苯乙烯-二乙烯苯共聚物小球经浓硫酸磺化后,在苯环上形成磺酸基,高温下,能使树脂内的磺酸基与邻近苯环发生脱水反应,产生砜基团,从而造成树脂内的附加交联,提高树脂对热的稳定性。因而磺化苯乙烯-二乙烯苯共聚物在惰性气体保护下得以顺利进行高温裂解, Styrene - divinylbenzene copolymer beads sulfonated by concentrated sulfuric acid, the formation of sulfonate groups on the benzene ring, under high temperature, the resin can be sulfonic acid groups and the adjacent benzene ring dehydration reaction, resulting in sulfone groups, Resulting in additional cross-linking within the resin to increase the resin’s thermal stability. Thus sulfonated styrene - divinylbenzene copolymer under inert gas to be successfully carried out under high temperature cracking,