摘要
采用熔融插层法制备了有机蒙脱土(OMMT)/聚氯乙烯(PVC)/丁腈橡胶(NBR)纳米复合材料,研究了复合材料的结构,考察了OMMT填充量对复合材料物理机械性能、耐热性能及耐溶剂性能的影响。结果表明,OMMT在复合材料中实现了纳米级分散,且极性PVC大分子在剪切力和热的作用下插入OMMT层间,形成PVC-OMMT纳米复合材料;随着OMMT填充量的增加,OMMT/PVC/NBR纳米复合材料的拉伸强度、300%定伸应力均先升高后降低,扯断伸长率降低,邵尔A硬度和永久变形呈增大的趋势,回弹性变化不大,耐溶剂性能先提高后降低;OMMT/PVC/NBR复合材料的耐热性能优于未填充OMMT复合材料。
The organic montmorillonite （OMMT） / polyvinyl chloride （ PVC ）/nitrile rubber （ NBR ） nanocomposites were prepared by melting intercalation. The structure of the nanoeomposites was studied. The effect of OMMT amount on the mechanical properties, thermal resistance and solvent resistance of the nanocomposites was investigated. The results showed that the OMMT was in dispersed in the composites matrix, and polarized PVC macromoleeules were intercalated into layers of OMMT by shearing and heating, to form PVC/OMMT nanocomposites. With increasing OMMT amount, the tensile strength and modulu at 300% of the nanocomposites first increased and then decreased, elongation at break decreased, while the Shore A hardness and permanent set increased, the resilience changed little, and solvent resistance first increased and then decreased. The thermal resistance of the nanocomposites was better than that of unfilled one.
出处
《合成橡胶工业》
CAS
CSCD
2010年第3期229-232,共4页
China Synthetic Rubber Industry
关键词
丁腈橡胶
聚氯乙烯
有机蒙脱土
熔融插层
纳米复合材料
物理机械性能
耐热性能
耐溶剂性能
nitrile rubber
polyvinyl chloride
organic montmorillonite
melting intercalation
nanocomposite
mechanical property
thermal resistance
solvent resistance
