Deacidifying method for paper cultural relics

Abstract

The invention discloses a de-acidifying method for paper cultural relics, which comprises the following steps of: 1) flatly spreading acidified paper cultural relics on a flat board; 2) injecting an ion source reagent including OH- and Ca<2+> into a bubbler, and importing a mixed gas of helium gas and nitrogen to serve as a carrier gas, and transmitting the ion source reagent to a plasma spray gun; 3) turning on a plasma excitation pulse power source, forming ion flames containing OH- and Ca<2+> at the muzzle of the plasma spray gun; and spraying the ion flames to scan the surface of the flattened paper cultural relics to perform deacidifying processing. In the method disclosed by the invention, a plasma discharging form is adopted under normal temperature and normal pressure work conditions, thereby complex and expensive vacuum equipment are avoided being used, and damages of an aqueous solution infusion method to a paper body are avoided; and the method disclosed by the invention can be used for realizing rapid large-area deacidifying processing and has the advantages of uniformity for de-acidification, stable process, and suitability for industrialized large-scale production.

Description

technical field [0001] The invention relates to a normal temperature and pressure plasma deacidification method suitable for paper cultural relics. Background technique [0002] Most of the huge amount of ancient books and documents left over from past dynasties in our country are written and printed on handmade paper or mechanical paper. They are the precious cultural heritage of the Chinese nation and have important historical and cultural value that cannot be copied. Paper plays an important role as a carrier for recording history and transmitting and continuing the essence of culture. However, since the 19th century, people have generally found that books and newspapers written and printed on mechanical paper are difficult to preserve for a long time. The reason is that the aluminum sulfate retained in the manufacturing process of mechanical paper becomes acidic after being hydrolyzed, which causes the paper to acidify and "self-destruct". In addition, the development o...

AI Technical Summary

Problems solved by technology

However, since the 19th century, people have generally found that books and newspapers written and printed on mechanical paper are difficult to preserve for a long time.

The reason is that the aluminum sulfate retained in the manufacturing process of mechanical paper becomes acidic after being hydrolyzed, which causes the paper to acidify and "self-destruct". In addition, the development of modern economy has caused increasing air pollution, which has also accelerated the acidification of paper.

[0003] In order to protect the integrity of cultural resources and rescue acidified paper documents, various deacidification methods have been studied, but none of them are ideal: the aqueous solution method is easy to cause paper wrinkles, adhesion, and discoloration, and it is difficult to quantify; the organic solvent method is flammable, Toxic and other safety hazards; gas phase method must have vacuum coordination, long processing cycle and expensive equipment

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