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首页> 外文期刊>Journal of Applied Polymer Science >Wide-angle X-ray scattering, Fourier transform infrared spectroscopy, and scanning electron microscopy studies on the influence of the addition of liquid functional rubber into epoxy thermoset
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Wide-angle X-ray scattering, Fourier transform infrared spectroscopy, and scanning electron microscopy studies on the influence of the addition of liquid functional rubber into epoxy thermoset

机译：广角X射线散射，傅立叶变换红外光谱和扫描电子显微镜研究对液态热固性橡胶添加到环氧热固性塑料中的影响

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Sophisticated analytical methods (viz. wide-angle X-ray scattering, Fourier transform infrared spectroscopy, and scanning electron microscopy have been applied to investigate the mechanism of toughening of epoxy cresol novolac resin due to the addition of carboxy-terminated polybutadiene (CTPB) liquid functional rubber. The average molecular interchain spacing < R > in Angstroms of neat epoxy and epoxy-rubber blends were calculated from the strong maximum in the diffraction scan using established equations. The half-width < HW > of the maximum was used to qualitatively describe the distribution of < R >. An increase in < R > value signifies formation of a separate packing order, as well as an increase in the free volume which, however, varies with the extent of compatibilization between epoxy cresol novolac and CTPB. Fourier transform infrared studies convincingly establish the crosslinking between the oxirane group of epoxy and the carboxyl group of CTPB as reflected in the characteristic peak shifts in the blends, compared with individual polymers. The merger of several peaks of individual polymers, as well as the appearance of minor peaks elsewhere, were also evident. Scanning electron microscopy studies have also been undertaken to study the phase morphology development, as well as changes in the fracture surface topography with varied CTPB content. (C) 1998 John Wiley & Sons, Inc. [References: 34]
机译：复杂的分析方法（即广角X射线散射，傅立叶变换红外光谱和扫描电子显微镜）已用于研究由于添加了羧基端基聚丁二烯（CTPB）液体而导致的环氧甲酚酚醛清漆树脂的增韧机理使用建立的方程式，通过衍射扫描中的强最大值，计算出纯环氧和环氧-橡胶混合物的平均分子链间距，以埃为单位，以半角定性描述。 的分布。值的增加表示形成单独的装箱顺序，并且增加自由体积，但是该体积随环氧甲酚酚醛清漆和CTPB之间增容程度的不同而变化。红外研究令人信服地确定了环氧乙烷的环氧乙烷基与CTPB的羧基之间的交联与单独的聚合物相比，共混物中的峰峰值发生了变化。单个聚合物的几个峰的合并以及其他地方出现的小峰也很明显。还进行了扫描电子显微镜研究，以研究相形态的发展，以及随着CTPB含量的变化而引起的断裂表面形貌的变化。 （C）1998 John Wiley＆Sons，Inc. [参考：34]

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