酚醛⁃不饱和聚酯树脂石墨双极板复合材料研究  

Study on phenolic resin/unsaturated polyester/graphite/composites for bipolar plate

作　　者：李航[1] 杜玲枝 吴晓林 冯巧 李桂丽 LI Hang;DU Lingzhi;WU Xiaolin;FENG Qiao;LI Guili(College of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China;College of Materials and Chemical Engineering,Henan University of Urban Construction,Pingdingshan 467041,China)

机构地区：[1]郑州大学化工学院,郑州450001 [2]河南城建学院材料与化工学院,平顶山467041

出　　处：《中国塑料》2024年第10期5-9,共5页China Plastics

摘　　要：以天然鳞片石墨(NG)为导电骨料,酚醛树脂(PF)和不饱和聚酯树脂(UPR)为黏结剂,采用模压成型工艺制备了NG/PF/UPR双极板复合材料。研究了PF与UPR的质量比、树脂含量、成型工艺条件对复合材料电导率和弯曲强度的影响,采用差示扫描量热法进行分析。结果表明,在树脂含量为20%(质量分数,下同)、PF与UPR的质量比为6∶1、施压温度为100℃、模压压力为30 MPa、成型温度为180℃、模压时间为2 h的条件下,NG/PF/UPR双极板复合材料的电导率为336.1 S/cm,弯曲强度为46.5 MPa,对于相同条件下的NG/PF双极板复合材料,样品的电导率提高了134.9%,弯曲强度提高了21.2%。In this study,the bipolar plate composites were prepared by using a compression⁃molding technology using natural flake graphite(NG)as conductive aggregate,phenolic resin(PF)and unsaturated polyester resin(UPR)as binders.The effects of the mass ratio of PF to UPR,resin content,and molding conditions on the electrical conductivity and bending strength of the composites were studied by differential scanning calorimetry.The results indicated that the bipolar plate composites obtained an electrical conductivity of 336.1 S/cm and bending strength of 46.5 MPa at a resin content of 20 wt%with a NG/PF/UPR mass ratio of 6∶1,a pressing temperature of 100ºC,a molding pressure of 30 MPa,a molding temperature of 180ºC,and a molding time of 2 h.Compared to the NG/PF bipolar plate composite under the same processing conditions,the NG/PF/UPR bipolar plate composites exhibited an increase in electrical conductivity by 134.9%and in bending strength by 21.2%.

关 键 词：天然鳞片石墨 酚醛树脂 不饱和聚酯树脂 电导率 弯曲强度 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]