保存环境对纸张性能的影响研究

A study on influence of storage environment on paper properties

纸张的保存寿命是文献保存寿命的重要方面,本文研究了单宣、桑皮纸、苦竹纸、字典纸和打字纸在氮气、空气和密封三种保存环境下,在105℃下热老化72h后纸张的白度、撕裂度和冷抽p H值的变化,同时进行被动采样研究了老化过程中环境中的气体。实验结果表明:通氮气的防老化效果最好,通空气的防老化效果次之,密封的防老化效果最差。不同种纸张的三种老化效果存在差别,耐久性最差的打字纸的效果区分最明显,而耐久性最好的构皮纸的效果区分最不明显。

Preservation life of paper is an important aspect of documentation storage. In this paper, we studied five kinds of paper including single Xuan paper, mulberry paper, bitter bamboo paper, dictionary paper and typing paper. They were aged at 105℃ for 72h respectively in nitrogen, air and sealed preservation environment. The brightness, tearing resistance and cold aqueous extracts pH value were tested both before and after thermal ageing. The experimental results showed that the anti ageing property in nitrogen storage is the best, and in air worse, while storage in sealing was the worst. Furthermore, the difference among the three conditions depending onageing resistance of paper. The difference of typing paper, which has worst durability, was very obvious. On the contrary, the difference of mulberry paper, which has best durability, was not obvious.