a diameter of 150 ~ 200 nm were more suitable for the preparation method. The purified water had a good modulation effect as a solvent and was convenient to obtain. The conductivity of the heating plate of carbon nanofibers decreased with the increase of sintering temperature and increased with the increase of thickness and carbon content. As the resistance of the heating plate increased, the electrifying time prolonged, and the current rose, the temperature rise became large and the heat produced was more. Carbon nanofibers are suitable for making the drying source of varnishing machine drying equipment due to the high conductivity, high thermal efficiency, and environmental protection to improve drying efficiency and reduce energy consumption.