The chemical change of four resole type phenol-formaldehyde resins in curing process was studied by infra-redspectroscopy.
用红外光谱法研究了四种热固性酚醛树脂在固化过程中的化学变化。
2
The structure of this monomer were confirmed by means of Elements Analysis, Fourier transform infra-redspectroscopy (FT-IR), 1H NMR.
其后又通过元素分析，1H-NMR和IR等方法，对该单体结构进行了结构表征。
3
The surface modification results were analysed by the methods of the specific surface area measurement and infrared absorption spectroscopy, and the best conditions for modification were obtained.