中国造纸2025，Vol.44Issue(8)：42-50,94,10.DOI:10.11980/j.issn.0254-508X.2025.08.006
聚氨酯用于界面调控以实现碳纸韧性的提升
Use of Polyurethane for Interface Control to Improve the Toughness of Carbon Paper
摘要
Abstract
In order to improve the toughness of carbon paper(CP),this study employed thermoplastic polyurethanes(TPU)to construct multi-layer interfaces during the CP molding process to reduce the interfacial bonding strength between carbon fiber and resin carbon.The results showed that TPU could fill the grooves on the surface of carbon fiber and reduce the surface roughness.With the increase of TPU con-tent,the average pore size of CP increased,the surface conductivity remained basically unchanged,the surface roughness and fracture toughness showed a trend of increasing first and then decreasing.When the TPU mass fraction was 49.8%,the fracture toughness of CP in-creased by 99.8%compared with the unmodified CP,the average pore size increased by 35.2%,and the surface roughness reduced from 28.1 μm to 26.2 μm.The improvement in CP toughness was attributed to the energy dissipation caused by fiber pull-out and debonding.Under conditions of 100%relative humidity,the limiting current density and power density of a single cell reached 1.28 A/cm2 and 347.8 mW/cm2,respectively,achieving the fuel cell performance of commercial CP.关键词
碳纸/聚氨酯/韧性/界面调控Key words
carbon paper/polyurethane/toughness/interface control分类
轻工纺织引用本文复制引用
赵双双,蒙玲,李海龙,陈冬..聚氨酯用于界面调控以实现碳纸韧性的提升[J].中国造纸,2025,44(8):42-50,94,10.基金项目
国家自然科学基金青年基金(22208069) （22208069）
制浆造纸工程国家重点实验室(华南理工大学)开放基金资助项目(202404) （华南理工大学）
广东省教育厅重点领域项目(2024ZDZX3039) （2024ZDZX3039）
松山湖材料实验室开放课题基金资助(2023SLABFN16) （2023SLABFN16）
广州市科技局基础研究计划市校(院)企联合资助项目(2025A03J3088). （院）
