The future of environmental protection coatings market powder coatings can be out of the air to laugh Aojiang Lake

Paint industry:
powder coating is 100% solid content, zero VOC "4E" coating, since the date of its birth is recognized as environmentally friendly coatings and quickly on a number of traditional industrial areas solvent-based coating to achieve subversive industrial replacement, from traditional furniture, home appliances, aluminum profiles, transportation, energy and other industries to the shipbuilding industry, marine engineering and pipeline industry, have achieved good results. Powder coating requirements for the environment is low, can use fluidized bed, static electricity, rolling coating, spray coating, flame and other coating methods, over-sprayed powder can be 100% recycled, coating performance is excellent, is the rapid development of low VOC coating.
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powder coatings main application areas
powder coatings because of its outstanding environmental advantages, the application of a wide range of applications, including building aluminum profiles, heating (heating) and heavy corrosion protection (oil pipelines, fire pipes, water pipes, bridges Corruption, high-speed rail, mining pipes, etc.), household appliances, automobiles, agricultural machinery, bicycles, metal furniture, anti-theft doors, guardrails, electronic appliances, in home appliances, construction aluminum profiles, metal furniture and other fields of powder coatings are widely used
Chin china
With the progress of raw materials, coating equipment and process technology, the application space of powder coatings is constantly expanding.
1.1 Construction, home appliances and furniture industry in the construction metal profiles, aluminum profiles accounted for more than 80%, referring to the forward-looking industry research institute "China Aluminum profile industry market demand forecast and investment analysis report" collated data show that in June 2017 China's aluminum production of 5.884 million t, up 13% YoY, January-June cumulative output of 30.25 million t, the world's largest producer of aluminum profiles. Building aluminum profiles, aluminum ceilings, aluminum doors and windows, aluminum curtain wall, aluminum plastic plate, aluminum buckle plate, etc. are basically powder coating. Construction aluminum profiles dedicated powder coatings need to have excellent weather resistance and decorative, while meeting environmental requirements.
fluorocarbon powder coating has excellent weather resistance, to meet the AAMA2605 standard, can ensure that aluminum profiles more than 20a weather protection, is the best choice for ultra-weathering environmental protection coating. With the maturity of vacuum thermal transfer technology, thermal transfer powder coating can change metal into "wood" or "stainless steel" through transfer technology, thermal transfer technology in aluminum profiles, anti-theft doors, furniture on the successful application of "transfer powder" to form an important branch of powder coating. In the "aluminum wood, return to nature" under the background of health, environmental protection, energy saving, more and more aluminum profile surface for wood transfer surface treatment, through the Qualideco certification of "aluminum profile transfer powder" can be applied to aluminum doors and windows, curtain wall these requirements of ultra-weathering buildings, and make the building closer to nature.
powder spraying with its bright colors, rugged characteristics of today's metal furniture has become the most environmentally friendly standard spraying technology, in recent years due to the shortage of wood resources, aluminum furniture came into being. By wood transfer technology treatment and production of all-aluminum office furniture, outdoor furniture and storage furniture (such as wardrobes, cabinets, etc.) surface realistic purple sandalwood, oak, walnuts and other wood natural color, to achieve green home life, zero formaldehyde, zero pollution, beautiful durable and recyclable.
the amount of powder used in household appliances accounts for about 60% of the total amount of powder coating, powder coating with its colorful, durable characteristics occupy most of the home appliances coating (such as refrigerators, washing machines, air conditioners, microwave ovens, kitchenware, etc.) market.
1.2 pipelines, pipes, valves industry
buried oil pipelines, natural gas pipelines, pipelines are in extremely complex corrosion environment, its corrosion protection is extremely important, usually requires more than 50a protection life. The successful application of fused epoxy powder coating (FBE) to the pipeline industry in the 1960s led to a qualitative leap forward in pipeline protection technology. By heating, FBE melts and binds to metal substrates with excellent adhesion, low oxygen permeability, resistance to microbial corrosion, cathode shielding, hard wear resistance, smooth coating surface and excellent corrosion resistance, especially for harsh environments such as high salt, high alkali soil and high salty seawater and extremely hot desert areas. FBE pipeline corrosion protection has formed a complete highly automated coating process, in developed countries, more than 50% of pipeline operators choose FBE coating, such as the U.S. pipeline, gas pipeline and pipeline internal and external protection of 40% to 50% The project uses an FBE coating; British Gas has been using FBE since 1977 and has designated the coating as a corrosion-resistant coating material for all submarine pipelines; and oil and gas pipelines in Europe and the Middle East are mainly made of 3PE anti-corrosion layers (the bottom coating is FBE). Drawing on the experience of developed countries, China's large and medium-sized pipelines, gas pipelines and pipelines also basically use 3PE anti-corrosion layer and FBE, China's 4000km "West-East Gas Transmission" a large number of FBE powder, the amount of 15,000 t. Britain, the United States and many other Western countries have successfully applied FBE to the internal coating of water pipelines, the Saudi national pipeline has been used more than 30a, the coating is still intact; FBE and thermoplastic polyethylene powder coating (PE powder) is the internal and external anti-corrosion coating specified in the CJ/T120-2016 "Water Coating Composite Steel Tube" standard, and the anti-corrosion in the water transfer pipeline of the South-North Water Transfer Project uses FBE coating technology extensively. Not only does it meet the standard for transporting drinking water, but it also guarantees long-lasting corrosion protection of more than 50a, double-layer FBE technology is used in pipeline crossing technology to provide resistance to sand and gravel soil during pipeline crossing, and the history of FBE and polyethylene powder coatings in submarine pipeline technology is nearly 50a.
