Water-based room temperature crosslinking acrylic acid emulsion and preparation method thereof

Abstract

The invention provides a water-based room temperature crosslinking acrylic acid emulsion and a preparation method thereof, wherein, the water-based room temperature crosslinking acrylic acid emulsion comprises the following components by weight percent: 10-40% of methylmethacrylate, 0-40% of styrene, 0-3% of methacrylic acid, 0.5-1.5% of acrylic acid, 0.5-2% of N-hydroxylacrylamide, 1-3% of ethylmethacrylate, 1-23% of butyl methacrylate, 1-3% of emulsifier, 0.3-1% of initiator, 0.1-0.5% of sodium bicarbonate, 3-9% of neutralizer, 30-60% of water, 0.1-1% of inhibition stabilizer and 0.05-2% of crosslinking agent. In the process of polymerization, the crosslinking monomers (modified monomers) like acrylic acid, methacrylic acid and N-hydroxylacrylamide are introduced to perform carboxyl crosslinking, hydroxyl crosslinking and amido crosslinking with copolymer so that the cohesive strength, heat resistance and ageing resistance of emulsion are obviously increased and the stability of emulsion is increased; the inhibition stabilizer is used so as to prolong the service life.

Description

technical field [0001] The invention relates to the technical field of polymer emulsion polymerization, in particular to a single-component water-based film-forming substance and a preparation method thereof. Background technique [0002] Present prior art, the film-forming material that uses on the market now mainly is divided into organic solvent type, powder type and water-based three major classes, and organic solvent type mainly uses pure benzene, toluene, xylene, solvent gasoline, ester, ketone as solvent. This kind of solvent-based film-forming material uses a large amount of organic solvents, consumes a large amount of non-renewable petroleum resources, is costly, is flammable and explosive, is extremely unsafe for production and transportation, and can also cause serious environmental pollution. However, it has fast drying speed and good comprehensive performance, and is still widely used at present. [0003] The powder-type film-forming material does not contain ...

AI Technical Summary

Problems solved by technology

[0006] 1. Compared with solvents, the overall performance of the product is poor, especially in wear resistance, scratch resistance, water resistance and gloss.

[0007] 2. The hardness of the product can be improved by adding a crosslinking agent, and the wear resistance and scratch resistance can be improved, but the two components can only be added during application. According to CN1405250, the patent adds a mixture of crosslinking agents, and the retention period is 5 days