▎ 摘　　要

NOVELTY - A high contact area graphene-doped double-layer composite fuel filter paper comprises graphene, pulp fiber, bentonite, needle-leaved pine wood pulp fiber, terylene fiber, sepiolite fiber, citric acid, ferric oxide, titania, magnesia, silane coupling agent KH560, polyethylene oxide solution, titanate coupling agent DNZ201, isopropyl alcohol, styrene-acrylic emulsion and balance polyacrylate emulsion. USE - High contact area graphene-doped double-layer composite fuel filter paper. ADVANTAGE - The product has improved filtering efficiency, increased glossiness and improved tensile property. DETAILED DESCRIPTION - A high contact area graphene-doped double-layer composite fuel filter paper comprises 2-4 pts. wt. graphene, 10-20 pts. wt. pulp fiber, 1-2 pts. wt. bentonite, 10-20 pts. wt. needle-leaved pine wood pulp fiber, 10-20 pts. wt. terylene fiber, 10-20 pts. wt. sepiolite fiber, 1-2 pts. wt. citric acid, 3-5 pts. wt. ferric oxide, 5-10 pts. wt. titania, 4-8 pts. wt. magnesia, 25-35 pts. wt. silane coupling agent KH560, 15-20 pts. wt. polyethylene oxide solution, 2-4 pts. wt. titanate coupling agent DNZ201, 50-60 pts. wt. isopropyl alcohol, 5-10 pts. wt. styrene-acrylic emulsion and balance polyacrylate emulsion. An INDEPENDENT CLAIM is included for preparation of high contact area graphene-doped double-layer composite fuel filter paper comprising taking graphene, ferric oxide, bentonite, titania, magnesia and 1/2 isopropanol, adding titanate coupling agent DNZ201 and polyethylene oxide solution, stirring for 1-3 hours, drying via rotary evaporation, grinding, adding organic solvent, obtaining mixture, taking wood pulp fiber and needle-leaved pine wood pulp fiber, pulping, beating, adding 1/2 styrene-acrylate emulsion, 1/2 citric acid and 1/2 mixture, pulping, squeezing, drying, obtaining first layer, taking terylene fiber and sepiolite fiber, adding silane coupling agent KH560 and remaining isopropanol, stirring for 10-30 minutes, standing for 5-10 minutes, filtering, drying at 80-120 degrees C, pulping, beating, adding remaining styrene-acrylate emulsion, citric acid and mixture, pulping, obtaining second layer, covering with first layer, adding water, stirring, vacuum dehydration forming, drying, and embossing.