Dry-mixed colored waterproof dustproof mortar and preparation method thereof

Abstract

The invention relates to the field of building materials, specifically to dry-mixed colored waterproof dustproof mortar. The mortar is mainly prepared from the following raw materials in parts by mass: 25 to 35 parts of white cement, 40 to 55 parts of quartz sand, 10 to 25 parts of heavy calcium carbonate, 0.6 to 1.5 parts of redispersible latex powder, 0.4 to 1 part of a modified water repellent,0.01 to 0.05 part of starch ether, 0.06 to 0.15 part of hydroxypropyl cellulose ether, 0.01 to 1.2 parts of an inorganic pigment, 0.06 to 0.2 part of a surfactant, 0.02 to 0.15 part of a retarder, 0.5 to 3.0 parts of a brightening agent and 0.4 to 1.0 part of wood fiber. The mortar provided by the invention has the same characteristics of rich colors and light weight as organic coatings, and alsohas the same advantage of good durability as inorganic materials.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a dry-mixed colored waterproof and dustproof mortar and a preparation method thereof. Background technique [0002] At present, the materials for exterior wall finishes on the market include paint, real stone paint, porcelain tiles, marble, granite, metal, glass curtain wall, cement-based decorative mortar and other materials. Among them, the installation process of marble, granite, metal, glass curtain wall and other materials is more complicated and expensive, and the safety and reliability of porcelain tiles are poor, so paint is often used for building finishes. However, the coating has poor weather resistance and insufficient durability, making it difficult to satisfy developers and owners. Therefore, it is necessary to develop a wall material that is easy to install, low in cost, waterproof and dustproof, weather-resistant, and durable. [0003] At present, the facing mo...

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Problems solved by technology

[0005] 1. Ordinary Portland cement is traditionally used as the main inorganic cementitious material. This type of finishing mortar usually needs to be painted with paint on the surface;

[0006] 2. The ternary system is a composite cementitious material composed of CAC, POP and gypsum to reduce efflorescence and color difference. The surface of this type of decorative mortar is not painted with paint, but it needs to be overcoated, that is, the water resistance is poor;

[0008] Therefore, the existing technology of colored decorative mortar is not yet mature, and it is impossible to find the balance point of suppressing efflorescence, color difference, water resistance and flexibility, and it is impossible to make the coating have no efflorescence, no color difference, and good water resistance at the same time. sex and flexibility

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