5种脱硫剂对废胎面胶粉脱硫效果的比较  

Comparison of desulfurization effect of ground tire rubber with five reclaiming agents

作　　者：邵景春[1] 赵素合[1] 姜广明[1] 李元虎[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《合成橡胶工业》2012年第1期49-53,共5页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(50673009);国家"八六三"课题(2006AA06Z367)

摘　　要：用二苯二硫化物(DPDS)、氨苯基二硫化物(APDS)、二(邻苯甲酰氨基)二硫化物(DBADPDS)、烯丙基二硫化物(DADS)和Delink等5种脱硫剂对废胎面胶粉进行了力化学脱硫再生。结果表明,用DBADPDS脱硫的胶粉具有较低的门尼黏度和较高的溶胶含量,脱硫效果显著。其他4种脱硫剂脱硫效果由高到低的顺序依次为DPDS、Delink、DADS及APDS。将40份(质量)脱硫胶粉填充到丁苯橡胶/炭黑复合材料中,由DBADPDS脱硫胶粉填充者具有较低的玻璃化转变温度和定伸应力及较高的扯断伸长率和拉伸强度,耐屈挠性能也比其他脱硫剂脱硫胶粉填充的胶料优异。扫描电镜照片显示DBADPDS脱硫的胶粉与基质橡胶间的界面作用较强,交联网络更均匀。Ground tire with five reclaiming agents rubber was desulfurized including diphenyldisul- fide （ DPDS ）, dapsonedisulfide （ APDS ） di （o- benzamido phenyl） disulfide （ DBADPDS ）, diallyldis- ulfide（DADS） and Delink, respectively. The results showed that the ground tire rubber desulfurizated by DBADPDS had lower Mooney viscosity and higher sol content, the desulfurization effect of which was re- markable. The desulfurization effect of the other four reclaiming agents decreased in the order of DPDS, Delink, DADS and APDS. Among the styrene-butadiene rubber （ SBR）/carbon black composites filled with 40 phr ground tire rubber which was desulfuriza- ted separately by five different reclaiming agents, the composite filled with DBADPDS desulfurizated ground tire rubber had lowest glass transition temperature and modulus at 300%, highest elongation at break and tensile strength besides excellent flexing resistance. Scanning electron microscope result showed that DBADPDS desulfurizated ground tire rubber had more intensive interracial interaction with SBR matrix. Meanwhile, the composite filled with DBADPDS des- ulfurizated ground tire rubber had more uniform crosslinked network than other composites.

关 键 词：脱硫剂 废胶粉 脱硫效果 交联密度 力学性能 耐屈挠性能 动态力学性能 微观形态 

分 类 号：TQ335[化学工程—橡胶工业]