waterborne acrylic resin? How to classify? Do you know?

at present, there are some vague concepts in the society, and the water-based resin is generally called water-soluble resin. Actually, water-based resins are classified according to their appearance and can be divided into water emulsion type, water dispersion type and water solubility. Many people think that this is the same resin, but it is not, not only the appearance is different, but also the use and characteristics are very different. So, next, the new material of the small series, to give you a detailed introduction of the difference between the various types of water-based acrylic resin.

aqueous acrylic resin is generally divided into aqueous emulsion type acrylic resin and aqueous solid acrylic resin. Water-emulsion resin is prepared by adding emulsifier, while water-soluble resin is achieved by self-emulsification with hydrophilic groups on the polymer chain. Water dispersion type resin is between the two, the amount of added emulsifier and the hydrophilic group with insufficient, to rely on external forced power, such as high-speed stirring dispersion, or ultrasonic to achieve water dispersibility. Therefore, its particle size and transparency are also between the first two. Water emulsion type oily weight, generally milky white, water-soluble resin was transparent, for the molecular level dispersion of the true solution, is a nano-scale dispersion state.

acrylic resin has excellent light resistance, weather resistance, no yellowing, long-term maintain high gloss performance, and with other monomers and polymers for grafting, copolymerization and blending modification, to obtain excellent water resistance, chemical resistance, anti-pollution and corrosion resistance, widely used in coatings, adhesives, inks, textile and leather auxiliaries and many other fields.

water emulsion type acrylic resin and water-soluble (including water dispersion) acrylic resin structure is different, different performance, use is naturally different. Water emulsion type resin partial oil, completely rely on surfactant, that is, emulsifier to wrap it up, can be dispersed in water. Therefore, when they are used in conjunction with other resins and additives, how to classify special water-based acrylic resins? How to classify?

be careful not to peel off the coat by temperature, stirring power, or adsorption and reaction of external substances, and demulsification and flocculation. The water-soluble resin contains many polar groups in the molecular chain, such as hydroxyl group, carboxyl group, sulfonic acid group, amino group, amide group, methylol group, ethylene oxide group, etc. Therefore, the aqueous dispersion and the water-soluble resin have a certain polymer surface activity. According to the proportion and distribution of hydrophilic groups and hydrophobic groups, the surface activity is different, such as wetting and dispersing, emulsifying and defoaming, osmotic adsorption and so on. According to the structural properties of these water-soluble resins to choose auxiliaries and with the conditions, can make them in coatings, adhesives, textile and leather auxiliaries to find the ideal application. The application range of water emulsion resin is narrow (5-40 degrees), beyond this range, it is possible to break the emulsion. The water-soluble resin has a wide operating temperature, can withstand the test of freezing and thawing and heat resistance, and can obtain better performance and larger application fields than water emulsion. For example, the use of water-soluble resin developed water-based wood paint can be resistant to boiling water, soaked in 68-72 degrees of water, 95% medical alcohol and 4. 5% iodine salt solution in 30 days, the film intact. The hardness reaches 2H, the impact resistance is 50cm, the paint film is plump and smooth, and can be comparable to solvent-based PU paint.

1, water-based emulsion acrylic resin, generally can be seen are water-based emulsion type acrylic resin, which is often said to be acrylic emulsion. This type of product is mostly down-reacting with non-methyl acrylate monomers, so this type of resin polymerization is definitely lower than the glass transition temperature of solid acrylic resin. They have a lower TG, so in some substrate (soft) applications are not comparable to other solid acrylic resins. Especially paper, leather and other soft substrate application is the best embodiment. When they are benzylated and vinegar, they become benzene acrylic emulsion and vinegar acrylic emulsion, which is the styrene acrylic emulsion, vinegar acrylic emulsion and pure acrylic emulsion that we often see. In fact, it only refers to the addition of styrene, vinyl acetate and other monomers during emulsion polymerization, so that they have other more properties. When the reaction is carried out with pure acrylate, it is called pure acrylic resin, also called pure acrylic emulsion. The other biggest application of these resins is architectural coatings, which account for a large share of the market.

2, water-based solid acrylic resin, this kind of resin our domestic development is slow! This kind of resin is mainly produced in Germany, South Korea, Japan, Taiwan and a few other companies. Their current application is paper varnish and printing ink, and other uses are waiting for new development.

The above is the introduction brought to you by the small compilation of Sai's new materials. Friends who are interested in water-based acrylic resin can contact our company. Our company has rich experience in water-based acrylic resin and hopes to help you.