The future of China's exterior wall coating: water-based, functionalization and high performance

Chinese paint industry has experienced 100 years of development, exterior wall coating industry rapid development, new technology, new products emerge in endlessly, increasingly fierce market competition, and improve living standards, more and more is also high to the requirement of construction. Chinese architectural coatings industry presents three trends: water-based, functional and high-performance. To the development of waterborne. The diversification of world coating structure is developing towards reducing volatile organic compounds, one of the water-based coating is the development direction. Water-based coatings development quickly in our country, but lower pva species still accounts for a significant proportion. Improve the quality of coating, developing new varieties is an important part of the consolidation and development of waterborne coatings. Focus on research and development - vinyl acetate Acrylic acid copolymer emulsion, styrene acrylic copolymer emulsion and pure acrylic series as base material of emulsion paint, strive for in durability, workability, decorative paint film smoothness, fullness, such as a breakthrough; For more mature waterborne epoxy emulsion and waterborne polyurethane makings, should continue to study high-performance water-based paint, in order to satisfy some special requirements. To the functional development. At present, in addition to strengthen fire prevention, antivirus insect-resistant, low quality functions such as heat insulation coating of scientific research. We should also strengthen the study and solve new problems in architectural decoration. Composite technology will be an effective way to improve the various functions. ( 1) Function composite, such as elastic function and respiratory function of compound: excellent elastic emulsion with hydrophilic functional groups on the surface of modified composite shell, elasticity and moisture permeability. ( 2) Strengthen basic compound matching technology and related additives research and development and breakthrough, solve the increasingly serious acid rain corrosion problem of the building. ( 3) Composite substrate modification function, to some special properties of modification of existing base material, compound special function. Organic silicone modified acrylic, for example, weather resistance and moisture permeability of moisture curing polyurethane, the combination of double special functions. To the development of high performance. Ideal coating can not only protect and beautify the base material, also can give base material does not have special functions. Some of the new base material on the coating, which can obtain high performance effect, such as high weatherability fluorine resin coating, can obtain good effect in the construction. Compared with other synthetic resins, fluorine resin coating has excellent weather resistance, durability, and chemical resistance. Fluorine resin relatively expensive, however, is limited its application in exterior wall facing. Should attach importance to the development in terms of water soluble fluorine resin, especially fluorine resin modified with fluorine ethylene copolymer emulsion as the main body, making it a good performance, high grade, the price is acceptable quality base material, lay a foundation for the development of high performance coatings. In the study of water-borne polyurethane coatings, we should focus on product development. Polyamine can is one of the high-grade material performance. This artice not only meet the requirements of reducing pollution and energy saving, and maintain the characteristics of the polyurethane itself. In addition, the organic silicone modified acrylic resin coating has excellent weathering resistance and chemical resistance, resistant to dirty, is the important direction of architectural coatings in China. Powder coating non-toxic, safety performance is good, will also become one of the developing direction of high-grade architectural coatings.