Mold releasing agent for phosphogypsum concrete prefabricated component

Abstract

The invention discloses a mold releasing agent for a phosphogypsum concrete prefabricated component. The mold releasing agent contains the following components in parts by weight: 15-30 parts of vegetable oil, 0.5-2 parts of vinyl bistearate amide powder and 0.1-1 part of graphene powder. The mold releasing agent has the beneficial effects that components are simple, the mold releasing agent is easy to be popularized in industry, the components are harmless to a human body and the environment, and the mold releasing agent has relatively wide application prospects; a relatively effective isolating membrane can be formed and has a relatively small mold releasing force; meanwhile, the mold releasing agent has relatively great mechanical strength, so that irregular prefabricated components canbe protected, and the situations that a corner angle of the prefabricated component is fractured during the mold release and the like can be avoided; by virtue of the hydrophobic property of the components, the formed isolating membrane is capable of well retaining moisture, and the situation that the surface of the prefabricated component is cracked, roughed and the like due to the over-high water loss speed in the maintenance process of the prefabricated component can be well prevented; the mold releasing agent has relatively strong mechanical property, the flushing resistance of the mold releasing agent is improved, graphite and vinyl bistearate amide are added, and meanwhile, the components do not contain moisture, so that the normal function of the isolating membrane can be realizedat a low temperature.

Description

technical field [0001] The invention relates to the field of admixtures for making concrete prefabricated components, in particular to a release agent for phosphogypsum concrete prefabricated components. Background technique [0002] During the production process of phosphogypsum concrete prefabricated components, a layer of release agent needs to be coated on the mold to play the role of lubrication and isolation, and at the same time effectively reduce the adhesion between the concrete prefabricated components and the mold, so that the concrete prefabricated components in When removing the formwork, it can be separated from the mold smoothly. In addition, phosphogypsum concrete contains phosphorus, sulfur and other substances, which are highly corrosive to the component mold. Long-term production of phosphogypsum concrete prefabricated components will have a negative impact on the service life of the mold and the quality of the prefabricated components. big impact. [000...

AI Technical Summary

Problems solved by technology

[0005] 1) The components are complex and not easy to popularize; 2) The effect is not good when applied to phosphogypsum concrete prefabricated components, and it is easy to cause cracks at the corners of the concrete prefabricated components during demoulding; 3) It is used as a water-based release agent , the erosion resistance is not optimistic, the freezing point is not low, resulting in low temperature and easy to freeze, so the use is limited in low temperature and rainy periods; 4) It has no isolation effect on sulfur, phosphorus and other substances, which is easy to cause corrosion on the surface of the mold, and will cause corrosion. Bubble-like defects on the surface of prefabricated components

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