酚醛纤维/芳纶浆粕电池隔膜材料的制备及其性能

Preparation and Properties of PF/AP Battery Separator Material

将酚醛纤维(PF)与芳纶浆粕(AP)以一定的比例混合抄造成纸,经过酚醛树脂甲醇溶液浸渍、热压处理得到PF/AP电池隔膜材料,研究纤维配比、酚醛树脂甲醇溶液质量分数以及热压条件对PF/AP电池隔膜材料力学性能、孔性能、热稳定性以及阻燃性能的影响.结果表明:在mPF∶mAP=4∶6、酚醛树脂甲醇溶液质量分数7%、热压温度180℃、热压压力10 MPa、热压时间3 min时,PF/AP电池隔膜材料的耐破指数为1.20 kPa·m^(2)/g,抗张指数为24.67 N·m/g.此外,PF/AP电池隔膜材料具有较高的热分解温度、优异的热尺寸稳定性以及优异的阻燃性能.

PF/AP battery separator material is a mixture of phenolic fiber and aramid pulp in a certain proportion,which is impregnated by phenolic resin methanol solution and hot pressed.The effects of fiber ratio,the mass fraction of methanol solution of phenolic resin,hot pressing conditions on the mechanical properties,pore porosity,thermal stability and flame retardancy of PF/AP battery separator material were studied.The results showed that when mPF∶mAP=4∶6,the mass fraction of methanol solution of phenolic resin was 7%,the hot pressing temperature was 180℃,the hot pressing pressure was 10 MPa and the hot pressing time was 3 min,the bursting index of PF/AP battery separator material was 1.20 kPa·m2/g and the tensile index was 24.67 N·m/g.Moreover,the PF/AP battery separator material has high thermal decomposition temperature and excellent thermal dimensional stability with excellent flame retardant properties.