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公开(公告)号：EP4095294A1
公开(公告)日：2022-11-30
申请号：EP22175913.7
申请日：2022-05-27
发明人： Tsai, Kun-Yeh , Hung, Chia-Chi , Chou, Wen-Ju , Chen, Ching-Wen , Hsieh, Chia-Chun , Lin, Shi-Jie , Hwang, Long-Tyan
摘要： Carbon fiber and method of forming the same are provided. The method modifies proportion of a finishing oil to control a relation between a surface tension and a particle size of the finishing oil, and thus penetration of the finishing oil into an interior of the carbon fiber is avoided. Therefore, the carbon fiber can have both low oil residues and a high strength.
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公开(公告)号：EP4141154A3
公开(公告)日：2023-05-03
申请号：EP22192011.9
申请日：2022-08-24
IPC分类号： D01F9/22 , D01D5/06 , C08F220/44 , C08F220/48
摘要： The present invention relates to a method for producing a carbon fiber. In the method for producing the carbon fiber, a high pure acrylonitrile monomer with specific contents of impurities and a comonomer are used to produce an acrylonitrile copolymer, and the acrylonitrile copolymer is subjected to a spinning operation, a stretching operation, an oxidation treatment and a carbonization treatment in sequence, for obtaining the carbon fiber. The acrylonitrile copolymer with an appropriate falling-ball viscosity and an appropriate weight-average molecular weight is beneficial to the spinning operation, thereby reducing an inner pore diameter and enhancing strength of the resulted carbon fiber.
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公开(公告)号：EP4123064A1
公开(公告)日：2023-01-25
申请号：EP22185584.4
申请日：2022-07-18
发明人： Chou, Wen-Ju , Chen, Ching-Wen , Tsai, Kun-Yeh , Hung, Chia-Chi , Hsieh, Chia-Chun , Hwang, Long-Tyan
IPC分类号： D01F6/18 , C08F2/06 , C08F220/44 , C08F220/46 , D01F6/38 , D01F9/22
摘要： A manufacturing method for a carbon fiber includes the following steps. A first monomer and a second monomer are dissolved in a first solvent, and a polymerization reaction is performed to form a copolymerized polymer, in which the first monomer includes acrylonitrile, the second monomer has an unsaturated bond, the first solvent includes dimethyl sulfoxide, and based on 100 wt% of the first solvent, a content of the dimethyl sulfoxide is between 99.9 wt% and 100 wt%. A spinning step is performed on the copolymerized polymer.
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公开(公告)号：EP4123066A3
公开(公告)日：2023-04-05
申请号：EP22186336.8
申请日：2022-07-21
发明人： Hsieh, Chia-Chun , Tsai, Kun-Yeh , Chen, Ching-Wen , Hung, Chia-Chi , Chou, Wen-Ju , Hwang, Long-Tyan
摘要： A manufacturing method for a carbon fiber includes: performing an emulsification step that includes uniformly mixing a silicone oil composition and an emulsifier to form an oiling agent, in which the silicone oil composition includes γ-divinyltriamine propylmethyldimethoxyl silane and N-(β-aminoethyl)-γ-aminopropylmethylbimethoxy silane; performing an oiling step that includes soaking a carbon raw filament in the oiling agent, such that the oiling agent is adhered to a surface of the carbon raw filament to form a carbon fiber precursor; and performing a calcination step on the carbon fiber precursor, such that the carbon fiber is formed.
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公开(公告)号：EP4141154A2
公开(公告)日：2023-03-01
申请号：EP22192011.9
申请日：2022-08-24
IPC分类号： D01F9/22
摘要： The present invention relates to a method for producing a carbon fiber. In the method for producing the carbon fiber, a high pure acrylonitrile monomer with specific contents of impurities and a comonomer are used to produce an acrylonitrile copolymer, and the acrylonitrile copolymer is subjected to a spinning operation, a stretching operation, an oxidation treatment and a carbonization treatment in sequence, for obtaining the carbon fiber. The acrylonitrile copolymer with an appropriate falling-ball viscosity and an appropriate weight-average molecular weight is beneficial to the spinning operation, thereby reducing an inner pore diameter and enhancing strength of the resulted carbon fiber.
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公开(公告)号：EP4123066A2
公开(公告)日：2023-01-25
申请号：EP22186336.8
申请日：2022-07-21
发明人： Hsieh, Chia-Chun , Tsai, Kun-Yeh , Chen, Ching-Wen , Hung, Chia-Chi , Chou, Wen-Ju , Hwang, Long-Tyan
摘要： A manufacturing method for a carbon fiber includes: performing an emulsification step that includes uniformly mixing a silicone oil composition and an emulsifier to form an oiling agent, in which the silicone oil composition includes γ-divinyltriamine propylmethyldimethoxyl silane and N-(β-aminoethyl)-γ-aminopropylmethylbimethoxy silane; performing an oiling step that includes soaking a carbon raw filament in the oiling agent, such that the oiling agent is adhered to a surface of the carbon raw filament to form a carbon fiber precursor; and performing a calcination step on the carbon fiber precursor, such that the carbon fiber is formed.
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