A binder with inorganic minerals as the core component

Abstract

The invention discloses an adhesive which takes inorganic minerals as core components and is applied to building decoration materials. The adhesive is prepared from components in percentage by weight as follows: 15%-40% of Portland cement, 0.5%-25% of attapulgite or modified attapulgite, 40%-70% of graded sand, 0-3% of bentonite, 0.1%-5% of aluminum sulfate, 0.3%-1% of a thickening and moisturizing agent, 0-1% of an antifreeze agent, 0-3% of an early enhancer, 0-1.5% of a retarder and 0-0.3% of a water reducer. The adhesive has waterproof, damp-proof and anti-seepage performance, has good freezing and thawing resistance and excellent adhesion performance and is high in early strength and good in weather resistance, and the later strength is also greatly improved.

Description

technical field [0001] The invention belongs to the field of building decoration materials, and specifically relates to a block-shaped building decoration material adhesive with inorganic minerals as the core component, which is generally used for pasting building decoration materials such as ceramic tiles, mosaics, and stone materials. Background technique [0002] Adhesives for ceramic tiles, mosaics, stone and other building decoration materials are generally divided into several categories, one is cement-based dry powder products (commonly known as tile adhesives), and the other is pre-mixed organic adhesive products , as well as two-component and solution additives and caulking for pointing. Now analyze the characteristics of the two tile adhesives: [0003] 1. Cement-based tile adhesive. This type of product is a dry powder product mixed with cement, fine sand and high molecular polymer according to a certain proportion. Its characteristics are: ①It can be bonded aft...

AI Technical Summary

Problems solved by technology

[0006] 1. Cement-based tile adhesives and various organic adhesive tile adhesives have low durability and cohesive force. Because of the shrinkage of cement curing process and the change of temperature and humidity, it will easily cause hollowing and collapse.

[0007] 2. The organic polymers added to the cement base are mainly redispersible latex powder. The core technology of the latex powder is controlled by western developed countries. At present, it is completely dependent on imports, so the price is expensive. Domestic tile adhesive manufacturers often use fake rubber and Low-performance rubber powder, or reduce the amount of rubber powder added to control costs, seriously affecting the quality and performance of tile adhesives

[0008] 3. For some tile adhesives, the initial setting time is long, the final setting time is more than 24-40 hours, and the construction period is long

[0009] 4. Some low-quality tile adhesives use some low-priced rubber powder, which contains DBP (dibutyl diformate), which will volatilize in large quantities during the construction process, seriously affecting the health of users and subsequent living health, and may damage the quality of men. Genital function, the country has banned it as an additive, but because of its low price, it is still favored by many manufacturers

[0010] 5. The weather resistance of organic glue and polymer cement-based tile adhesive is poor, and the molecular chain breaks under long-term ultraviolet light, high temperature, and alternating dry and wet conditions, resulting in subsequent quality decline

[0011] 6. Due to the large amount of unreacted calcium hydroxide and other alkaline substances in the traditional cement-based tile adhesive, it will spit white and return to alkali in the later stage (the construction industry becomes wall cancer), and cause the appearance and interior of the tile to loosen, resulting in a decline in quality

[0012] 7. Due to the porosity of the cement itself, traditional cement-based adhesives, when water molecules penetrate into the material, some calcium hydroxide that has not been fully hydrated will dissolve and be lost; The infiltration of molecules makes calcium carbonate become calcium bicarbonate and dissolves and loses; when the loss of calcium hydroxide inside the cement-based object reaches more than 35%, the material strength has basically been lost, and the adhesion is basically zero

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