摘要
研究天然橡胶(NR)/三元乙丙橡胶(EPDM)体系并用比与粘度比的变化对其物理性能、耐老化性能及相态结构的影响。结果表明:分别调整NR和EPDM的硫化特性并使之保持一致时,可以改善NR/EPDM并用胶的共硫化性能;NR/EPDM体系粘度比不变,NR含量越大,呈连续相态,并用胶的耐老化性能越差;NR/EPDM体系并用比不变,EPDM粘度越低,容易成为连续相态,并用胶的耐老化性能明显提升。
The effects of blend ratio and viscosity ratio of NR/EPDM on the physical property,aging resistance and phase structure of the blend were investigated. The results showed that,the co-vulcanization of NR/EPDM blend could be improved by adjusting the curing characteristics of EPDM and NR. When the viscosity ratio of NR/EPDM blend was unchanged,with the addition level of NR increasing,NR formed the continuous phase and the aging resistance of the blend was reduced. When the blend ratio of NR/EPDM was unchanged,with the viscosity of EPDM decreasing,EPDM formed the continuous phase and the aging resistance of the blend was improved.
出处
《橡胶工业》
CAS
2016年第11期645-649,共5页
China Rubber Industry
基金
国家高技术研究发展计划("863"计划)项目(2012AA03A209)
