竹纸老化的热解特性及其老化程度的量化评价

doi:10.11896/cldb.21040180

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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 (T_0.5) has declined. Therefore, the T_0.5 can be used as one of the indicators to reflect the aging characteristics of paper, the different value of T_0.5 (ΔT_0.5) between bamboo paper before and after aging can be used as the parameter to evaluate its aging degree. The ΔT_0.5 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 ΔT_0.5 and Ri, which indicates the evaluation model for the aging degree of bamboo paper can be established. The ΔT_0.5 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.

Key words： bamboo paper heat aging thermogravimetry pyrolysis characteristics aging evaluation

Published: 10 July 2022 Online: 2022-07-12

CLC number:

O642

Fund:National Natural Science Foundation of China (31200455).

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	Articles by authors
	CHEN Biao
	TAN Jing
	FU Xiaohang
	LU Yujing
	ZHU Yuewei
	HUANG Jing
	DI Yumeng
	DING Yanwei

Cite this article:

CHEN Biao,TAN Jing,FU Xiaohang, et al. Study on Pyrolysis Characteristics of Bamboo Paper After Aging and Quantitative Evaluation of Its Aging Degree[J]. Materials Reports, 2022, 36(13): 21040180-5.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21040180 OR http://www.mater-rep.com/EN/Y2022/V36/I13/21040180

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