应用耗散粒子动力学(DPD)模拟方法研究不同共混比PP/PA6的介观相貌及动力学演变过程.加入适量PP-g-PA6后比较研究PP-g-PA6作为相容剂对PP/PA6在不同混合比下相形态的影响.发现在一定混合比下加入少量PP-g-PA6能改变PP/PA6的介观形貌.此外,为研究不同添加量PP-g-PA6对PP/PA6相容性的影响,相对PP和PA6总量分别为2％,4％,6％,8％和10％的PP-g-PA6被加入到90PP/10PA6体系中.结果发现少量的PP-g-PA6能降低共混体系界面张力,提高共混相容性,但是过量的PP-g-PA6会使得体系PA6发生相溶胀从而使体系界面张力变大,不利于体系相相容.%Dissipative particle dynamics (DPD) is used to investigate the mesoscopic appearance and dynamic evolution process of polypropylene/polyamide 6 (PP/PA6) blends.The effect of PP-g-PA6 as a compatibilizer on the morphology of PP/PA6 under different mixing ratios were studied by adding proper amount of PP-g-PA6,and found that PP-g-PA6 can changed the mesoscopic morphology of PP/PA6 blends under a certain mixing ratio.Besides,2％,4％,6％,8％ and 10％ PP-g-PA6 were added to investigate the effect of different PP-g-PA6 on 90PP/10PA6 blends,respectively.The results showed that a small amount of PP-g-PA6 can reduce the interfacial tension and improve the compatibility,but too much PP-g-PA6 made the phase of PA6 swell and made the total interfacial tension of the system becomes larger,which was not good for phase fusion.
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