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    Although the water-based paint more and more widely used, but there are still some problems need to be optimized and solved, such as film forming time is long, is sensitive to environmental temperature, humidity, solid content is low relative to the traditional solvent coating, water emulsion and coating of some difficulties long time storage. Because the water's surface tension is higher, the way of construction is different from the solvent-based paint, water-based coatings on the substrate surface cleanliness, construction environment temperature and humidity demand is higher, need through the formulation of technical improvement and adjustment of construction technology to solve together.

    Waterborne coatings with water paint should also solve the contradiction between film hydrophilicity and water resistance. Water-based paint film forming matter contains a large number of hydrophilic group and hydrophilic substances, if not to transfer or deal with, is bound to affect the water resistance of coatings, the weak water resistance to solvent paint, the coating on the use of the main factors of constrained. Most water-based resin in the form of water emulsion type or water dispersible, film after film gloss and fullness than solvent-based coating, that make the most of the water-based coating cannot be applied to high gloss coating field.

    In addition, some coating now still need to add some water soluble solvent and additives, some of the solvent or additives compared with the solvent coating used in solvent, although the amount is small, but the toxicity is bigger, more harm to the body. Therefore, environmental protection, health and safety are still the problems that should be paid attention to in the development, production and development of waterborne coatings.

    With the progress of the society, people and the government promotion of environmental requirements, forcing the industry transformation of coatings industry, make it from traditional quality oriented to today's green, energy saving, efficient and intensive transformation. The research will focus on the stability, water resistance, film forming mechanism, solid content, low VOC value and inorganic waterborne coatings. In addition of renewable resources, such as seed oil as raw material to synthesis of water-based resin ratio will increase, the bionic, stone and other functional or decorative coating will further expand in order to further green and sustainable. In addition to replacing solvent based coatings in traditional applications, water-based coatings will further expand their market share in coatings and eventually completely replace solvent based coatings.