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首页> 外文期刊>Journal of Applied Polymer Science >Carbon/carbon composites derived from poly(ethylene oxide)-modified novolac-type phenolic resin: Microstructure and physical, and morphological properties
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Carbon/carbon composites derived from poly(ethylene oxide)-modified novolac-type phenolic resin: Microstructure and physical, and morphological properties

机译：由聚环氧乙烷改性的酚醛清漆型酚醛树脂衍生的碳/碳复合材料：微观结构和物理形态特征

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摘要

A poly(ethylene oxide) (PEO) novolac-type phenolic resin blend was prepared by the physical blending method. The modified novolac-type phenolic resin with various PEO contents was used as a matrix precursor to fabricate carbon/carbon composites. The effect of the PEO/phenolic resin mixing ratio on the change of the density and of the porosity was studied. The flexural strength and interlaminar shear strength of the PEO/phenolic resin blend-derived carbon/carbon composites were also investigated. The results show that the density of the PEO/phenolic resin blend-derived carbon/carbon composites decreases with the PEO content. The X-ray diffraction and Raman spectra studies showed that the carbon fiber in the samples will affect the growth of the ordered carbon structure. From SEM morphological observation, it is shown that the fracture surface of specimens is smooth. Also, there is less fiber pull-out and fiber breakage on the fracture surface. (C) 2002 Wiley Periodicals, Inc. [References: 14]
机译：通过物理共混法制备聚环氧乙烷（PEO）线型酚醛树脂共混物。将具有各种PEO含量的改性酚醛清漆型酚醛树脂用作基质前体，以制备碳/碳复合材料。研究了PEO /酚醛树脂混合比对密度和孔隙率变化的影响。还研究了PEO /酚醛树脂共混物衍生的碳/碳复合材料的弯曲强度和层间剪切强度。结果表明，源自PEO /酚醛树脂共混物的碳/碳复合材料的密度随PEO含量的增加而降低。 X射线衍射和拉曼光谱研究表明，样品中的碳纤维会影响有序碳结构的生长。从SEM的形态观察可知，试样的断面是平滑的。而且，在断裂表面上的纤维拉出和纤维断裂更少。 （C）2002 Wiley Periodicals，Inc. [参考：14]

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