论文部分内容阅读
采用原位插层法制备苯乙烯-马来酸酐交替共聚物/蒙脱石(SMA/MMT)纳米复合材料增容PA6/ABS共混体系,并与SMA及MMT的增容效果进行比较,运用TEM、SEM、DSC及XRD研究了增容剂SMA/MMT及MMT的增容机理.结果表明,采用SMA做增容剂,体系机械性能下降;MMT可使体系拉伸强度提高,但冲击强度下降;采用SMA/MMT纳米复合材料做为增容剂,可提高共混体系的强度及韧性.TEM、XRD、DSC及SEM研究结果表明,PA6/ABS/(SMA-MMT)体系中MMT主要分布于两相界面处,ABS及PA6分子链可进入MMT层间,形成类似于共聚物结构,起到增容剂的作用,从而降低分散相粒径,增加两相界面作用力,有利于体系力学性能的提高.PA6/ABS/MMT体系中MMT主要分布于连续相PA6中,虽然对分散相粒径影响较小,但增强了PA6相强度,使得体系力学性能提高.
The in-situ intercalation method was used to prepare compatibilized PA6 / ABS blends with styrene-maleic anhydride alternating copolymer / montmorillonite (SMA / MMT) nanocomposites. The compatibilization effect with SMA and MMT was compared. The mechanism of compatibilization of compatibilizers SMA / MMT and MMT was studied by TEM, SEM, DSC and XRD.The results showed that the mechanical properties of the system decreased with SMA as compatibilizer, but the tensile strength The strength and toughness of the blends were improved by using SMA / MMT nanocomposites as compatibilizer.The results of TEM, XRD, DSC and SEM showed that MMT in PA6 / ABS / (SMA-MMT) Two-phase interface, ABS and PA6 molecular chains can enter the MMT layer, forming a similar copolymer structure, play a compatibilizer role, thereby reducing the dispersed phase size, increasing the interaction between the two-phase interface is conducive to the mechanical properties of the system The MMT in PA6 / ABS / MMT system is mainly distributed in the continuous phase PA6, although it has little effect on the particle size of the dispersed phase, the strength of the PA6 phase is enhanced and the mechanical properties of the system are improved.