Method for preparing functional carbon fibers

The invention relates to a method for preparing functional carbon fibers. Thermoplastic resin is used as a surface grafting material of the carbon fibers, surface modification is carried out on the carbon fibers by plasma, and the thermoplastic resin is grafted to form a high-performance composite material. The method provided by the invention has the advantages of low investment cost of surface modification equipment of the carbon fibers, low cost, simple operation, strong applicability, good treatment effect, small loss of fiber performance and reliable quality. The modification time is greatly shortened, the amount of chemicals is reduced, the product cost is lowered, the environmental pollution is reduced, and industrial production is applicable. 本发明涉及种功能化碳纤维的制备方法，采用热塑性树脂作为碳纤维的表面接枝材料，将碳纤维通过等离子体表面改性，在接枝热塑性树脂，可以形成高性能的复合材料。本发明的优点在于，碳纤维表面改性所用设备投资费用低，发明成本低、操作简单、适用性强、处理效果好、纤维性能损失小，质量可靠。大量缩短改性时间，降低化学品用量和产品成本，减少环境污染，适用于工业化生产。