water-based acrylic emulsion is good or bad how to judge?

water-based acrylic emulsion? Who knows? In order to solve this problem, Xiao Bian went to Danyang, interviewed Jiang Gong, and Jiang Gong for a day, and finally solved the problem. Now, Xiao Bian has compiled some information. I hope you can have a look and it may be helpful to you.

acrylic emulsion is prepared by emulsion polymerization of vinyl monomers, mainly acrylate monomers. In the polymerization process, emulsifiers, stabilizers, pH regulators and other additives are added, and the system is quite complex.

using different soft and hard monomers, adjusting the amount, and changing the feeding method can control the soft and hard segment distribution of polymer molecules in the emulsion particles, so as to obtain different glass transition temperature (Tg or different low film-forming temperature (MFFT) of the emulsion. The emulsifier used in the polymerization can be anionic, non-ionic or cationic, and the corresponding emulsion and the resulting paint can also be referred to as anionic, non-ionic or cationic.

only with acrylic monomer polymerization is pure acrylic emulsion, made of paint called pure acrylic water-based paint. The emulsion can be modified by adding other vinyl monomers during polymerization, for example, adding styrene to improve the hardness of the paint film and reduce the cost; introducing fluorine-containing and silicon-containing monomers to improve the surface properties of the paint film, reduce the surface free energy of the film, and improve the hydrophobicity and stain resistance. This resulted in styrene acrylic water-based paint, fluorocarbon water-based paint, silicon acrylic water-based paint and other varieties.

acrylic emulsion has good weather resistance, not easy to yellowing, high hardness and good gloss. However, its main disadvantage is poor anti-blocking, prone to hot sticky cold brittle phenomenon, high hardness, low temperature film forming is not good, it is difficult to carry out coating construction in winter.

Through self-crosslinking polymerization, soap-free polymerization, core-shell polymerization and other technologies to further improve and enhance the properties of acrylic emulsion, especially the use of core-shell technology, the emulsion particles are made into hard core soft shell or soft core hard shell structure, and even soft and hard asked multi-layer structure, in order to meet the needs of different construction and use conditions.

The above is some knowledge summarized by the editor. Those who are interested can have a look. If you want to know more about water-based acrylic emulsion, you can also contact us. Our company is very professional in water-based acrylic emulsion and hopes to help you.