Environmentally-friendly paints favored by Chinese coatings for money

Many countries have successively enacted environmental regulations that limit volatile organic solvents (VOCs). Waterborne, solvent-free, and high-solidity coatings have become an inevitable trend in the development of coatings. According to experts, China's industrial flooring coatings are basically solvent-based and solvent-free epoxy floor coatings. Solvent-based epoxy flooring coatings contain more organic solvents. These organic solvents are ranked in the production and construction phase of coatings. Into the atmosphere, pollution of the environment, while harming human health; solvent-free epoxy floor coating contains a small amount of reactive diluent, the commonly used reactive diluent is butyl epoxy propyl ether (with certain toxicity), using self-leveling construction process, coating The film thickness is 1 ~ 5mm, the cost is high and contains a small amount of volatile organic solvents.

With the increase of environmental protection regulations and people's awareness of environmental protection, waterborne epoxy floor coatings will be widely used. Research and development of waterborne epoxy industrial flooring coatings have great economic and social benefits. Water-based epoxy floor coatings have performance equivalent to solvent-borne epoxy floor coatings. Existing waterborne epoxy floor coatings can be used in production plants and office buildings in the pharmaceutical, food, textile, chemical, electronics and other industries. Floor coatings for warehouses, warehouses, and laboratories are particularly suitable for floors, basements, underground parking, and other relatively humid environments on the ground floor. As a green environmental protection product, waterborne epoxy floors must be recognized and widely used by people.

Water-based epoxy floor coating (1) Coating has high adhesion, excellent corrosion resistance and chemical resistance, high hardness, good wear resistance, and excellent electrical insulation;

(2) Using water as the dispersion medium, the odor is small, non-flammable, storage, transportation and use meet the requirements of environmental protection;

(3) There will be a small amount of moisture in the coating after curing of the water-borne epoxy floor coating, which can prevent the solvent-free epoxy flooring coating from being too dense and causing the water vapor in the concrete to be unable to be removed, resulting in blistering, deformation, and emptyness. Drums and even stripping film defects. Water-based epoxy floor coating due to the special nature of the curing makes the dried coating film with micropores, allowing water vapor penetration, thus releasing the pressure inside the concrete water vapor, so that the coating from damage, while protecting the concrete;

(4) It is easy to use, construction performance is good, construction tools can be directly cleaned with water, and construction cost can be reduced;

(5) It has a wide range of application, can be used in room temperature and humid environment, and has good recoatability to old substrates;

(6) Strong decorative, smooth surface, semi-gloss, matt and many colors to choose from.

Although the waterborne epoxy floor coating has many advantages, it is undeniable that it also has some disadvantages: the construction process and the material surface cleanliness requirements are high, because of the large surface tension of the water, dirt easily make the coating film shrinkage; Because it is a water-based paint, it is not suitable for construction in winter or low-temperature environment; the dispersion stability against strong mechanical forces is poor; for the corrosion of coating equipment, anti-corrosion lining or stainless steel materials are needed, and the equipment cost is high.

In terms of decorative coatings, the output of wood coatings in 2009 was 740,000 tons. Among them, the highest proportion of polyurethane coatings is about 70%, followed by nitro, UV, alkyd, waterborne, and polyester lacquers. Furniture nitrocellulose lacquer is being quietly replaced by waterborne coatings. It is conservatively estimated that about 100,000 tons of solvent-borne coatings will be eliminated and the aqueous system will be concentrated in acrylic one-component, UV and two-component polyurethanes. Although China's policy does not explicitly specify that solvent-based coatings cannot be used, the United States, the European Union, and Japan have all introduced regulations that restrict and prohibit the use of solvent-based wood coatings. Automotive coatings will also go waterborne. It is understood that in 2015 European automotive coatings will reach 65% waterborne, Japan will reach 63%. At present, the number of cars in China exceeds that of the United States, but only cathodic electrophoretic paints are water-based, so this market has great potential.

The requirements for the paint performance of marine paints are mainly reliability, accounting for 10% to 12% of the entire paint market. At present, there are not many suppliers in this field, and the scale of domestic enterprises is relatively small. It is conservatively estimated that the amount of coating for ocean-going freighters in 2010 will be approximately 200,000 tons, that of maintenance coatings will be approximately 150,000 tons, and that for 3 million to 4 million containers will be approximately. 35 million tons.

Powder coatings are mainly used in the home appliance industry. In 2009, China's household electrical industry exports totaled 31.324 billion U.S. dollars, a year-on-year decrease of 13.27%. However, domestic sales of home appliances have increased. In general, the growth rate of powder coating production in 2009 has increased compared with that of 2008, but it has already bid farewell to the rapid growth phase of previous years. At present, the extended time for home appliances to the countryside, powder coating space is still large, conservative estimates, home appliances to the countryside will pull the output value of the paint in more than 10 billion yuan.

According to reports, in terms of the amount of decorative paints, the average developed country's consumption per person is more than 8 liters, and in developing countries it is less than 2 liters per capita. In industrial paints, the average per capita in developed countries is more than 13 liters, and in developing countries it is less than 6 liters. China's economy is still in a period of rapid growth. In the long run, China’s coatings are “optimistic”.