Fluorocarbon-type concrete protective agent and preparation method thereof

Abstract

The invention provides a concrete protective agent, comprising the following components by mass percent: 4-8% of fluorocarbon compound, 2-4% of cosolvent and the balance of deionized water. The concrete protective agent provided by the invention has high permeability, and can rapidly permeate into pores below the concrete surface; the depth can be up to 5-10mm; crosslinking reaction is carried out on the pore walls, so as to form a protective layer. The surface energy of the concrete is greatly reduced by the protective layer; the numerical value is not only much lower than the surface tension value of water, but also lower than the surface tension values of animal and vegetable fats and mineral oil; the concrete has waterproof and oilproof efficacies; adhesion of greasy dirt substances also can be effectively prevented. A method for preparing the concrete protective agent is also provided by the invention.

Description

technical field [0001] The invention relates to a concrete protective agent, in particular to a fluorocarbon concrete protective agent with waterproof, oil-proof and antifouling functions and a preparation method thereof. Background technique [0002] Cement concrete is a porous material. In addition to the macropores visible to the naked eye, there are also a large number of capillary pores. These micropores are very easy to absorb water through capillary action, and harmful chemicals such as chloride ions and sulfates will also enter with water. Inside the cement concrete, it will cause various erosion and damage of concrete and steel bars, reducing the service life of concrete. [0003] At present, the protection of concrete has not received the attention of relevant departments. Only relevant specifications such as marine concrete used in corrosive environments and fair-faced concrete with concrete as the final decorative surface clearly put forward the requirements for ...

AI Technical Summary

Problems solved by technology

The coating endows Portland concrete curbs with decorative and protective functions, weather resistance, and temperature change resistance, but its composition is too complicated, the ingredients are difficult, and the preparation method is too cumbersome, which is not conducive to mass production and on-site preparation. The penetration depth of the paint is insufficient, and the protective effect is poor