废旧轮胎橡胶的常温粉碎及性能研究  

Pulverization of Waste Tire Rubber at Ambient Temperature and Its Characterization

作　　者：隋建波[1] 向东[1] 牟鹏[1] 段广洪[1] 

机构地区：[1]清华大学精密仪器与机械学系制造工程研究所,北京100084

出　　处：《橡胶工业》2012年第1期33-37,共5页China Rubber Industry

基　　金：国家自然科学基金资助项目(50875142)

摘　　要：采用盘式磨设备对废旧轮胎胎面胶颗粒进行常温粉碎,研究胶粉性能及其对丁苯橡胶(SBR)硫化胶物理性能的影响,并与胎面胶颗粒进行对比。结果表明:常温粉碎胶粉的粒径比胎面胶颗粒降低了一个数量级,形状更加不规则且表面粗糙;动盘和定盘相对转速对常温粉碎胶粉粒径及其分布影响不大,但动盘和定盘间隙影响较大;常温粉碎胶粉的热稳定性比胎面胶颗粒低,且交联密度减小一半以上;与胎面胶颗粒相比,添加常温粉碎胶粉的SBR硫化胶的拉断伸长率有很大提高,但邵尔A型硬度、100%和300%定伸应力以及拉伸强度有所减小。A pan mill was introduced to pulverize waste tire tread rubber particles at ambient temperature,and the characteristics of rubber powder and its effect on the mechanical properties of SBR vulcanizate were investigated and compared with those of waste tire tread rubber particle. The results showed that,the size of rubber powder after pulverization process was reduced by one order of magnitude, and the shape was more irregular and the surface roughness was higher compared with original particles. The diameter and its distribution of rubber powder were not strongly affected by relative rotate speed between kinetic mill plane and static mill plane of the pan mill, but greatly affected by clearance between them. Thermal stability of rubber powder was decreased and the crosslink density was reduced by more than half. Compared with tire tread rubber particle, the elongation at break of SBR vulcanizate filled by rubber powder was enhanced evidently,but the Shore A hardness,100% and 300% modulus and tensile strength were reduced to some extent.

关 键 词：废旧轮胎 常温粉碎 盘式磨 胶粉 

分 类 号：TQ335[化学工程—橡胶工业]