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ACRYLONITRILE COPOLYMER AND METHOD FOR MANUFACTURING THE SAME, AND ACRYLONITRILE COPOLYMER SOLUTION AND POLYACRYLONITRILE PRECURSOR FIBER FOR CARBON FIBER AND METHOD FOR MANUFACTURING THE SAME
ACRYLONITRILE COPOLYMER AND METHOD FOR MANUFACTURING THE SAME, AND ACRYLONITRILE COPOLYMER SOLUTION AND POLYACRYLONITRILE PRECURSOR FIBER FOR CARBON FIBER AND METHOD FOR MANUFACTURING THE SAME
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机译:丙烯腈共聚物及其制备方法,碳纤维丙烯腈溶液和聚丙烯腈前体纤维及其制备方法
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摘要
Disclosed are an acrylonitrile copolymer excellent in thermal stability as a solution (spinning dope) when dissolved in an amide solvent and capable of forming dense polyacrylonitrile fiber suitable for production of carbon fiber, an acrylonitrile copolymer solution in which the acrylonitrile copolymer is dissolved in an amide solvent, and a method for producing polyacrylonitrile precursor fiber for carbon fiber by use of the acrylonitrile copolymer solution. Specifically, an acrylonitrile copolymer contains a sulfonate group derived from a polymerization initiator in an amount of 1.0 × 10-5 equivalent/g or more, and the value (equivalent ratio) of (the content of a sulfate group derived from the polymerization initiator/the total content of the sulfonate group and the sulfate group) is 0.4 or less; an acrylonitrile copolymer solution contains the aforementioned acrylonitrile copolymer and an amide solvent.
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