A kind of preparation method of hollow structure porous carbon nanofiber
A nanofiber, porous carbon technology, applied in fiber treatment, spinning solution preparation, fiber chemical characteristics, etc., to achieve good performance, improved pre-oxidation performance, good mechanical properties and flexibility
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Embodiment 1
[0032] This embodiment provides a method for preparing porous carbon nanofibers with a hollow structure, and the specific steps are as follows:
[0033] Step 1: Prepare coaxial electrospinning precursor solution:
[0034] ① Preparation of coaxial electrospinning core layer solution: Weigh 3g of styrene-acrylonitrile polymer into 7g of N,N-dimethylformamide, transfer to a round-bottomed flask, and then grind the round-bottomed flask Seal the mouth glass stopper and swell it in a water bath at 60°C for 5 hours; continue to stir magnetically at 80°C for 12 hours until it is completely dissolved; finally let it stand in a water bath at 60°C for 5 hours to defoam, and obtain the coaxial electrospinning core layer solution;
[0035]② Preparation of coaxial electrospinning cortex solution: Add 1.28g acrylonitrile-3-carboxylate ammonium-3-butenoate methyl ester copolymer and 0.32g polymethyl methacrylate to 8.4g N,N- Dimethylformamide, transferred to a round-bottomed flask, then seal...
Embodiment 2
[0042] This embodiment provides a method for preparing porous carbon nanofibers with a hollow structure, and the specific steps are as follows:
[0043] Step 1: Prepare coaxial electrospinning precursor solution:
[0044] ① Preparation of coaxial electrospinning core layer solution: Weigh 3g of styrene-acrylonitrile polymer into 7g of N,N-dimethylformamide, transfer to a round-bottomed flask, and then grind the round-bottomed flask Seal the mouth glass stopper, put it in a 60°C water bath to swell for 5 hours; continue to stir magnetically at 80°C for 12 hours until it is completely dissolved; finally, let it stand in a 60°C water bath for 5 hours to defoam, and obtain the coaxial electrospinning core layer solution;
[0045] ② Preparation of coaxial electrospinning cortex solution: Add 1.28g acrylonitrile-3-carboxylate ammonium-3-butenoate methyl ester copolymer and 0.32g polymethyl methacrylate to 8.4g N,N- Dimethylformamide, transferred to a round-bottomed flask, then seal...
Embodiment 3
[0052] This embodiment provides a method for preparing porous carbon nanofibers with a hollow structure, and the specific steps are as follows:
[0053] Step 1: Prepare coaxial electrospinning precursor solution:
[0054] ① Preparation of coaxial electrospinning core layer solution: Weigh 3g of styrene-acrylonitrile polymer and add it to 7g of N,N-dimethylformamide, transfer it to a round-bottomed flask, and then grind the round-bottomed flask to Seal the glass stopper and swell it in a water bath at 60°C for 5 hours; continue to stir magnetically at 80°C for 12 hours until it is completely dissolved; finally let it stand in a water bath at 60°C for 5 hours to defoam, and obtain the coaxial electrospinning core layer solution;
[0055] ② Preparation of coaxial electrospinning cortex solution: Add 1.2g acrylonitrile-3-carboxylate ammonium-3-butenoic acid methyl ester copolymer and 0.3g polymethyl methacrylate to 8.4g N,N- Dimethylformamide, transferred to a round-bottomed flas...
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Abstract
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