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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 the problems of magnesite cement boards sticking together, sticking back, and failing to achieve results. , to achieve the effect of low formula cost, avoid sticking back, 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

[0079] In the present embodiment, the white water-based anti-alkali sealing primer, wherein by weight percentage, includes: 100 parts of anti-alkali sealing emulsion; 50 parts of titanium dioxide; 100 parts of kaolin; 50 parts of ground calcium carbonate; 30 parts of antifreeze 1 part; 1 part of thickener; 100 parts of water. The model of titanium dioxide is DuPont R706; the antifreeze is ethylene glycol.

[0080] Production steps: first add water and dispersant to the paint tank, and gradually add antifreeze, titanium dioxide, thickener, kaolin and heavy calcium carbonate under the condition of rotating speed of 500r / min, and stir for 10 minutes; then add Anti-alkali blocking emulsion, and stirring for 15 minutes under the condition of rotating speed of 400r / min; the white water-based anti-alkali blocking primer is prepared.

[0081] The white water-based anti-alkali anti-alkali sealing primer obtained in this embodiment has extremely strong anti-adhesion, anti-alkali, seali...

Embodiment 2

[0083] In this embodiment, the white water-based anti-alkali sealing primer, by weight percentage, includes: 100 parts of anti-alkali sealing emulsion; 1 part of cellulose ether; 1 part of wetting agent; 2 parts of defoamer; 6 parts of thickener; 4 parts of thickener; 200 parts of titanium dioxide; 100 parts of kaolin; 200 parts of ground calcium carbonate; 1 part of fungicide; 30 parts of antifreeze; 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 alkali-swellable thickener; the titanium dioxide is rutile titanium dioxide; the kaolin is calcined kaolin; Class antifreeze; The water is deionized water.

[0084] Production steps: first add water and dispersant to the paint tank, and gradually add cellulose ether, wetting agent, defoamer, thickener, antifreeze, t...

Embodiment 3

[0087] In this embodiment, the white water-based anti-alkali sealing primer, by weight percentage, includes: 200 parts of anti-alkali sealing emulsion; 0.5 part of cellulose ether, 0.5 part of wetting agent; 1 part of defoamer; 3 parts of agent; 2.5 parts of thickener; 175 parts of titanium dioxide; 50 parts of kaolin; 175 parts of heavy calcium carbonate; 0.5 parts of fungicide; 20 parts of antifreeze; 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 alkali-swellable thickener; the titanium dioxide is rutile titanium dioxide; the kaolin is calcined kaolin; Class antifreeze; The water is deionized water.

[0088] Production steps: first add water and dispersant to the paint tank, and gradually add cellulose ether, wetting agent, defoamer, thickener, antifreeze,...

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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, titanium dioxide, kaolin, ground calcium carbonate 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
CPCC09D133/00C08K3/22C08K3/26C08K3/346C08K13/02C08K2003/2241C08K2003/265C09D5/14C09D7/61C09D7/65C08L1/284C08K5/053
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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