The industrial production of carbon fiber by raw material route can be divided into polyacrylonitrile (PAN)-based carbon fiber , asphalt-based carbon fiber and viscose-based carbon fiber three categories, but the main production of the first two kinds of carbon fiber. The high mechanical properties of carbon fiber made from viscose fiber must be stretched by high temperature and graphitization, low carbonation yield, technical difficulty, complex equipment, rich raw material carbonation yield, but because of the complex raw material modulation, product performance is low, also did not get large-scale development; high performance carbon fiber made from polyacrylonitrile fiber precursor, Its production process is simpler than other methods, the output is about 90% of the global carbon fiber production.
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