Polyurethane, also known as polyurethane, is a polymer material that is often made into a variety of materials, such as coatings, leather, adhesives, fibers, etc., with high strength, toughness, wear resistance, oil resistance and other properties. Among them, in the coating industry, polyurethane waterproof coating, as an environmentally friendly coating, is widely used in human daily life and various industrial environments. Polyurethane waterproof coating is one of many types of coatings, and it is impossible to avoid the production and use of coatings, that is, the problem of coating blistering, in order to solve the problem of polyurethane waterproof coating foamingWater-based polyurethane defoamerIt has been developed by human beings, mainly for the defoaming of waterborne polyurethane coatings.
Application scenario diagram of waterborne polyurethane defoamer).
The problem of polyurethane coating foaming is worthy of attention and solution, because the hazards of waterborne polyurethane waterproof coating foaming may include the following aspects, firstly, the foam on the surface of the coating after the use of polyurethane coating may make the construction difficult, so that it is easy to increase the difficulty and time cost of construction. In addition, the foam will affect the performance of the coating, and the foam may occupy a certain volume, resulting in uneven coating thickness, which will affect the waterproof, impermeable and other properties of the coating. In addition, gases in the foam can adversely affect the adhesion of the coating. In addition, the appearance of foam on the surface of the polyurethane coating will affect the flatness and aesthetics of the coating, and reduce the decorative effect of the coating.
On January 8, Ms. Chen received a call from Wenzhou, Zhejiang Province, Mr. Cui, a paint manufacturer, who may add a certain dose of thickener in order to improve the viscosity of the polyurethane dispersion during production and processing. This type of additives is an active agent and has foaming properties. In addition, if the moisture in the polyurethane is not completely processed, it may cause reactions with other chemical components, resulting in a large amount of foam.
Water-based polyurethane defoamerIt is a special silicone-free defoamer composed of mineral oil, special polyether esters and dispersants, which can quickly eliminate acrylic acid emulsions, water-based polyurethane emulsions, leather coatings, leather edge oils, phenylene ethylene propylene monopropylene casein polyvinyl alcohol and other polymer substances. It does not produce surface defects or affect film-forming, which can make the product have a better appearance, and has a special effect on water-based coating systems.