Environment-friendly coating for protecting bare concrete and preparation method thereof

Abstract

The invention discloses an environment-friendly coating for protecting bare concrete and a preparation method of the coating. The environment-friendly coating for protecting bare concrete comprises the following components by mass percent: 20-60% of organic silane coupling agent, 2-30% of organosilicone oligomer, 0.3-6% of emulsifier, 0.3-0.6% of sterilizing anti-algae agent, 0.01-0.1% of pH regulator and the balance of water. The preparation method of the environment-friendly coating for protecting bare concrete has the advantages that the conditions are moderate, the production process is simple and no organic solvent volatilization problem is caused; the environment-friendly coating for protecting bare concrete is an environment-friendly low-carbon novel material, is stable in property, is weather resistant, rub resistant, mould-proof and anti-algae, and can rapidly permeate without changing the original appearance characteristics of bare concrete and is capable of effectively improving the durability of a bare concrete structure after being coated on the bare concrete structure.

Description

technical field [0001] The invention relates to an environment-friendly coating for clear-water concrete protection and a preparation method thereof, belonging to the field of clear-water concrete protection. Background technique [0002] Fair-faced concrete was produced in the 1920s, and along with concrete is widely used in the field of building construction. In our country, fair-faced concrete is constantly developing along with the development of concrete structure. In the 1970s, in the construction of internal pouring and external hanging systems, fair-faced concrete was mainly used in the reverse construction of precast concrete exterior wall panels, and progress has been made. Fair-faced concrete is also called decorative concrete, and it gets its name because of its great decorative effect. It belongs to one-time pouring molding, without any external decoration, and directly adopts the natural surface effect of cast-in-place concrete as the finish, so it is differe...

AI Technical Summary

Problems solved by technology

However, the emulsion described in this patent needs to be prepared by a high-pressure emulsifier, which consumes a lot of energy

[0005] Patent CN200710187907.3 discloses a silicone waterproof emulsion for building surfaces, which is modified silicon (oxygen) Alkanes and silane coupling agents are emulsified by emulsifiers, but the silicone waterproof emulsion uses triethylamine or pyridine or N, N-dimethylbenzylamine as a catalyst, and the linear or branched sulfonyl chloride structure is a hydrophobic group , resulting in a decline in the performance of the emulsion in harsh environments, and does not have the ability to resist algae

[0006] Patent CN200810052688.2 discloses a waterproof and anti-corrosion architectural coating containing both "organic groups" and "inorganic structures", but the material contains a relatively high content of rutile titanium dioxide as a dye and calcium carbonate as a filling material. Reduce the water resistance of the material, and the product is prone to organic phase-inorganic phase separation

[0007] Patent CN102134443A discloses a concrete protective agent containing silicone resin emulsion, siloxane additive and potassium methyl silicate, but the material contains a large amount of deionized water, which will seriously affect the construction effect of the material on the facade structure, and must be Repeated application for many times, and the waterproof ability of this material is limited, so it cannot guarantee the long-term waterproof requirements of concrete structures