Reaction-activity-controllable acrylate emulsion and preparation method thereof

Abstract

The invention discloses reaction-activity-controllable acrylate emulsion. The reaction-activity-controllable acrylate emulsion is characterized by being prepared from, by mass, 100 parts of water, 10-40 parts of 2-ethylhexyl acrylate, 10-50 parts of methyl methacrylate, 5-25 parts of styrene, 30-50 parts of hydrophilicity unsaturated organic acid, 10-30 parts of functional monomers, 5-10 parts of emulgator and 1-3 parts of initiator. The reaction-activity-controllable acrylate emulsion has high water resistance, and activity in the reaction process can be controlled.

Description

technical field [0001] The invention relates to an architectural coating and a preparation method thereof, in particular to an acrylate emulsion with controllable reactivity and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, the types of architectural coatings are also increasing. The continuous emergence of real stone paint, sandstone paint, imitation stone paint, etc. has increased people's choices for painting the interior and exterior walls of buildings. Liquid granite, also known as water-in-water colorful paint, is a water-based environmentally friendly paint rich in granite texture that has emerged in recent years. It has a one-time spraying of natural granite texture, lifelike colors, and a high degree of simulation, so it is favored by consumers. However, the current processing of liquid granite paint usually encounters a major technical bottleneck, that is, the use of emulsion in the pain...

AI Technical Summary

Problems solved by technology

[0003] Silicone acrylic emulsion and pure acrylic emulsion have strong reactivity, so their activity is not controlled by other conditions in the chemical reaction system, so both of them have the defect of poor viscosity storage stability

This defect makes the storage stability of the coating worse, and causes the viscosity of the coating itself to be extremely unstable during storage or film formation

At the same time, due to the uncontrolled reactivity of the silicone acrylic emulsion and pure acrylic emulsion in the entire reaction system, the process of the chemical reaction becomes disordered. When the above two emulsions are added to the liquid granite coating, the coating is emulsified into a chain reaction to complete The final permeability becomes extremely poor, seriously affecting the normal use of liquid granite paint

In addition, due to the cross-linking effect of silicone in the silicone-acrylic emulsion, the film-forming property of the coating itself is poor, and it is easy to crack after film formation.

Although the pure acrylic emulsion does not have the cross-linking effect of organic silicon, its film-forming property is better, but after the pure acrylic emulsion is formulated into a liquid granite coating, its water whitening resistance is extremely poor, and it may even appear irreversible after being exposed to water, which greatly affects the normal use of the paint

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