Outer wall leveling putty and preparation method thereof

Abstract

The invention discloses outer wall leveling putty which is prepared from the following matters in parts by mass: a first component and a second component, wherein the first component is prepared from30 to 35 parts of cement, 30 to 35 parts of pigment filler, 25 to 40 parts of sand, 0.25 to 0.6 part of cellulose, 0.3 to 0.6 part of wood fiber, 0.2 to 0.4 part of PP fiber, 1 to 2 parts of rubber powder and 2 to 4 parts of bentonite; the second component is prepared from 60 to 80 parts of synthetic resin, 20 to 40 parts of water, 0.1 to 0.3 part of bactericide and 0.3 to 0.5 part of a mineral oil defoaming agent; the mass ratio of the first component to the second component is 1 to (0.30 to 0.35). The invention further provides a preparation method of the outer wall leveling putty. The outerwall leveling putty disclosed by the invention has the following advantages of good constructability and filling and leveling performance, large bonding strength, good water resistance, good flexibility and strong crack resistance; follow-up maintenance cost is reduced, engineering construction quality is improved, and engineering construction cost is saved; the preparation method of the outer wall leveling putty has the advantages of simpleness, easiness, practicability and easiness in volume production and popularization.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a two-component waterproof flexible exterior wall leveling putty and a preparation method thereof. Background technique [0002] External wall leveling putty is a thin layer of leveling mortar, which is often used as a supporting building latex paint and has unique Asian characteristics. This is because in China and South Asia, people prefer the decorative effect of paint with smooth and delicate surface, and the exterior wall paint is smooth and delicate, not easy to accumulate dust and easy to clean, which is especially important for areas with serious air pollution. When in use, scrape the putty on the surface of the rough and dry substrate, and after it dries, it is usually sanded and leveled by fine sandpaper to provide a smooth and fine base for the paint. [0003] In recent years, with the continuous development of my country's construction technology, people have paid m...

AI Technical Summary

Problems solved by technology

This kind of putty has low bonding strength, poor water resistance, large shrinkage, and no ability to adjust humidity. If the indoor humidity is too high, it is easy to generate condensation on the surface of the putty, which will cause bulging, peeling, peeling, cracking, etc. of the paint layer.

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