table 1 provides a comparison of the performance of the three most common coatings in the piping industry.
data from the table show that FBE performs better than solvent-free epoxy coatings and even slightly better than solvent-free polyurethane coatings.
1 3 kinds of external anti-corrosion coating performance comparison
1.3 rebar
rebar is an indispensable basic material for construction work, the service life of rebar determines the life of the building. FBE coated rebar technology began in the United States, the United States has tested 56 coating materials, the final selection of epoxy powder coating, the coating is not only excellent corrosion resistance, but also epoxy coated rebar and concrete anchoring force reduction of less than 10%, is the smallest of all types of coating materials. In 1913, FBE-coated rebar was successfully used in the construction of the Pennsylvania Bridge, more than double the expected service life, and powder coatings have since entered the construction field. Compared with other anti-corrosion methods, rebar powder coating is the most effective anti-corrosion material for concrete structures. Foreign information shows that the concrete components of the LPG terminal building are all protected by powder coating, the service life increased from 30a to 50a, the contribution to the durability of the project is very prominent, the total cost increased by only about 1% to 3%.
FBE-coated rebar corrosion protection has become the road bridge, seaport terminal, tunnel, chemical plant and other construction projects in the preferred anti-corrosion process. At present, epoxy-coated rebar automatic coating technology is quite mature, about two-thirds of bridges in the United States using epoxy powder-coated rebar, Thailand, Singapore, Malaysia and Saudi Arabia and other countries require that the rebar used in construction projects must be protected by powder coating. In recent years, China's sea bridges, coastal engineering starts continue to grow, the demand for coated rebar will be more and more, FBE coated rebar powder coating is also increasing.
1.4 steel strands
steel strands (also known as steel cables) are load-heavy structural materials of bridge buildings, which require very high anti-corrosion and salt spray resistance (especially coastal or cross-sea bridges) and require a salt mist test of 3000h. The University of Texas conducted a comprehensive investigation on the oblique cable corrosion protection system, and the results showed that galvanized steel strands, internal coatings and HDPE casings were perfect corrosion protection systems, which had unique advantages in the highly corrosive, especially marine climate, while the galvanizing process had serious environmental pollution.
Epoxy powder coating pre-stressed steel strands as a new type of pre-stressed material with its excellent corrosion resistance in bridge engineering has been a large number of applications, such as oblique cable, in vitro cable, in vivo rope, boom rope, tie rope, geodetic anchor rope and anchor pre-stress rope, etc. , using epoxy powder coating technology to provide long-lasting protection, salt spray test corrosion resistance is much greater than the galvanized layer, is the relatively high temperature of chloride or salt content of the environment anti-corrosion material. In the opinion collected by the University of Texas, the epoxy powder steel strand system scored second only to the galvanized steel strand system. Epoxy powder steel strand corrosion resistance is significantly better than galvanized steel strand, can improve the life of buildings by 3 to 6 times, this is a new field of powder coating technology, can be applied to urban bridges, ports, docks and other coastal areas in the humid environment of seawater erosion of oblique cables, slings and other preshoot engineering structures;
steel strand FBE coating process has been automated coating, coating epoxy powder of the new anti-corrosion steel strand with the same strength characteristics as the master steel strand, is currently the first choice in the field of anti-corrosion presysposing engineering. The United States has a special epoxy coated steel strand standard ASTMA882/A882M-2004. According to my steel network "China's pre-stressed steel strand market overview and outlook" shows that in 2016 China has a total of long-term stable steel strand manufacturers about 42, strand production line about 200, the annual design capacity of about 6 million t, the actual annual output of steel strands about 4.5 million t, of which oxide-coated steel strands (steel bars) according to 20%, its output of 900,000 t. And per ton of epoxy-coated steel strands (rebar) need to use epoxy powder coating about 50 to 70 kg, meaning that china's annual demand in this field of more than 40,000 t epoxy powder coating. With the application ratio of FBE coated steel strands increasing rapidly year by year, powder coatings will also usher in tremendous growth in the steel strand market.
