均匀化工艺参数对天然橡胶理化性能的影响  

Influence of Homogenization Process Parameters on Physicochemical Properties of NR

作　　者：刘丽 贾爱瑞 卢媛 路官山 张丽杰[1] LIU Li;JIA Airui;LU Yuan;LU Guanshan;ZHANG Lijie(Shandong Linglong Tire Co.,Ltd,Zhaoyuan 265400,China)

机构地区：[1]山东玲珑轮胎股份有限公司,山东招远265400

出　　处：《橡胶工业》2025年第1期53-61,共9页China Rubber Industry

摘　　要：对照GB/T 15340—2008的均匀化工艺,从开炼机辊温、辊距和过辊次数考察均匀化工艺参数对天然橡胶(NR)理化性能的影响,并验证优化均匀化方案的适用性。结果表明:在NR均匀化过程中,辊温对室温没有依赖性,室温不需严格控制;NR的理化性能对辊距不敏感,对过辊次数较敏感,过辊6次的NR的门尼粘度接近未均匀化的NR的门尼粘度,NR的优化均匀化方案为辊距(1.7±0.17)mm,辊温(25±5)℃,过辊次数6;采用优化均匀化方案与采用GB/T 15340—2008的均匀化工艺的NR的挥发分含量、塑性保持率和硫化特性没有明显差异;采用优化均匀化方案均匀化的NR的门尼粘度[ML(1+4)100℃]明显增大,优化均匀化方案在国内实验室适用,所加工的NR的均匀性和重复性均较好。With reference to the homogenization process of GB/T 15340—2008,the influence of homogenization process parameters on the physicochemical properties of natural rubber(NR)was investigated in terms of roll temperature,roll distance and number of roll passes through the rollers in open mill,and the applicability of the optimized homogenization scheme was verified.The results showed that,during the homogenization process,the roller temperature had no dependence on the room temperature,so that the room temperature did not need to be strictly controlled.The physicochemical properties of NR were not sensitive to the roller distance,but were more sensitive to the number of passes through the rollers.The Mooney viscosity of NR after 6 passes through the rollers was close to that of NR without homogenization.The optimized homogenization scheme for NR was roller distance of(1.7±0.17)mm,roller temperature of(25±5)℃and passes through the rollers of 6.There was no significant difference in the volatile matter content,plasticity retention and vulcanization characteristics of NR homogenized by the optimized homogenization scheme and the homogenization process of GB/T 15340—2008.The Mooney viscosity[ML(1+4)100℃]of NR homogenized by the optimized homogenization scheme was significantly improved.The optimized homogenization scheme was applicable in domestic laboratories,and the processed NR had good uniformity and repeatability.

关 键 词：天然橡胶 均匀化 工艺参数 理化性能 

分 类 号：TQ332.1[化学工程—橡胶工业]