Concrete release agent and preparation method thereof

Abstract

The invention discloses a concrete release agent. The concrete release agent is prepared from the following raw materials in parts by weight: 10-20 parts of fluorine-containing linoleic acid compound,20-30 parts of modified vinyl fluorosilicone oil, 3-6 parts of dinonyl phenol polyether-7-phosphate, 3-6 parts of N-[3-(2-furyl)acryloyl]-L-phenylalanyl-glycyl-glycine, 1-3 parts of an emulsifier, 15-20 parts of montmorillonoid, 1-3 parts of a quaternary ammonium salt surfactant, 1-3 parts of a defoamer, and 65-75 parts of water; the fluorine-containing linoleic acid compound is prepared from linoleic acid and hexafluorobutadiene through Diels-Alder reaction. The invention also discloses a preparation method of the concrete release agent. The concrete release agent prepared by the preparationmethod has stable performance, good release effect and high release efficiency, can greatly reduce environmental pollution and material cost, and ensure appearance aesthetics of concrete members.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a concrete release agent and a preparation method thereof. Background technique [0002] With the development of the economy and the advancement of urban-rural integration, high-rise buildings have sprung up like mushrooms after rain, and flat roads meander to the distance, presenting a modern urban-rural combination cityscape. Concrete is an indispensable common building material in the construction of these high-rise buildings, and mixed soil is a kind of building material with high plasticity, which can make the architect's architectural ideal into reality. During its construction, it is often necessary to use plates or special-shaped molds to support it first. Before injecting evenly mixed concrete raw materials into the mold, it is also necessary to brush a layer of concrete release agent on the inside of the mold and formwork to make it effective. Improve const...

AI Technical Summary

Problems solved by technology

Traditional release agents are mostly made of engine oil or waste engine oil plus diesel. This type of release agent is easy to pollute the concrete surface and also cause pollution to the environment to varying degrees.

At present, the domestic release agents mainly include soap release agents, oil release agents, paraffin release agents and oil-based release agents, which generally have poor release effects, are difficult to remove after removal, and are easy to damage the concrete surface. Defects that cause damage, affect construction efficiency and increase construction costs

[0004] China Patent Office Patent Publication No. CN1021972C discloses the use of vegetable oil foot soap to produce mold release agents. Although it has the characteristics of non-toxicity and strong oiliness, the production cost is too high in actual production, which is not conducive to mass production.