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Development Trend of China's adhesive application
Class:News   Date:2012-9-21 11:57:45
Since the adhesive has or can achieve the same kind of connecting dissimilar material joints without stress concentration, high bonding strength, easy to realize the advantages of automation compounds, widely used in various fields of national economy, it has become an integral part of national economic development chemical products. The rapid development of the national economy for the development of adhesive industry has provided a broad space, so China's adhesive industry has been developing rapidly. According to China Adhesives Industry Association statistics, in 2005 - - 2009 China Adhesives & Sealants output and sales reached an annual average growth rate of 12.2% and 19.6%, and the forecast is "five-second" period will remain high average annual rate of growth, production and sales were 10% and 12%, wherein the reactive adhesive growth rates were 12.5% ​​14.9%. China's adhesive industry, in addition to production and sales continued to grow rapidly, the adhesive technical level is also rising, developed a lot of products at home and abroad to achieve the advanced level, and showing products in a modified type, reaction type, multi-functional, nanometer other direction, toward the field of application development trends of new energy, environmental protection and other emerging industries focused.
1. New energy field with plastic
(1) wind power glue
Due to lack of global fossil energy resources, the use of renewable energy in the world to get the government's attention and support. Wind energy as a very important renewable resources have been increasingly employed, the main form of use of wind power. In recent years, global wind power industry is developing rapidly, according to the Global Wind Energy Council and the China Renewable Energy Association Commission statistics, from 2005 to 2010 the world's new wind power installed capacity average annual rate of 29.2%, China's new wind power capacity in the average growth rate of 95.5%, the growth rate much higher than the global average. According to "China Wind Power Report 2010" predicts that by 2020 China's total wind power installed capacity will reach 230 million KW.
The rapid development of China's wind power industry provides a blade with epoxy structural adhesive and epoxy resin applications huge market space. Epoxy resin is the production of blades and blade mold host material, epoxy structural adhesive for bonding wind turbine blades on the housing and the lower housing. At present, the vast majority of 1.5MW wind turbine models, each unit requires three blades, each blade epoxy structural adhesive in an amount of about 0.35 tons, the amount of epoxy resin is about 2 tons. If by 2020 China's total wind power installed capacity reached 230 million KW, KW, epoxy structural adhesive epoxy resin demand and need new wind power installed capacity of about 188 million, respectively, 13.1 million tons and 750,000 tons, respectively, the output value of 65 billion and $ 26.25 billion. In 2010, China's newly installed capacity 16500MW as the base in 2020 to reach a total installed capacity of 230 million KW, average annual growth rate of less than 5%, the actual growth rate may be higher.
Due to the requirements of the wind blade life of more than 20 years, high epoxy structural adhesives and epoxy resin requirements, it must have good physical properties but also has good durability. Therefore, these products before the formal application through the international authority of the Germanischer Lloyd Certification (GL certification) and test and validate users, with high barriers to entry. Development Trend of wind turbine development is toward large, 2.5MW and 3.0MW model has been developed, 5.0MW and 6.0MW models are also developed process, the blade will be structural adhesives and matrix resins, higher requirements or new requirements.
(2) solar power glue
Solar energy is clean, safe and reliable renewable energy. Relative to other energy sources, solar power stations and hydropower, nuclear power and other construction geographically less demanding, and time and cost are relatively low, the future is promising renewable energy around the world are seeking to develop solar energy electricity. Over the past five years, the global solar cell production average annual growth rate of 50-60% in the next few years, the average growth rate will be maintained at 20-25%. According to forecasts of the European Joint Research Centre, will supply solar power in 2030, the world's total electricity more than 10%. China's solar power almost from the start of 2000, but the development speed is very fast, in 2000-2010 the average annual growth rate of 143.6% in 2010, solar cell production reached 8000MW, the world's solar cell production superpower, about the world 50% of the total.
With plastic solar cells is mainly epoxy structural adhesive, EVA film, silicone rubber. Cutting epoxy structural adhesive for silicon solar cells, and its intensity, high stress and process requirements; EVA film for solar cell module assembly, the monocrystalline silicon cells and silicon wafers and glass panels back or thin film batteries and back glass panels are assembled adhesive film, its strength, light resistance, weather resistance, water vapor permeability demanding; the silicone gel used in solar module junction box potting and sealing the border, on the border sealing requirements weatherability and water vapor permeability, junction box potting requirements for electrical and thermal conductivity. Estimated 2010 volume of plastic solar cells are as follows: epoxy structural adhesive 315 tons (wafer production of about 10GW), EVA film 56,000 tons, 12,000 tons of silicone rubber, respectively, the output value of 85 million, 840 million and 2.24 billion .
Since the solar cell on the life and safety requirements, the adhesives used in solar through IEC 61215 authority: 2005 standard certification and UL certification. In addition, how to improve the EVA film transmittance or use of higher film transmittance new materials to improve the conversion efficiency of solar cells, the introduction of new alternative to silicone rubber sealant to improve production efficiency of solar cells, solar cell are the key research topics adhesive.

