I report to you the content of three parts:
A decade review of China's UPR industry and the status of development of UPR in 2009
Two, the low-carbon economy and the emerging market of fiberglass reinforced plastic (FRP)
Three, China's wind power market and the megawatt-class FRP blades
One decade review of China's UPR industry and the status of development of UPR in 2009
One decade review of China's UPR industry and the status of development of UPR in 2009
China's UPR industry in 2009 experienced an extraordinary year, according to China UPR Industry Association preliminary statistics, the total output reached 1.53 million tons, an increase of 5.5% over the previous year. Among them, the epoxy vinyl ester resin reached 33,000 tons, an increase of 11%. The national four private enterprises Yabang, Tianhe, Futian, Huaxun, etc. reached a total of 440,000 tons, an increase of 11% over the previous year, foreign enterprises DSM, Ashland, Changxing, on the Wei, Hua Ri, Showa, etc. reached a total of 120,000 tons, an increase of 9% over the previous year. Jiangsu reached 630,000 tons, an increase of 5% over the previous year. Domestic UPR in its formation of the end of the composite materials industry, the main flow for the three major markets: UPR-based FRP (FRP) market, accounting for 55% of the total amount of resin, UPR-based artificial stone, handicrafts, buttons and other markets, accounting for 35% of the total amount of resin; UPR-based functional coatings, accounting for 10% of the total amount of resin. Table 2 from the application of regional analysis, FRP market is concentrated in Jiangsu, Shanghai, Shandong, Guangdong, Zhejiang, Hebei, Tianjin, Henan. Artificial stones, handicrafts, buttons market is concentrated in Zhejiang, Guangdong, Fujian, Shandong, Shanghai, Jiangsu, Sichuan. Functional coatings market is concentrated in Guangdong, Shanghai, Jiangsu, Zhejiang, Shandong, Hebei. 2008 the second half of the global financial crisis, had a stagnant resin sales, to October after the rapid return to growth. The national four trillion investment and ten industrial adjustment and revitalization plan, to resist the impact of the financial crisis, optimize the industrial structure, sustained growth and development is of great significance. Iron and steel, automobiles, ships, petrochemicals, textiles, light industry, non-ferrous metals, equipment manufacturing, electronic information, logistics, ten industries and FRP industry is closely related. These ten industries depend on China's urban industrialization, urban and rural integration of large-scale economic construction opportunities. This opportunity is to traditional energy saving and emission reduction, new energy development of low carbon economy as the goal of the development. FRP composites with its own innovation to win opportunities and growth points. From the international market, the global financial crisis in 2008 made Europe and the United States economy in trouble, high crude oil a drop to 50 U.S. dollars a barrel, chemical raw materials appeared in the stage of market surplus, the price is low; from the domestic point of view, the stage of the glass fiber, structural, regional out of control development, the production exceeded the annual output of more than 2 million tons, half of which is exported overseas. The financial crisis hit, exports are blocked, a large number of glass fiber "down" to the domestic, mutual price pressures. Chemical raw materials and fiber prices fell dramatically, so that the FRP composites industry to get how many years since there has never been a good time for its low-cost expansion to provide the conditions, which also led to the growth of resin.
In 2009, the UPR industry showed five major flows and hot spots: the popularity of the FRP composites industry continues to grow and improve, go hand in hand, on the one hand, pulling the expansion of low-cost, general-purpose resins, on the other hand, the development of the emerging FRP market, promoting high-performance, personalized resin growth. Reflected in the o-phenylene type winding resin, vacuum resin, SMC / BMC resin, pultrusion resin, polyester and p-phenylene modified resin in full swing. In addition, high-performance FRP composite products fan blades, electrical switches, pressure pipes, electric power components, desulfurization, high-speed trains, internal and external decorative structural components, luxury yachts, workboats, sports boats, etc., the market demand, but also to make m-phenylene-type, epoxy-vinylester-type vacuum resins, SMC / BMC resins and other rapid growth, presenting the resin market, "both ends of the hot! The resin market is "hot at both ends". Tianma, Tianjin Hetai, Feilong, Huachang, represented by the restructuring of state-owned enterprises, Yabang, Tianhe, represented by large domestic private enterprises, Huake, represented by the combination of domestic scientific and technological personnel enterprises, DSM, Huarizi, Changxing, Ashland, Showa, on behalf of the foreign-funded enterprises, in the domestic UPR arena, each leading the way, to lead the market.
