废旧轮胎橡胶的常温应力诱导固相力化学脱硫化研究  

Studies on the Stress-Induced Mechanochemical Devulcanization of Waste Tire Rubber in Solid State at Ambient Temperature

作　　者：张新星[1] 卢灿辉[1] 梁梅[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2006年第6期118-121,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金项目(50233010);国家863计划课题(2003AA322080)

摘　　要：利用固相力化学反应器实现对废旧轮胎橡胶的常温力化学脱硫化。实验结果,表明胶粉的交联密度和凝胶含量随碾磨次数增加显著降低,通过碾磨,再硫化橡胶的力学性能得到显著提高。碾磨40次后,拉伸强度由碾磨前2.3 M Pa提高到10.9 M Pa;断裂伸长率由碾磨前的69.6%提高到290.0%。再硫化胶的断面形貌分析表明,用脱硫胶制得的胶片具有良好的界面结合。The stress-induced mechanochemical devulcanization of waste tire rubber at ambient temperature can be achieved through pan-milling. The crosslinking density and gel fraction of waste tire rubber decreases with increasing cycles of pan-milling. The mechanical properties of revulcanized rubber increase remarkably through pan-milling. After pan-milled 40 cycles, the tensile strength of revulcanized rubber increases from 2.3 MPa to 10.9 MPa, the elongation at break increases from 69.6% to 290%. The SEM observation ofcryo-fractured surface of revulcanized rubber indicates that the mechanochemically devulcanized rubber shows much better interfacial adhesion.

关 键 词：脱硫化 力化学 废旧轮胎橡胶 固相 

分 类 号：TQ319[化学工程—高聚物工业]