Preparation method of dry water material based on silica gel and application of dry water material as fire extinguishing agent

[0028] (1) Mix and stir deionized water and water glass (2.8 mold, mass fraction 34%) by volume ratio 3:1;

[0029] (2) Pour the mixed solution into a chromatographic column equipped with a styrene-based strongly acidic cation exchange resin model 001*7 (732), place the beaker on the lower end of the chromatographic column, and the solution in the beaker That is solution A, pH is 3;

[0030] (3) In solution A, add an appropriate amount of mixed solution of water and water glass (3.2 mold, mass fraction 34%) with a volume ratio of 3:1, adjust the pH of solution A to keep it at about 6, and obtain solution B ;

[0031] (4) Weigh 100g of solution B and 9g of Degussa R812S hydrophobic nano-silica with a particle size of 7nm, mix the two in a high-speed stirrer, set the speed at 3000r / min, and stir for 8min; after the stirring stops , standing still for 30 minutes, that is, a dry water material based on silica gel is obtained, wherein the time interval from obtaining solution B t...

[0037] (1) Mix and stir deionized water and water glass (3.0 mold, mass fraction 34%) by volume ratio 4:1;

[0038] (2) Pour the mixed solution into a chromatographic column equipped with a styrene-based strongly acidic cation exchange resin model 001*7 (732), place the beaker on the lower end of the chromatographic column, and the solution in the beaker That is solution A, pH is 3;

[0039] (3) In solution A, add an appropriate amount of mixed solution of water and water glass (3.2 mold, mass fraction 34%) with a volume ratio of 3:1, adjust the pH of solution A to keep it at about 6, and obtain solution B ;

[0040] (4) Weigh 100g of solution B and 10g of Degussa R812S hydrophobic nano-silica with a particle size of 7nm with an electronic analytical balance, mix the two in a high-speed stirrer, set the speed at 5000r / min, and stir for 6min , after the stirring was stopped, after standing still for 30 minutes, the dry water material based on silica gel was obtained, wherein ...

[0045] (1) Mix and stir deionized water and water glass (3.2 mold, mass fraction 34%) by volume ratio 5:1;

[0046](2) Pour the mixed solution into a chromatographic column equipped with a styrene-based strongly acidic cation exchange resin model 001*7 (732), place the beaker on the lower end of the chromatographic column, and the solution in the beaker That is solution A, pH is 3;

[0047] (3) In solution A, add an appropriate amount of mixed solution of water and water glass (3.2 mold, mass fraction 34%) with a volume ratio of 3:1, adjust the pH of solution A to keep it at about 6, and obtain solution B ;

[0048] (4) Weigh 100g of solution B and 11g of Degussa R812S hydrophobic nano-silica with a particle size of 7nm with an electronic analytical balance, mix the two in a high-speed stirrer, set the speed at 7000r / min, and stir for 4min ; After the stirring was stopped, after standing for 30 minutes, the dry water material based on the silica gel was obtained, wherein the...