▎ 摘　　要

NOVELTY - Preparation of scale inhibitor involves adding 60-70 mL aniline and 50-55 mL absolute ethanol to three-necked flask equipped with reflux condenser and stirrer, stirring at 200-250 rpm, dripping 100-120 mL hydrochloric acid, heating the flask in water bath, refluxing, obtaining reflux liquid, immersing chloropropylated silica gel in polyethyleneimine solution, soaking, filtering, removing filtrate, obtaining porous silica gel, mixing formaldehyde and acetophenone, obtaining mixed dispersion, cooling obtained reflux liquid, adding 80-90 mL mixed dispersion to the reflux liquid, cooling to room temperature, stirring and dispersing for 2-3 hours, obtaining precursor corrosion inhibitor, mixing obtained inhibitor with benzyl chloride, obtaining mixed monomer, adding 200-250 mL mixed monomer to four-necked flask equipped with a stirrer and reflux condenser, heating, stirring at 300-350 rpm, heat-preserving, adding 20-30 g oxidized nanofibers and 10-15 g graphene oxide and reacting. USE - Preparation of scale inhibitor. ADVANTAGE - The method efficiently provides scale inhibitor which improves the adsorption control ability of metal ions in saline-alkali water. DETAILED DESCRIPTION - The chloropropylated silica gel is obtained by adding 100-120 mL 30 %mass sodium silicate solution to a three-necked flask with stirrer, gradually adjusting the pH using hydrochloric acid, stirring at 350-400 rpm for 30-40 minutes, treating in microwave for 3-5 minutes, obtaining nano-aqueous sol, placing obtained sol in an oven, heating, drying, obtaining nano-silica gel, stirring obtained 200-220 g nano-silica gel and 400-450 mL methanesulfonic acid aqueous solution for 20-30 minutes, obtaining activated silica gel, mixing with chloropropyltrimethoxysilane, obtaining reaction material, placing 200-250 g reaction material in 400-420 mL xylene and reacting. The oxidized nanofibers are obtained by placing 40-50 g Pinus massoniana leaves in a mortar for 30-45 minutes, washing broken P.massoniana leaves in the mortar into high-concentration disk mill using 100-150 mL distilled water, beating, obtaining nanofiber slurry, placing obtained slurry in an oven, heating, drying, obtaining nanocellulose, adding 20-25 g nanocellulose to beaker containing 400-450 mL distilled water, sequentially adding 0.8-1 g tetramethylpiperidine and 4-6 g sodium bromide to the beaker, stirring for 20-30 minutes, adding 50-60 mL sodium hypochlorite solution to the beaker, adjusting the pH using sodium hydroxide solution, reacting, terminating the reaction by adding 100-120 mL absolute ethanol to the beaker, stirring for 10-15 minutes, obtaining reaction product, adding 30-35 pts. wt. obtained reaction product, 10-12 pts. wt. gelatin solution, 15-20 pts. wt. solid hydrogen peroxide, 100-120 pts. wt. deionized water and 10-15 pts. wt. tea polyphenols to a high-speed disperser for 13-15 minutes, obtaining mixed glue, centrifuging obtained mixed glue at high speed, removing supernatant liquid, obtaining lower layer of fiber precipitate and washing the fiber precipitate using deionized water for 3-5 times.