The second flow and hotspot is the rapid development of cast resin. A few years ago, cast resin crafts in the face of overseas market weakness, the urgent turn to the domestic building decoration market, large quantities into the building halls and high-grade shopping malls, to achieve very obvious results. Cast artificial stone technology enhancement, has been from a wide range of large quantities of cabinets and counter panels to the mechanized molding of artificial marble and artificial quartzite panels, a large number of applications in the wall ornaments and floor materials. Fujian, Guangdong, Shandong and other places of stone enterprises have begun to shift from mining to synthetic stone manufacturing. National synthetic stone with resin, 09 output are more than the previous two years. Traditional casting products polyester buttons, atomic gray resin, mining riveting resin, etc. continue to maintain good growth momentum.
The third flow and hot spots are Jiangsu, Shanghai and Tianjin, has become the domestic UPR development in recent years is very active in the region, and technological innovation and new product development to lead the domestic UPR and its composite materials market trend, to promote the popularization of domestic UPR composite materials market and improve. 2009 UPR production in the region accounted for more than half of the country's total output, of which 95% of the production of vinyl epoxy ester resin concentrated in Shanghai. In 2009, the output of UPR in this region accounted for more than half of the national total, of which 95% of the output of epoxy vinyl ester resin was concentrated in Shanghai and Jiangsu. This region is also a dense production area for Chinese and foreign UPR enterprises, both foreign enterprises such as Huarih, DSM, Ashland, Changxing, Showa and Shangwei, which entered the region earlier, transmit the mature overseas industrial market to the domestic market and occupy the advantage of domestic high and middle end market. There are also a number of companies such as Tianma, Huachang, Yabang, Feilong, Huake, China Resources, Tianma Ruisheng, Fu Ling, Xinghe. Here we should especially mention the phenomenon of "Yabang" in the domestic UPR industry. 2009 Yabang produced 170,000 tons of resin. With the simple emotion of an industrial chain, "there is me and there is you", "there is you and there is me", close to the market and customers, vigorously develop low-cost general-purpose resins, high-performance crystal resins and stone resins, and make contributions to the industry; the output has been the first in China for five consecutive years. Yabang has been the No.1 in China for five consecutive years. Over the years, Yabang's sales companies all over the country have developed from single resin sales to "one-stop" service for raw materials used by FRP enterprises; Yabang's sales companies all over the country are also Yabang's subsidiaries, which are active in market investigation while doing good job in materials and service, and can quickly reflect the dynamics of FRP industry all over the country within 12 hours. They can quickly reflect the dynamics of the FRP industry in all parts of the country within 12 hours. Yabang grows bigger and stronger in the continuous interaction with the enterprises under the market.
The fourth flow and hotspot is the megawatt-class FRP blade high-performance requirements, accelerated UPR and epoxy vinyl ester resin technology climb. Domestic megawatt wind power market from 2007 into a period of rapid development, the average annual installed capacity of more than 600 million kilowatts, the total installed capacity in 2009 reached 20 million kilowatts. According to 1.5 MW projection, the annual blade total of 15,990 pieces, resin consumption of more than 50,000 tons, plus foreign wind power enterprises export blade with resin amount can reach more than 70,000 tons, of which 50% for the UPR and epoxy vinyl ester resin China's megawatt-grade glass fiber reinforced plastic blade patented technology is introduced from Germany and the Netherlands, the performance of fibers and resins of the high standards, and through the German Classification Society GL validation. Two "threshold", the domestic resin and fiber enterprises put forward extremely strict requirements. Foreign-funded enterprises Ashland, on the latitude, DSM companies have the conditions, "light traffic", the first domestic wind power megawatt-class blade market. Megawatt-class blade from the leaf shape design, structural design, laying into the design, mold technology to blade manufacturing is an extremely complex system engineering, blade operation period of twenty years, on the resin enterprise is a "test". Resin enterprises are "trying" megawatt-class blade market is mainly dependent on the enterprise's own technical strength. The fifth flow and hot spot is the development and improvement of domestic FRP composite materials equipment manufacturing. Jiangsu, Zhejiang, Hebei, Lu and other provinces of SMC, winding, pultrusion, artificial stone, molding and other equipment and mold design and manufacturing not only to meet domestic demand, but also X amount of exports. The improvement of equipment and technology to pull the performance of UPR, quality improvement and medium and high-grade resin demand. 2010, the domestic UPR industry still has a lot of room for development. Foreign-funded enterprises believe that China is the fastest-growing economy in the world and the largest composites market in the world, and they are confident in the development of China. DSM, Huarih, and Ashland are carrying out the layout of expanding capacity and increasing production, in addition to Reckitt Benckiser, which will be put into production in Tianjin. The country's resin production giants Yabang, Tianhe, Futian and Huaxun are all expanding.
