Particle size and hydrolysis resistance: The stability of the emulsion is closely related to the particle size and hydrolysis resistance of the polyurethane particles. The smaller the particle size, the better the stability of the emulsion. The poor hydrolysis resistance will cause the emulsion to degrade slowly during the storage process, produce carboxyl group, reduce pH value, and make the emulsion condense. Degree of neutralization: The degree of neutralization refers to the degree of reaction between the neutralizer and the carboxyl group. With the increase of the neutralization degree, the particle size of the emulsion decreases and the viscosity increases, which is helpful to improve the stability of the emulsion. However, too high a degree of neutralization will cause the viscosity of the emulsion to be too high, but reduce the stability. PH value: Fluctuations in pH value can affect the stability of the emulsion. An acidic or alkaline environment will cause the emulsion to coagulate. Therefore, controlling the right pH range is essential to maintain the stability of the emulsion. Storage conditions: High and low temperatures should be avoided during storage, as these conditions will cause the emulsion to condense and affect its stability. Solid content and drying speed: The low solid content of waterborne polyurethane will lead to increased drying and transportation costs, and the drying speed is slow, affecting its stability. In addition, the increase of solid content and crosslinking degree will also reduce the storage stability of the emulsion. Methods to improve the stability of waterborne polyurethane emulsions include: Particle size control: By adjusting the preparation process, the particle size of polyurethane particles is controlled within a reasonable range to improve the stability of the emulsion. Optimize neutralization: Adjust the amount of neutralizer according to the specific application needs to achieve the best emulsion stability and use effect. Adjust the pH value: During storage and use, the pH value is regularly tested and adjusted to keep it within the appropriate range to prevent the emulsion from condensing. Improve storage conditions: Avoid high and low temperature environments to ensure that the emulsion is stored and used at the appropriate temperature. Improve the solid content and drying speed: By improving the production process, improve the solid content, and optimize the drying conditions to improve the stability and use efficiency of the emulsion. Anhui Sinograce Chemical Co., Ltd. to do waterborne polyurethane. We have water based polyurethane for leather, water borne polyurethane for coatings, water based polyurethane for adhesives, waterborne polyurethane for inks, and various types of water based pu resins. Welcome to consult.

Acrylic emulsion has been widely used in various fields of coating industry because of its diversity, versatility and weather resistance.Waterborne acrylic emulsion is the emulsion polymerization of vinyl monomer based on acrylic monomer. In the polymerization process, emulsifier, stabilizer, pH regulator and other additives are added, and the system is complicated Sinograce Chemical launched a series of water-based acrylic emulsion, good physical properties, low VOC in line with the needs of social environmental protection development. Now, the application of water-based acrylic emulsion has been extended to the field of industrial use with higher performance requirements. The composition of water-based acrylic resin is a problem to be considered in the formulation of water-based acrylic emulsion. Therefore, the choice of emulsion raw materials is the most important decision for engineers when preparing water-based paint formulas. The main properties of the coating are determined by the resin.Water-based acrylic emulsion, including polystyrene-acrylic emulsion variety, the market is mixed. The different composition of water-based acrylate resin has great influence on the film-forming property and cost of water-based paint. The composition of water-based acrylic resin is a problem to be considered in the formulation of water-based acrylic emulsion. Therefore, the choice of emulsion raw materials is the most important decision for engineers when preparing water-based paint formulas. The main properties of the coating are determined by the resin. Water-based acrylic emulsion, including polystyrene-acrylic emulsion variety, the market is mixed. The different composition of water-based acrylate resin has great influence on the film-forming property and cost of water-based paint. On the market, the choice of water-based acrylic resin manufacturers of monomers is very much, not only can change its type, but also can change the relative proportion and composition. When choosing water-based acrylic emulsion, water-based coating manufacturers can not only consider the empty concept words "pure acrylic" or "styrene acrylic", and should be measured by the practical performance of water-based acrylic resin and its formulation. SinograceChemical production water-based glue, water-based acrylic resin, water-based acrylic emulsion, water-based resin, water-based glue, welcome to communicate with us.

Water-based adhesives for more sustainable bonding Water-based adhesives are an excellent alternative to solvent-based systems because they do not contain any volatile organic compounds (VOCs), are lighter in weight, and generally require less product to form a lasting bond. Compared to other solutions, water-based adhesive systems are environmentally friendly, have low VOC content and are more user friendly. The use of water-based adhesives does not require as many safety measures as systems containing solvents, which can increase efficiency depending on the nature of the project. In addition, the finished products bonded using water-based adhesives are user-friendly: Water-based adhesives do not pose a large health risk, nor do they release toxic or odorous fumes. Types of water-based adhesive systems The trend of adhesives is strong water based. Water-based glue systems can be roughly divided into two categories: emulsion, dispersion adhesive, solution adhesive. 01 Aqueous adhesive Solution adhesive is the most traditional form of water-based adhesive system. They use water as a carrier substance and solidify as the water evaporates. These water-based adhesives are made using natural and synthetic polymers that dissolve in water. Uses for these water-based glue systems include paper adhesives and wettable glues, such as those found in envelopes, stamps and labels. Application: roller, spray and bead Bonding: Wet bonding Examples: starch/dextrin adhesives for paper applications such as book binding, and protein/casein adhesives for the food packaging industry. 02 Water-based emulsion and dispersing adhesive Water-based adhesives are mainly used for food packaging lamination. Aqueous adhesive emulsions and dispersion systems are multiphase mixtures consisting of liquid or solid polymer phases dispersed in the water phase. These water-based adhesives can be made using a variety of polymers, including PVA (vinyl acetate polymer), PVAC (vinyl acetate copolymer) and acrylic acid, as well as synthetic elastomers such as PUR (polyurethane). Like other water-based adhesives, dispersion adhesives and emulsions can also be cleaned with water. However, after the water-based glue dries, it is no longer water-dispersed, and cleaning residues may require the use of solvents and cleaners. Construction method: spray, brush, roll or ball. Bonding: wet bonding or dry bonding (water-based contact adhesive) Examples: vinyl acetate adhesives for bonding paper, wood, and cardboard, rubber latex water-based adhesives for fabrics and wood. Polyacrylate emulsions as water-based building adhesives, laminate adhesives, pressure-sensitive water-based adhesives and water-based polyurethane adhesives as dispersions and emulsions for the packaging and footwear industries. Bonding method of water-based adhesive Another way to classify water-based adhesives is by the way they form a bond. The two groups are wet bonding and dry bonding (water-based contact adhesives). 01 Wet bo...

1. The role of acrylic resin in UV-curable inks. Due to the unsaturated nature of acrylic resin, it can undergo polymerization under the action of ultraviolet light and is widely used in the manufacture of UV-curable inks. It can also be copolymerized with other substances, such as polyethers, polyurethanes, polyesters, epoxy resins, modified epoxy resins, polycaprolactams, etc., and all these copolymers can be used as resin components for UV-curable inks. 2. The role of acrylic resin in water-based inks. Copolymers of acrylic resin with other substances are used in alkali-soluble water-based inks, and acrylic resin copolymer emulsions are used in water-dispersible water-based inks. 3. The role of acrylic resins in solvent-based inks. Most acrylic resins are soluble in solvents such as aromatic hydrocarbons and esters, and some are also soluble in alcohol solvents. They are mainly used in the production of photogravure inks and flexographic inks. Due to their transparent and colorless characteristics, they are also used to produce varnishes.