Although water-based coatings are currently being used more and more widely, there are still some problems to be optimized and addressed, such as long film-forming time, moderate sensitivity to ambient temperature, low solids content relative to conventional solvent-based coatings, Water dispersion coating for a long time storage difficulties.

As the surface tension of sleep is higher, the construction of water-based paint is different from the solvent-based coating, the substrate surface cleanliness, construction environment, high temperature and humidity requirements, through the formulation of technical improvements and the adjustment of the construction process to solve The

Water-based paint also need to solve the contradiction between the hydrophilicity and water resistance of the coating. Water-based coating film containing a large number of hydrophilic groups and hydrophilic substances, if not converted or treated, will inevitably affect the water resistance of the coating, the water resistance if the rain-based coating, which is water-based paint in the use of Subject to the constraints of the main factors.

Most waterborne resins are present in the form of water emulsified or water dispersible, and the gloss and fullness of the film after film formation are not as good as solvent-based coatings, which makes most of the aqueous coatings unusable in applications requiring high gloss coatings.

In addition, some water-soluble paints and adjuvants are still required in some water-based paints. Some solvents or cosolvents are more toxic and more harmful to the body than the solvents used in the solvent-based coatings. Big. Therefore, environmental protection, health and safety is still the future of water-based paint research and development, production and development process should pay attention to the problem.