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Waterproof and anti-crack outer wall putty powder and preparation method thereof

A technology of exterior wall putty and exterior wall, which is applied in the direction of filling slurry, etc., can solve the problems of not being able to attach to the wall surface normally, poor quality of putty powder, and powdering of the surface layer, and achieve smooth and delicate appearance, strong adhesion, The effect of improving weather resistance

Inactive Publication Date: 2017-08-25
合肥市一片叶装饰工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the construction process, often due to the poor quality of putty powder, it cannot be attached to the wall surface normally, causing the surface layer to pulverize or fall off, peeling and leaving blistering marks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A waterproof and anti-crack exterior wall putty powder, comprising the following raw materials: talc powder 66g, attapulgite clay 15g, heavy calcium carbonate 16g, sodium bentonite 5g, calcium oxide 7g, anhydrous calcium sulfate 6g, polyacrylamide 2g, 1.5g of sodium carboxymethyl cellulose, 3g of fly ash, 0.2g of pure iron powder, 0.6g of water-repellent sodium methyl siliconate. Heavy calcium carbonate is selected from 200-300 mesh calcite fine powder.

[0022] The preparation method of the above-mentioned waterproof and anti-crack exterior wall putty powder comprises the following steps:

[0023] (1) Acidification of attapulgite clay: Take attapulgite clay, add 16wt% hydrochloric acid solution dropwise to pH 3.6, heat to 45°C, stir for 26min, filter and dry the filter cake at 50°C until the water content is less than 5 %, through a 200-300 mesh sieve to obtain acidified attapulgite clay.

[0024] (2) Mix and stir talcum powder, heavy calcium carbonate, sodium benton...

Embodiment 2

[0027] A waterproof and anti-crack exterior wall putty powder, comprising the following raw materials: 70g of talcum powder, 15g of attapulgite clay, 13g of heavy calcium carbonate, 5g of sodium bentonite, 8g of calcium oxide, 6g of anhydrous calcium sulfate, polyacrylamide 3g, 1.2g of sodium carboxymethylcellulose, 3g of fly ash, 0.3g of pure iron powder, and 0.6g of water-repellent polysiloxane powder. Heavy calcium carbonate is selected from 200-300 mesh calcite fine powder.

[0028] The preparation method of the above-mentioned waterproof and anti-crack exterior wall putty powder comprises the following steps:

[0029] (1) Acidification of attapulgite clay: Take attapulgite clay, add 15wt% hydrochloric acid solution dropwise to pH 4.2, heat to 48°C, stir for 22min, filter and dry the filter cake at 53°C until the water content is less than 5 %, through a 200-300 mesh sieve to obtain acidified attapulgite clay.

[0030] (2) Mix and stir talcum powder, heavy calcium carbon...

Embodiment 3

[0033] A waterproof and anti-crack exterior wall putty powder, comprising the following raw materials: 77g talcum powder, 20g attapulgite clay, 16g heavy calcium carbonate, 6g sodium bentonite, 7g calcium oxide, 9g anhydrous calcium sulfate, polyacrylamide 3g, 2.5g of sodium carboxymethyl cellulose, 4g of fly ash, 0.4g of pure iron powder, and 0.7g of water-repellent sodium methyl siliconate. Heavy calcium carbonate is selected from 200-300 mesh calcite fine powder.

[0034] The preparation method of the above-mentioned waterproof and anti-crack exterior wall putty powder comprises the following steps:

[0035] (1) Acidification of attapulgite clay: take attapulgite clay, add 18wt% hydrochloric acid solution dropwise to pH 4.6, heat to 50°C, stir for 20min, filter and dry the filter cake at 60°C until the water content is less than 5 %, through a 200-300 mesh sieve to obtain acidified attapulgite clay.

[0036] (2) Mix and stir talcum powder, heavy calcium carbonate, sodium ...

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Abstract

The invention discloses a waterproof and anti-crack outer wall putty powder and a preparation method thereof. The outer wall putty powder is prepared from, by weight, 60-80 parts of talcum powder, 10-20 parts of attapulgite clay, 10-18 parts of ground calcium carbonate, 2-8 parts of sodium bentonite, 5-10 parts of calcium oxide, 5-10 parts of anhydrous calcium sulfate, 1-5 parts of polyacrylamide, 0.6-3 parts of carboxymethylcellulose sodium, 2-5 parts of pulverized fuel ash, 0.2-0.5 part of pure iron powder and 0.4-0.8 part of a water repellent. The preparation method comprises the steps of attapulgite clay acidification, vibrating screen grinding, co-heat superfine crushing and the like. The putty powder is firm in structure and smooth and delicate in appearance and has good adhesive force with wall, watertightness, corrosion resistance and cracking resistance are achieved, the preparation method is simple and easy to implement, construction is easy and convenient, and blade coating and leveling performances are excellent.

Description

technical field [0001] The invention relates to the field of wall materials, in particular to a waterproof and anti-crack exterior wall putty powder and a preparation method thereof. Background technique [0002] Putty powder is a commonly used building decoration material, the main components are talcum powder and glue, and it is a base material for wall repair and leveling. The putty powder for exterior walls must resist the sun and rain, so it has high gelatinity, high strength, and a slightly lower environmental index. The quality of exterior wall putty powder directly affects the decoration and durability of the paint finish. During the construction process, often due to the poor quality of the putty powder, it cannot be attached to the wall surface normally, causing the surface layer to pulverize or fall off, peel and leave blistering marks. Therefore, need a kind of exterior wall putty powder with good waterproof and anti-crack performance to meet the requirements o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 郭建
Owner 合肥市一片叶装饰工程有限公司
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