^(13)C-NMR表征DGEBA环氧树脂的微观链结构

The Characterization of the Microstructure of DGEBA Epoxy Resins by Carbon-^(13) NMR

通过最佳定量条件的选择,在FT-80A NMR谱仪上获得了五种商品牌号DGEBA环氧树脂的^(13)C谱。谱峰的精细差别反映了样品微观链结构的差异。通过平均聚合度(?),数均分子量(?)_n,环氧端基对整个端基比值EER,以及环氧当量值EEW,定量地揭示了不同样品的微观链结构。

Carbon-^(13) NMR spectra of five DGEBA epoxy resins were obtained on FT-80A NMR Spectrometer with quantitative method. The differences of sample microstructures were shown by fine differences of spectral lines. The microstructures of samples were quantitatively characterized by the determinations of D,., EER and EEW.