Environment-friendly wall surface interfacial agent and preparation method thereof

Abstract

The invention discloses an environment-friendly wall surface interfacial agent and a preparation method thereof. The environment-friendly wall surface interfacial agent is prepared from the following components in percentage by mass: 70.2-74 percent of deionized water, 2-4 percent of polyvinyl alcohol, 7.5-17.5 percent of polyvinyl acetate emulsion, 0.2-0.4 percent of a functional additive, 10-14 percent of a functional emulsion, 0.05-0.1 percent of a defoamer and 0.05-0.1 percent of a fungicide. The preparation method comprises the following steps: adding the deionized water and the polyvinyl alcohol in a reaction kettle according to a ratio, rising the temperature to completely dissolve the deionized water and the polyvinyl alcohol, adding the functional additive, carrying out reaction for a certain time and cooling, then sequentially adding the polyvinyl acetate emulsion, other functional emulsions, the defoamer and the fungicide in the reaction kettle, and uniformly stirring to prepare the environment-friendly interfacial agent. The product is used for surface treatment of various walls, is liable in film formation, strong in seepage force and excellent in water resistance, can be used for cement hair manufacturing, can greatly improve the subsequent construction performance of a wall surface and remarkably improves the bonding strength of plastering mortar to the wall surface.

Description

technical field [0001] The invention belongs to the technical field of chemical building materials, and in particular relates to a water-based environment-friendly wall interface agent. Background technique [0002] At present, since most of the building walls will crack, hollow or even fall off when the subsequent plastering mortar layer is applied, some completed walls will soon appear alkali-returning and peeling phenomena. The existing method is to use 107 glue, 108 glue, white latex, etc. or compound them with the above various glues as interface agents to treat the wall surface. Although these interface agents can delay the appearance of cracking and peeling to a certain extent, some products have low environmental performance and add harmful substances such as formaldehyde; some products have poor construction performance, are sticky and difficult to paint or splash, etc.; The most important thing is that the product has insufficient penetration to the wall, low seal...

AI Technical Summary

Problems solved by technology

Although these interface agents can delay the appearance of cracking and peeling to a certain extent, some products have low environmental protection performance and add harmful substances such as formaldehyde; some products have poor construction performance and are sticky and difficult to paint or splash; the most important The most important thing is that the product has insufficient penetration to the wall, low sealing force and bonding strength, not durable aging resistance, and poor water resistance. It cannot meet the requirements in the "hair-making" construction of the wall with higher requirements. No lint, slow drying, cracking, etc.

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