Domestic UPR development trend there is a phenomenon that can not be ignored is the central and western, southwestern and other regions will appear FRP composite materials industry new development layout. According to the relevant parties to understand, around Xi'an, Luoyang and Jinzhongnan region, around ASEAN and China's trade "zero tariff" implementation and the construction of the Great Southwest, around Gansu, Xinjiang, chemical raw materials supporting bases, the construction of the Great Northwest and West Asia exports and other regions of the increasing demand for FRP composites, will soon be in these areas UPR And glass fiber scale enterprises. By the end of 2009, China's UPR enterprises will be more than 160, 2 / 3 of the enterprise is from the past township enterprises into private enterprises and private enterprises. This part of the enterprise, some actively introduce technical personnel and advanced equipment to improve themselves, and gradually establish a brand. But the vast majority of enterprises, the lack of technology, difficult to move forward, and some also mixed to do "pounding paste". These enterprises, faced with two ways out, one is the development of downstream products, and another is through technological progress, enhancement of enterprises. These two roads do not work, only let the market eliminate you. It can be expected that the UPR industry in three, five, eight years of these three stages, facing continuous integration and reorganization, resin growth will be transformed from the growth of production to brand and quality upgrade.
Two, low-carbon economy and the emerging markets of FRP
"Low-carbon economy" is a term first seen in the 2003 UK Energy White Paper "Our Energy Future; Creating a Low-Carbon Economy". As a pioneer of the first industrial revolution and not resource-rich, the UK is fully aware of the threat of energy security and climate change. According to relevant information, the annual carbon dioxide emission in the world is now close to 30 billion tons. The massive emission of carbon dioxide has caused global warming and the backing up of sea water. The United Nations Intergovernmental Panel on Climate Change has warned that sea levels are rising 18-59 centimeters per year as a result of climate warming, and that at such a rate, by 2100, some of the world's low-lying island nations and the 32 deltas at the forefront of climate change around the globe will be completely or partially inundated by seawater. Advanced developed countries have taken carbon dioxide as an air pollutant and increased carbon taxes accordingly.
Low-carbon economy, the world has experienced three periods of development in the past decade. In December 1997, the Third Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), held in Kyoto, Japan, adopted the Kyoto Protocol, which restricts the emission of greenhouse gases in developed countries to curb global warming. The protocol stipulates that by 2010, all developed countries must reduce their emissions of six greenhouse gases, including carbon dioxide, by 5.2 percent from 1990 levels. The protocol has no mandatory emission requirements for developing countries such as China and has been ratified by more than 170 countries.
