China Takes The Lead In Tackling The Technical Problems Of Dry Spraying Wet Spinning Carbon Fiber
China textile industry The Federation organized a conference on technical achievements of "dry spray wet spinning GQ45 high performance carbon fiber engineering key technology and equipment R & D" project organized by Zhongfu divine eagle Carbon Fiber Co., Ltd., Eagle Eagle travel Textile Machinery Co., Ltd., China Composite Material Group Co., Ltd.
The expert opinion of Sun Jinliang and Jiang Shicheng, the academician of the Chinese Academy of engineering and the expert group of the vice chairman of the appraisal committee, said: "the dry jet wet spinning GQ45 high performance carbon fiber engineering key technology and equipment research and development" project has pioneered the breakthrough of the international advanced dry jet wet spinning carbon fiber manufacturing technology, and developed a homogeneous polymerization system suitable for dry spray wet spinning, a low disturbance air level fiber forming system and a high-speed high power steam drafting system. In terms of equipment, the project has independently developed and designed a fully mixed 60 cubic meter polymerizer, dry spray wet spinning fiber forming equipment, steam drafting equipment, a complete set of carbonization key equipment, and efficient solvent recovery and waste gas treatment system. Based on the above key technology and equipment foundation, we have prepared carbon fiber products whose indexes all meet the national standard GQ4522 standard, and have been applied to many composite materials manufacturing enterprises, reflecting the good results. The appraisal committee unanimously affirms that SYT45 products have reached the leading level in China and the advanced level of similar products in the world.
It is understood that Zhonghui Eagle carbon fibre The company has a complete set of independently developed international mainstream technology, dry jet wet spinning SYT45 equivalent to T700 grade high performance carbon fiber precursor production line and carbonization production line. Zhongfu divine eagle has become the only enterprise in China and the world's third difficult tackling technology for dry spray wet spinning process.
After 4 years of research and development, the company has pioneered the development of high performance carbon fiber dry spray wet process in China, and has now achieved large-scale production and bulk market supply.
The tensile strength of SYT45 high performance carbon fiber is above 4.5GPa and the modulus is 240GPa. It is widely used in industrial, civil engineering, medical devices, sports products, military and aerospace fields. The development of high performance carbon fiber SYT45 is not only an urgent need for modern national defense, but also a need for social and economic development of the country.
dry wet spinning Also called dry jet wet spinning. Compared with wet spinning, dry wet spinning can produce high spinneret and high spinning speed. Dry wet spinning can form a dense thin layer in the air layer to prevent the formation of large pores, which is superior to wet spinning. The fibers obtained by dry wet spinning process are relatively uniform in structure, small in core layer, high in strength and elasticity, nearly round in section structure, smooth in fiber surface, and few in fiber defects. The fibers with high density and high bulk density can produce high performance carbon fibers, which are superior to those of wet spinning carbon fiber in the field of carbon fiber composites.
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