▎ 摘　　要

NOVELTY - Preparing low energy consumption type weakly acidic water gelled composite filter core material comprises (i) preparing aging gel, (ii) preparing framework matrix aerogel material, (iii) adding deionized water, aqueous solution of graphene oxide, N-isopropylacrylamide, N, N'-bis (acryloyl) cystamine and sodium dodecyl sulfate into three-necked flask, stirring and mixing and reacting, adding matrix liquid, sodium bisulfite and ammonium persulfate into the three-necked flask, maintaining warm and stirring, collecting polymerization reaction liquid and allowing to stand to obtain polymerization gel solution, (iv) adding polymer gel solution, graphene oxide and mixed organic acid in a beaker, stirring to obtain composite gel solution, mixing matrix aerogel material with composite gel solution, placing in mortar, grinding, passing through sieve and collecting sieved slurry, placing sieved slurry in mold, vacuum freeze-drying and collecting dried particles. USE - The method is useful for preparing low energy consumption type weakly acidic water gelled composite filter core material. ADVANTAGE - The method improves the preparation efficiency and reduces the energy consumption. DETAILED DESCRIPTION - Preparing low energy consumption type weakly acidic water gelled composite filter core material comprises (i) adding zirconium oxychloride into absolute ethanol at a mass ratio of 1:15, stirring and mixing to obtain a matrix solution, adding 45-50 pts. wt. matrix solution, 10-15 pts. wt. malic acid, 6-8 pts. wt. tartaric acid, and 25-30 pts. wt. absolute ethanol in a conical flask, stirring and mixing and maintaining the reaction to obtain mixed gel, adding the mixed gel into absolute ethanol in a the mass ratio of 1:2, stirring to mix and maintaining warm and aging to obtain aging gel, (ii) according to the mass ratio of 1:5, adding aging gel solution into absolute ethanol, stirring and mixing and passing nitrogen to the supercritical dryer, heating the temperature when the pressure in the reaction kettle is 0.81-0.85 MPa, maintaining the reaction warm, releasing the fluid in the supercritical dryer to atmospheric pressure, and cooling to room temperature to obtain framework matrix aerogel material, (iii) adding 45-50 pts. wt. deionized water, 10-15 pts. wt. 0.5% aqueous solution of graphene oxide, 1-2 pts. wt. N-isopropylacrylamide, 1-2 pts. wt. N, N'-bis (acryloyl) cystamine and 0.5-1 pts. wt. sodium dodecyl sulfate into a three-necked flask, stirring and mixing and reacting at a constant temperature to obtain matrix liquid, adding 45-50 pts. wt. matrix liquid, 1-2 pts. wt. sodium bisulfite and 0.1-0.2 pts. wt. ammonium persulfate into the three-necked flask, maintaining warm and stirring, collecting the polymerization reaction liquid and allowing to stand to obtain polymerization gel solution, (iv) adding 45-50 pts. wt. polymer gel solution, 0.5-1 pts. wt. graphene oxide and 10-15 pts. wt. mixed organic acid in a beaker, stirring at room temperature for 10-12 hours to obtain composite gel solution, stirring and mixing the matrix aerogel material with the composite gel solution, placing in a mortar, and grinding for 10-15 minutes, passing through the sieve and collecting the sieved slurry, placing the sieved slurry in the mold, vacuum freeze-drying and collecting the dried particles.