The second meeting was the 13th Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), held in Bali, Indonesia, on December 15, 2007, which adopted the Bali Road Map. The Bali Roadmap was adopted by the Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC) in Bali, Indonesia, on December 15, 2007. The main elements include: a substantial reduction in global greenhouse gas (GHG) emissions, and future negotiations should consider setting specific GHG emission reduction targets for all developed countries (including the U.S.); developing countries should endeavor to control the growth of GHG emissions, but should not set specific targets; and to cope with global warming, developed countries have the obligation to provide assistance to developing countries in the areas of technological development and transfer and financial support. "For the first time, the Bali Roadmap includes the United States in the negotiation process, requiring all developed countries to fulfill their measurable, reportable and verifiable greenhouse gas emission responsibilities. In addition, the Bali Road Map emphasizes the need to focus on the three major issues of technology development, transfer and finance for climate change adaptation. In terms of targets, the Bali Road Map proposes that developed countries should reduce their emissions by at least 25% to 40% by 2020, compared to 1990 levels. The third meeting was the United Nations Climate Change Conference held in Gebenhagen, Denmark, from December 7 to 18, 2009, with 15,000 delegates from more than 190 countries and regions around the world. There were major disagreements at this conference on the issue of emissions reductions, mainly on the percentage of reductions and the amount of funding. The United States, China, Brazil and other countries are already big emitters of greenhouse gases in the world, and the expression of China and the United States at the conference gave hope to the participating countries. Before the meeting, China had officially announced its action target for controlling greenhouse gas emissions on November 27 last year, deciding to reduce carbon dioxide emissions per unit of GDP by 40% to 45% by 2020 as compared with 2005; prior to that, the U.S. White House announced that it would make a commitment to the Copenhagen Climate Change Conference to achieve a 17% reduction in greenhouse gas emissions by 2020 as compared with the 2005 level. The announcement came on the heels of the United States White House's announcement that it would commit itself at the Copenhagen Climate Change Conference to achieving a 17 per cent reduction in greenhouse gas emissions by 2020 from 2005 levels as an interim goal. At the Copenhagen Conference, more than 20 developed countries privately drafted an emission reduction target to be adopted, but as a result, it met with opposition from developing countries; the United States also cited the "difficulty of turning around a large ship" as a reason for not being able to legislate on specific emission reduction. This meeting on the specific emission reduction targets on each of the reasoning, but ultimately formed *** knowledge, to accelerate the adoption of environmental technology *** enjoy, accelerate the global carbon reduction.
Today, we come to talk about the low-carbon economy, that is, low energy consumption, low pollution, low emissions as the basis of the economic model, the essence of energy efficiency and clean energy use, the core is the energy technology innovation, institutional innovation and human survival and development of the concept of fundamental change. The mainstream understanding of a low-carbon economy refers to an economy that minimizes the emission of greenhouse gases. This is mainly reflected in the following: on the industrial side, high-efficiency production and energy use; on the energy structure side, renewable energy production will take up a fairly high proportion; on the transportation side, the use of high-efficiency fuels, low-carbon emission means of transportation, public *** transportation instead of private transportation, and greater use of bicycles and walking; on the construction side, the use of high-efficiency energy-saving materials and energy-saving construction methods for office buildings and family housing. In the final analysis, we will gradually reduce carbon emissions per unit of GDP. The "low carbon economy" is not just a new concept, but the next round of new economic growth. For the prospect of China's economic development, the past "Made in China" is facing pressure to reduce emissions, the way to reduce carbon emissions will rely on production processes, production equipment, production means of technological upgrading and technological innovation "low carbon technology", through the implementation of low carbon technology to form a "low carbon standard". "Low carbon standards", to achieve low carbon high growth, low carbon cost reduction. Promoting low-carbon technology has a close connection with the FRP industry. In the 1960s, the FRP industry entered the market with the simple concept of "substituting steel, substituting wood", the high specific strength of FRP, a large number of substitutes for steel and metal materials; from the point of view of saving resources, a large number of substitutes for wood. With decades of market operation of FRP industry, many excellent properties have been derived, highlighted by its plasticity, designability and multifunctionality. Its plasticity gives all kinds of characteristic molding process; its designability, simplifies the traditional manufacturing process, reduces the cost, and realizes the optimized combination of material and performance; its multifunctionality is manifested in the excellent electrical performance, chemical performance, aging resistance, fatigue resistance, water resistance, combustion resistance, etc.. It can be seen that the future industry to promote low-carbon technology to achieve a low-carbon economy, can not be separated from the glass fiber reinforced plastic; at the same time, but also to the glass fiber reinforced plastic industry for a new development space.
