Waterproof adhesive for cement base surface, and preparation method and application thereof

Abstract

The invention discloses a waterproof adhesive for a cement base surface, and a preparation method and application thereof. The waterproof adhesive for the cement base surface comprises the following raw materials in percentage by mass: 12%-18% of a water-based acrylic emulsion, 0.2%-0.25% of a water-based defoaming agent, 8%-12% of a water-based tackifier, 0.03%-0.035% of an anti-freezing agent, 4%-6% of a cement early-strength emulsion, 2%-4% of a water-based thickener and 60%-70% of deionized water. The preparation method of the waterproof adhesive in the invention is characterized by comprising the following steps: adding deionized water into dispersion equipment; then adding the water-based acrylic emulsion and the water-based tackifier, and carrying out shearing dispersion at a rotating speed of 550 rad / min to 650 rad / min for 30 min to 35 min; then, adding the cement early-strength emulsion, carrying out dispersion and stirring for 50 min to 60 min at a rotating speed of 1100 rad / min to 1200 rad / min; and finally, adding the water-based thickening agent, the anti-freezing agent and the water-based defoaming agent, and carrying out stirring at the rotating speed of 550 rad / min-650 rad / min for 8 min-12 min to obtain a finished product. The product is easy to dissolve with cement and easy to stir, construction time is effectively saved, construction efficiency is improved, thewaterproof performance of a waterproof layer of the cement base surface is improved, and the waterproof service life of the waterproof layer is prolonged.

Description

technical field [0001] The invention relates to the field of building waterproof materials, in particular to a cement-based surface waterproof glue and a preparation method and application thereof. Background technique [0002] For waterproof construction on the cement base surface, rubber powder is usually mixed with cement to form a mortar, which is used for bonding and protective layer of acrylic (polyester) cloth, and acrylic (polyester) cloth is used for waterproofing. Among them, the mortar mixed with rubber powder and cement has the properties of bonding, crack resistance and sun resistance. [0003] However, the existing rubber powder has the disadvantages of insufficient bonding strength and insufficient sun and rain erosion resistance. The reason is that the traditional rubber powder itself has too much filler and its own adhesive force is insufficient; the second is that when the rubber powder and cement are mixed and dispersed, it is not easy for the constructio...

AI Technical Summary

Problems solved by technology

[0003] However, the existing rubber powder has the shortcomings of insufficient bonding strength, insufficient sun resistance and rain erosion resistance

The reason is that the traditional rubber powder itself has too much filler and its own adhesive force is insufficient; the second is that when the rubber powder and cement are mixed and dispersed, it is not easy for the construction personnel to control the dispersion speed, and it is easy to cause uneven mixing. Dispersion speed is not enough

At the same time, the traditional rubber powder is a powdery material, which also has the following problems: 1. It is not easy to dissolve, and uneven mixing often occurs; 2. Some auxiliary materials cannot be added, resulting in poor waterproof performance and many air bubbles; 3. Small adhesion, resulting in density Reduced, the surface mortar is easy to pulverize, resulting in short life