Building template release agent and building template thereof
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A technology of building formwork and release agent, which is used in construction, building structure, and on-site preparation of building components, etc. Acid hydrolysis and other problems occur to achieve the effect of dense release layer, strong adhesion, good isolation effect and lubricity
Active Publication Date: 2019-08-02
李文忠
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However, due to the long-term contact of the template after spraying or coating the release agent with alkaline concrete, there will be some reactions between the release agent and the concrete, resulting in some concrete residues. It is easy to be hydrolyzed by alkali, or acid hydrolyzed under external acidic conditions, that is, because it is not resistant to acid and alkali, the release agent has defects such as pulverization, so this type of release agent needs to be sprayed or coated every time it is used
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Embodiment 1
[0022] A building formwork release agent, comprising A component and B component, by weight percentage, A component comprises 40% rosin, 10% styrene-butadiene copolymer, 25% paint spirit and 25% ethyl acetate, component B consists of 90% cyanoacrylate and 10% hydroxyethyl cellulose.
[0023] Spray component A on the surface of the wooden formwork, dry at room temperature for 2 hours to form a primer layer, spray component B on the surface of the primer layer, and obtain a cured and dried release layer after 1 minute.
Embodiment 2
[0025] A building formwork release agent, comprising A component and B component, by weight percentage, A component comprises 40% rosin, 10% styrene-butadiene copolymer, 25% paint spirit and 25% ethyl acetate, component B consists of 90% cyanoacrylate and 10% hydroxyethyl cellulose.
[0026] Spray component A on the surface of the steel formwork, dry at room temperature for 2 hours to form a primer layer, spray component B on the surface of the primer layer, and obtain a cured and dried release layer after 1 minute.
Embodiment 3
[0028] A building formwork release agent, comprising A component and B component, by weight percentage, A component comprises 40% rosin, 10% styrene-butadiene copolymer, 25% paint spirit and 25% ethyl acetate, component B consists of 90% cyanoacrylate and 10% hydroxyethyl cellulose.
[0029] Spray component A on the surface of the aluminum template, dry at room temperature for 2 hours to form a primer layer, spray component B on the surface of the primer layer, and obtain a cured and dried release layer after 1 minute.
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Abstract
The invention provides a building template release agent and a building template. The building template release agent comprises a component A and a component B, in percentage by weight, the componentA comprises 20-80% of resin, 20-80% of a solvent and 0-30% of a first auxiliary agent, and the component B comprises 70-100% of cyanoacrylate and 0-30% of a second auxiliary agent. The building template comprises a base board, a primer layer and a demolding layer, the primer layer and the demolding layer are sequentially arranged on the surface of the base board and are respectively formed by drying the component A and the component B in a building template demolding agent. The building template release agent comprises the two components, the two components can be used as release agents to supplement each other in effect, the component A and the component B can be bonded into a whole strongly while resisting acid and alkali, the component A is resistant to acid and alkali, the defect thata demolding layer formed by drying the component B is pulverized due to the fact that the demolding layer is not resistant to acid and alkali can be effectively overcome, the building template and concrete can be effectively separated, and the component A can be repeatedly used for a long time.
Description
technical field [0001] The invention relates to the construction field, in particular to a building formwork release agent and a building formwork. Background technique [0002] Concrete molding needs to be fixed by formwork, and the formwork must be removed after the concrete has a certain strength. Since the building formwork is in direct contact with the concrete, it will cause corrosion to the building formwork, such as the aluminum formwork, thus affecting its service life. At the same time, it is difficult to disassemble the formwork because it is in contact with concrete when it is disassembled, and the surface of the formwork is likely to remain concrete after disassembly. During the process of removing the concrete, it needs to be removed manually, which greatly increases the labor cost. [0003] At present, there are mold release agents on the market. By spraying or coating on the formwork, it can isolate and lubricate between the formwork and the concrete, so as ...
Claims
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Application Information
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