From the industry we are currently familiar with, vehicles, shipbuilding, water treatment, chemical anticorrosion, building energy efficiency, etc. will face the constraints of the global low-carbon economy, FRP composites have become and the future to achieve the industry's low-carbon economy, an important choice of materials. Low carbon emission transportation including: cars, buses, engineering vehicles, commercial vehicles, high-speed trains, boats, aircraft and spacecraft. Qingdao Lomeiwei Ao New Material Products Co., Ltd. is a professional manufacturer of lightweight fiberglass reinforced plastic (FRP) interior and exterior structural parts for high-speed train bodies in China. Over the years since its establishment, the company has been actively adopting international advanced product standards and selecting raw materials to meet the requirements and standards of weight reduction of the car body, and the first batch of parts were successfully applied to the Beijing-Tianjin Intercity High-speed Railway. At present, the company has received a large number of orders for car body fittings from Qingdao Railway, Tang Railway and Changsha Railway, which are in short supply. Starting from the concept of low carbon economy and through the implementation of low carbon technology, Romeovio has achieved the low carbon standard stipulated by the fittings, and has become the best supporting enterprise in domestic rail transportation to realize high speed and low emission. It has also been certified by Siemens, an internationally recognized company, as a "top-tier supplier". Again, such as guangxi guilin daewoo bus company and its glass fiber reinforced plastic big surround supporting enterprise together, a change in the past, "buy and sell" glass fiber reinforced plastic products phenomenon, *** with the carry out to reduce the weight, low carbon as the goal of the design process. In the field of transportation, China's boats have great prospects for development. Steel ships to achieve low carbon emissions, reduce self-weight has been mentioned on the agenda, a number of years later, not up to the requirements of the International Convention to reduce emissions by 15%, will not be able to enter the open sea; China's glass fiber reinforced plastic yacht market, through the carbon emissions design specifications, lightweight sandwich structure design will gradually replace the heavy structure of the veneer design. Yachts will become lighter, run faster and consume less energy. Water treatment technology, water resources development will be an important market for the emerging FRP industry in the future, Hebei Zhongyi Composites Co., Ltd. and Beijing University of Science and Technology jointly developed a successful anti-seawater corrosion of ultra-large glass fiber reinforced plastic pipe winding research and mobile winding equipment. Some companies are also concerned about the development and application of FRP high-pressure pipe in seawater desalination technology.
Compared to the developed countries, our FRP industry oriented "low-carbon economy" on the level of the obvious lag. With the concept of low-carbon economy continues to take root in people's hearts, the domestic industry will need to re-interpretation, re-recognition, to speed up the need to promote. Domestic traditional export products are still in the "high-carbon economy" on the wandering, is likely to encounter a new round of "carbon tariffs" of the "green barriers". For glass fiber reinforced plastic materials involved in various industries, should be integrated into the "low-carbon economy", "low-carbon technology", "low-carbon standards" concepts and measures, and really make our glass fiber reinforced plastic materials become All walks of life supporting, cost-effective and strong weight ratio of the best lightweight materials, functional materials and structures, so that low-carbon and "FRP economy" synchronization.
Third, China's wind power market and megawatt-class FRP blades
The development of clean energy, the development of wind power is the global realization of the low-carbon economy, China's total installed capacity of wind power has been among the world's fourth. The development of megawatt wind power generation, China at that time the lack of complete sets of technology, the country decisively organized enterprises to introduce mature technology in Europe, so that China's wind power industry grows extremely rapidly. China's wind power market in the end how? What is the prospect? Here we analyze some of the figures:
The above data show that China's wind energy resources are very rich, has been utilized by the grid-connected wind power installed capacity of only 6‰ of the total resources, accounting for the country's total installed capacity of 1.8% of the total electric power, and the use of wind power in developed countries in Europe, Denmark, Germany, compared to the gap is very far. In addition, from China's current wind power grid, nearly one-fifth of the wind energy equipment is not connected to the grid (2000-1613 = 387). Also learned from the relevant parties, in recent years, China's wind power industry has been a cause for concern, megawatt-level machine enterprises reached more than 80, megawatt-level blade manufacturing enterprises more than 70, and advanced developed countries and the domestic status quo, it is clear that a bit of "fish-eye mixed up" and "difficult to get off the tiger! ". Soon, the National Development and Reform Commission document pointed out that wind power generation is also facing overcapacity. Immediately after the state and the following cancellation of wind power equipment localization rate of 70% of the provisions. Wind power overcapacity and 70% localization regulations canceled, is the country's wind power industry in China in a timely injection of sobriety. At present, on the one hand, the low level of duplication of construction, on the other hand, is efficient and advanced equipment in the foot, the state policy introduced, so that the free choice of the market is more transparent, more clear, to promote the healthy development of China's wind power industry is of practical significance and far-reaching significance.
