Preparation method of high-strength waterproof and antibacterial ceiling plate

[0033] Preparation of reaction slurry:

[0034] Put castor and cotton in a vacuum drying oven at a mass ratio of 10:1, dry for 4 hours at a vacuum of 150 Pa and a temperature of 50°C to prepare a mixed material, and mix the mixed material with deionized water at a mass ratio of 1 : 10 is put into the reactor, the temperature in the reactor is airtightly raised to 130° C., and the reaction slurry is obtained by standing at a constant temperature for 2h;

[0035] Preparation of reaction emulsion:

[0036] Put the above reaction slurry and sodium hydroxide solution with a mass fraction of 8% into a beaker at a mass ratio of 1:3, place the beaker in a water bath with a water bath temperature of 70°C, and let it stand at a constant temperature for 60 minutes to prepare an alkaline reaction solution , dropwise adding mass fraction of 5% hydrochloric acid to the beaker to adjust the pH value to 6.0, using a stirring device to stir at a speed of 500r / min for 50min to prepare a reactio

[0046] Preparation of reaction slurry:

[0047] Put castor and cotton into a vacuum drying oven at a mass ratio of 10:1, dry for 4.5 hours under the conditions of a vacuum of 175Pa and a temperature of 55°C to prepare a mixed material, and mix the mixed material with deionized water in a mass ratio of Put 1:10 into the reactor, seal the reactor and raise the temperature inside the reactor to 140°C, and let it stand at constant temperature for 2.5 hours to prepare the reaction slurry;

[0048] Preparation of reaction emulsion:

[0049] Put the above reaction slurry and sodium hydroxide solution with a mass fraction of 10% into a beaker at a mass ratio of 1:3, place the beaker in a water bath with a water bath temperature of 75°C, and let it stand at a constant temperature for 70 minutes to prepare an alkaline reaction solution , dropwise adding mass fraction of 7.5% hydrochloric acid to the beaker to adjust the pH value to 6.25, using a stirring device to stir at a speed of 550r

[0059] Preparation of reaction slurry:

[0060] Put castor and cotton in a vacuum drying oven at a mass ratio of 10:1, dry for 5 hours at a vacuum of 200 Pa and a temperature of 60°C to prepare a mixed material, and mix the mixed material with deionized water at a mass ratio of 1 : 10 is put into the reactor, the temperature in the reactor is airtightly raised to 150°C, and the reaction slurry is obtained by standing at a constant temperature for 3h;

[0061] Preparation of reaction emulsion:

[0062] Put the above reaction slurry and sodium hydroxide solution with a mass fraction of 12% into a beaker at a mass ratio of 1:3, place the beaker in a water bath with a water bath temperature of 80°C, and let it stand at a constant temperature for 80 minutes to prepare an alkaline reaction solution , dropwise adding hydrochloric acid with a mass fraction of 10% to the beaker to adjust the pH value to 6.5, using a stirring device to stir at a speed of 600r / min for 60min to prepare a