蓝色圆珠笔油墨紫外光照射变化的研究

在紫外光照射下，通过对蓝色圆珠笔字迹色痕ＦＴ－ＩＲ显微光谱的研究。发现溶剂挥发迅速。其次是环氧树脂的聚合、交联；三苯甲烷染料的分解比较缓慢；而醇酸树脂相对稳定。该研究为字迹色痕的进一步分辨提供了新方法，同时为字迹色痕的“年龄”推断奠定了基础。选用相关峰的相对峰高比来描述这一变化，并进行曲线拟合，消除了因笔力不同而引起的油墨流出量不同造成的误差，这在实际工作中是很有意义的。

Research About the Variation of Blue Ballpoint Writting Inks Exposured to Ultraviolet Light by Time

The Fourier transform-infrared spectra of the blue ballpoint inks exposed to ultraviolet light were studied. This research discovered that the solvents volatilized rapidest, and then the rate of polymerization and cross-link process of the epoxy resin took second place, and the decomposition of triarylmethane dyes was slower, and alkyd resin was relatively steady. It was as a new means for further distingusihing writting inks. Meanwhile, the means could determine the age of inks. The relative ratio of peak height was applied to describe the process of the change and on the basis of the curve fitting the errors coming from different strokes could be aviod. The advantages above are very important in practical examinations.