Megawatt-class FRP blades account for about 20% of the cost of the entire wind power equipment. Blade design, material selection and process is to determine the performance of wind power device and power of the main factors, as well as the unit cost of wind power generation. Throughout the world blade technology development trend, and take into account the wind turbine efficiency and reduce costs of two factors, the production of blade is to large-scale development. The larger the stand-alone power, the lower the cost per KW of electricity generated. Therefore, the global wind power equipment are to megawatt-class high-power and long blade direction development. Typical Danish company LM is the largest group in the world of wind power generation, with 28 years of practical experience in the production of blades, with an annual production capacity of more than 10,000 pieces of blade, and has set up factories in Tianjin and Qinhuangdao, China. LM is the only company in the world that has the ability of In-House testing, which allows it to carry out full-scale testing of its blades, and all the newly-designed blades can be tested for 20 years of operation before being allowed to be put into production. All new blade designs are tested for 20 years of operation before they are approved for production. These tests include static, dynamic, and lightning strike tests, etc. The laser scanner in the testing equipment provides precise geometrical data for the blades.The longest blade produced by LM is 61.5m, which is the longest in the world, with the weight of 17.7 tons, made of epoxy-based glass-fiber-reinforced composite material, with carbon fiber at the tip of the blade and other places, and it has already been installed on the 5MW offshore wind turbine of Finnish REpower Company. LM's blade manufacturing technologies include multi-functional robots for laying fiberglass to improve the laying progress by 25%, innovations in bolt support to increase the length of the blade by 20%, the use of RIM method to shorten the resin penetration time by 15-20%, and the use of FRP molds instead of steel molds to achieve low cost. According to the information, the Danish National Foundation for Advanced Technology has allocated DKK 0.6 billion for LM to carry out research on an innovative new blade technology, named "King of Blades". The project, named "King of Blades", involves the manufacture of blades using a blend of yarns made of FRP, C fibers and thermoplastic materials. Once the yarn is laid into a mold, the mold is heated and the plastic yarn melts, cutting the blade production time in half. In terms of blade design, LM also introduced a new blade concept 10 years ago with elastic deflection, referred to as a pre-curved blade. The blade is curved outward at the tip so that it can be kept at a distance from the tower during rotation, even in strong winds, to prevent it from hitting the tower. Pre-bent blade because of its license to bend a larger amount of stiffness is comparable, thus reducing the amount of material, weight reduction, and access to more wind energy. According to the relevant parties, this pre-bent blade compared with the standard blade, wind farms in 2.6m / s wind speed conditions can start. It is understood that LM company and GE company cooperation project on the development of lengthening the blade to increase the amount of electricity for case study determination, with 40.3m long blade to replace the original 1.5MW wind turbine on the 37.5m long blade, the results indicate that power generation increased by 7%, the reason is that its outer circle wind swept area than the inner circle wind swept area increased by 14.8%. It can be concluded that LM's megawatt-class blade design and manufacturing technology is the most advanced and competitive in the world.
In China, AVIC Huiteng relies on continuous innovation, a step ahead in the wind blade industry, independent technology, self-development of UPR-based FRP blade enterprises. Its 600kw-750kw blade accounted for more than 90% of the domestic, in the development of 37.5m blade on the successful use of high-performance UPR. the company's installed capacity of the blade in previous years accounted for nearly half of the proportion of the country. In the process of seeking technical cooperation, the company has participated in technical exchanges and cooperation with nine wind blade enterprises in Holland, Germany, Britain, etc. The company has established the independent capability of China's MW-class blade technology in the domestic market. The main features of Huiteng's blade technology include structural damping patents (to reduce vibration), proprietary blade tip technology (to provide aerodynamic performance to reduce noise), mirror mold technology, fast room temperature curing technology, high-precision balancing technology, high-precision blade root positioning technology and so on. Taking 1.5MW, 6-ton blade as an example, the weight error of each blade is below 1kg, and the deviation of the center of gravity is no more than 10mm, so its start-up wind speed is only 2.6m/s, and power generation wind speed is 3m/s. The company has developed 2MW blades and is working on new blade designs according to the requirements of wind farms. Domestic enterprises to form a mass production of Zoomlion, Beijing Sinoma FRP Research Institute, Shanghai FRP Academy and so on. Around the wind power equipment supporting FRP products are also organic silo cover and deflector cover, the domestic use of the most advanced vacuum and LRTM process there are four units, Shandong Dezhou region of the double one, China wing, Zhu Pi Te three companies and Jiangsu Yaxilu company, most of the products for foreigners supporting the export. Changzhou huari-new material company first for these enterprises to provide excellent performance of high strength, low viscosity, low exothermic UPR.
