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Cement waterproofing coating, and preparation method and application thereof

A waterproof coating and cement technology, applied in cement coatings, coatings, etc., can solve the problem of the elongation at break of waterproof coating film not meeting the standard, and achieve the effect of reducing whitening phenomenon, good compactness, and reducing free precipitation

Active Publication Date: 2020-05-08
SHENZHEN ZHUOBAO TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of water-based polymer emulsion in the cement waterproof mortar is too small, and the elongation at break of the waterproof coating film cannot meet the standard

Method used

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  • Cement waterproofing coating, and preparation method and application thereof
  • Cement waterproofing coating, and preparation method and application thereof
  • Cement waterproofing coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment provides a cement waterproof coating, the cement waterproof coating is composed of powder and liquid material, the mass ratio of the powder and liquid material is 1.2:1, the specific composition is as follows:

[0071]

[0072]

[0073] The preparation method of the cement waterproof coating that the present embodiment provides comprises the following steps:

[0074] (1) Mix Portland cement, heavy calcium carbonate, polycarboxylate superplasticizer, calcium formate, tartaric acid and quartz sand at a speed of 300 rpm for 30 minutes according to the formula to obtain powder; , mineral oil defoamer, lauryl alcohol ester, non-associated alkali swelling thickener, nonionic polyurethane thickener and water were mixed and stirred at 1300rpm for 15min to obtain a liquid material;

[0075] (2) Add the powder material to the liquid material, the mass ratio of the powder material and the liquid material is 1.2:1, stir and disperse at a speed of 800rpm for 5m...

Embodiment 2

[0077] This embodiment provides a cement waterproof coating, the cement waterproof coating is composed of powder and liquid material, the mass ratio of the powder and liquid material is 1.22:1, the specific composition is as follows:

[0078]

[0079]

[0080] The preparation method of the cement waterproof coating that the present embodiment provides comprises the following steps:

[0081] (1) Mix Portland cement, heavy calcium carbonate, polycarboxylate superplasticizer, calcium formate, tartaric acid and quartz sand at a speed of 300 rpm for 30 minutes according to the formula to obtain powder; , mineral oil defoamer, lauryl alcohol ester, non-associated alkali swelling thickener, nonionic polyurethane thickener and water were mixed and stirred at 1300rpm for 15min to obtain a liquid material;

[0082] (2) Add the powder material to the liquid material, the mass ratio of the powder material and the liquid material is 1.22:1, stir and disperse at a speed of 800rpm for ...

Embodiment 3

[0084] This embodiment provides a cement waterproof coating, the cement waterproof coating is composed of powder and liquid, the mass ratio of the powder and liquid is 1.25:1, the specific composition is as follows:

[0085]

[0086] The preparation method of the cement waterproof coating that the present embodiment provides comprises the following steps:

[0087] (1) Mix Portland cement, heavy calcium carbonate, polycarboxylate superplasticizer, calcium formate, tartaric acid and quartz sand at a speed of 500 rpm for 20 minutes according to the formula to obtain a powder; , mineral oil defoamer, lauryl alcohol ester, non-associated alkali swelling thickener, nonionic polyurethane thickener and water were mixed and stirred at 2000rpm for 10min to obtain a liquid material;

[0088] (2) Add the powder material to the liquid material, the mass ratio of the powder material and the liquid material is 1.25:1, stir and disperse at a speed of 1000rpm for 10min, stand for 2min to br...

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Abstract

The invention provides a cement waterproofing coating, and a preparation method and an application thereof. The cement waterproofing coating is composed of a powder material and a liquid material, 100wt% of the powder material comprises 50-70 wt% of ash cement, 10-30 wt% of calcium powder, 0.02-0.1 wt% of a water reducing agent, 0.1-0.4 wt% of an early strength agent, 0.1-0.3 wt% of an alkali inhibitor, and the balance of quartz sands; and 100 wt% of the liquid material comprises 75-80 wt% of an emulsion, 0.2-0.4 wt% of a defoaming agent, 0.5-3.0 wt% of a coalescing agent, 0.3-0.6 wt% of a thickening agent, and the balance of water. The cement waterproofing coating enables a coating film to form a compact and non-whitening coating film under low-temperature and high-humidity conditions, and meanwhile, the film formed by the coating is excellent in tensile strength, elongation at break and waterproof performance.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a cement waterproof coating and a preparation method and application thereof. Background technique [0002] Waterproof paint is a two-component waterproof material used for building waterproofing, which is composed of a powder part and a liquid part in a certain proportion. The powder material is composed of high-quality cement fine sand and unique active substances, while the liquid material is composed of high molecular polymer and additives. After the two groups of materials are mixed, they are painted on the cement base surface to achieve waterproof effect. Existing cement-based polymer waterproof coatings are usually applied under low-temperature and high-humidity conditions (temperature ≤ 15°C, humidity ≥ 80% RH), especially indoors such as kitchens, bathrooms, etc., which are relatively closed and the ventilation conditions are not very good. Inside. Due...

Claims

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Application Information

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IPC IPC(8): C09D1/08C09D7/61C09D133/04
CPCC08K2003/265C08K2201/005C09D1/08C09D133/04C09D7/61C08K13/02C08K3/34C08K3/26C08K3/36
Inventor 李学虎高红刚颜杏宇
Owner SHENZHEN ZHUOBAO TECH
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