Long-acting concrete water-based mold release agent suitable for steel mold and preparation method of mold release agent

Abstract

The invention belongs to the technical field of chemical building materials, and particularly relates to a long-acting concrete water-based mold release agent suitable for a steel mold and a preparation method of the mold release agent. Aiming at the problems, the invention mainly overcomes the defects in the prior art, and provides the long-acting concrete water-based mold release agent suitablefor the steel mold and the preparation method of the mold release agent; the long-acting concrete water-based mold release agent comprises the following components: vegetable oil, a coalescing agent,a compound emulsifier, a stabilizer, a corrosion inhibitor and water, wherein the coalescing agent comprises a long-chain alkyl silane coupling agent and aminopropyltriethoxysilane. The prepared concrete water-based mold release agent is stable in performance, good in water scouring resistance and good in reusability, and the apparent mass of hardened concrete can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of chemical building materials, and in particular relates to a long-acting concrete water-based release agent suitable for steel molds and a preparation method thereof. Background technique [0002] Concrete release agent, also known as concrete release agent, is a functional material between formwork and concrete that can isolate and lubricate. The use of release agent can effectively reduce the distance between concrete and formwork. Adhesion, so that the concrete can be removed from the formwork smoothly when the formwork is removed, and the shape is kept intact and clean. At present, there are various types of release agents at home and abroad, and it is necessary for the construction industry to choose a good and suitable concrete release agent for different use situations. Traditional machine oil, mineral oil or animal and vegetable oil are used as mold release agents, although the mold release effect...

AI Technical Summary

Problems solved by technology

However, the existing concrete water-based release agents have strong hydrophilicity and poor water erosion resistance, are not suitable for rainy and humid construction environments, and are difficult to reuse during application, thereby increasing the work cost

[0004] Patent CN107603704A discloses a water-based release agent for fair-faced concrete, which has good demoulding effect and good stability, but does not evaluate its reusability and erosion resistance, and the preparation process is complicated, requiring extraction, vacuum distillation, Repeated washing and heating and cooling operations

[0005] Patent CN104531309 discloses a water-based polyurethane concrete release agent, which improves the adhesion fastness of the release agent and has good wear resistance and erosion resistance, but does not evaluate its long-term effect and reusability

At present, there are very few studies on long-acting water-based release agents suitable for specific molds, and most of the water-based release agents have mediocre evaluation effects on water resistance and long-term performance.

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