Dispensing adhesive agent for connection of mosaics and production process

Abstract

The invention discloses a dispensing adhesive agent for connection of mosaics and a production process. The adhesive agent comprises, by weight, 20%-30% of plasticizers, 18%-33% of polyvinyl chloride paste resins, 0.5%-2% of curing agents, 1.0%-12% of endcapped polyurethane prepolymers, 6%-13% of nano calcium carbonate, 3%-16% of heavy calcium carbonate, 3%-23% of calcite powder, 0.1%-1% of coupling agents, 0.3%-4.5% of heat stabilizers, 0.2%-6% of water-removal agents, 0.4%-1.8% of thixotropic agents and 0%-2% of diluents. The adhesive agent for connection of mosaics does not need base materials such as paper, silk screens and the like, has excellent water resistance and can raise the bonding strength of mosaics.

Description

technical field [0001] The invention relates to a dispensing adhesive for forming joints of mosaics and a manufacturing process thereof. Background technique [0002] At present, domestic mosaics need to be connected by paper stickers or net stickers, and most of the adhesives used are white latex, which is water-resistant, weather-resistant, and durable. White latex or other existing adhesives cannot achieve the purpose of connecting and forming a joint, and the overall connection must be realized through kraft paper, synthetic fiber net or glass fiber net. The adhesive itself only plays the role of bonding the mosaic block and the substrate (kraft paper, synthetic fiber mesh or glass fiber mesh). Paper mosaic is the first generation of mosaic bonding technology, and net-sticking mosaic is the second generation of mosaic bonding technology. The adhesives of the previous two generations have many shortcomings: [0003] (1) Adhesives used in the last two generations for for...

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Problems solved by technology

[0004] (2) The water resistance of the previous two generations of adhesives is not good, and the water resistance is ordinary. In boiling water (100°C under standard environment), the adhesiveness is lost or the adhesive strength is obviously attenuated in 5 to 10 minutes. At room temperature, it is resistant to heat and humidity. The humidity is not good, and the requirements for the storage of the mosaic after forming are relatively high, and the mosaic particles are prone to fall off

[0005] (3) The last two generations of adhesives seriously affect the construction effect of the mosaic after the mosaic is connected.

Seriously affect the wetting contact between mosaic particles and cement or tile adhesive, thus affecting the bonding strength during construction

As a result, the mosaic is easy to fall off from the wall or building, especially when the exterior wall decoration of high-rise buildings is prone to safety hazards

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