Concrete mold release agent and preparation method thereof

Abstract

The present invention discloses a concrete mold release agent and a preparation method thereof. The raw material formula of the mold release agent is that: the amount of water is 80-95% of the total mass, a mass ratio of lard to rosin is 5:1, and other materials comprise, by the total amount of the lard and the rosin, 10-26% of sodium hydroxide, 10-30% of an emulsifying agent, 0.1-1% of tributyl phosphate, 0.2-1.5% of formaldehyde, 0.3-2.2% of dodecyl betaine, and an appropriate amount of organic montmorillonite. The preparation method comprises: carrying out a saponification reaction of lard, rosin and sodium hydroxide at a temperature of 95-105 DEG C under a mechanical stirring condition, and then adding other additives to obtain the finished product. Compared with other types of mold release agents, the mold release agent of the present invention has advantages of stable quality, longe product storage period, low use concentration, long service life, repeated use after one spraying, low pollution on the product after mold releasing, no influence on secondary product processing, maintenance performance providing and the like.

Description

technical field [0001] The invention relates to a release agent, in particular to a release agent for concrete products or other products. Background technique [0002] In the field of building construction, the use of release agents is essential. In order to protect the template, prevent the bonding between components and templates, make the surface of concrete components or products smooth, with complete edges and corners, and obtain perfect special-shaped products, it is necessary to brush the release agent on the contact surface between the template and the concrete. Concrete release agent, also known as concrete release agent or release lubricant, is applied to the inner wall of the formwork to lubricate and isolate, and can effectively promote the smooth separation of the concrete from the formwork during formwork removal, keeping the shape of the concrete intact. If the selection and use of the release agent are improper, it will directly or indirectly affect the qua...

AI Technical Summary

Problems solved by technology

On the one hand, they have their own characteristics, but the cost is relatively high, and the economic benefits are not good.

On the other hand, most of the current release agent products use products based on industrial waste, which cannot meet the needs of concrete aesthetics, especially for high-speed railways and urban viaducts. At the same time, new standards have begun to be used in China to restrict this use of products

In China, although the new products that are already in use meet the actual use requirements, the price is relatively high, which is not conducive to reducing the cost of concrete parts

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