论文部分内容阅读
本文利用差示扫描量热(DSC)法测定了不同种类、不同形成时间的蓝黑墨水字迹,目的是验证该方法鉴定蓝黑墨水字迹形成时间的可行性。利用DSC仪分别测试了经过加热、紫外光照射、日光照射等人为老化处理的纯墨水样品及经自然老化不同形成时间蓝黑墨水字迹的DSC曲线。分析结果表明,一部样品无明显的特征峰,还有一部分样品的曲线特征峰位置变化无一定的规律,并且同一样品多次测试所得结果的重现性较差。所以利用该方法测定蓝黑墨水字迹的形成时间,所得结果的准确性尚需商榷。
The purpose of this paper is to verify the feasibility of using this method to identify the writing time of blue and black ink, based on the differential scanning calorimetry (DSC). The DSC curves of pure ink samples subjected to artificial aging, such as heating, ultraviolet light irradiation and sunlight irradiation, and the black and white ink of different forming time by natural aging were tested by DSC. The analysis results show that there is no obvious characteristic peak in one sample, and there is a certain rule that there is no certain change in the position of the characteristic peak of the curve in some samples, and the reproducibility of the results of multiple tests of the same sample is poor. Therefore, using this method to determine the formation time of blue and black ink, the accuracy of the results obtained remains to be discussed.