Ammonia-free low-VOC interior wall emulsion and preparation method thereof

Abstract

The invention relates to an ammonia-free low-VOC interior wall emulsion and a preparation method thereof. The invention belongs to the technical field of building coatings. The emulsion is prepared from the following components in percentage by mass: 30-55% of water, 0.5%-3% of an emulsifier, 0.1%-3% of persulfate, 0.1%-3% of tert-butyl hydroperoxide, 0.1%-3% of a reducing agent, 10%-60% of styrene, 5%-30% of butyl acrylate, 0.5%-3% of acrylic acid, 0.5%-3% of methacrylic acid, 0.1%-6% of a functional monomer I and 0.1%-6% of a functional monomer II, wherein the functional monomer I is 2-methacryloyloxyethyl phosphate, and the functional monomer II is one or a mixture of more than two of ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, 1, 3-butanediol dimethacrylate, 1, 4-butanediol dimethacrylate and allyl methacrylate. The interior wall emulsion has the advantages of no ammonia, low VOC, effective improvement of the smell, low energy consumption, consideration of theglass transition temperature and the lowest film forming temperature, and improvement of the scrubbing resistance and other performances of the emulsion.

Description

Technical field [0001] The invention belongs to the technical field of architectural coatings, and relates to an interior wall coating, in particular to an ammonia-free low-VOC interior wall emulsion and a preparation method thereof. Background technique [0002] In recent years, environmental protection issues have become the focus of people’s attention. Interior wall paints are directly applied to the inner surface of buildings or structures, which are more closely related to people’s lives or work, so the requirements are more stringent, except for the key to wall paint. Environmental protection indicators: VOC, free formaldehyde, heavy metals, and appropriate water resistance, alkali resistance and scrub resistance. Among them, the treatment of low VOC and clean odor for interior wall emulsions is mostly through extraction or distillation to remove unreacted monomers or by-products in the reaction process, although the final reaction product has very little taste and high VOC...

AI Technical Summary

Problems solved by technology

Among them, for the treatment of low VOC and deodorization of interior wall emulsion, most of them remove unreacted monomers or by-products in the reaction process through extraction or distillation. Although the final reaction product has little smell and low VOC Low, but the energy consumption in the extraction process is too large, which increases carbon emissions

On the other hand, more energy consumption is required to solve the extracted VOC and wastewater, which is not good for the environment

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