红外光谱法快速测定彩涂钢板氟碳涂料中PVDF的含量  

Quantitative Aanalysis Of PVDF Content In Fluorocarbon Coatings by FTIR

作　　者：孙鑫[1] 李瀚文[1] 施丁豪[1] 丁继文[1] 陆航[1] 胡和丰[1] 万梅[1] 

机构地区：[1]上海大学材料科学与工程学院高分子材料系,上海201800

出　　处：《宁波化工》2010年第1期37-42,共6页Ningbo Chemical Industry

摘　　要：采用红外光谱法定量测定了彩涂钢板氟碳涂料中PVDF的含量。用衰减全反射傅里叶变换红外光谱技术,得到了不同PVDF含量样品的红外光谱图,以朗伯-比尔定律为理论依据,分别选取PVDF和丙烯酸树脂的特征吸收峰为各自的定量参比峰,得出参比峰面积比与树脂质量比的线性回归方程。比较了不同的参比峰和吸光度的表征方法,得出分别以874cm-1和1730cm-1吸收峰作为PVDF和丙烯酸树脂的定量参比峰,以固定波数段积分法求取吸收峰面积时得出的线性回归方程结果最佳,其相关系数为0.999,测定方差为2.77×10-4,最大相对误差为1.37%。该方法迅速简捷、稳定可靠。The quantitative analysis of fluorine content measuring methods in fluorocarbon coatings of colorized painting steel by IR spectrum were discussed in detail. The technology of attenuated total reflectance （ATR） FTIR spectroscopy was used to get FTIR spectroscopy of different fluorine content samples. The characteristic absorption peaks of PVDF and acrylic resin were chosen as quantitative reference peaks respectively based on Lambert-Beer Law, then the linear regression equation between area ratio of reference peaks and mass ratio of resins was obtained. After comparing different characterization ways of reference peaks and absorbency, characteristic absorption peak of 874 cm^-1 and 1730 cm^-1 were selected as the reference peaks of PVDF and acrylic resin respectively, and the method fixing the wavenumber area was the best to obtain the linear regression equation. The correlation coefficient, variance and maximum relative error of obtained linear regression equation was 0.999, 2.77× 10^-4 and 1.37% respectively The method was simple, efficient, and credible

关 键 词：红外光谱法 彩涂钢板氟碳涂料 PVDF含量 

分 类 号：TQ630.72[化学工程—精细化工]