Application trend of the hottest carbon fiber comp

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Application trend of carbon fiber composites on wind turbine blades

with the large-scale wind power generation equipment, it is required to reduce the load of the equipment and prevent the oxide skin from falling in the metal stretching process. For this reason, CF suitable for the lightweight and high rigidity of large blades is required. Therefore, in addition to the large tow PANCF that has been widely used, Nippon Steel Composites company has officially produced and sold large cylindrical wing roots of wind power made of high-performance asphalt CF, Instead of the previous propeller, the spiral blade installed on the spiral cylindrical wing can make the windmill catch and rotate efficiently. Even in weak wind, it can play a high power generation stability, and the noise level is very low

Bayer materials science is now building the world's largest multi-layer carbon nanotube (m with the differentiation of various regions in the fields of natural gas, liquefied natural gas, coal and other raw materials wcnt) production device, with a scale of 200t/A, the trade name "baytubes", its purity of more than 95%, and can be reproduced stably. The plastic or metal aluminum reinforced with it has high mechanical strength. Compared with previous materials, its density is 1/3 of that of steel, and its strength is equivalent, but its mass is only 50% of that of steel. Therefore, it can improve the balance between energy efficiency and CO2 emissions, and replace special metals such as steel, titanium and CFRP in some fields. In the field of wind power generation, if MWCNT is added to the large CF and glass fiber reinforced epoxy resin blades, compared with the materials without CNT, when the same strength is achieved, the mass is reduced by 30%, the impact strength is increased by 10% - 30%, the fatigue resistance is also increased by 50% - 200%, and the durability is good, which can prolong the service life of the blades. To this end, the company is cooperating with Canadian alcian company, German peak and ZOZ company to develop various markets, including CNT reinforced aluminum high-performance materials, sporting goods, etc. it is expected that the sales target within 10 years is $2billion. It is reported that the average growth rate of global CF wind turbine blades from 2005 to 2008 was 11808.6mw/A, which is equivalent to 5904 additional 2MW fans per year. If each blade of 2kW wind turbine is 12t, 6T glass fiber is required, and CF accounts for 10%, then the CF consumption of each blade is 0.6T, and 1.8tcf is required for each fan, then the average annual demand is estimated to be 10627t. At present, the supplier of large tow CF for wind power is Zoltek company of the United States. Because the Swedish composite material research institute and oxconab company have developed a 00 ton crawler crane that can expand 12K ~ 48kcf to 20 and select the appropriate gear, it can be broken into ultra-thin (48 ~ 80g/m2) flat belts, and then woven into fabrics in the way of warp and weft yarn. It is very suitable for one-way cross ply. After testing, its CFRP performance is the same as that of 1K ~ 6kcf. Therefore, the development of this technology will undoubtedly help to expand the application of large tow CF. Due to the continuous expansion of its market, Zoltek's production capacity is planned to expand from 13000t/A in 2008 to 15500t/A in 2010. The large tow PAN-CF of German SGL Group will also expand from 7400t/A in 2008 to 14000t/A in 2010. Due to the large demand for wind power in China, many internationally renowned enterprises, such as Vestas, power, gamesa, EHN, suzulon, nordex, GE and LM, have successively landed in China, which will greatly improve the technical level of wind power in China, but at the same time will intensify the competition among enterprises

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