       2. The field of energy saving with plastic
(1) Plastic Packaging plastic composite materials
Plastic packaging composite materials with adhesive layers of different characteristics of the film bonded into a unitary plastic packaging materials, packaging materials, composite materials by different thin film is formed to have moisture, light, resistant to cooking, corrosion resistance, and low cost is widely used in various foods, beverages, medicines, daily necessities and medical supplies packaging. Our plastic packaging composites huge market for packaging materials composite adhesive polyurethane adhesive mainly reported production in 2009 reached 215,000 tons, compared with 2008 growth of 26.5%. But polyurethane adhesive currently used by almost all solvent-based products, the presence of solvent emissions, energy consumption, solvent residue and security risks and other issues in the production, transportation and use.
Solvent-free polyurethane adhesive completely solves the problems of solvent-based products, are energy-saving environmentally friendly products. Since the 1980s, Europe and other developed countries have begun extensive use of solvent-free adhesive, the new production line with plastic composite volume are almost solvent-free adhesive. Our solvent-free composite technology started late, with the proportion of the total accounted adhesive solvent-free laminating adhesive is still very low. In recent years, as the country's emphasis on environmental protection, safety, health and higher and higher, as well as producers and users of environmental protection, safety, health awareness, solvent-free polyurethane adhesive application significantly expanded the amount estimated in 2010 1100 tons, compared with 2009 increased by 30%. With the improvement of the government's energy conservation requirements, the implementation of the new national standard GB / T 10004-2008 composite packaging material limits the total amount of residual solvent, more and more users requires products meet US Food and Drug Administration 21FDA CFR170-178 regulations and EU 2002/72 / EC Directive, coupled with solvent-free adhesives and composite equipment localization, accelerated solvent-free adhesive promotional rate of growth in the coming years solvent-free polyurethane adhesive market demand will be more fast, eventually completely replace solvent-free products.
(2) lightweight car with plastic
Our country is automobile production and consumption power, from 2005 to 2010 the average growth rate of China's car sales reached 24.4% in 2009, China's automobile production and sales both exceeded 13 million, becoming the world's first auto producer and consumer countries in the future few years will maintain 10% growth rate. Our rapid development of automobile industry at the same time, energy and environmental faces increasing pressure. Therefore, more and more automotive lightweight government attention and encouragement, become the main direction of China's automobile industry. With the process of advancing automotive lightweight, aluminum, magnesium, ceramic, plastic, glass fiber or carbon fiber composites and other lightweight materials in the car more and more, most of these materials can not be welded, riveted and other conventional connector process, need to use structural adhesive bonding. At the same time, increase the application of FRP components in the car, also increased the demand for the matrix resin. According to China Association of Automobile Manufacturers statistics, in 2010 China's automobile production was 1,800 units, automotive adhesive amount of about 157,000 tons, which is about the amount of adhesive structural adhesive 111,000 tons. With the development of lightweight automotive technology, automotive structural adhesive will be significantly higher than the amount of growth in vehicle production growth, structural adhesives provided a broad space in the field of automotive applications. Of course, not only the demand for automotive lightweight adhesive is increased, but also on the adhesive raised higher requirements, such as new engineering plastics, high bonding strength of the composite, weather resistance and good fatigue resistance and other requirements.
(3) energy-efficient buildings with plastic
Because FRP materials have many advantages, such as having good can design, mechanical properties, decorative, translucent, heat insulation, sound insulation, electrical properties, chemical resistance, in the construction industry makes extensive use of glass fiber reinforced plastic material , it can be used as load-bearing structures, but also can be used as auxiliary structure or decoration materials, to reduce the weight of buildings, and improve the function of the building, architectural design reform, accelerate the construction schedule, reduce project cost, improve economic efficiency and energy conservation and environmental protection They are very favorable.
Manufacturing FRP material requires a lot of epoxy resin, and application of FRP materials also requires a lot of epoxy structural adhesive bonding. Estimated 2010 epoxy adhesive construction demand is 1.2 million tons, in 2014 demand will reach 16,000 tons, of which construction reinforced with plastic 2800 tons. In addition, with other new design and new composite materials in construction applications, the demand will continue to increase in structural adhesive.
(4) water treatment equipment with plastic
Water is one of the key issues of environmental protection, water treatment technology has been a great emphasis on ultrafiltration membrane water purification technology is a major innovation of technology, compared with other water treatment technology, high efficiency, good effect, low energy consumption, is an environmentally friendly energy-saving both new technologies. Ultrafiltration membrane water purification equipment is widely used in drinking water treatment, desalination, wastewater reuse, pharmaceutical, food, beverage, biotechnology and other fields. The core technology of water purification equipment ultrafiltration membrane ultrafiltration membrane is prepared, in addition to ultra-membrane filter capping technology is also very crucial. Currently capped resin ultrafiltration membrane water purification equipment mainly for the epoxy resin, epoxy resin, high strength, good sealing performance and technology is good. Estimated 2010 domestic water purification equipment ultrafiltration membrane casting resin used in an amount of about 3750 tons. China Film Industry Association estimated based on 2010 to 2015 domestic ultrafiltration membrane will yield 20% to 25% growth rate in 2015 ultrafiltration membrane water purification equipment casting resin demand will reach 9150 tons.
3. Other areas with plastic
In addition to these new energy saving and environmental protection, aerospace, insulation materials, handicrafts and other glass steel products manufacturing and also epoxy structural adhesive epoxy resin has a great demand. Related statistics show that China's next 20 years in aerospace with epoxy structural adhesive demand of 4,000 tons in 2015, an insulating material with a matrix resin will reach 8500 tons, 2014 Crafts for producing matrix resin can reach 4,000 tons, other FRP materials matrix resin with about 700,000 tons.