炭黑与NR/BR/EPDM共混胶混炼工艺研究  

Effect of mixing procedure on properties of NR/BR/EPDM blend

作　　者：张兆红[1] 徐云慧[1] 邢立华[1] 

机构地区：[1]徐州工业职业技术学院,江苏徐州221140

出　　处：《弹性体》2011年第5期60-63,共4页China Elastomerics

摘　　要：研究了混炼工艺对天然橡胶(NR)/顺丁橡胶(BR)/三元乙丙橡胶(EPDM)共混胶性能的影响。结果表明:炭黑预混入EPDM的混炼工艺可以改善NR/BR/EPDM共混胶的流动性,改善炭黑的分散程度,提高胶料的物理机械性能和耐屈挠疲劳性,预混入炭黑量以20%～50%(质量分数)较为合理;采取50%比例的硫化剂、促进剂、活性剂预混入EPDM的工艺方法能有效改善NR/BR/EPDM的共硫化性,显著提高胶料的物理机械性能和耐屈挠疲劳性。The effect of mixing procedure on properties of NR/BR/EPDM blend was investigated.The results showed that the flowability of the stock,the distribution of Carbon Black（CB）,the mechanical property and flexibility were improved when CB was premixed into EPDM.The reasonable quantity of premixed CB was 25%~50%.To get the co-cure effectivity,50% of vulcanizing agent,accelerator and activator were premixed into EPDM compound,the flexibility and mechanical property were improved obviously.

关 键 词：NR BR EPDM 混炼工艺 

分 类 号：TQ330.11[化学工程—橡胶工业]