冷冻对纸张耐久性影响的研究

Effect of Freezing on the Durability of Paper Collection

低温冷冻杀虫和低温冷冻干燥是备受推崇的纸质藏品保护技术,但是冷冻对纸张耐久性的影响研究尚不充分。为了避免对纸质藏品造成保护性伤害,本文考察了冷冻对不同含水量的酸性纸和中碱性纸耐久性的影响。研究发现,冷冻对纸张耐久性的影响与其含水量和纸张类型相关。冷冻对于干燥中碱性纸耐久性无影响,会降低潮湿和浸湿中碱性纸耐久性,对不同含水量酸性纸耐久性均存在劣化作用。因此,低温冷冻杀虫处理适用于干燥的中碱性纸质藏品,低温冷冻干燥需进一步改善工艺提高其安全性。

ControUed freezing process for disinfestation of insects and fungi, and vacuum freezing drying are highly regarded protection technology for paper collection. However, the research on the effect of freezing on the durability of paper collection was weak. To avoid protective injury to paper collection, the effect of freezing on the durability of acid and alkaline paper which have different moisture content were studied. It was suggested that the effect of freezing on the durability of paper was related to the moisture content and type of paper. Freezing had little effect on the durability of alkaline paper which was dry. But, the durability of alkaline paper which was soaked and wet was lowered by freezing. ~lhe durability of acid paper with different moisture content all degraded by freezing. Therefore, Controlled freezing is appropriate for protect dry alkaline paper collection. The security of vacuum freezing drying should be perfected by improved technology.