1.5 Other industries
transportation industry (e.g. highway railings, protective nets, moving cars, high-speed rails, locomotive interior trim panels, beacons, electronic control cabinets), motors, coils, transformers used in the electronics and IT industries Electronic components, power distribution cabinets, computer chassis, switches, sports equipment, fitness equipment, vending machines, strollers, hardware, power tools, as well as some emerging industries such as shared bicycles, mobai bicycles, courier boxes, etc. are all powder coating.
City Dividing Line, Earth Hour
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Opportunities for Powder Coatings in VOC Treatment in Seven Key Industries
The "13th Five-Year Plan" issued by the Ministry of Environmental Protection requires all enterprises in seven key industries to prevent and control volatile organic matter pollution
All should implement VOC comprehensive management, VOC total emission reduction requirements: container manufacturing enterprises VOC comprehensive removal efficiency of more than 80%, automobile, coil manufacturing enterprises reached more than 70%, furniture manufacturing enterprises reached more than 50%, construction machinery, ships, steel structure manufacturing enterprises reached more than 30%. These present new opportunities for powder coatings.
2.1 Container Coatings Market
Container market is very concentrated, according to the China Container Association statistics, THEC Group is the world's largest, accounting for 50% of the global container market, the second is Shengshi container, the global market share of 25%, China's container accounted for 95% of the world's total output. According to the "2016-2022 China Container Leasing Market Development Status and 13th Five-Year Development Trends Forward Report" released by China Reporting Network, the world's container storage volume in 2016 about 40 million TGUs, each container life of about 15a, with 9 to 10a, it will need to be repaired, the annual container replacement rate of about 2.2 million to 3 million TGS, resulting in huge potential for the growth of the paint market.
because containers are often mobile, repeatedly experiencing the whole process from land to sea, from the heat to the cold, so container corrosion protection requirements are very high. Since the birth of the international standard container in 1962, solvent-based coatings have been the main coating in the container manufacturing industry, accounting for about 95%, mainly using three layers of paint supporting system anti-corrosion, primer for solvent-based epoxy zinc-rich paint, paint for chlorinated rubber anti-corrosion, there is VOC emission pollution, and chlorinated rubber resin in the manufacturing process will release CCl4, damage the ozone layer. To this end, the China Container Industry Association adopted the "China Container Industry VOCs Governance Industry Self-Regulation Convention", the implementation of water-based coating, in order to achieve the VOC emission reduction target of 80%. At present, container water-based coatings still have technical difficulties, in environmental protection, there are exhaust gases, waste water, waste residue needs further treatment, which may bring high costs difficult to accept, so the "oil-to-water" road is still long and arduous.
containers are large and require internal and external spraying, changes in spraying methods will be limited by the complexity of pre-treatment. Nevertheless, the use of water-based, high-curing and powder coatings is the future direction of container coatings. DuPont has actively promoted the application of powder coating technology in containers and will provide more options for the container coating market in the future. At present, high-energy infrared technology has realized the baking curing of large-scale work parts, with the application of more advanced coating technology and the progress of powder technology, container powder coating is not impossible.
2.2 Automotive Coatings Market
Automotive manufacturing industry is one of the largest users of coatings, each time VOC emissions significantly reduced is related to the use of new coatings, such as the introduction of high solid sub-coatings in the early 1980s, water-based coatings in the late 1980s, powder coatings began to be used in the automotive industry in the 1990s. "High infrared" heating technology is used in the curing of powder coatings, making the flatness and gloss of powder coatings comparable to liquid coatings, and can be used in car varnishes and mask glossy paints, thus revolutionizing the coating process.
In the passenger car sector, powder coating technology has been certified by companies such as Chrysler, General Motors, PSA, BMW, SWART and Ferrari, and in the commercial vehicle sector, VOLVO, SCANIA, IVECO, TATA and Rye United trucks are now produced using powder coating technology. The application of Chinese powder coatings in automobiles mainly focuses on auto parts, such as automobile engines, car chassis, wheels, filters, joysticks, mirrors, wipers and horns, which are basically black. Domestic Jianghuai Automobile has realized the powdered spraying of the carriages, and its performance exceeds that of solvent-based coatings. With the improvement of technology and powder coating performance, it is now fully able to meet the requirements of car coating, such as: appearance decoration, weather resistance, chemical resistance, scratch resistance, UV resistance and so on. Powder coatings can be recycled throughout the spraying process, saving money. Powder varnish baking process is relatively clean, can maintain the cleanness of the oven for a long time. Powder.