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Anti-cracking outer wall mastic

An external wall putty and selected technology, applied in the direction of filling slurry, etc., can solve the problems of easy efflorescence on the surface of the external wall, reducing the protection effect of the external wall paint, and full of cracks on the surface of the external wall. and peeling, excellent anti-aging performance, overall beautiful effect

Inactive Publication Date: 2004-05-19
王红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cement putty will produce cracks after half a year or even less time after construction, so that the surface of the exterior wall will be covered with cracks, which not only affects the appearance of the exterior wall, but also greatly reduces the protective effect of the exterior wall paint. The nature of cement itself is determined by its high compressive strength but low tensile strength.
In addition, cement putty is used, and the surface of the external wall is prone to blooming
Now there are also external wall putty made of polyvinyl acetate emulsion or 107 construction glue, old powder, double fly powder, etc., but the wall surface scraped with this kind of putty is easy to pulverize, bulge, and peel off when it sees water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: batching by following weight:

[0015] Polyacrylate emulsion with rubber elasticity 250kg, rutile titanium dioxide 80kg, Shuangfei powder 150kg, talcum powder 100kg, quartz powder 200kg, white carbon black 20kg, polypropylene fiber 30kg, water 150kg, hydroxyethyl cellulose 2kg, hexametaphosphoric acid Sodium 2kg, sodium pentachlorophenate 1kg, ethylene glycol 15kg.

[0016] Add the hydroxyethyl cellulose, sodium hexametaphosphate, sodium pentachlorophenate, ethylene glycol and water of the above weight into the mixer, mix evenly under high-speed stirring, then add the polyacrylate emulsion with rubber elasticity, and add the mixture to the kneader, At the same time, add titanium dioxide, double fly powder, talcum powder, quartz powder, white carbon black and polypropylene fiber, stir evenly through a kneader, then grind the above mixture through a three-roll mill, and stir it into a uniform paste with a low-speed mixer.

Embodiment 2

[0017] Embodiment 2: batching by following weight:

[0018] Polyacrylate emulsion with rubber elasticity 350kg, rutile titanium dioxide 50kg, Shuangfei powder 100kg, talcum powder 100kg, quartz powder 100kg, zinc oxide 50kg, aramid fiber 50kg, water 170kg, carboxymethyl cellulose 5kg, polymethyl Sodium acrylate 3kg, chlorothalonil 2kg, propylene glycol 20kg.

[0019] Put the carboxymethyl cellulose, sodium polymethacrylate, chlorothalonil, propylene glycol and water of the above weight into the mixer and mix evenly under high-speed stirring, then add the polyacrylate emulsion with rubber elasticity, and put the mixture into the kneader, and at the same time Add titanium dioxide, double fly powder, talcum powder, quartz powder, zinc oxide and aramid fiber, and stir evenly with a kneader, then grind the above mixture with a three-roll mill, and stir with a low-speed mixer to form a uniform paste.

Embodiment 3

[0020] Embodiment 3: batching by following weight:

[0021] Polyacrylate emulsion with rubber elasticity 200kg, rutile titanium dioxide 100kg, Shuangfei powder 120kg, talc powder 150kg, quartz powder 130kg, zinc oxide 40kg, glass fiber 40kg, water 200kg, alkali-soluble acrylic emulsion (after neutralization with ammonia water) 2kg , 2 kg of sodium polymethacrylate, 1 kg of isothiazolone compounds, and 15 kg of ethylene glycol.

[0022] Add the above-mentioned weight of alkali-soluble acrylic emulsion (after neutralization with ammonia water), sodium polymethacrylate, isothiazolone compounds, ethylene glycol and water into the mixer, mix evenly under high-speed stirring, then add the polyacrylate emulsion with rubber elasticity, Put the mixture into the kneader, and at the same time add titanium dioxide, double fly powder, talc powder, quartz powder, zinc oxide and glass fiber, and stir it evenly through the kneader, then grind the above mixture through a three-roll mill, and s...

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Abstract

The anti-cracking outer wall mastic consists of elastic polyacrylate emulsion, zinc oxide or white carbon black, filter, densifier and dispersion stabilizer as well as rutile type titanium white, quartz powder, double-ground powder, talcum powder and water. It has high elasticity, high tensile strnegth, high adhesion force and relatively high unit elongation, and can resist the crack produced in the base layer and permeate moisture to avoid bubble and peeling off. The present invention makes wall beautiful, no cracking and no accumulation of alkali in the surface.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to an exterior wall putty and a preparation method thereof. Background technique [0002] Existing exterior wall putty mostly adopts cement putty, and its main component is 107 building adhesives and white cement. This kind of cement putty will produce cracks after half a year or even less time after construction, so that the surface of the exterior wall will be covered with cracks, which not only affects the appearance of the exterior wall, but also greatly reduces the protective effect of the exterior wall paint. The nature of cement itself is determined by its high compressive strength but low tensile strength. In addition, cement putty is used, and the surface of the external wall is prone to efflorescence. Now there are also external wall putty made of polyvinyl acetate emulsion or 107 construction glue, old powder, double fly powder, etc., but the wall surface sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
Inventor 王红
Owner 王红