Recently, the "Action Plan for Prevention and Control of Atmospheric Pollution" promulgated by the government mentioned the promotion of the use of water-borne paints as VOC emission control and other issues. As one of the major emission sources of VOCs, paint has been pushed to the cusp for a time. So how much paint can cause pollution? How to develop the paint industry? Recently, China National Coatings Industry Association Secretary-General Yang Yuande to promote the development of the industry put forward suggestions and opinions.
Paints urgently need to speed up the environment-friendly
Data show that in 2012 China's environmentally friendly paint usage was 47.8, Europe and the United States developed countries in the 60 - 70. 2012, China's paint production reached 12,718,750 tons, if the use of environmentally friendly paint in China can reach the level of developed countries to 67.8 calculation, Can reduce the production of solvent-based coatings is about 2.54 million tons, equivalent to 1.72 million tons to reduce VOC emissions.
VOC is one of the most important air pollution sources. The main sources are fuel combustion, industrial waste gas, automobile exhaust, petrochemical industry and so on. According to their different types of VOCs, volatile content is also different. Currently the relevant national units are VOC emissions statistics, there is no accurate data. In this regard, Yang Yuande said: Now that the coatings industry to how much contribution to the VOC has no data to support, but if you can increase the use of environmentally friendly coatings, then the improvement of the national atmosphere will play a catalytic role, for the entire Industry health, environmental protection is of great significance. .
Countries clearly put forward to promote the use of water-based paint, which is represented by water-based paint environmentally friendly paint is good news. Yang Yuande expressed optimism at the same time, that the paint in the process of friendship there are three challenges. First, technical problems to be solved. Environmentally friendly paint in the use of the scope of the usually have some limitations to water-based paint, for example, the construction of the temperature and humidity have certain requirements, some products in the appearance and texture after painting still needs to be improved, which Paint companies and government research institutes need to speed up technology research and development, but also need policy support. Second, public awareness to be improved. The current consumer acceptance of solvent-based coatings is very high, awareness of environmentally friendly coatings needs to be improved, which requires media advocacy and government guidance; Third, policy support to be strengthened. There are currently restrictions on solvent-borne coatings, but few mandatory restrictions; for environmentally friendly paint policy, are generally encouraging, but the lack of specific standards, mandatory provisions to guide.
Waterborne Wood Coatings to be government support
At present, most of our furniture is painted with solvent-based paints. The main pollutants are VOCs based on volatile solvents, which seriously pollute the atmospheric environment, endanger the health of workers and lead to fire hazards, and cause the waste of petroleum resources . Compared with this, waterborne wood coatings have the advantages of being health and environmental protection, safe use and resource saving. Although waterborne wood coatings need to be further improved in terms of water resistance, coating mechanical properties and construction techniques, as people's awareness of environmental protection continues Enhance the water-based process of China's wood coatings has been irreversible. Yang Yuande said that in 2012 China's wood coatings waterborne wood coatings usage around 3, while in Europe its utilization rate has reached 40-50, so the great potential for development.
Yang Yuande proposed to speed up the promotion of water-based wood paint from three aspects, one is to improve the solvent-based wood coatings national standards and industry standards. Currently, the relevant laws and regulations have not reached the limit of our country's solvent-based coatings. The "Plan" has already mentioned improving the limit of volatile organic compounds of paint, adhesive and other products, but there is no relevant implementation rules. In this regard, we can draw lessons from the European countries, phased, targeted to improve the solvent-based wood coatings VOC, heavy metals, benzene and xylene total, and free toluene diisocyanate TDI limit requirements. The second is at the same time modest, and gradually promote the nitro solvent-based wood coatings consumption tax collection. Nitro solvent wood coatings accounted for more than 720g / L of organic solvents, and organic solvents in the spraying process all released into the atmosphere, consuming a lot of oil resources. Third, the drying equipment for drying water-based wood coatings subsidies. Due to the humid air in the south, waterborne wood coatings are not easily dried on the furniture, and the furniture enterprises need to be equipped with water-based wood coatings drying workshops. The subsidies on drying equipment can promote the promotion of waterborne wood coatings in furniture enterprises.
In addition, some people think that the paint in the harmful substances take many years to evaporate, this, Yang Yuande said: This is entirely misunderstood, wood coatings are mainly concentrated in the coating and drying of the film-forming stage, after a month to the general ventilation Volatile finished, then live again, no harm to the human body. As for some of the common furniture harmful substances such as formaldehyde, it may take many years to evaporate, and formaldehyde is mainly present in the glue plate, adhesive, and paint a small relationship.
Paint pollution control should sparse block combination
In order to control pollution, in many places, coating companies that pollute the pollution generally adopt the administrative measures of limiting or even shutting down. The pollution control effects of such measures are immediate, but they are equal to cutting off the source of development for the enterprises, The transformation and upgrading are also not beneficial, while reducing the government's revenue, which is the worst choice. Yang Yuande suggested that the government can set up environmental protection fund special efforts to control pollution, if there is business pollution, you can charge the appropriate funds into the environmental protection fund, and give a certain period of governance, if the maturity has not yet reached the goal of governance, and then cut , Shutting down, this method of dredging can solve the source of governance funds, increase financial revenue, but also can promote the healthy development of the industry.
For the paint industry pollution control, there are many foreign countries can learn from experience. According to Yang Yuande introduction, the United States and Germany to implement a pushback method is that the government for corporate VOC emissions in the paint have a standard, if more than will be punished, and this cost will ultimately be borne by the paint manufacturers. For example, automobile manufacturers will paint manufacturers to put forward the standard of volatile organic compounds, beyond the time required to reduce the corresponding price beyond the limit will not be used, so will force paint manufacturers to produce standard paint. Yang Yuande said: The key is to introduce market mechanisms that allow the market to guide the industry to achieve a win-win situation of pollution control and industry development.