A kind of waterproofing agent for thermal insulation cement mortar and its application

Abstract

The invention discloses a waterproofing agent for thermal insulation cement mortar. The waterproofing agent is potassium salt of eicosic acid. The invention also discloses a thermal insulation cement mortar, comprising Portland cement, thermal insulation material and waterproofing agent, the waterproofing agent is potassium salt of eicosic acid, and the saturated thermal insulation cement mortar Water absorption ≤1.2%. After the waterproofing agent of the present invention is applied to cement mortar, it can make the cement mortar have light weight, heat preservation, heat insulation and waterproof performance at the same time, and under the mutual cooperation with the heat preservation material, the waterproof performance and The strength requirement of cement mortar.

Description

technical field [0001] The invention designs a waterproofing agent and its application, belonging to the technical field of chemical materials. Background technique [0002] In recent years, great progress has been made in my country's building energy-saving work, and the thermal insulation technology of building exterior walls is particularly prominent. Commonly used for external wall insulation are thermal insulation mortar and external polystyrene board, polyurethane and other organic polymer thermal insulation materials. Both of these two insulation layers have defects: thermal insulation mortar is generally mixed with thermal insulation materials such as expanded polystyrene particles and expanded perlite particles in cement, and its waterproof performance is poor. If cracks occur in the outer wall, rainwater will enter the cracks. The inner layer of the wall is insulated, and the thermal conductivity of water is relatively large. If there is water in the inner layer o...

AI Technical Summary

Problems solved by technology

Both of these two insulation layers have defects: thermal insulation mortar is generally mixed with thermal insulation materials such as expanded polystyrene particles and expanded perlite particles in cement, and its waterproof performance is poor. If cracks occur in the outer wall, rainwater will enter the cracks. The thermal insulation inner layer of the wall, and the thermal conductivity of water is relatively large, there is water in the inner layer of the wall, the thermal insulation effect is poor, and it will cause mildew and damage to the inner layer of the wall

At present, the polystyrene board and organic polymer insulation materials such as polyurethane and organic polymer insulation materials are constructed in one construction. This technology has better insulation effect, but the construction time is longer, the construction cost of insulation is high, and the construction is difficult. It is also relatively large, and there is a fire hazard in the process of construction and use.

Some construction units add excessive flame retardants to organic polymer insulation materials. Although this can prevent fires, it will increase the amount of smoke and smoke toxicity when organic polymer insulation materials are burned.

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