核壳结构橡胶粒子增韧PA6/MMT体系的研究
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摘要
采用乳液聚合的方法制备了不同核壳比的甲基丙烯酸甲酯-丁二烯-苯乙烯(MBS)核壳橡胶粒子。引入双酚A型的环氧树脂(DGEBA)作为增容剂,将其用于PA6/有机化蒙脱土(PA6/OMMT)纳米复合体系进行增韧。将得到的纳米复合材料通过透射电镜(TEM)、X射线衍射(XRD)、扫描电镜(SEM)和力学性能测试进行分析,结果表明,在PA6/MMT/DGEBA/MBS体系中,核壳橡胶粒子的壳层厚度影响着橡胶相在基体中的分散和复合体系的韧性。
Methyl methacrylate-butadiene-styrene copolymers( MBS) with different core-shell ratios were prepared by emulsion polymerization. Then bisphenol an epoxy resin( DGEBA) was used as a compatibilizer. The core-shell structure rubber particles and OMMT were used to toughen and strengthen the nylon 6/organic montmorillonite( PA6/OMMT) nanocomposite system. The obtained nanocomposites were analyzed by X-ray diffraction( XRD),scanning electron microscopy( SEM) and transmission electron microscopy( TEM). The results showed that in the PA6/MMT/MBS system,the shell thickness affected the dispersion of the rubber phase in the matrix and the toughness of the composite system.
Methyl methacrylate-butadiene-styrene copolymers( MBS) with different core-shell ratios were prepared by emulsion polymerization. Then bisphenol an epoxy resin( DGEBA) was used as a compatibilizer. The core-shell structure rubber particles and OMMT were used to toughen and strengthen the nylon 6/organic montmorillonite( PA6/OMMT) nanocomposite system. The obtained nanocomposites were analyzed by X-ray diffraction( XRD),scanning electron microscopy( SEM) and transmission electron microscopy( TEM). The results showed that in the PA6/MMT/MBS system,the shell thickness affected the dispersion of the rubber phase in the matrix and the toughness of the composite system.
引文
[1] Dasari A,Lim S H,Yu Z Z,et al. Fracture properties and mechanisms of polyamide/clay nanocomposites[J]. Nano-and Mircro-Mechanics of Polymer Blends and Composites,2009:377-423.
[2] Chow W S,Bakar A A,Ishak Z A M,et al. Effect of maleic anhydridegrafted ethylene-propylene rubber on the mechanical,rheological and morphological properties of organoclay reinforced polyamide 6/polypropylene nanocomposites[J]. European Polymer,2005,41(4):687-696.
[3] Yoo Y,Cui L,Yoon P J,et al. Morphology and mechanical properties of rubber toughened amorphous polyamide/MMT nanocomposites[J].Macromolecules,2010,43(2):615-624.
[4] Tjong S C,Bao S P. Impact essential work of fracture of polypropylene/montmorillonite nanocomposites toughened with SEBS-g-MA elastomer[J]. Composites. Part A(Applied Science and Manufacturing),2007,38(2):378-387.
[5]赵保林,那平,刘剑锋.改性蒙脱土的研究进展[J].化学工业与工程,2006,23(5):453-457.
[6]王锦成,陈月辉,金棋奇,等.橡胶/有机蒙脱土纳米复合材料的研究进展[J].上海工程技术大学学报,2005,19(2):133-139.
[7] Harada T,Carone E J,Kudva R A,et al. Effects of adding an imidized acrylic polymer to super tough nylon 6 on stiffness and toughness[J].Polymer,1999,40(14):3957-3969.
[8] Lu M,Keskkula H,Paul D R. Toughening of nylon 6 with core-shell impact modifiers-effect of matrix molecular weight[J]. Applied Polymer Science,1996,59(9):1467-1477.
[9] Winardi A,Yuan M,Gong S,et al. Core-cell rubber modified microcelluar polyamide-6 composite[J]. Journal of celluar plastics,2004,40(5):383-395.
[10] Sun S Y,He Y D,Wang X D,et al. Facile preparation of nylon 6nanocomposites based on clay reinforcement and core-shell latex toughening:morphology,properties,and impact fracture behavior[J].Journal of Applied Polymer Science,2011,121:541-553.
[2] Chow W S,Bakar A A,Ishak Z A M,et al. Effect of maleic anhydridegrafted ethylene-propylene rubber on the mechanical,rheological and morphological properties of organoclay reinforced polyamide 6/polypropylene nanocomposites[J]. European Polymer,2005,41(4):687-696.
[3] Yoo Y,Cui L,Yoon P J,et al. Morphology and mechanical properties of rubber toughened amorphous polyamide/MMT nanocomposites[J].Macromolecules,2010,43(2):615-624.
[4] Tjong S C,Bao S P. Impact essential work of fracture of polypropylene/montmorillonite nanocomposites toughened with SEBS-g-MA elastomer[J]. Composites. Part A(Applied Science and Manufacturing),2007,38(2):378-387.
[5]赵保林,那平,刘剑锋.改性蒙脱土的研究进展[J].化学工业与工程,2006,23(5):453-457.
[6]王锦成,陈月辉,金棋奇,等.橡胶/有机蒙脱土纳米复合材料的研究进展[J].上海工程技术大学学报,2005,19(2):133-139.
[7] Harada T,Carone E J,Kudva R A,et al. Effects of adding an imidized acrylic polymer to super tough nylon 6 on stiffness and toughness[J].Polymer,1999,40(14):3957-3969.
[8] Lu M,Keskkula H,Paul D R. Toughening of nylon 6 with core-shell impact modifiers-effect of matrix molecular weight[J]. Applied Polymer Science,1996,59(9):1467-1477.
[9] Winardi A,Yuan M,Gong S,et al. Core-cell rubber modified microcelluar polyamide-6 composite[J]. Journal of celluar plastics,2004,40(5):383-395.
[10] Sun S Y,He Y D,Wang X D,et al. Facile preparation of nylon 6nanocomposites based on clay reinforcement and core-shell latex toughening:morphology,properties,and impact fracture behavior[J].Journal of Applied Polymer Science,2011,121:541-553.