Super-hydrophobic coating for alkali efflorescence resistance of cement mortar and preparation method of super-hydrophobic coating

A super-hydrophobic coating and cement mortar technology, applied in cement coatings, coatings, etc., can solve the problems of easy wear, wide spacing, mechanical wear of micro-column structures, etc., to achieve mechanical wear resistance, simple preparation process, and reduce water absorption sexual effect
CN113248204AInactive Publication Date: 2021-08-13SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2021-08-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a super-hydrophobic coating for alkali efflorescence resistance of cement mortar and a preparation method of the super-hydrophobic coating. The coating comprises a cement coating which is arranged on a cement mortar base material and provides roughness, and hydrophobic emulsion is arranged on the surface of the cement coating; wherein the cement coating comprises the following components: cement, sand and pigment; in the cement coating, the mass ratio of cement to water to sand to pigment is 1: (0.5-1), the mass ratio of cement to water to sand to pigment is 1: (2-2.75), and the mass ratio of cement to water to sand to pigment is 1: (0.06-0.072). The method comprises the following steps: constructing a cement coating on a cement mortar base material; and coating the hydrophobic emulsion on the surface of the cement coating, and drying to obtain the hydrophobic cement coating. According to the invention, a layered coarse structure is formed by the micron-scale sand and the micro-nano-scale cement product, the coarse structure improves the hydrophobicity of the hydrophobic coating, reduces the usage amount of the hydrophobic agent, and improves the durability of the super-hydrophobic coating, and the super-hydrophobic mortar has waterproofness and self-cleaning property and can alleviate the saltpetering problem; and the preparation process is simple and easy to control.
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Description

Technical field

[0001] The present invention relates to a hydrophobic coating for cement and a preparation method thereof, and more particularly to a superhydrophobic coating for cement sander and anterior base. Background technique

[0002] As a wall decorative material, the finished mortar is low in the cost, the construction is convenient, but in practical applications, the surface of the wall will have a serious degradation, the most serious is surface umpakistine, so that The appearance quality decreased significantly. One of the necessary conditions of the ubiquitiasis is that there is a water that is easy to soluble salt to the surface, in order to resist moisture, the common waterproof method mainly includes reducing the amount of mixing and water during concrete molding or by doping or hydrophobic water The agent, but these methods are easy to aging in long-term use or even drum cracking. Unlike conventional closed coatings, silicone waterproofants can rely on chemical b...

Claims

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