采用高特福毛细管流变仪测试胶料流动性的研究  

Research on Fluidity Test of Rubber Compounds by GOTTFERT Capillary Rheometer

作　　者：陈国富 李安庆 丁祥 李卫国 CHEN Guofu;LI Anqing;DING Xiang;LI Weiguo(Shandong Jinyu Tire Co.,Ltd,Dongying 257000,China)

机构地区：[1]山东金宇轮胎有限公司,山东东营257000

出　　处：《橡胶科技》2025年第1期52-56,共5页Rubber Science and Technology

摘　　要：采用高特福RCR20型毛细管流变仪(简称RCR20流变仪)在较高的剪切速率下测试胶料的流动性,考察测试条件和判定指标。结果表明:RCR20流变仪输出曲线中最大挤出速率不能代表挤出稳定时的最大速率,不能作为判定胶料流动性的标准;随着挤出压力的增大,挤出速率和剪切速率增大,且数据更加稳定;结合标准偏差及波动值,可将50~100 s平均挤出速率作为流动性数据稳定的判定指标;根据RCR20流变仪测出的流动性数据可对不同配方胶料的混炼工艺进行优化,其比门尼粘度仪检测更加灵敏。The fluidity of the rubber compound was tested at higher shear rates using the GOTTFERT RCR20 capillary rheometer(referred to as RCR20 rheometer),and the testing conditions and judgment indicators were studied.The test results showed that,the maximum extrusion rate in the RCR20 rheometer output curve could not represent the maximum rate at which extrusion was stable,and could not be used as a standard for judging the fluidity of rubber compound.As the extrusion pressure increased,the extrusion rate and shear rate increased and the data became more stable.By combining the standard deviation and fluctuation values,the average extrusion rate of 50~100 s could be used as a criterion for determining the stability of fluidity data.According to the fluidity data measured by the RCR20 rheometer,the mixing process of different formulas could be optimized,which was more sensitive than the Mooney viscosity machine detection.

关 键 词：混炼胶 流动性 门尼粘度 毛细管流变仪 

分 类 号：TQ330.7[化学工程—橡胶工业]