三元乙丙橡胶/二元乙丙橡胶并用胶的性能研究  

Study on Properties of EPDM/EPM Blends

作　　者：张为健 吕同策 刘丰嘉 刘晓 刘莉[1] 张保岗[1] ZHANG Weijian;LYU Tongce;LIU Fengjia;LIU Xiao;LIU Li;ZHANG Baogang(Qingdao University of Science and Technology,Qingdao 266042,China;Changyu Sealing Products Co.,Ltd,Laiyang 265200,China;Qingdao Haishengtai Materials Co.,Ltd,Qingdao 266111,China)

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042 [2]山东莱阳市昌誉密封产品有限公司,山东莱阳265200 [3]青岛海晟泰材料有限公司,山东青岛266111

出　　处：《橡胶工业》2024年第11期818-823,共6页China Rubber Industry

基　　金：国家自然科学基金资助项目(51972185)。

摘　　要：研究不同并用比的三元乙丙橡胶(EPDM)/二元乙丙橡胶(EPM)并用胶的性能。结果表明:随着EPM用量的增大,EPDM/EPM并用胶的交联密度、100%定伸应力和拉伸强度减小,拉断伸长率增大,耐热氧老化性能提高,在低温段的硬度增大,在高温段的硬度减小;随着温度的升高,不同并用比的EPDM/EPM并用胶的100%定伸应力先减小后增大,拉伸强度和拉断伸长率减小;随着EPDM用量的增大,EPDM/EPM并用胶的差示扫描量热曲线结晶峰和熔融峰向低温区移动且变宽,峰面积减小。The properties of ethylene-propylene-diene rubber(EPDM)/ethylene-propylene rubber(EPM)blends with different blending ratios were investigated.The results showed that,with the increasing of EPM dosage,the crosslinking density,the tensile stress at 100%elongation and tensile strength of the EPDM/EPM blend decreased,the elongation at break increased,the thermal oxygen aging resistance was improved,while the hardness increased in the low-temperature range and decreased in the high-temperature range.As the temperature increased,the tensile stresses at 100%elongation of EPDM/EPM blends with different blending ratios first decreased and then increased,while the tensile strengths and elongations at break decreased.As the increasing of EPDM dosage,the crystallization and melting peaks of the differential scanning calorimetry(DSC)curve of the EPDM/EPM blend shifted towards the low-temperature zone and became wider,and peak areas decreased.

关 键 词：三元乙丙橡胶 二元乙丙橡胶 拉伸性能 硬度 耐热氧老化性能 

分 类 号：TQ333.4[化学工程—橡胶工业]