【摘要】 <正> 驰名中外的宣纸,具有许多优良的特性。前文已经报道了润墨性,本文拟就耐久性作一初步探讨。 目前,对纸的耐久性还没有统一的看法。有人认为,纸的耐久性是指经过长时间以后,纸张仍然能够保持其重要的使用性质,特别是它的耐折度和颜色变化极小。也有人把纸的耐久性定义为,维持其化学稳定性和长期保持其最初性能的能力。必须指出,耐久性更多还原

【Abstract】 Three kinds of Xuan paper, namely four-ehi (Chinese feet) super bark Xuan paper, four-chi fine bark Xuan paper and four-chi cotton stock Xuan paper, were studied for their permanencies through accelerated ageing." Comparisons were made with coating raw stock, coated paper, writing paper and newsprint under similar accelerated ageing conditions. The results reveal that Xuan papers, super bark Xuan and fine bark Xuan in particular, possess the best permanence of about 1050 years and newsprint the poorest, about 125-150 years.更多还原