Preparation method of anti-freezing waterproof adhesive for building

Abstract

The invention discloses a preparation method of an anti-freezing waterproof adhesive for a building. The method comprises the steps: adding water into a reaction kettle, heating the reaction kettle to70-80 DEG C, and starting reflux condensation; adding polyvinyl alcohol into the reaction kettle, and starting a stirrer until completely dissolving polyvinyl alcohol; adding a vinyl acetate copolymer emulsion, polyvinyl alcohol and methyl acrylate into the reaction kettle, carrying out stirring, adding a dispersant, an emulsifying agent and a defoaming agent, and carrying out uniform stirring; adding an initiator, and carrying out heat insulation; and cooling the reaction kettle to the room temperature, adding a film forming additive into the reaction kettle, and carrying out uniform stirring to obtain the anti-freezing waterproof adhesive for the building. The prepared adhesive has the advantages of relatively good joint filling property as well as water leakage and seepage prevention when being applied to the building; in particular, the adhesive can still keep a relatively good characteristic in a low-temperature environment; the preparation method is relatively simple and wild inreaction condition; and the raw materials are available and low in price, so that the cost of the adhesive is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a preparation method of antifreeze building waterproof adhesives. Background technique [0002] With the passage of time, the building houses will age accordingly, and the life span of ordinary reinforced concrete buildings is only a few decades. The aging of buildings will bring a series of hidden dangers to human safety and property safety. These include the breeding of insects and ants, especially on the roof, and there may be water leakage and seepage. [0003] The adhesive prepared by the existing preparation method is used for building joints, but the waterproof performance of its joints is not ideal, and because this construction adhesive is generally used outdoors, in high temperature environments, the adhesive Fortunately, it can achieve seam filling and waterproofing, but once it is still exposed to low temperature environments, the existing adhesives will become no...

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Problems solved by technology

[0003] The adhesive prepared by the existing preparation method is used for building joints, but the waterproof performance of its joints is not ideal, and because this construction adhesive is generally used outdoors, in high temperature environments, the adhesive Fortunately, it can achieve seam filling and waterproofing, but once it is still exposed to low temperature environments, the existing adhesives will become non-adhesive, brittle, and cracked. Once there is rain, water will also seep, and the preparation methods are complicated. violent reaction, very dangerous

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