Waterfroof agent for cement mortar and its preparation method

Abstract

The invention relates to a waterfroof agent used in cement mortar and a preparation method thereof. The waterfroof agent comprises the following raw materials of: by weight, 5.0-15.0 parts of paraffin, 3.0-5.0 parts of silicone oil, 0.5-3.0 parts of aliphatic acid, 1.0-3.0 parts of triethanolamine, 0.4-2.5 parts of sodium hydroxide and 60.0-100.0 parts of deionized water. The preparation method comprises the following steps of: firstly respectively weighing the above raw materials, mixing, melting, heating, saponifying, cooling, homogenizing, examining, and packaging to obtain a milky thick liquid waterfroof agent. The waterproof agent is aqueous and environmentally friendly, is nontoxic and tasteless, causes no pollution, is convenient to use, and has good compatibility with cement mortar. With the addition of the waterproof agent, cured and dried cement mortar has a strong waterproof function and can effectively avoid entry of rainwater, thus guaranteeing construction quality and service life.

Description

Technical field [0001] The invention relates to the field of building materials, in particular to a waterproofing agent used in cement mortar and a preparation method thereof. Background technique [0002] At present, there are many varieties and specifications of waterproof materials used in various buildings in my country, but they can be summarized into three main categories, namely: waterproof coiled materials, waterproof coatings and sealants. After years of actual use results analysis, these materials have common shortcomings: [0003] 1. The main raw materials used are all organic polymer materials. Although the finished products have good elongation and certain tensile strength, some products have been modified by other raw materials and various methods, and some of their properties have been improved to varying degrees. However, the weathering and aging resistance of the final product is subject to certain restrictions, and there is no very satisfactory product; [0004] ...

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Problems solved by technology

Such as: the waterproofing of roofs, warehouses, walls, etc., has been eroded by the sun's ultraviolet rays, harmful gases in the air, hot high temperature and freezing climate for a long time, and the various performances of the products are seriously threatened, and there will be problems. The rapid aging of waterproof materials causes leakage, which greatly shortens the service life of buildings;

[0005] 3. Since the waterproof material covering the surface of the building is generally a flexible material, the compressive performance is not high. When subjected to high pressure, the waterproof material will be displaced or the waterproof layer will be damaged.

Otherwise, the purpose of the project cannot be achieved;

[0006] 4. If the surface of the waterproof layer is covered with a layer of pressure-resistant protective material, some problems will arise

That is: a. Increase the load of the building; b. Increase the construction cost; c. Increase the construction process, extend the construction period, increase the labor intensity of workers and the construction cost

[0007] 5. The organic waterproof material exposed on the surface is often exposed to the sun, it will absorb heat, cause the temperature to rise and soften the asphalt layer, emit harmful gases, and cause environmental pollution.

Such as: a. Sprayed on the surface of buildings or other objects, although it has a certain waterproof function after drying, the waterproof function does not last for a long time, and the original waterproof effect will soon be weakened or lost.

b. The method of directly mixing and using it in cement mortar is limited by the amount added. Adding a large amount will increase the cost, and adding a small amount will not have obvious waterproof effect

c. The raw material price of organic silicon is high, and the product cost after emulsification is also high, which affects the use of some projects

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