▎ 摘　　要

NOVELTY - Preparation of composite glass fiber comprises pretreating glass fiber, weighing graphene quantum dot, dispersing in 0.1-1 mg/mL dispersion solution, ultrasonically stirring, adding graphene quantum dot dispersed solution to glass fiber, ultrasonically stirring, soaking for 30-60 minutes, taking out glass fiber, cleaning, drying, preparing 0.2-0.8 mg/mL graphene dispersing solution, ultrasonically stirring, adding glass fiber, ultrasonically stirring for 10 minutes, transferring into PTFE-lined reaction kettle, reacting at 80-120 degrees C for 15-30 minutes, taking out, cleaning and drying. USE - Method for preparing composite glass fiber. ADVANTAGE - The composite glass fiber has more excellent mechanical strength. The method has easy-to-obtain raw materials, and is easy for industrial production. DETAILED DESCRIPTION - Preparation of composite glass fiber comprises pretreating glass fiber, weighing graphene quantum dot, dispersing in 0.1-1 mg/mL dispersion solution with water, acetone or dimethyl sulfoxide as solvent, ultrasonically stirring, adding graphene quantum dot dispersed solution to glass fiber, ultrasonically stirring, soaking for 30-60 minutes, taking out glass fiber, cleaning, drying, preparing 0.2-0.8 mg/mL graphene dispersing solution with water, acetone or dimethyl sulfoxide as solvent, ultrasonically stirring, adding glass fiber, ultrasonically stirring for 10 minutes, transferring into PTFE-lined reaction kettle, reacting at 80-120 degrees C for 15-30 minutes, taking out, cleaning and drying.