摘要
以酚醛树脂与石墨粉料为原料,通过热模压成形得到一种质子交换膜燃料电池双极板材料。研究了酚醛树脂含量、石墨粒径和固化温度对复合材料导电性能与弯曲强度的影响。结果表明:随酚醛树脂含量的增加,导电性能降低,强度升高;随石墨粒径的增大,复合材料的导电性能和弯曲强度呈现先增大后减小的趋势;随固化温度的增加,导电性能出现明显波动,而弯曲强度呈先增大后减小的趋势;酚醛树脂质量分数为15%,石墨颗粒粒径为105μm,固化温度为240℃时,导电复合材料的电导率和弯曲强度可达142 S/cm,61.6 MPa。
A kind of the materials for the bipolar plate of proton-exchange membrane fuel cells(PEMFC) were fabricated by the hot-pressure molding with graphite powders and phenol-formaldehyde(PF) resin powders.The factors including the PF resin content,the graphite particle size and curing temperature which affected the conductivity and bending strength of the composite were investigated.The results showed that the conductivity decreased and bending strength increased with the increasing of PF resin content,that the conductivity and bending strength would increase firstly and then decreased with the increasing of graphite particle size,and that the conductivity surged greatly and bending strength would increase firstly and then decrease with the increasing of curing temperature,that the electrical conductivity and bending strength of the composite were 142 S/cm,61.6 MPa,when the PF resin mass content,graphite particle size and curving temperature were 15%,105 μm and 240℃.
出处
《现代化工》
CAS
CSCD
北大核心
2007年第z1期220-223,225,共5页
Modern Chemical Industry
基金
国家自然科学基金项目(50672051)
关键词
石墨
酚醛树脂
双极板
导电性能
弯曲强度
graphite
phenol-formaldehyde resin
bipolar plate
conductivity
bending strength
