Issue 49/2015 - Weihai has made a new breakthrough in expanding carbon fiber industrialization technology

On December 14, 2015, during the annual work meeting of the "Carbon Fiber and Composite Materials Industry Technology Innovation Strategic Alliance" (the pilot alliance of the Ministry of Science and Technology), the Weihai Science and Technology Department organized well-known experts in the industry to conduct an on-site review
of the "Key Technology for the Industrialization of High-strength Carbon Fiber Efficient Preparation" independently developed by Weihai Expansion Fiber Co.
, Ltd 。 Experts are from Beijing University of Chemical Technology, Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences, Institute of Aerospace Materials and Technology, Beijing FRP Research Institute, MCC Construction Research Institute Co.
, Ltd.
, China Chemical Fiber Industry Association, Lianyungang Zhongfu Shenying Carbon Fiber Co.
, Ltd.
, etc
.

According to the introduction of "dry spray wet spinning" raw silk preparation technology - as one of the key technologies for the industrialization of efficient preparation of carbon fiber, Weihai Development has carried out research in this area in 2001~2005, and the spinning speed has reached 100m/min
。 In order to meet the market demand, in 2012, they set up the project again and after three years of engineering technology research and development, they have now mastered the design and manufacture of large-scale polymerization reactor, efficient polymerization process, efficient single and defoaming, rapid low-temperature solidification, ultra-efficient water washing, high-power steam drafting, special oil agent development and oiling process in the preparation process of dry spray wet spinning yarn
.

Experts saw that the 6-spinning raw silk production line was running stably, and the actual spinning speed exceeded 270m/min
.
After carbonization, the 12K precursor was tested by Beijing University of Aeronautics and Astronautics, and the tensile strength was 5133~5668MPa, the tensile modulus was 236~241GPa, and the elongation was 2.
16~2.
38%.


Experts unanimously believe that Weihai Expansion Fiber Co.
, Ltd.
has achieved a breakthrough in the key technology of GQ4522-grade carbon fiber efficient preparation and industrialization, and has the technical foundation
to build a thousand-ton industrialized production line with higher product performance and larger production capacity.