原纤化PAN纤维打浆度和碳纤维含量对碳纸性能的影响

Effects of Beating Degree and Carbon Fiber Content of Fibrillated PAN Fiber on Properties of Carbon Paper

本研究以原纤化聚丙烯腈(PAN)纤维与PAN碳纤维(简称碳纤维)为原料,通过湿法造纸成形工艺、碳化处理,制备了复合碳纸,并探索打浆度和碳纤维含量对碳纸性能的影响。结果表明,随着碳纤维含量降低,碳纸的拉伸强度增加;随着PAN纤维的原纤化程度(打浆度)升高,碳纸的拉伸强度增加。原纤化PAN纤维和碳纤维所制碳纸拥有优异的透气性,并同时具备良好的柔韧性和拉伸强度,综合性能最好的碳纸透气度为465.4 mm/s,拉伸强度为2.0 MPa。

In this study,composite carbon paper was prepared from fibrillated polyacrylonitrile(PAN)fibers and PAN carbon fibers(re‐ferred to as carbon fiber)by wet forming process and carbonization treatment,and the effects of beating degree and carbon fiber content on the properties of carbon paper were explored.The results showed that the tensile strength of carbon paper was better with the decrease of car‐bon fiber content.With the increase of the fibrillation degree(beating degree)of PAN fibers,the tensile strength of carbon paper was bet‐ter.The resulting carbon paper had excellent air permeability,as well as good flexibility and tensile strength at the same time.The carbon paper with the best overall performances had permeability of 465.4 mm/s and tensile strength of 2.0 MPa.