Especially the benzene ring of polystyrene cation exchange resin varies slowly.Therefore the graphite degree of carbonized product of polystyrene cation exchange resin is getting low comparatively.

• 特别是聚苯乙烯阳离子交换树脂的苯环结构基团变化也较缓慢，碳化产物的石墨化程度较低。