Concrete outer wall protective agent and preparation method thereof

Abstract

The invention discloses a concrete outer wall protective agent and a preparation method thereof. The concrete outer wall protective agent comprises the following components in percentage by weight: 22-28% of deionized water, 25-45% of acrylic acid polyurethane emulsion, 20-40% of fluorocarbon emulsion, 0.1-0.2% of a wetting agent, 0.2-0.3% of a defoaming agent, 0.1-0.2% of preservatives, 4-7% of propylene glycol monoethyl ether, 0.3-0.5% of a thickener, and 0.3-0.5% of benzophenone sulfonic acid derivatives, wherein the fluorocarbon emulsion is prepared from chlorotrifluoroethylene and ethoxyethylene through emulsion; the propylene glycol monoethyl ether is used as a film forming aid; the benzophenone sulfonic acid derivatives are used as ultrasonic absorbent. The protective property of the protective agent can be improved by taking acrylic acid polyurethane emulsion and fluorocarbon emulsion as film forming aids and matching with multiple functional auxiliaries, and the protective agent is prominent in antifouling property and weather-resistant and aging-resistant. The invention further provides a preparation method for the concrete outer wall protective agent.

Description

technical field [0001] The invention relates to the technical field of concrete surface protection, in particular to a concrete outer wall protective agent and a preparation method thereof. Background technique [0002] In order to reduce the cost of concrete-structured residential exterior walls, some companies have begun to use colored concrete exterior walls in recent years to replace expensive exterior wall bricks and other residential facades. Due to the lack of understanding of the durability of concrete in the past few years in China, the damage caused by the low durability of concrete materials in many projects is very prominent. A large number of concrete structures are damaged far before their design life, which causes great losses to the national economy. The main failure modes of concrete exterior walls are as follows: [0003] (1) freeze-thaw damage; [0004] (2) Carbonization and steel corrosion damage; [0005] (3) Alkali aggregate reaction damage; [000...

AI Technical Summary

Problems solved by technology

[0003] (1) freeze-thaw damage;

[0004] (2) Carbonization and steel corrosion damage;

[0006] (4) cracking and leakage damage;

[0007] (5) Multi-factor comprehensive damage;

[0009] At present, the protection of concrete surface in the market is mainly based on maintenance, the protective effect on concrete is only short-term benefits, and the weather resistance and stain resistance are average, it is easy to turn yellow and dirty, and it is easy to crack under the action of external force, which cannot adapt to actual engineering. Performance requirements such as aesthetics and strength of the exterior wall

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