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Study of Alkali Pretreatment on the Dispersion of Carbon Fiber and the Performance of Carbon Paper-base Paper
Received:September 14, 2022  
DOI：10.11980/j.issn.0254-508X.2022.11.004
Key Words:carbon fiber  dispersion  alkali pretreatment  carbon paper-base paper
Fund Project:浙江省“尖兵”研发攻关计划项目（2022C01066）；浙江省自然科学基金项目（LY20C160006）。
Author NameAffiliationPostcode
KONG Zhiqi School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZHANG Meng School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
LIU Bei School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZHAO Huifang School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
SHA Lizheng School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
GUO Daliang* School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
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Abstract:In this study， carbon fiber used as raw material， the effects of alkali pretreatment on the dispersion stability of carbon fiber and the properties of carbon paper made from carbon fiber by wet papermaking were studied. The changes on surface morphology and surface groups of carbon fiber after alkali pretreatment were investigated， the stability of carbon fiber pulp suspension was discussed， and the changes on evenness， air permeability， tensile strength， and resistivity of prepared carbon paper-base paper were characterized. The results showed that compared with carbon fiber treated with deionized water， the carbon fiber was better dispersed in water after 0.75 mol/L alkali pretreatment for 60 min， and the evenness of the prepared carbon paper-base paper was better. The air permeability of the carbon paper-base paper decreased from 1432 mm/s to 1080 mm/s， the tensile strength increased from 1.44 kN/m to 2.49 kN/m， and the resistivity decreased from 143.58 mΩ/cm to 68.10 mΩ/cm.
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