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首页> 外文期刊>Journal of Applied Polymer Science >PP/ELASTOMER/FILLER HYBRIDS .2. MORPHOLOGIES AND FRACTURE
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PP/ELASTOMER/FILLER HYBRIDS .2. MORPHOLOGIES AND FRACTURE

机译：PP /弹性体/填充物混合物.2。形态学和断裂

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摘要

Three microstructures of polypropylene (PP)/elastomer/filler hybrids were obtained by processing control and elastomer or PP surface modification: (a) filler and elastomer particles are dispersed in a PP matrix to form separate particles; (b) elastomer particles with a filler core are distributed in a PP matrix; or (c) there are mixed microstructures of (a) and (b). Morphologies and fracture of different components and microstructures were studied by SEM. When the lower-temperature cut samples were carefully etched, the differences between the various microstructures were clearly observed under SEM. The core-shell microstructure provided an elastomer interlayer between the filler and the PP matrix, which resulted in changing the fracture mechanism from microcrack to shear yield. The SEM micrographs were digitized and analyzed by IMAGE 1.52. Rubber particle size and distribution were studied. The relationship between the morphologies and mechanical properties, especially the brittle-toughness transition, was discussed. DSC was used to confirm the difference of microstructures, crystallization behavior, and compatibility. (C) 1996 John Wiley & Sons, Inc. [References: 7]
机译：通过加工控制和弹性体或PP表面改性，获得了聚丙烯（PP）/弹性体/填料杂化物的三种微观结构：（a）将填料和弹性体颗粒分散在PP基体中形成单独的颗粒; （b）将具有填料核的弹性体颗粒分布在PP基质中; （c）有（a）和（b）的混合微观结构。用SEM研究了不同成分和微观结构的形貌和断裂。当仔细蚀刻较低温度切割的样品时，在SEM下清楚地观察到各种微观结构之间的差异。核壳结构在填料和PP基体之间提供了一个弹性体夹层，从而使断裂机理从微裂纹转变为剪切屈服。将SEM显微照片数字化并通过IMAGE 1.52进行分析。研究了橡胶的粒径和分布。讨论了形貌与力学性能之间的关系，特别是脆性-韧性转变。 DSC用于确认微观结构，结晶行为和相容性的差异。 （C）1996 John Wiley＆Sons，Inc. [参考：7]

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