煤孔结构对煤/PAN复合材料导电性能的影响

EFFECT OF PORE STRUCTURE ON THE CONDUCTIVITY OF COAL/PAN COMPOSITE

煤基聚苯胺复合导电材料是利用煤的酸性官能团特征、孔结构特征和芳香层片特征 ,以煤为模板 ,用 APS引发苯胺单体 ,在煤中原位聚合而成的 .其中煤的孔结构是影响煤 / PAN导电性能的重要因素 .选择 HNO3 ,H2 O2 氧化及苯胺抽提的方法改变煤的孔结构 ;通过电导率及孔结构分析表明 ,氧化和抽提使煤的孔结构变得发达 ,因而苯胺能更好地进入已溶胀煤的孔结构中 ,提高了煤基聚苯胺的电导率 .

Coal/PAN complexes were synthesized by aniline monomer in coal template initiated by APS,taking advantages of the aciolic functional group,pore structrue and specific aromatic ring of coal structure.Pore structure were the key factors that affect the conductivity of coal/PAN complexes.In this paper,HNO 3,H 2O 2 and aniline extraction were chosen to change the pore structure in coal.The analysis results of conductivity and pore structure indicated that the conductivity of coal/PAN was improved by oxidation and extraction,which developed the pore structure in coal,and then facilitated the process of aniline entering the swelled coal pore.