Emulsion with core-shell structure and environment-friendly interior wall coating containing emulsion

Abstract

The invention discloses an emulsion with a core-shell structure and an environment-friendly interior wall coating containing the emulsion. The emulsion with the core-shell structure is obtained by semi-continuous polymerization of methyl methacrylate, styrene, butyl acrylate and methacrylic acid, wherein the environment-friendly interior wall coating consists of the emulsion with the core-shell structure, titanium white powder, a filler, a dispersing agent, a wetting agent, a defoaming agent, a thickening agent, a bactericide, a mildew inhibitor, a pH regulator and water. The latex particles in the emulsion with the core-shell structure provided by the invention have a soft-shell hard-core structure, wherein soft shells can ensure that the prepared coating product also has excellent low-temperature film forming property without the addition of a film-forming auxiliary agent, and hard cores can ensure that the prepared coating product has high hardness after film formation of the coating product, does not turn soft or sticky at a high temperature, and still has the basic properties of excellent stain resistance, washing resistance and the like. The environment-friendly interior wallcoating provided by the invention does not contain volatile organic compounds (VOC), is safe and environmentally friendly, and has high hardness and excellent stain resistance and washing resistanceafter the film formation.

Description

technical field [0001] The invention relates to a core-shell structure emulsion and an environment-friendly interior wall paint containing the emulsion. Background technique [0002] Coatings have been widely used in people's lives, greatly improving people's living and working environments, and bringing huge economic benefits. At the same time, with the improvement of people's awareness of environmental protection and health, traditional solvent-based paints have been gradually replaced by water-based paints. Compared with solvent-based paints, water-based paints greatly reduce VOC. VOC can irritate human skin and eyes, damage the nervous system, hematopoietic system, and seriously endanger human health. [0003] VOC in water-based interior wall coatings mainly comes from the following three aspects: 1) Water-based interior wall coatings mainly use acrylic resin emulsions as film-forming substances, and the monomers of acrylic resin emulsions are not completely converted ...

AI Technical Summary

Problems solved by technology

However, this coating has serious drawbacks, due to the T of the coating film g It is also very low, and it tends to become soft and sticky when the temperature is high, which greatly reduces the stain resistance and scrub resistance of the product, and cannot balance environmental protection and usability well.

Conversely, if the product's T g If the temperature is increased, the minimum film-forming temperature will also increase accordingly. If you want to form a film at a lower temperature, you must add a film-forming aid, which greatly increases the VOC content in the product.

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