Graphene-oxide-modified phenolic-resin-based ultrafine porous carbon fiber and preparation method thereof

A technology of phenolic resin and graphene, applied in fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of low carbonization yield and low specific surface area of ​​PAN fibers, and achieve improved flexibility, low preparation cost and improved thermal stability Effect
CN103215693AActive Publication Date: 2013-07-24TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2013-07-24

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Abstract

The invention relates to graphene-oxide-modified phenolic-resin-based ultrafine porous carbon fiber and a preparation method thereof. The diameter of the fiber is in a range of 0.3-1.7mum, and the specific surface area of the fiber is 500-900m<2> / g. The fiber has a porous structure which is formed by microporous mainly. Micro-pore volume is 0.20-0.50cm<3> / g, and surface oxygen atomic ratio is lower than 10%. The preparation method comprises the steps that: graphene oxide is added into an organic solvent and is subjected to ultrasonic dispersion, such that a graphene oxide solution is formed; termosetting phenolic resin and a high-molecular-weight linear polymer are added into the graphene oxide organic solution, and are completely dissolved by stirring; the mixed solution is spun into composite fiber, and solidification and carbonization are carried out, such that porous phenolic-resin-based carbon / graphite oxide composite ultrafine fiber is obtained. The sources of adopted raw materials are rich. The prepared composite fiber has the advantages of high structural stability, good flexibility, developed pore structure, controllable surface oxygen content, and suitability for practical application.
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Description

technical field

[0001] The invention belongs to the technical field of porous carbon fibers, and relates to a graphene oxide-modified phenolic resin-based ultrafine porous carbon fiber and a preparation method. Background technique

[0002] Ultrafine porous carbon fibers prepared by electrospinning and subsequent heat treatment have attracted extensive attention in applications such as adsorption catalysis, biomedicine, and energy storage due to their high specific surface area, well-developed pore structure, and self-supporting structure. So far, the precursor used to prepare ultrafine porous carbon fibers is mainly polyacrylonitrile (PAN). However, the carbonization yield of PAN fiber is low, and its specific surface area is very low without activation, and there is almost no pore structure. However, phenolic resin-based carbon fine fiber carbon has a high yield and a well-developed pore structure after carbonization, which has attracted more and more attention.

[0003] ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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