White water-based alkali-resistant sealing primer and preparation method thereof
A sealing primer, water-based technology, used in biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve problems such as sticking back, magnesite cement boards sticking together, and ineffectiveness. , to achieve the effect of avoiding sticking back, low formula cost and high practicability
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Embodiment 1
[0065] In the present embodiment, the white water-based anti-alkali sealing primer includes, by weight percentage: 300 parts of anti-alkali sealing emulsion; 0.5 part of cellulose ether; 0.5 part of wetting agent; 0.5 part of defoamer; 1 part of thickener; 0.5 parts of bactericide; 10 parts of antifreeze; 0.5 part of film-forming aid; 475 parts of water. The wetting agent is a nonylphenol wetting agent; the model of the titanium dioxide is DuPont R706; the antifreeze is ethylene glycol.
[0066] Production steps: first add water and dispersant to the paint tank, and gradually add antifreeze, titanium dioxide and thickener under the condition of rotating speed of 500r / min, and stir for 10 minutes; then add anti-alkali blocked emulsion, and Stir for 10 minutes at a speed of 400 r / min; finally add a bactericide and a film-forming aid, and keep stirring for 5 minutes at a speed of 400 r / min to prepare the white water-based alkali-resistant sealing primer.
[0067] The white water...
Embodiment 2
[0069] In this embodiment, the white water-based anti-alkali sealing primer, by weight percentage, includes: 500 parts of anti-alkali sealing emulsion; 1 part of cellulose ether; 1 part of wetting agent; 1 part of defoamer; 5 parts of thickener; 1 part of fungicide; 50 parts of antifreeze; 12 parts of film-forming aid; 645 parts of water. The alkali-resistant blocking emulsion is a self-crosslinking acrylic emulsion; the cellulose ether is hydroxyethyl cellulose ether; the wetting agent is a nonylphenol wetting agent; the defoaming agent is a metal soap defoaming agent. foaming agent; the thickener is an alkali-swellable thickener; the bactericide is a kasone-type bactericide; the antifreeze is an alcohol antifreeze; and the water is deionized water.
[0070] Production steps: first add water and dispersant to the paint tank, and gradually add cellulose ether, wetting agent, defoamer, thickener and antifreeze under the condition of rotating speed of 500r / min, and stir for 10 m...
Embodiment 3
[0073] In this embodiment, the white water-based anti-alkali sealing primer, by weight percentage, includes: 400 parts of anti-alkali sealing emulsion; 0.75 parts of cellulose ether; 0.75 parts of wetting agent; 0.75 parts of defoaming agent; 3 parts of thickener; 0.75 parts of bactericide; 30 parts of antifreeze; 6 parts of film-forming aid; 550 parts of water. The alkali-resistant blocking emulsion is a self-crosslinking acrylic emulsion; the cellulose ether is hydroxyethyl cellulose ether; the wetting agent is a nonylphenol wetting agent; the defoaming agent is a metal soap defoaming agent. foaming agent; the thickener is an alkali-swellable thickener; the bactericide is a kasone-type bactericide; the antifreeze is an alcohol antifreeze; and the water is deionized water.
[0074] Production steps: first add water and dispersant to the paint tank, and gradually add cellulose ether, wetting agent, defoamer, thickener and antifreeze under the condition of rotating speed of 500...
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