Study on Pyrolysis Characteristics of Bamboo Paper After Aging and Quantitative Evaluation of Its Aging Degree
CHEN Biao1,†, TAN Jing1,†, FU Xiaohang1, LU Yujing1, ZHU Yuewei1, HUANG Jing1, DI Yumeng1, DING Yanwei2,*
1 Department of History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei 230026, China 2 Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026,China
Abstract: There are new indicators of paper aging that need to be explored in cultural relics conservation. In this work, based on the accelerated heat aging of bamboo paper, its pyrolysis characteristics after aging were studied via the thermogravimetry, and the retention rate of tensile index (Ri) of bamboo paper was tested. The results show that with rising aging temperatures, the characteristic temperatures of TG curve of bamboo paper as well as DTG curve has gradually reduced in turn, which reflects that the thermal stability of bamboo paper decreased after aging. With the aging degree of bamboo paper aggravated, the temperature of its 50% weight loss (T0.5) has declined. Therefore, the T0.5 can be used as one of the indicators to reflect the aging characteristics of paper, the different value of T0.5 (ΔT0.5) between bamboo paper before and after aging can be used as the parameter to evaluate its aging degree. The ΔT0.5 and Ri of bamboo paper under different aging conditions were used for regression analysis, it is found that there is an exponential quantitative relationship between ΔT0.5 and Ri, which indicates the evaluation model for the aging degree of bamboo paper can be established. The ΔT0.5 and Ri of other bamboo paper samples tested were used to verify the accuracy of the quantitative model by two methods (Mean Absolute Percentage Error and Posterior-Variance-Test), which indicates the model has high-precision fitting level and can be used to evaluate the aging of bamboo paper with different raw materials and paper-making technologies, especially for studying some precious or small amounts of paper.
陈彪, 谭静, 付小航, 卢郁静, 朱玥玮, 黄晶, 狄雨萌, 丁延伟. 竹纸老化的热解特性及其老化程度的量化评价[J]. 材料导报, 2022, 36(13): 21040180-5.
CHEN Biao, TAN Jing, FU Xiaohang, LU Yujing, ZHU Yuewei, HUANG Jing, DI Yumeng, DING Yanwei. Study on Pyrolysis Characteristics of Bamboo Paper After Aging and Quantitative Evaluation of Its Aging Degree. Materials Reports, 2022, 36(13): 21040180-5.
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