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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

Inactive Publication Date: 2016-04-20
ZHUO DA NEW MATERIAL TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of alkali-resistant primers on the market, but when most alkali-resistant primers are applied to magnesite material plates, they will cause sticking back when they are closed, cured and stacked, so that the magnesite cement plates are bonded One piece, less than ideal effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a white water-based alkali-resistant sealing primer and a preparation method thereof. The sealing primer and the preparation method have the beneficial effects that after-tack can not be caused when boards made from magnesite materials are stacked after being brushed with the white water-based alkali-resistant sealing primer by adding cellulose ether, a thickening agent, a film-forming additive and other substances to alkali-resistant sealing emulsion and regulating the ratio; the white water-based alkali-resistant sealing primer is low in formula cost, has very strong after-tack resistance, alkali resistance, sealability and freeze-thaw stability, can achieve the waterproof and alkali resistant effects and avoids the problem of after-tack in the production processes of the boards made from magnesite materials; the preparation method of the white water-based alkali-resistant sealing primer is simple, is easy to implement and has very high practicability.

Description

technical field [0001] The invention relates to the field of making magnesite cement boards, in particular to a white water-based alkali-resistant sealing primer applied to magnesite cement boards and a manufacturing method thereof. Background technique [0002] The magnesite cement board is made of lightly calcined powder obtained by calcining magnesite ore or ash powder (mainly composed of MgO) obtained by calcining dolomite at low temperature as the cement, and water-soluble magnesium salts such as magnesium chloride hexahydrate (MgCL2 6H2O) are added, Made by adding water. Generally, a layer of anti-alkali sealing primer is required on the outer surface of the magnesite cement board. The anti-alkali sealing primer is used for alkali resistance and sealing, and it has a good effect on the alkali-resistant sealing of the magnesite cement board. At present, there are many kinds of anti-alkali primers on the market, but when most anti-alkali primers are applied to magnesite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12C09D5/14
CPCC09D133/00C09D5/14C09D7/63C09D7/65
Inventor 杨卓舒邝清林郭立斌侯世军孙凯
Owner ZHUO DA NEW MATERIAL TECH GRP
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