为了实现生物质资源化利用，开发高性能耐腐蚀涂层材料，分别采用水热合成法和高温碳化法，成功制备了碳纳米微粒和洋葱头碳两种微粒。将两种微粒添加到聚酰亚胺材料中，以期开发出高性能抗腐蚀涂层材料。利用电化学工作站，探究了两种微粒对聚酰亚胺涂层抗腐蚀性能的影响规律。结果表明，生物质碳纳米微粒（CNs）和洋葱头碳微粒（OLCs）的添加对聚酰亚胺涂层材料的抗腐蚀性能产生不同的影响。其中，洋葱头碳微粒改性的复合涂层（OLCs/PI）与碳纳米微粒改性的复合涂层（CNs/PI）相比，前者可显著提高聚酰亚胺的抗腐蚀性能。抗腐蚀机理为，碳纳米微粒为亲水性微粒，在浸泡模拟海水溶液中易发生溶解，导致复合材料抗腐蚀性能降低。洋葱头碳为憎水性微粒，在复合涂层中洋葱头碳微粒为腐蚀性介质的渗透提供了额外的曲折路径或作为微容器储存腐蚀介质，从而提高了抗腐蚀性能。因此，制备的复合材料在海水浸泡过程中能够稳定存在，进而提高聚酰亚胺材料的耐腐蚀性能。

To achieve the resource utilization of biomass and develop high-performance corrosion-resistant coating materials, carbon nanoparticles(CNs)and onion-like carbon(OLCs)were successfully prepared using hydrothermal synthesis and high-temperature carbonization methods, respectively. The two particles were added to polyimide materials to develop high-performance corrosion-resistant coatings. The influence of these particles on the corrosion resistance of polyimide coatings was investigated using an electrochemical workstation. The results indicated that the addition of biomass carbon nanoparticles and onion-like carbon particles had different effects on the corrosion resistance of polyimide coatings. The composite coating modified with onion-like carbon particles(OLCs/PI)significantly enhanced the corrosion resistance of polyimide compared to the composite coating modified with carbon nanoparticles(CNs/PI). The anti-corrosion mechanism is attributed to the hydrophilic nature of carbon nanoparticles, which tend to dissolve in simulated seawater, thereby reducing the corrosion resistance of the composites. In contrast, onion-like carbon particles are hydrophobic and provide additional tortuous paths for the penetration of corrosive media or act as micro-containers to store corrosive media, thus improving the corrosion resistance. Consequently, the prepared composites remain stable during seawater immersion, thereby enhancing the corrosion resistance of polyimide materials