▎ 摘　　要

NOVELTY - Preparation of graphene-modified composite glass fiber involves taking 50-55 wt.% silicon dioxide, 10-15 wt.% boron trioxide, 5-10 wt.% sodium oxide, 10-15 wt.% aluminum oxide, 15-20 wt.% calcium oxide and 0.1-0.5 wt.% multi-walled carbon nanotubes or porous graphite grains, heating at 1370 degrees C, melting at 1440-1460 degrees C, baking at 1200 degrees C, casting, molding, annealing at 500 degrees C, heating at 1050 degrees C, drawing, pretreating, dispersing in water, acetone or dimethylsulfoxide, ultrasonic stirring, soaking for 30-60 minutes, cleaning, drying, dispersing, ultrasonic stirring, and adding glass fiber. USE - Method for preparing graphene-modified composite glass fiber. ADVANTAGE - The method is easy, and suitable for industrial production. DETAILED DESCRIPTION - Preparation of graphene-modified composite glass fiber comprises taking 50-55 wt.% silicon dioxide, 10-15 wt.% boron trioxide, 5-10 wt.% sodium oxide, 10-15 wt.% aluminum oxide, 15-20 wt.% calcium oxide and 0.1-0.5 wt.% multi-walled carbon nanotubes or porous graphite grains, heating at 1370 degrees C, melting at 1440-1460 degrees C, baking at 1200 degrees C, casting, molding, annealing at 500 degrees C, heating at 1050 degrees C, drawing, pretreating, dispersing in water, acetone or dimethylsulfoxide, ultrasonic stirring, soaking for 30-60 minutes, cleaning, drying, dispersing, ultrasonic stirring, adding glass fiber, ultrasonic stirring for 10 minutes, heating at 80-120 degrees C for 15-30 minutes, cleaning, and drying.