首页> 外文会议>International Conference on Deformation, Yield and Fracture of Polymers; 20000410-20040413; Cambridge; GB >Investigation of toughening mechanism in polymer-nanocomposites based on layered silicate/semicystalline polymers
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Investigation of toughening mechanism in polymer-nanocomposites based on layered silicate/semicystalline polymers

机译:基于层状硅酸盐/半胱氨酸聚合物的聚合物-纳米复合材料的增韧机理研究

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Polymer nanocomposites based on layered silicate and semicrystalline polymers (PA-12, PP) were prepared to examine their morphology, and to find out the role of nanofiller particles during the deformation processes. Morphological studies by TEM show that the regularly intercalated layered silicates are locally stacked in the PA-12 and PP matrices, and the fine lamellae are perpendicularly oriented nearly at the interfaces of layered silicates. From the studies of in-situ deformation it has been found that the main energy dissipating processes during deformation is the microvoid formation inside the stacked layered silicates. During deformation processes, the nanofiller particles are load-bearing by connecting of surfaces in the microvoids and hinder further growing of the microvoids. As a consequence the stiffness/strength/toughness balance has been synergistically achieved.
机译:制备了基于层状硅酸盐和半结晶聚合物(PA-12,PP)的聚合物纳米复合材料,以检查它们的形态,并找出纳米填料颗粒在变形过程中的作用。 TEM的形态学研究表明,规则插层的层状硅酸盐局部堆叠在PA-12和PP基质中,细薄片几乎垂直于层状硅酸盐的界面取向。通过对原位变形的研究,发现变形过程中的主要耗能过程是在叠层硅酸盐内部形成微孔。在变形过程中,纳米填料颗粒通过连接微孔中的表面来承受载荷,并阻碍了微孔的进一步生长。结果,已经协同地实现了刚度/强度/韧性平衡。

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