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Due to the hydrophobic properties of waterborne polyurethane resin, it is difficult to dissolve in water or disperse uniformly, and the high reactivity of isocyanate groups to water, the direct synthesis of waterborne polyurethane faces many challenges. Therefore, to achieve the preparation of waterborne polyurethane, the primary strategy is to cleverly integrate hydrophilic functional groups (suc...
Paper aluminum-plastic composite film in the actual application of medical packaging powder, granule packaging products compared to the plastic aluminum-plastic packaging commonly used in the market now has the following advantages: (1)The mechanical strength of the paper is high, the rigidity is good, and the ability to maintain the bag after forming is strong, which improves the cleanliness of t...
First, what is the adhesion of resin Resin adhesion refers to the ability of the resin coating to adhere to the substrate. Insufficient adhesion of the resin on the surface can cause it to fall off or foam, and affect the service life and performance of the product. Second, how to effectively improve the adhesion of resin 1. Surface treatment Surface treatment is an effective method to improv...
Aqueous acrylic emulsion is a kind of chemical raw material with strong function and excellent performance, which is widely used in many fields such as coating, ink, textile, papermaking and waterproofing. This emulsion is mainly composed of pure acrylic monomer, which is prepared by precise copolymerization, and its non-toxic and pollution-free characteristics make it popular. I.Physica...
In the formulation of water-based paint, the choice of emulsion raw material is the most important decision for the engineer. The main properties of the paint are determined by the resin. There are a wide variety of water-based acrylate emulsions, including polystyrene-acrylate emulsions, which are mixed in the market. The different composition of water-based acrylate resin has great influence on ...
(1) The use of hydrosol Hydrosol is a polymeric dispersion of very small particles, which has the characteristics of both emulsion system and solution system, and can effectively improve water resistance (2) Reduce the amount of emulsifier Although emulsifier plays an important role in the formation of micelles in polymerization and the stability of the polymerization emulsion, it is als...
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 us...
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 emul...
The main function of the film surface coating treatment agent is to enhance the comprehensive performance of the film through chemical or physical modification. The specific functions can be summarized as follows: 1.Enhance surface adhesion Improve the adhesion of ink/adhesive: By increasing the surface energy of the film or introducing polar groups, make the ink, coating or adhesive more lik...
Box gluing adhesive, also known as sealing adhesive or box bonding adhesive, is a fine chemical product. It is mainly used in the post-printing processing and manufacturing procedures of the printing industry, such as pasting fine boxes, sealing paper boxes and handbags, automatic gluing of boxes by automatic box gluing machines, and mounting of hardcover book shells, etc. The bonding performance ...
Pressure-sensitive adhesive Pressure-sensitive adhesive is a kind of viscoelastic body that simultaneously possesses the viscous properties of liquids and the elastic properties of solids. Bonding can be achieved immediately by using finger touch pressure The purpose is to ensure a smooth surface of any adherend, so it is called Pressure-Sensitive Adhesive (PSA). The subdivision of pressure-sensit...
As the market's requirements for product packaging become increasingly stringent, various printing packaging products have placed higher demands on the adhesives they use, which has also spurred the rapid development of water-based packaging adhesives. Currently, our series of products such as box coating and paper mounting glue, water-based varnish, and paper tube varnish have received excellent ...
Introduction to Acrylic Emulsion: Acrylic emulsion is a high-molecular water-based dispersion system prepared by emulsion polymerization technology using styrene and acrylate monomers (such as methyl acrylate, ethyl acrylate, butyl acrylate, etc.). Its features include environmental friendliness (low VOC), good film-forming property, strong weather resistance, excellent adhesion, and performa...
Acrylic emulsion has extensive applications in the construction industry, mainly due to its excellent performance and diverse application scenarios. The main uses and characteristics of acrylic emulsion in construction are as follows: 1. Application Acrylic emulsion is mainly used for waterproofing, anti-corrosion and beautification treatment of building materials. Its properties enable it to be w...
Water-based ink is mainly a uniform paste composed of binders, pigments, additives and other substances. The binder is the core component of water-based ink. It not only serves to disperse colorants but is also a key factor influencing the performance of ink, determining its adhesion, water resistance, washability and solvent resistance, among other properties. There are t...
At present, water-based inks are mainly used for flexible and recessed plate printing. Among these, most of them are used in food packaging, tobacco and alcohol, pharmaceutical factories, and children's toys, occupying a considerable market share. Composition of water-based inks Water-based inks are made by compounding and grinding water-based resins, pigments, and solvents. Water-soluble resins m...
sinograce chemical
Sinograce Chemical is professional technical enterprise providing solutions of surface materials and manufacturing of raw materials. Sinograce Chemical Company is composed of R&D center, Manufacture center, Quality control department, Market center and International trade department. We have been dedicating to research on excellent paint/coating, adhesive for over 15 years. And now still conti...
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