Foam concrete preform release agent and preparation method thereof

Abstract

The invention relates to a foam concrete preform release agent and a preparation method thereof. The foam concrete preform release agent comprises the following components by weight percent: 50-60% of waste oil, 1.5-1.8% of stearic acid, 1.0-1.5% of alkylphenol polyoxyethylene ether (OP-10 emulsifier), 0.02-0.05% of flake caustic soda, 12-15% of talc, 0.01-0.03% of phosphoric acid and 40-45% of water (60-80 DEG C). When the release agent prepared by adopting the formula is used for mould release, the foam concrete preform has no oil stain on the surface, no spallation and no edge defect and is good for second construction; and the preform has low dimensional deviation, the film-forming speed is high, the production cycle is short and the work efficiency is increased. In addition, the prepared release agent can be used to prevent the wooden mould from warping and deforming.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a release agent for a foam concrete prefabricated part and a preparation method of the release agent. Background technique [0002] Concrete release agent, also known as concrete release agent or release lubricant, is a substance that is applied to the inner wall of the formwork to lubricate and isolate, so that the concrete can be smoothly separated from the formwork when the formwork is removed, and the shape of the concrete is kept intact. Compared with the traditional mold release material engine oil or waste engine oil, the release agent has the advantages of easy mold release, no pollution to the concrete surface, no corrosion of the formwork, easy painting, and low price. However, not all types of concrete release agents are suitable for templates made of various materials. For templates of different materials and concrete with different construction conditions and finish...

AI Technical Summary

Problems solved by technology

With the implementation of the national energy saving and emission reduction policy, the production and use of "double solid" bricks are prohibited. A new wall material with excellent performance, energy saving and environmental protection - foam concrete is developing rapidly, and it is bound to replace "double solid" bricks. Most of the release agents used in the production process of foam concrete in China are commonly used concrete release agents. During the demoulding process, it is easy to cause defects such as oil stains, looseness, spalling, and corner defects on the surface of foam concrete prefabricated parts, which is not conducive to secondary construction.

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