Exposed waterproof coating with early rain resistance and preparation method thereof

A waterproof coating, exposed technology, applied in the direction of coating, can solve the problems of high material toxicity, high cost, poor market acceptance, etc., and achieve the effect of shortened drying time, good weather resistance and easy construction

Active Publication Date: 2022-01-11
上海用研企业管理服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylic waterproof coatings dry slowly, do not have early rain resistance, and are easily damaged by rain, humid air, etc.; polyurethane waterproof coatings respond quickly, have early rain resistance, and the materials have high tensile properties and elongation at break, which can be effectively Waterproof, the disadvantage is that there are incompletely reacted isocyanate monomers in this material, which are harmful to human body and environment
Polyurethane waterproof coatings are generally two-component, and the material does not have weather resistance. For outdoor polyurethane, other weather-resistant materials need to be added to the surface of the material to ensure waterproof performance. The construction procedure is complicated and the cost is high.
One-component moisture-curing weather-resistant polyurethane material is expensive, low cost performance for civil waterproofing, poor market acceptance, and difficult to promote
Oily materials such as asphalt have good water resistance, but the material itself is highly toxic, seriously damaging the environment, and has poor weather resistance
Coiled materials have good water resistance, but the construction is complicated, requiring professional construction personnel, and the process is dangerous

Method used

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  • Exposed waterproof coating with early rain resistance and preparation method thereof
  • Exposed waterproof coating with early rain resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In the reaction kettle, 10 parts by mass of water, 0.4 parts by mass of substrate wetting agent, 0.4 parts by mass of dispersant 5040, 0.2 parts by mass of solvent-free silicon modified defoamer, 4 parts by mass of alkali Swelling thickener TT-935, 10 parts by mass of rutile titanium dioxide R-699, 25 parts by mass of 1250-mesh quartz powder, after the pigment and filler are added, it is preferable to grind with a grinder at a speed of 1500 rds / min. The grinding temperature is preferably 30-50° C.; the grinding temperature is preferably controlled by circulating cooling. After the uniformly dispersed slurry is prepared, the particle size of the resulting mixture is preferably ground to 40 μm. Add 1 mass part of ammonia water, add 65 mass parts of acrylic emulsion, add acrylic acid emulsion, add 0.1 mass part of carbodiimide crosslinking agent E-01, and disperse uniformly at high speed to prepare a one-component waterproof coating.

Embodiment 2

[0036] In the reaction kettle, 15 parts by mass of water, 0.4 parts by mass of substrate wetting agent, 0.4 parts by mass of dispersant 5027, 0.2 parts by mass of mineral oil modified defoamer, 6 parts by mass of polyurethane Thickener 1190, 15 parts by mass of rutile titanium dioxide R-699, 20 parts by mass of 1250-mesh quartz powder, after the pigment and filler are added, it is preferably ground with a grinder at a speed of 1500 rds / min. The grinding temperature is preferably 30-50° C.; the grinding temperature is preferably controlled by circulating cooling. After the uniformly dispersed slurry is prepared, the particle size of the resulting mixture is preferably ground to 40 μm. Add 2 parts by mass of ammonia water and 60 parts by mass of acrylic emulsion. After adding the acrylic emulsion, add 0.1 part by mass of carbodiimide crosslinking agent V-02-L2, and disperse uniformly at high speed to prepare a one-component waterproof coating.

Embodiment 3

[0038]In the reactor, 20 parts by mass of water, 0.4 parts by mass of substrate wetting agent, 0.4 parts by mass of dispersant 5027, 0.4 parts by mass of mineral oil modified defoamer, 5 parts by mass of polyurethane Thickener 8W, 10 parts by mass of rutile titanium dioxide R-699, 15 parts by mass of 1250-mesh ground calcium carbonate, 15 parts by mass of glass microspheres, after the pigment and filler are added, it is preferably ground with a grinder at a speed of 1500 rds / min. The grinding temperature is preferably 30-50° C.; the grinding temperature is preferably controlled by circulating cooling. After the uniformly dispersed slurry is prepared, the particle size of the resulting mixture is preferably ground to 40 μm. Add 1 mass part of ammonia water, add 60 mass parts of acrylic emulsion, add acrylic emulsion, add 0.1 mass part of carbodiimide crosslinking agent V-02-L2, and disperse uniformly at high speed to prepare a one-component waterproof coating.

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Abstract

The invention provides an exposed waterproof coating with early rain resistance and a preparation method thereof. The coating is prepared from the following components in parts by mass: 60 to 80 parts of acrylic emulsion, 0.2 to 0.5 part of base material wetting agent, 0.3 to 0.6 part of dispersing agent, 0.2 to 0.6 part of defoaming agent, 3 to 8 parts of thixotropic thickening agent, 5 to 20 parts of pigment, 20 to 40 parts of filler, 0.1 to 0.5 part of cross-linking agent, 1 to 2 parts of triggering agent and 10 to 20 parts of water. Before application, a complex bond is formed between the triggering agent and the acrylic emulsion, when the coating is used, the crosslinking reaction between the acrylic emulsion and the crosslinking agent is triggered along with rapid volatilization of ammonia water or ammonium hydroxide, and the coating is high in drying speed and has weather resistance and early rain resistance.

Description

technical field [0001] The invention relates to the field of architectural waterproof coatings, in particular to an exposed waterproof coating with early rain resistance and a preparation method thereof. Background technique [0002] With the extensive use of reinforced concrete in modern buildings, the importance of waterproofing has become increasingly prominent. In order to prevent rainwater, snowwater, groundwater, humid air, etc. from eroding buildings, waterproof coatings are often painted on various parts of buildings, such as: roofs, walls, exterior walls, kitchens and bathrooms, basements, etc. [0003] Due to the relationship between the use environment, the waterproof coating used outdoors needs to have certain weather resistance to avoid material damage and loss of waterproof effect due to external environmental factors, such as ultraviolet radiation, rain erosion, freeze-thaw environment, etc. Therefore, it has weather resistance Resilience is the demand of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/61C09D7/65C09D7/63
CPCC09D133/00C09D7/61C09D7/65C09D7/63C08L79/00C08K3/28C08K5/29
Inventor 唐兴超姜伟基
Owner 上海用研企业管理服务中心
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