▎ 摘　　要

NOVELTY - Preparing graphene-polyether benzimidazole composite involves dispersing 0.12 gram graphite powder in 60 milliliter methanesulfonic acid, sealing system to avoiding contact with air, ultrasonically dispersing mixture in low power ultrasonic apparatus for 2 hours, where ultrasonic solution is added at 3000 revolutions per minute rotating at speed of 90 minutes to remove non-stripped graphite particles, and upper solution is graphene solution. USE - Method for preparing graphene-polyether benzimidazole composite (claimed). ADVANTAGE - The method enables to prepare graphene-polyether benzimidazole composite has improved physical performance. DETAILED DESCRIPTION - Preparing graphene-polyether benzimidazole composite involves dispersing 0.12 gram graphite powder in 60 milliliter methanesulfonic acid, sealing system to avoiding contact with air, ultrasonically dispersing mixture in low power ultrasonic apparatus for 2 hours, where ultrasonic solution is added at 3000 revolutions per minute rotating at speed of 90 minutes to removing non-stripped graphite particles, and upper solution is graphene solution. The methanesulfonic acid/graphene solution is mixed with pure methanesulfonic acid solution in 100 milliliter three-necked flask to obtain total volume of 30 milliliter, and volume ratio of methanesulfonic acid/graphene solution to pure methanesulfonic acid solution is adjusted. The amount of graphene is 0.4 wt.%, added 5 gram phosphorus pentoxide, stirred until dissolved, added 5 millimole 3,3'-diaminobiphenyl, and 5 millimole 4,4'-dibenzoate into system. The reaction is stirred for 4 hours under nitrogen atmosphere. The product is precipitated into ice water, washed with 5% sodium bicarbonate solution for 24 hours and deionized water for 24 hours to obtain product.