Waterproof gypsum-based caulking paste
A gypsum-based, gypsum technology, applied in the field of building materials, can solve the problems of non-waterproof, affecting construction quality and decorative aesthetics, joint deformation, etc., to improve waterproof performance, good adhesion, and prevent water absorption deformation Effect
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Embodiment 1
[0032] A waterproof gypsum-based caulking paste, in parts by weight, the composition includes 900 parts of gypsum, 11 parts of bamboo fibers with a length of 15mm, 0.3 parts of sodium citrate, 3 parts of cellulose ether, 5 parts of redispersible latex powder, 1 Parts of starch ether, 4 parts of polydimethylsiloxane grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer and 500 parts of water.
[0033] The preparation method of the polydimethylsiloxane-grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer comprises the steps:
[0034] (1) Dissolve alkylphenol polyoxyethylene ether and sodium bicarbonate in water, stir until completely dissolved to obtain bottom liquid A, the mass ratio of alkylphenol polyoxyethylene ether, sodium bicarbonate and water is 4:1: 65;
[0035] (2) Dissolve the alkylphenol polyoxyethylene ether in water, the mass ratio of the alkylphenol polyoxyethylene ether and water to the mass ratio in step (1) is 1.5:1, stir u...
Embodiment 2
[0040]A waterproof gypsum-based caulking paste, in parts by weight, the composition includes 800 parts of gypsum, 10 parts of wood fibers with a length of 10mm, 5 parts of cotton fibers with a length of 10mm, 0.2 parts of sodium polyphosphate, and 2 parts of carboxymethyl Cellulose, 1 part of redispersible latex powder, 0.5 part of starch ether, 3 parts of polydimethylsiloxane-grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer and 400 parts of water.
[0041] The preparation method of the polydimethylsiloxane-grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer comprises the steps:
[0042] (1) Dissolve alkylphenol polyoxyethylene ether and sodium bicarbonate in water, stir until completely dissolved to obtain bottom liquid A, the mass ratio of alkylphenol polyoxyethylene ether, sodium bicarbonate and water is 2:1: 60;
[0043] (2) Dissolve the alkylphenol polyoxyethylene ether with the same quality as in step (1) in the water with the ...
Embodiment 3
[0048] A waterproof gypsum-based caulking paste, in parts by weight, the composition includes 1000 parts of gypsum, 10 parts of bamboo fibers with a length of 20mm, 0.5 parts of sodium citrate, 4 parts of polyacrylamide, 8 parts of redispersible latex powder, and 1.5 parts of Parts of starch ether, 5 parts of polydimethylsiloxane grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer and 800 parts of water.
[0049] The preparation method of the polydimethylsiloxane-grafted styrene-butyl acrylate-silane coupling agent emulsion copolymer comprises the steps:
[0050] (1) Dissolve alkylphenol polyoxyethylene ether and sodium bicarbonate in water, stir until completely dissolved to obtain bottom liquid A, the mass ratio of alkylphenol polyoxyethylene ether, sodium bicarbonate and water is 6:1: 70;
[0051] (2) Dissolve the alkylphenol polyoxyethylene ether in water, the mass ratio of the alkylphenol polyoxyethylene ether and water to the mass ratio in step (1) i...
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