摘要
用丁腈橡胶(NBR)、丁苯橡胶(SBR)和三元乙丙橡胶(EPDM)作主体材料,制备橡胶/超细全硫化粉末丁腈胶乳(UFPNBR)/蒙脱土(MMT)复合材料和橡胶/有机MMT(OMMT)复合材料,并研究其微观相态、物理性能和气密性。结果表明:在橡胶/UFPNBR/MMT复合材料中,MMT以剥离状态分散在橡胶基体中;在NBR/OMMT复合材料中,OMMT层间距较大;添加UFPNBR/MMT粉末和OMMT的橡胶/MMT复合材料物理性能和气密性随着MMT用量增大而提高;添加UFPNBR/MMT粉末和OMMT的SBR/MMT复合材料物理性能和气密性提高幅度比NBR/MMT复合材料小;OMMT对EPDM有明显的补强作用,UFPNBR/MMT粉末对EPDM几乎没有补强作用;与添加UFPNBR/MMT(质量比为1/4)粉末的EPDM/MMT复合材料相比,添加UFPNBR/MMT(质量比为1/1)粉末的EPDM/MMT复合材料气密性更好。
Rubber/ultrafine fully vulcanized nitrile rubber （UFPNBR） /montmorillonite （ MMT ） composites and rubber/organic MMT （OMMT） composites were prepared by using nitrile rubber （NBR） , styrene butadiene rubber （SBR） and ethylene propylene diene monomer rubber （EPDM） as matrix materials. The microstructure and morphology,physical properties and air tightness of the composites were investigated. The results showed that MMT was exfoliated in the rubber matrix in the rubber/UFPNBR/MMT composites. In the NBR/OMMT composites, the OMMT interlayer spacing was large. The physical properties and air tightness of the composites were improved when the addition amount of MMT was increased, but the improvement of the SBR/MMT composites was less than that of NBR/MMT. It was found that OMMT presented significant reinforcement on EPDM rubber. However, UFPNBR/MMT powder showed very little reinforcement on EPDM. Compared with the EPDM/UFPNBR/MMT composites with a weight ratio of UFPNBR and MMT at 1/4, the air tightness of the EPDM/UFPNBR/MMT composites with a weight ratio of
出处
《橡胶科技》
2017年第7期24-32,共9页
Rubber Science and Technology
关键词
蒙脱土
超细全硫化粉末丁腈胶乳
丁腈橡胶
丁苯橡胶
三元乙丙橡胶
微观相态
气密性
montmorillonite
ultrafine fully-vulcanized powder nitrile rubber
nitrile rubber
styrenebutadiene rubber
ethylene propylene diene monomer rubber
microstructure and morphology
air tightness
