Lightweight leveling putty and preparation method thereof

Abstract

The invention relates to a lightweight leveling putty. The lightweight leveling putty comprises, by weight, 10-25 parts of white Portland cement, 15-25 parts of desulfurized gypsum powder, 10-15 parts of closed cell perlite, 35-45 parts of heavy calcium carbonate, 3-6 parts of talcum powder, 1-3 parts of renewable dispersible latex powder, 0.2-0.5 parts of cellulose, 0.1-0.2 parts of starch ether and 0.1-0.3 parts of an air entraining agent. The invention also provides a preparation method of the lightweight leveling putty. The lightweight leveling putt has the advantages of reduction of the heat conduction coefficient of mortar, and solving of masonry cold bridges, and the preparation method has the advantages of simplicity, easy operation, and convenience for industrial production and application.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a lightweight leveling putty and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the implementation of major strategies for energy conservation and emission reduction, as well as the increasingly prominent problem of environmental pollution caused by solid waste, new building materials and energy-saving products have become urgently needed products for urban buildings in my country. Using solid waste such as tailings powder , waste sand, industrial slag, fly ash, desulfurized gypsum and construction waste, etc. have been used to replace non-renewable mineral raw materials to manufacture building wall blocks and lightweight wall panels. Industrialization, and in order to reduce building energy consumption and improve energy utilization efficiency, my country has gradually adopted lightweight wall panels and various energy-sav...

AI Technical Summary

Problems solved by technology

The dry density of lightweight blocks is generally 450kg / m 3 -950kg / m 3 , the thermal conductivity is 0.15W / (m K)-0.35W / (m K), while the dry density of ordinary masonry and plastering mortar is generally 1800kg / m 3 Above, the thermal conductivity is 0.8W / (m·K)-1.0W / (m·K), the thermal conductivity of the two is quite different, it is easy to cause the cold bridge phenomenon of masonry, resulting in new building energy consumption; in addition, Lightweight blocks are mostly porous structures with high water absorption, while ordinary mortar generally has poor water retention, and it is also easy to cause mortar pulverization, hollowing and cracking, which affects the quality of the entire masonry

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