Environmentally friendly low VOC coatings will usher in a "warm spring"

Date:

2020-05-06

It is understood that during the 13th Five-Year Plan period, the country will strengthen the control of the total amount of volatile organic compounds (VOC) and carry out coordinated emission reduction of nitrogen oxides and VOC. All companies in the seven major occupations of industrial painting, including cars, ships, containers, furniture, construction machinery, steel structure and coil making, must implement VOC induction management. Environmentally friendly low VOC coatings will usher in the "warm spring" of development, and the water-based industrial coatings will catch up with architectural coatings and appear to go hand in hand. Development Status of Waterborne Industrial Coatings Waterborne industrial coatings are mainly used in automobiles, railway vehicles, bridges, pipelines, steel structures, containers and other fields

Development Status of Waterborne Industrial Coatings

Waterborne industrial coatings are mainly used in automobiles, railway vehicles, bridges, pipelines, steel structures, containers and other fields. At present, the level of waterborne industrial coatings in China is far behind that in developed countries.

Automotive Coatings

With the rapid development of the automotive industry, the amount of automotive coatings is also increasing. In recent years, the new production lines of domestic automotive coatings are all designed with water-based coatings, and water-based coatings have become the mainstream of automotive coatings. As early as the 1960 s, developed countries such as Europe and the United States have taken the lead in using water-based electrophoretic primers. At present, more than 90% of primers have adopted water-based coatings, 88% of automobile coatings have also adopted water-based technology, and the application of water-based metal flash primer has exceeded 65%.

Railway vehicle coatings

Most of the traditional solvent-based coatings are used in body coating, which contains a large number of organic solvents, which bring inconvenience and potential safety hazards to storage, transportation and construction. At present, China's railway freight car field has successfully applied Huaguang water-based industrial coating to more than 13000 vehicles. After more than 5 years of verification, the products can fully reach the solvent-based product quality standard. The development of water-based coating system for railway passenger cars has also been completed by Huaguang Coating Company, and the on-line test after coating has been started. The localization and water-based process of coatings in the fields of motor cars, high-speed rail and rail transit has also entered the work plan of the railway general.

heavy-duty anticorrosive coating

The annual economic loss caused by metal corrosion in China accounts for about 4% of the gross national product. Such amazing loss stimulates the development of anti-corrosion coatings. The development of environmentally friendly industrial heavy-duty coatings is a high-tech project that coating experts in many developed countries are actively exploring, and it is an emerging field in China. Used in the field of heavy anti-corrosion water-based alkyd system, water-based epoxy system (epoxy mica iron coating and epoxy zinc-rich primer), water-based inorganic zinc-rich system, water-based epoxy ester system.

water-based container coatings

At present, the annual output of containers in the world exceeds 3.5 million standard containers, and the annual demand for paint is about 400000 tons, worth about 6 billion yuan. At present, most of the container coatings used in the world are solvent-based, and the environmental pollution is serious. In the face of increasingly stringent environmental protection laws, acrylic topcoat instead of chlorinated rubber topcoat and special paint for box bottom have begun to gradually advance. Water-based container coatings have begun pilot applications in China.

Support of water-based policies and regulations

Since February 1, 2015, a 4% consumption tax on coatings has been levied. In a short period of 4 months, three water-based industrial coating product standards, namely, "Water-based Polyurethane Coatings" HG/T4761-2014, "Water-based Epoxy Resin Anticorrosive Coatings" HG /T4759-2014 and "Water-based Acrylic Resin Coatings" HG/T4758-2014, organized and formulated by the National Technical Committee for Standardization of Coatings and Pigments, have been formally implemented on June 1. The industry believes that the implementation of these standards will be an important milestone in the development of waterborne industrial coatings in China.

The proportion of VOC coating products reached 60% in 2018