2020-02-22
The basic principles of the following waterborne wood paint formulation design The amount of the emulsion or the aqueous dispersion is as much as possible because the material of the emulsion is mainly composed of a polymer material which is a backbone for ensuring the final film properties; The additive are as few as possible, and they can be used without being used. These additive will be present in the film in a free state after film formation, which will inevitably affect the mechanical properties of the film; The amount of pigments and fillers is preferably as small as possible, as long as the purpose is achieved, the less the better, the introduction of these materials necessarily means the introduction of grinding aids, thereby affecting the film properties. Sinograce Chemical produces water based additives, such as thickener, crosslinking agent, wetting agent.
read more2019-07-03
Classification and characteristics of waterborne coatings - waterborne light curing coatings Waterborne light curing coating is a kind of coating classified by curing method. It is a very important kind of coating.In any polymer molecule, a structure in which a reactive group capable of being decomposed by a photoinitiator or a structure capable of being excited by a high-energy radiation to produce a reactive group can be prepared as a photocurable coating or a radiation-curable coating.According to the source of light required for curing, there are ultraviolet (uV) curing coatings, visible light curing coatings and electronic (EB) beam curing coatings. The most common is UV curing.The light-curing coating has a highly crosslinked structure, excellent solvent resistance and scratch resistance, and high hardness of the paint film. It is widely used as a water-based floor paint, and can of course be used as a water-based furniture paint, water-based cabinet paint and water-based Wall paint. Sinograce Chemical produces water based coating,Water-based glue, polyurethane coating visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511
read more2019-07-02
Sol-gel coating Classification and characteristics of waterborne coatings - sol /gel coatings Sol-Gel coatings is a new type of coating that has received special attention in recent years. The progress of inorganic nanopowders has promoted the development of sol-gel coatings.The main component of the sol-gel coating is an organic resin and a silane compound, and the silane is hydrolyzed to form a sol, which is then condensed on a solid surface to form a gel.The reactive group in the silane is easily reacted with an inorganic material such as an organic resin or a silica sol, and the silane itself can be condensed into a macromolecule of a network structure to finally form a paint having high hardness, scratch resistance, solvent resistance, and water resistance. membrane.The solvent in the coating is mainly an organic solvent such as isopropyl alcohol, which contains a small amount of water. Strictly speaking, it is not a water-based paint in the true sense, but it is an environmentally-friendly paint. The newly emerging sol-gel coating for wood lacquer is a promising new variety of wood coatings. Sinograce Chemical produces water based coating,Water-based glue, polyurethane coating visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511
read more2019-06-23
Waterborne epoxy coatings are coatings in which water is the solvent or dispersion medium. Waterborne epoxy coatings include water soluble epoxy coatings and water emulsion coatings. Water-soluble coatings are often also called electrophoretic coatings, that is, the resin dissolves in water to form a uniform colloidal solution. If the resin ions are charged, the colloidal particles can be electrophoretically deposited on the surface of the workpiece under the action of direct current. According to the decentralized system, it can be divided into: 1) Water-soluble epoxy coatings Water-soluble epoxys can be further divided into water-soluble anionic resin coatings (anode electrophoretic coatings) and water-soluble cationic resin coatings (cathode electrophoretic coatings). Water-soluble curing agents such as melamine formaldehyde resin, benzoguanamine formaldehyde resin, urea-formaldehyde resin and isocyanate blocking are often used. a)The resin of the water-soluble anionic resin coating is reacted with an acid or an acid anhydride of an epoxy resin having a high hydroxyl group content, and neutralized with an amine to obtain a water-soluble anionic resin. b)The resin of the water-soluble cationic resin coating is obtained by adding an epoxy resin to an amine, introducing a semi-blocked polyisocyanate as a crosslinking agent, and finally neutralizing with an acid. 2) Water-based epoxy coatings Water-based epoxy coatings emulsify lower molecular weight epoxy resins with suitable emulsifiers and have good storage and stability. Most of the practical medium temperature curing types are water emulsion coatings. Sinograce Chemical produces water based coating,Water-based glue, polyurethane coating visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511
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