Domestic carbon fiber blades achieve a breakthrough

According to Song Dewu, Party secretary and chairman of Jilin Chemical Fiber Group, in 2022, the global demand for carbon fiber fan blades accounts for 25.7% of the total global demand for carbon fiber, and the demand for carbon fiber fan blades in China also accounts for 23.5% of the overall demand for carbon fiber.

In Song Dewu's view, compared with aerospace, military science and technology and other fields, the carbon fiber product standards required for fan blades are different, the technical cost is relatively lower, the production process, according to different performance, process and cost, design different application performance and production process parameters, relatively quickly achieve mass production of carbon fiber.

In this case, China's carbon fiber industry has grown rapidly in the past two years. Data show that in 2022, the domestic carbon fiber production capacity reached 112,000 tons, and the supply exceeded the import volume for the first time.

Yuan Yuan, the main blade structure and blade product manager of Goldwind Technology Co., LTD., pointed out that in recent years, the growth of domestic carbon fiber planned production capacity is very considerable, and the scale of research and development and application of carbon fiber blades is also growing rapidly. "As early as 2017, the international market has opened the application of carbon fiber blade manufacturers, LM, Siemens Gamesa, Vestas and other multinational companies also have 100-meter carbon fiber blade output." With the vigorous development of the domestic offshore wind power market, in 2022, the development of domestic offshore large blades has achieved comprehensive catch-up. At present, a large number of offshore fan blades are designed with carbon fiber in the domestic market, and domestic mainstream machine and blade manufacturers have also planned the next generation of offshore large megawatt units, and larger offshore fan carbon fiber blades are also under development."

It is understood that at present, domestic mainstream machine manufacturers such as Mingyang Intelligent, Shanghai Electric, Dongfang Electric, Goldwind Technology have opened the test and production application of carbon fiber blades. Data show that since 2022, more than 70% of the newly developed and newly mass-produced offshore wind turbines in China have applied carbon fiber blades, and even in onshore wind turbines, some companies have begun to apply carbon fiber blades in small batches.

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