不同再生温度再生橡胶对天然橡胶性能的影响  

Effect of Devulcanization Temperature on the Properties of Reclaimed Rubber/NR Blends

作　　者：孙鹏[1] 徐云慧[1] 朱信明[1] 王艳秋[1] 刘希春[1] 丛后罗[1] 

机构地区：[1]徐州工业职业技术学院江苏省橡胶循环利用工程技术研究开发中心,江苏徐州221140

出　　处：《橡胶科技》2016年第1期10-13,共4页Rubber Science and Technology

基　　金：江苏省高校"青蓝工程"资助项目(QLGC-2013-03);徐州市科技情报项目(XKQ035)

摘　　要：采用自制脱硫罐,在不同温度下对全轮胎胶粉进行再生,将制得的再生橡胶与天然橡胶(NR)并用,研究再生橡胶对NR性能的影响。结果表明:NR与再生橡胶并用,混炼胶的FL减小,硫化程度(F_(max)-F_L)先增大后减小,t10和t90缩短,硫化胶的硬度和100%定伸应力提高;随着再生橡胶再生温度升高,混炼胶的硫化速率变化不大,门尼粘度略有减小,硫化胶的拉伸强度和拉断伸长率先减小后增大,加入再生温度为230℃的再生橡胶硫化胶拉伸强度和拉断伸长率均较大,再生温度对硫化胶的硬度和100%定伸应力影响不大。In this study, the recycled tire rubber powder was devulcanized using a desulfurization tank at different temperatures and the reclaimed rubber was blended with NR. The effect of devulcanization temperature on the properties of reclaimed rubber/NR blends was investigated. The experimental results showed that,when NR was blended with reclaimed rubber,the minimum torque （FL） of the compound during curing decreased, the vulcanization degree （Fmax-FL） firstly increased and then decreased with the increase of the reclaimed rubber amount, the scorch time and cure time were shortened, and the hardness and modulus at 100% elongation of the vulcanizates increased. It was found that when the devulcanization temperature increased, the cure rate of the blended compound changed little, the Mooney viscosity decreased slightly, the tensile strength and elongation at break of the vulcanizates firstly decreased and then increased. When the devulcanization temperature was 230 ℃, the tensile strength was high and elongation at break was large. The develcanization temperature had little effect on the hardness and modulus of the vulcanized blends.

关 键 词：再生温度 再生橡胶 天然橡胶 并用 轮胎胶粉 

分 类 号：TQ332[化学工程—橡胶工业]