The Treatment of Chinese Ancestor Portraits: An Introduction to Chinese Painting Conservation Techniques

Lee, Valerie; Gu, Xiangmei; Hou, Yuanli

doi:10.1179/019713603806112697

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Qi-Wa is generally included in the discussion of cockling and curling due to (1) quality of mounting paper [8] or consistency on paste for the multiple backings [9], (2) residual tension from the ridding of creases and the lining and drying procedures [10], (3) climate and conservation conditions such as humidity/moisture [11][12][13] and tem- perature. Although the scroll is considered replaceable in Chinese tradition, any defect in scrolls can still lead to damages on the artwork since they are structurely joined together.…”

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confidence: 99%

Curling Edges: A Problem that Has Plagued Scrolls for Millennia

et al. 2014

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Qi-Wa refers to the up curl on the lengths of hand scrolls and hanging scrolls, which has troubled Chinese artisans and emperors for as long as the art of painting and calligraphy has existed. This warp is unwelcome not only for aesthetic reasons, but its potential damage to the fiber and ink. Although it is generally treated as a part of the cockling and curling due to moisture, consistency of paste, and defects from the mounting procedures, we demonstrate that the spontaneous extrinsic curvature incurred from the storage is in fact more essential to understanding and curing Qi-Wa. In contrast to the former factors whose effects are less predictable, the plastic deformation and strain distribution on a membrane are a well-defined mechanical problem. We study this phenomenon by experiments, theoretical models, and molecular dynamics simulation, and obtain consistent scaling relations for the Qi-Wa height. This knowledge enables us to propose modifications on the traditional mounting techniques that are tested on real mounted paper to be effective at mitigating Qi-Wa. By experimenting on polymer-based films, we demonstrate the possible relevance of our study to the modern development of flexible electronic paper.

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confidence: 99%