2024-09-27
Compared with solvent-based acrylic paint, the paint made of water-based acrylic resin has the advantages of stability, safe use, environmental protection, reducing environmental pollution and saving resources! At present, it has become an important development direction of the coating industry. The coating using water-based acrylic resin is a low-pollution or even pollution-free environmental protection coating with faster development and more varieties of water-based coatings. At present, the water-based acrylic coatings on the market are basically the following three kinds: 1 Emulsion acrylic resin coating It is made of acrylic monomer through emulsion polymerization, appearance milky white, large particle size. Advantages: Low VOC, low price, good chemical resistance Disadvantages: Luster, poor leveling, difficult to do high-grade paint. Poor stability. 2 acrylic dispersion type paint It is a solvent-based resin made of high solid and low bonding acrylic monomer, and a water-based coating made of water-based resin after amination into salt. It is generally made of two-component PU coating or baking coating. The appearance is usually translucent liquid Advantages: VOC general, fullness, luster is better. Disadvantages: relatively troublesome construction and high paint cost. 3 Water-soluble acrylic paint It is a water-based coating made of a resin synthesized by acrylic monomer in a water-soluble solvent and a water-soluble resin formed by amination into salt. Transparent yellowish liquid in appearance. Advantages: Wide molecular weight range, can be made of water-based coatings diversification. Disadvantages: high VOC, relatively poor chemical resistance. After years of research and development, Anhui Sinograce Chemical Co., Ltd.has developed an ultra-low VOC water-soluble acrylic resin, which has an extremely low odor. The VOC content is only 4.3g/kg resin (provided by a third-party testing agency), which is not only far lower than the VOC content of emulsion, but also far lower than the standard. Environmental protection is becoming increasingly severe, and it is a new choice for paint practitioners.
read more2024-09-26
Water-based resins can be divided into water-emulsion, water-dispersed and water-soluble according to their appearance. There are many people think that this is the same resin, in fact, it is not only the appearance is not the same and the use and characteristics are very different. Water-based acrylic resins are generally divided into water-based emulsion acrylic resins and water-soluble acrylic resins. Water emulsion acrylic resin VS water soluble acrylic resin 01 Water emulsion acrylic resin The water-emulsion resin is prepared by adding an emulsifier. Oily heavy, generally milky white. The water-emulsion resin is oily and completely depends on the surfactant, that is, the emulsifier, to wrap it up and disperse in water. Therefore, when they are used in combination with other resins and auxiliaries, special care should be taken that the coat is not stripped by temperature, stirring power, or adsorption and reaction of the external substance, and the emulsion is broken and flocculated. The application range is narrow (5-40 degrees), beyond this range, it is possible to break the milk. 02 Water soluble acrylic resin Water-soluble resins are achieved by self-emulsification with hydrophilic groups on the polymer chain. Most of them are transparent, true solution of molecular dispersion, and belong to nano dispersion state.、 Water-soluble resin, because it contains many polar groups on the molecular chain, such as: hydroxyl, carboxyl, sulfonic acid, amino, amide, hydroxymethyl, oxidized vinyl, etc. How do different types of acrylic resins apply? Water-emulsion acrylic resin such products mostly react with acrylic monomer without methyl, so the polymerization of this kind of resin is definitely lower than the glass transition temperature of solid acrylic resin. They have lower TG, so some substrate (soft) applications are unmatched by other solid acrylics. In particular, the application of soft substrates such as paper and leather is the best embodiment. When they are benzenized and acetated, they become styrene acrylic emulsion, vinegar acrylic emulsion, which is the styrene acrylic emulsion we often see, vinegar acrylic emulsion, pure acrylic emulsion. The other biggest application for these resins is architectural coatings, which account for a large share of the market. Water-soluble acrylic resins vary in surface activity according to the proportion and distribution of hydrophilic and hydrophobic groups, such as wetting dispersion, emulsification defoaming, osmosis and adsorption. According to the structural properties of these water-soluble resins, the selection of additives and matching conditions can make them find ideal applications in coatings, adhesives, textile and leather additives. According to your coating substrate, which acrylic resin product to use in detail can consult Sinograce chemical customer service +8615755193346 (wechat same number)
read more2024-09-21
I.Definition The emulsion is a colloidal system with a particle size of 0.1~10μm formed by two insoluble liquids through the action of emulsifier. Secondary dispersion refers to a colloidal system formed by particles (or molecular groups) less than 1μm are dispersed into a continuous phase (such as water) under the action of a stabilizer. By definition, the formation of emulsions and secondary dispersions requires a certain stabilizer or emulsifier. II. Stability Both emulsions and secondary dispersions are stabilized by stabilizers or emulsifiers to keep droplets or particles stable, but their stabilization mechanisms are slightly different. Secondary dispersions are generally more stable because they have a smaller particle size, exhibit a larger surface area in a continuous phase, and generally require fewer stabilizers. The stability of the emulsion depends on the size and distribution of the droplets, and more emulsifiers are needed to maintain stability. III. Application Fields Due to their differences in stability and composition structure, emulsions and secondary dispersions are also different in the field of application. Emulsions are usually used in cosmetics, emulsions and coatings, while secondary dispersions are more commonly used in drug delivery, nanocrystal growth, dye transport and other fields. IV. Summary In summary, the difference between emulsions and secondary dispersions is mainly reflected in their definition, stability and application field. Although they are different in the formation mechanism and application scope, they are all colloidal particle systems, and they can play a very good performance and effect in applications.
read more2024-09-21
1.Type: There are three main types of water-based acrylic resins, including emulsion, water dispersion and aqueous solution. The emulsion is synthesized by emulsifying olefins in water under the action of water-based free radical initiator. The aqueous dispersion is synthesized by free radical solution polymerization or stepwise solution polymerization. Aqueous acrylics are directly soluble in water. 2.Features: Water-based acrylic resin has excellent weather resistance, good adhesion and fast drying speed. These properties make it widely used in coatings, adhesives, printing inks and textile auxiliaries. In addition, it also has good adjustability, and can adjust its performance by diluting, toning and adding fillers to meet different application needs. 3.Advantages: The biggest advantage of water-based acrylic resin is its environmental protection, the use of water instead of organic solvents, reducing environmental pollution and harm to the human body. In addition, it also has alkali thickening effect and good stability performance, and the reasons and influencing factors of these properties are also key factors in research and production. 4.Use: Water-based acrylic resin is suitable for industrial and decorative coating, providing anti-fouling, anti-fading, anti-chalk, water resistance and other functions. When selecting water-based acrylic products, it is necessary to consider their characteristics, advantages and how to match with solvent-based acrylic products to ensure the best application effect. Sinograce Chemical manufactures a variety of water-based acrylic resin emulsions for industrial coating and architectural coatings.
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