In order to reduce the cost of power generation, in addition to the design of the blade, the material and process of molding is changing day by day, through the selection of materials and processes to achieve the lightweight and functionality, so as to improve the efficiency of the wind energy. In order to get the best price/performance ratio for blades, in recent years, OCV has introduced high performance Advantax glass fiber in the global blade market, which has high strength and modulus compared to E glass fiber, and has been successfully used in megawatt-class blade manufacturing. More recently, OCV has applied S glass fiber to larger blades, with a modulus of 85.5 Gpa, 18% higher than E glass fiber, and 33% stronger, making it technically more advanced for the application of high-strength, high-strain-at-break S glass fiber in wind turbine blades. Recently, the PPG company to the global wind blade industry launched a high-performance high-strength, fatigue-resistant glass fiber. According to reports, the development of HYBON2026 and the current market with the production of blade glass fiber products compared to 20% higher tensile strength, fatigue strength is also several times higher. Domestic enterprises to meet the megawatt-class blade materials have also carried out a lot of research and development work, Chongqing International has developed ECT and TM high-performance fibers, and its sales accounted for the domestic megawatt-class blade with 1/3 of the amount of glass fiber, in 2009, but also exported to Western Europe high-performance fibers amounted to 2.5 million tons. In addition, high performance fibers such as GMG of Taian and E6 of Jushi have also entered the market. The increasing length of the blade makes the lightweight, high-strength carbon fiber in the wind power generation applications continue to expand, the decline in the price of large tow carbon fiber has become the preferred structural material for wind turbines, the same 34-meter-long blade, the use of GF/UP mass of 5,800 kg, the use of GF/EP mass of 5,200 kg, the use of CF/EP mass of 3,800 kg. Therefore, the trend of blade material development is to use CF/EP, but also face the pressure of price. Foreign countries are from raw materials, process technology, quality control and other aspects of in-depth research to reduce costs. According to relevant information, in order to increase the stiffness of the blade and prevent the tip of the pre-bent part of the tower, in the length of more than 50m of the blade will be widely used carbon fiber.
Lightweight, closed-cell, high-strength foam is another major component of blade materials, used in structural applications. According to the Swedish DIAB company data reported can be used for 60 meters long wind turbine blade core parts. The use of this core material and infusion technology, can reduce cycle time by 50%, reduce labor costs by 30%, compared with the open type technology, sandwich infusion technology to reduce 90% of the styrene emitted, and make the whole blade to achieve lightweight and high strength. DIAB company in China Kunshan factory launched the PVC contour plate according to the product "tailor-made" directly to the blade. The PVC contour plate introduced by DIAB in Kunshan factory in China is "customized" according to the product, which is directly used in the production of blades, saving time and material, and reducing cost. Currently the production of blade foam structure of foreign companies have Gurit Tianjin company, plus aluminum Shanghai company, etc., the domestic Changzhou Tiansheng company with the cooperation of the relevant scientific research institutes, developed last year, the successful structure of the foam.
With the development of offshore wind power, the blade performance requirements are higher, lightweight, high-strength, high elasticity, fatigue resistance will promote the continuous generation of new materials. Bayer not long ago launched a commercialized grade Baytube carbon nanotubes for use in epoxy resins to enhance the blade's fatigue resistance, impact resistance and improve the resilience of the material. The company revealed that the use of carbon nanotubes in the resin will reduce the mass of the blade by 20-30% and increase its strength by 30%. In the blade molding process has appeared a new trend, Zhongfu Lianzhong company has practiced and completed the prepreg molding process, blade manufacturing by wet molding changed to dry heating molding; Germany Siemens company in the blade molding process unique integral molding. The application of these new technologies to further improve the dimensional stability of the product, but also shorten the process time.