【摘要】 制备了功能化聚异丁烯-蒙脱土复合物改性的聚丙烯复合材料。考察了活化剂、加工温度等因素对改性聚丙烯性能的影响。通过扫描电镜观察了蒙脱土在改性聚丙烯中的分散效果。实验结果表明,功能化聚异丁烯-蒙脱土复合物可以较好地分散在聚丙烯中,当其用量为4 wt%、活化剂用量为蒙脱土的1 wt%时,制备的聚异丁烯-蒙脱土/聚丙烯复合材料的模量为2280 MPa、冲击强度为63 J/m,回缩率为0.5%,各项指标均好于未改性的聚丙烯树脂。分散在聚丙烯中的蒙脱土尺寸约为1μm。更多还原

【Abstract】 The composites of low molecular weight functionalized polyisobutene with montmorillonite were prepared as one of blend compatibilizers for improving the mechanical properties of polypropylene.The influences of active agent and blend temperature on the mechanical properties of the polyisobutene-montmorillonite/polypropylene composites were investigated.The SEM and TEM images of montmorillonite in the polypropylene matrix were observed.The results reveal that the montmorillonite disperses well in the polypropylene matrix because of the effect of the functionalized polyisobutene and the active agent.When 4 wt% montmorillonite and 1 wt%(of montmorillonite) active agent are used in the composites,the properties of polyisobutene-montmorillonite/polypropylene composite,such as modulus of 2280 MPa, impact strength of 63 J/m and recovery ratio of 0.5%,are obviously better than those of the pure polypropylene.The size of montmorillonite dispersed in the polypropylene matrix is about 1μm.更多还原