A kind of mold release agent for building aluminum formwork and using method thereof

Abstract

The invention relates to the field of building construction, in particular to a release agent for building aluminum formwork and its application. The release agent is composed of component A and component B, and the preparation raw materials of component A include, in parts by weight, 50-80 parts of polyurethane resin, 0.4-0.8 parts of multifunctional auxiliary, and 0.6 parts of wetting agent. -0.8 part, 9-16 parts of wax auxiliary, 0.04-0.1 part of antibacterial agent, 0.4-0.8 part of defoamer, 0.1-0.16 part of thickener; the B component includes isocyanate curing agent. The release agent of the invention can make the chemical film formed on the surface of the architectural aluminum alloy formwork have super-hydrophobic properties, and during the concrete pouring process, the architectural aluminum alloy surface is not easy to bond with the concrete, and the architectural aluminum alloy formwork is washed with water after use, The setting of the chemical film layer makes the cement easy to separate from the coating film, and does not need to invest a lot of labor and release agent to remove the cement attached to the aluminum alloy formwork, which is beneficial to the recycling of the building aluminum alloy formwork and effectively saves costs.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a release agent for building aluminum formwork and its application. Background technique [0002] The application of aluminum formwork system in the construction industry improves the efficiency of construction and saves manpower and material resources to a large extent. Before the use of aluminum formwork, a release agent must be used. After the formwork is removed, the cement adhered to the surface of the aluminum formwork must be removed. Clean with release agent. Since cement contains strong corrosive components such as strong acid and alkali, if the release agent is not used, it will corrode the spray protection layer and the surface of the aluminum formwork, resulting in uneven and easy-to-use surface of the spray protection layer or the aluminum formwork. Cement, so the surface of the template needs to be surface treated. At present, molybdate passivation, rare earth m...

AI Technical Summary

Problems solved by technology

[0002] The application of the aluminum formwork system in the construction industry improves the efficiency of construction and saves manpower and material resources to a large extent. The aluminum formwork needs to use a release agent before use, and the cement adhered to the surface of the aluminum formwork must be removed after the formwork is removed. Because the cement contains strong corrosive components such as strong acid and alkali, if the release agent is not used, the surface of the sprayed protective layer and the aluminum formwork will be corroded, resulting in uneven and easily Cement is sticky, so it is necessary to carry out surface treatment on the surface of the formwork. At present, molybdate passivation, rare earth metal salt passivation, cerate passivation, silicate treatment and other methods are used to passivate aluminum alloys, but The effect of these passivations is not good, and then a release agent was developed, but the release agent currently on the market contains a large amount of organic solvents, which is not environmentally friendly, and the number of releases is only 3-5 times

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